fix(career): passport review polish — a11y semantics + seen-state guard

CodeRabbit follow-up on #936 (the one Major — overlay outside the click
root — was verified false: the host mounts every screen.html root inside
#plugin-career, ✕-close confirmed working live):

- Tabs: aria-selected/aria-controls + role=tabpanel/aria-labelledby.
- Book overlay: role=dialog + aria-modal + aria-label; focus moves to
  the close button on open and returns to the opener on close.
- seenBadges(): guard non-object JSON so a corrupt stored value cannot
  throw on every passport refresh (covered by a new corruption test).
- Fresh-session suppression test (badge seen → no re-notification).
- Stylelint declaration-empty-line-before nit in .pp-stamp.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

.github/pull_request_template.md

@@ -1,17 +0,0 @@
-## What
-
-<!-- What does this PR do, and why? Link the issue it addresses. -->
-
-## feedpak surface
-
-<!-- The feedpak spec is sacrosanct: the spec defines the format, this app implements it.
-     Delete this section ONLY if your change doesn't touch how the app reads or writes packs. -->
-
-- [ ] This PR does **not** change how the app reads/writes feedpaks (manifest keys, pack files, folder layout)
-- [ ] …or it does, and the spec change landed first via the [FEP process](https://github.com/got-feedback/feedpak-spec/blob/main/CONTRIBUTING.md) — FEP / spec PR: `got-feedback/feedpak-spec#___` (once it merges, re-run this PR's checks and the gate goes green)
-
-## Checklist
-
-- [ ] `CHANGELOG.md` `[Unreleased]` updated (user-visible changes)
-- [ ] Tests added/updated for new behaviour
-- [ ] Commits are DCO signed off (`git commit -s`)

.github/workflows/ci.yml

@@ -63,18 +63,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-        # npm ci runs third-party postinstall scripts; don't leave the token in
-        # git config for them (this job never pushes).
-        with:
-          persist-credentials: false
 
       - uses: actions/setup-node@v4
         with:
           node-version: '20'
 
-      - name: Install dependencies
-        run: npm ci
-
       - name: Rebuild Tailwind CSS
         run: bash scripts/build-tailwind.sh
 
@@ -131,94 +124,6 @@ jobs:
           print(f"Validated {len(manifests)} manifest(s) — OK")
           EOF
 
-  feedpak-spec:
-    # Guard that core stays faithful to the feedpak format spec, which lives in
-    # its own repo (got-feedback/feedpak-spec) and is the contract third-party
-    # packers and players build against. Four surface checks: core reads/writes
-    # only manifest keys the spec declares (and the scanned-module list can't
-    # fall behind); the exception allowlist never grows, so the FEP process is
-    # the only way a new key lands; core ingests the spec's example packs; packs
-    # committed here pass the spec's reference validator. Motivated by
-    # #933, where a manifest key (`original_audio`) shipped in core without ever
-    # reaching the spec.
-    #
-    # The gate checks against the spec repo's HEAD, deliberately: the app must
-    # conform to the LIVING spec, always. The dev flow is self-serve — a gated
-    # PR opens a FEP, the spec PR merges, re-running this job goes green; no
-    # pin file to bump, nothing to maintain. Accepted trade-off: a BREAKING
-    # spec change (rare, deliberate, MAJOR per the spec's compatibility policy)
-    # reddens every PR here until core conforms — which is the correct
-    # org-wide signal that the app is out of conformance. The normal FEP is
-    # additive and can never redden this job.
-    name: feedpak-spec
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        # This job runs repository code (tools/check_spec_conformance.py) and
-        # never pushes; don't leave the token in git config for it.
-        # fetch-depth: 0 so the base branch is available — the gate must prove
-        # the exception allowlist didn't grow in this PR.
-        with:
-          persist-credentials: false
-          fetch-depth: 0
-
-      - uses: actions/setup-python@v5
-        with:
-          python-version: '3.12'
-          cache: 'pip'
-
-      - name: Check out feedpak-spec at HEAD
-        uses: actions/checkout@v4
-        with:
-          repository: got-feedback/feedpak-spec
-          ref: main
-          path: .feedpak-spec
-          persist-credentials: false
-
-      - name: Record the spec commit this run verified against
-        # HEAD-tracking means CI results can differ across time on the same
-        # commit. Log the exact spec SHA so a red run is reproducible.
-        run: git -C .feedpak-spec rev-parse HEAD
-
-      - name: Install dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install -r requirements.txt
-          # CI-only: the spec's reference validator needs jsonschema. Not a
-          # runtime dependency — this gate never runs on the serve/Docker path
-          # (constitution Principle I). Pinned for the same reason the spec SHA
-          # is: an upstream release must not turn this job red on a PR that
-          # changed neither this repo nor the spec.
-          pip install 'jsonschema==4.26.0'
-
-      - name: Fetch the base branch's exception allowlist
-        id: baseline
-        run: |
-          # The allowlist is closed: it grandfathers keys that predate this gate
-          # and may only shrink. Prove that by diffing against the base branch —
-          # without this, anyone could append an entry and route around the FEP
-          # process from inside this repo.
-          #
-          # Resolve the base rather than hardcoding `main`: ship-ci.yml also runs
-          # this workflow for PRs into release/** and for pushes to release/**,
-          # where a main baseline would diff against the wrong branch.
-          #   PR   -> the branch it merges into
-          #   push -> the branch itself (its tip already contains the change, so
-          #           this is a no-op; enforcement happens at PR time)
-          BASE="${{ github.event.pull_request.base.ref || github.ref_name }}"
-          echo "diffing the allowlist against origin/$BASE"
-          git fetch --no-tags --depth=1 origin "$BASE"
-          if git cat-file -e FETCH_HEAD:feedpak-spec-exceptions.yml 2>/dev/null; then
-            git show FETCH_HEAD:feedpak-spec-exceptions.yml > "$RUNNER_TEMP/baseline-exceptions.yml"
-            echo "args=--baseline-exceptions $RUNNER_TEMP/baseline-exceptions.yml" >> "$GITHUB_OUTPUT"
-          else
-            # Only true until the PR that introduces this gate lands.
-            echo "args=--bootstrap-allowlist" >> "$GITHUB_OUTPUT"
-          fi
-
-      - name: Check feedpak spec conformance
-        run: python tools/check_spec_conformance.py --spec .feedpak-spec ${{ steps.baseline.outputs.args }}
-
   lint:
     # Maintainer/CI-only size + module-hygiene gate (constitution Principle I:
     # dev tooling, never on the serve/Docker path — same category as

.github/workflows/content-packs.yml

@@ -1,90 +0,0 @@
-name: Content packs
-
-# Build & publish opt-in career venue packs as per-pack, versioned, immutable
-# releases (convention: tag `venue-<id>-v<N>`, asset `<id>-pack-v<N>.zip`),
-# then open a PR bumping venues.json url/sha256/bytes. This is automation so
-# publishing packs is never a person's manual job (SLIM-NIGHTLY item 1b).
-#
-# Immutable tags → publishing is a deliberate, versioned act, so this runs on
-# manual dispatch (not push): a media change means a new version, a human call.
-on:
-  workflow_dispatch:
-    inputs:
-      venues:
-        description: "Space-separated venue ids to (re)publish, e.g. 'club arena'"
-        required: true
-        default: "club"
-      version:
-        description: "Pack version N (tag venue-<id>-vN). Bump for new media."
-        required: true
-        default: "1"
-
-concurrency:
-  group: content-packs
-  cancel-in-progress: false
-
-permissions:
-  contents: write
-  pull-requests: write
-
-jobs:
-  publish:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-        # Media lives in-tree today; add `lfs: true` once SLIM-NIGHTLY item 4
-        # moves venue-packs/** to Git LFS.
-
-      - uses: actions/setup-python@v5
-        with:
-          python-version: '3.12'
-
-      - name: Build & publish packs
-        env:
-          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-          # Never interpolate dispatch inputs straight into the shell — a crafted
-          # value would execute on the runner with this job's write token. Pass
-          # via env, validate the formats, and use a Bash argument array.
-          VENUES: ${{ github.event.inputs.venues }}
-          VERSION: ${{ github.event.inputs.version }}
-        run: |
-          set -euo pipefail
-          [[ "$VERSION" =~ ^[1-9][0-9]*$ ]] || { echo "::error::version must be a positive integer"; exit 1; }
-          [[ "$VENUES" =~ ^[a-z0-9][a-z0-9-]*(\ [a-z0-9][a-z0-9-]*)*$ ]] || { echo "::error::venues must be space-separated venue ids"; exit 1; }
-          read -r -a venues <<< "$VENUES"
-          dirs=()
-          for v in "${venues[@]}"; do
-            dirs+=("plugins/career/venue-packs/$v")
-          done
-          python tools/content_packs.py "${dirs[@]}" \
-            --version "$VERSION" \
-            --publish \
-            --manifest /tmp/packs-manifest.json
-          cat /tmp/packs-manifest.json
-
-      - name: Apply url/sha256/bytes to venues.json
-        run: |
-          python - <<'PY'
-          import json, pathlib
-          manifest = json.load(open("/tmp/packs-manifest.json"))
-          vpath = pathlib.Path("plugins/career/venues.json")
-          data = json.loads(vpath.read_text())
-          for v in data["venues"]:
-              m = manifest.get(v["id"])
-              if m and v.get("pack"):
-                  v["pack"].update(url=m["url"], sha256=m["sha256"], bytes=m["bytes"])
-          vpath.write_text(json.dumps(data, indent=4) + "\n")
-          PY
-
-      - name: Open manifest-bump PR
-        uses: peter-evans/create-pull-request@v6
-        with:
-          commit-message: "career: refresh venue pack manifest (v${{ github.event.inputs.version }})"
-          title: "career: refresh venue pack manifest (v${{ github.event.inputs.version }})"
-          body: |
-            Automated by the content-packs workflow after publishing
-            `${{ github.event.inputs.venues }}` v${{ github.event.inputs.version }}
-            to their `venue-<id>-v${{ github.event.inputs.version }}` releases.
-            Bumps `venues.json` pack url/sha256/bytes to match the uploaded zips.
-          branch: content-packs/manifest-bump
-          delete-branch: true

CLAUDE.md

@@ -400,14 +400,6 @@ highway.setNoteStateProvider((note, chartTime) => {
 - The built-in 2D highway consults it in `drawNote` / `drawSustains` / the chord-frame path: 'hit'/'active' → bright string colour + additive halo + a contained "sizzle" (crackling sparks, throbbing core, a shockwave ring on a fresh strike) on the gem and a bright (vs dim) sustain trail; 'miss' → faint red wash. The bundled **3D highway** reads the same data via `bundle.getNoteState` (bright string-tinted outline + bright body + glowing sustain + a contained sparkle hugging the note rect on hit/active; red outline + suppressed body on miss). Custom renderers that want it call `bundle.getNoteState(note, chartTime)` — it null-guards and returns the normalized `{ state, alpha, color }` (or null).
 - This is orthogonal to the overlay contract: note_detect remains an overlay (HUD, diagnostic miss markers, the "currently detected" indicator) *and* a scorer that feeds this provider. A renderer that ignores `getNoteState` simply doesn't light gems — nothing breaks.
 
-#### 4. Chart-transform provider — remap the chart before rendering AND scoring (feedBack#952)
-
-The core-owned `chart-transform` provider coordinator applies synchronous chart substitutions after difficulty filtering. Register and select providers through the capability domain; it owns persistence, refresh, splitscreen propagation, failure attribution, and diagnostics.
-
-Provider inputs and staged outputs are isolated copies. Async returns or provider errors fail back to the original chart and expose only a fixed public failure reason. `getSongInfo()` remains the original chart contract; transform-aware consumers use the renderer bundle or `getStringCount()`, `getTuning()`, `getCapo()`, and `getCentOffset()`.
-
-See [docs/capability-recipes.md](docs/capability-recipes.md#chart-transform-provider) for the manifest and registration example.
-
 ### Audio mixer fader registration (feedBack#87)
 
 Plugins that produce audio outside the song's `<audio>` element (NAM amp output, synth voices, etc.) can register a labeled fader so users can balance them against the song from one mixer popover in the player controls.
@@ -596,21 +588,6 @@ tab, key/scale annotations, etc.). Published as **feedpak**; this codebase still
 **sloppak** name internally — same on-disk format. [docs/sloppak-spec.md](docs/sloppak-spec.md) is
 a local pointer + code map.
 
-**The spec is sacrosanct — read it BEFORE changing how this app reads or writes packs.** The
-spec repo defines the format; this app merely implements it ("a change is not part of the format
-until it lands here" — feedpak-spec/GOVERNANCE.md). Any new manifest key, file, or directory the
-app touches must land in the spec **first**, via the
-[FEP process](https://github.com/got-feedback/feedpak-spec/blob/main/CONTRIBUTING.md) (proposal
-issue → one spec PR updating spec + schemas + example + changelog → then re-run your PR's checks
-here; the gate verifies against the spec's HEAD, so it goes green the moment your key is real).
-CI enforces this: the `feedpak-spec` job
-([docs/feedpak-spec-gate.md](docs/feedpak-spec-gate.md)) fails any PR whose code touches a
-manifest key the spec doesn't declare, and there is **no in-repo bypass** — the exceptions
-file is a closed grandfather list that only shrinks. If the format seems to be missing something
-you need, that's a FEP conversation, not a workaround. (Cautionary tale: `original_audio`, #933 —
-shipped without a spec entry, and third-party packers reverse-engineered a folder convention out
-of a code comment.)
-
 **Key code:**
 - `lib/sloppak.py` — format detection, zip/directory resolution, metadata extraction, song loading
 - `lib/sloppak_convert.py` — sloppak assembly pipeline, Demucs stem splitting
@@ -690,7 +667,7 @@ The highway WebSocket at `/ws/highway/{filename}?arrangement={index}` streams th
 | `anchors` | `{ type, data: [{ time, fret, width }] }` | Fret zoom anchors |
 | `chord_templates` | `{ type, data: [{ name, frets: [6] }] }` | Named chord shapes |
 | `lyrics` | `{ type, data: [{ w, t, d }], source }` | Syllables: `w`=word, `t`=time, `d`=duration. `-` joins to previous, `+` = line break. `source` is one of `"xml"`, `"whisperx"`, `"user"` — UI can use it to render an "auto-transcribed" badge for `whisperx`. Sloppaks always include `source` (legacy sloppaks without a `lyrics_source` manifest key default to `"xml"` at load time). Loose folders set it based on which extractor matched. Absent only when no lyrics fired the message at all |
-| `tone_changes` | `{ type: 'tone_changes', base, base_rig?, data: [{ t, name, rig? }] }` | Optional — tone change events relative to the arrangement base tone; only sent if tones were found. Note the time key is **`t`**, not `time` (both the sloppak path and the legacy XML path emit `t`). `base_rig` and each entry's `rig` are the pack's **rig bindings** — ids into [`rigs.json`](https://github.com/got-feedback/feedpak-spec/blob/main/spec/feedpak-v1.md#79-rigsjson) (feedpak §6.9/§7.9), carried through verbatim and **not** resolved by core: selecting a realization and applying the `intent.gm` floor belong to whatever voices the part. Both are **omitted entirely** when the chart binds no rig, so consumers predating the rig model see the payload they always did. |
+| `tone_changes` | `{ type: 'tone_changes', base, data: [{ time, name }] }` | Optional — tone change events relative to the arrangement base tone; only sent if tones were found |
 | `notes` | `{ type, data: [{ t, s, f, sus, ho, po, sl, bn, ... }] }` | Single notes |
 | `chords` | `{ type, data: [{ t, notes: [{ s, f, sus, ... }] }] }` | Chord events |
 | `phrases` | `{ type, data: [{ start_time, end_time, max_difficulty, levels: [{ difficulty, notes, chords, anchors, handshapes }] }], total }` | Optional — per-phrase difficulty ladder for master-difficulty slider (feedBack#48). Only sent when the source chart carries multi-level phrase data (phrase-aware sloppak). Sent in chunks (`data` is a batch, `total` is the full count across messages) to avoid multi-MB single frames. Absent for GP imports and legacy sloppak; consumers must treat missing message as "single fixed difficulty — slider disabled". |

docs/capability-domains.md

@@ -153,14 +153,6 @@ The legacy chart-coupled surface — `highway.setNoteStateProvider(fn)`, the sin
 
 Diagnostics live under `feedBack.note_detection_capability.v1` and contain provider ids/labels/kinds, binding summaries (requester, provider, redacted context, target size), availability, and the last bounded outcome (event, binding, provider, MIDI number, hit flag) — never raw audio buffers, sample data, device labels, or song identity.
 
-## Chart-Transform Domain
-
-The chart-transform slice (#952) is a core-owned provider coordinator implemented by [static/capabilities/chart-transform.js](../static/capabilities/chart-transform.js). Its commands register, select, clear, and refresh providers; `chart.transform` is the provider operation. Selection persists by provider id and applies to the primary highway and announced splitscreen instances.
-
-The synchronous `highway.setChartTransform` data-plane hook runs at chart ready, mastery changes, and refresh—not per frame. Transforms receive isolated chart data after difficulty filtering and may replace notes, chords, anchors, hand shapes, chord templates, string count, tuning, capo, and cent offset. Outputs are isolated and timeline arrays are time-sorted before the built-in renderer, renderer bundle, or public getters read them. Async returns and other provider failures clear the stage and retain the original chart.
-
-`getSongInfo()` retains original metadata; effective values are exposed by the renderer bundle and dedicated highway getters. Diagnostics under `feedBack.chart_transform.diagnostics.v1` contain provider selection/install state and a fixed public failure reason, never chart data, song identity, or raw exceptions. The domain has no compatibility shim because no earlier chart-substitution surface exists.
-
 ## MIDI-Input Domain
 
 The MIDI-input slice (spec 012, issues #873/#880) promotes `midi-input` as a **core-owned** provider-coordinator implemented by [static/capabilities/midi-input.js](../static/capabilities/midi-input.js) — the MIDI analog of `audio-input`. It is deliberately separate from `audio-input` (whose source/`open` contract is audio-frame-centric: channel shapes, sample buffers) because MIDI carries discrete messages, not audio; and it is **not** owned by any feature plugin, so the device-access boundary outlives the input-setup wizard (exactly as `audio-input` is `core.audio.session`-owned). Consumers — the `input_setup` onboarding wizard, the `piano`/keys and `drums` plugins, and (as a follow-up, #881) note-detection's Web-MIDI provider — converge here on ONE device-access boundary: one permission prompt, one source list, one redaction boundary, retiring private per-plugin `navigator.requestMIDIAccess()` calls.
@@ -200,7 +192,7 @@ Core domains include review metadata in diagnostics:
 - `active`: wired to current FeedBack behavior and expected to work as an integration point.
 - `diagnostic`: support/inspection-only runtime surfaces.
 
-PR1 includes only the delivered domains listed in [capability-roadmap.md](capability-roadmap.md): `pipeline`, `diagnostics`, and `library`. The follow-up audio graph/session slice promotes `audio-mix`, `audio-input`, `audio-monitoring`, and a coordinated `stems` surface. The playback slice promotes `playback` as an active transport control plane. The audio-effects slice promotes provider-selected effect-chain planning while leaving physical processor loading to compatible executors such as trusted Desktop native audio or a browser/WASM executor. The visualization slice promotes `visualization` as the highway renderer provider-coordinator, the note-detection slice (spec 009) promotes `note-detection` as the detection-binding control plane, and the chart-transform slice (#952) promotes `chart-transform` as the pre-render/pre-scoring chart substitution coordinator. Backend routes, app UI, settings, and other hardware-facing domains remain documented in the roadmap and safety matrix until their own host workflow/provider slice exists.
+PR1 includes only the delivered domains listed in [capability-roadmap.md](capability-roadmap.md): `pipeline`, `diagnostics`, and `library`. The follow-up audio graph/session slice promotes `audio-mix`, `audio-input`, `audio-monitoring`, and a coordinated `stems` surface. The playback slice promotes `playback` as an active transport control plane. The audio-effects slice promotes provider-selected effect-chain planning while leaving physical processor loading to compatible executors such as trusted Desktop native audio or a browser/WASM executor. The visualization slice promotes `visualization` as the highway renderer provider-coordinator, and the note-detection slice (spec 009) promotes `note-detection` as the detection-binding control plane. Backend routes, app UI, settings, and other hardware-facing domains remain documented in the roadmap and safety matrix until their own host workflow/provider slice exists.
 
 Capability metadata is versioned by the `capability-pipelines.v1` standard. Invalid roles, commands, operations, requests, observes, emits, events, owner kinds, compatibility modes, ownership policies, safety classes, or version fields are excluded from the capability graph and surfaced through `capability_validation_warnings`; legacy plugin fields continue to load through their existing app paths. Plugins that declare a future `capability-pipelines` version are reported through `capability_unsupported_versions` and their runtime handlers are marked incompatible.
 
@@ -256,7 +248,7 @@ UI placement and settings contributions are real FeedBack surfaces, but they are
 
 The library provider workflow is the PR1 core adapter and is implemented natively as the `library` capability module. Provider refresh, selection, and sync run through `library` owner commands; backend provider registration remains the way providers enter the library registry, and the browser module turns that registry into provider participants. The app event bus continues to dispatch local `window.feedBack` events for legacy listeners; playback now mirrors song transport, route, seek, and loop lifecycle into `playback`, and visualization attributes renderer selection/failure, while navigation, note, and route-only surfaces remain outside capability domains until their own slices land.
 
-The direct `window.highway` object remains the renderer data plane. Per-frame reads such as notes, chords, beats, and renderer hooks should not be moved behind asynchronous capability commands until there is a dedicated chart/render facade. The `chart-transform` domain follows this doctrine: its substitution runs through the synchronous `highway.setChartTransform` hook (staged once per chart change), while the capability surface owns only registration, selection, and diagnostics.
+The direct `window.highway` object remains the renderer data plane. Per-frame reads such as notes, chords, beats, and renderer hooks should not be moved behind asynchronous capability commands until there is a dedicated chart/render facade.
 
 ## First-Party Management Plugins
 
@@ -303,9 +295,8 @@ From the `feedBack/` directory:
 ```bash
 node --check static/app.js
 node --check static/capabilities.js
-node --check static/capabilities/chart-transform.js
 node --check static/diagnostics.js
 node --check plugins/capability_inspector/screen.js
 node --test tests/js/*.test.js
 pytest tests/test_plugin_runtime_idempotence.py tests/test_plugins.py tests/test_diagnostics_bundle.py -q
-```
+```

docs/capability-recipes.md

@@ -499,57 +499,6 @@ window.feedBack.on('progression:quest-completed', (e) => {
 });
 ```
 
-## Chart-Transform Provider
-
-Plugins that transpose, simplify, annotate, or otherwise rewrite chart data register as `chart-transform` providers (#952). The effective chart reaches the built-in highway, custom renderers, and highway getters on primary and splitscreen instances.
-
-```json
-{
-  "id": "my_transform",
-  "name": "My Transform",
-  "standards": ["capability-pipelines.v1"],
-  "capabilities": {
-    "chart-transform": {
-      "roles": ["provider"],
-      "operations": ["chart.transform"],
-      "mode": "active",
-      "compatibility": "none",
-      "ownership": "multi-provider",
-      "safety": "safe",
-      "version": 1
-    }
-  }
-}
-```
-
-```js
-const api = window.feedBack.capabilities;
-
-await api.dispatch({
-  capability: 'chart-transform',
-  command: 'register-provider',
-  source: 'my_transform',
-  payload: {
-    providerId: 'my_transform',
-    label: 'My Transform',
-    transform(input) {
-      const notes = rewriteNotes(input.notes);
-      const allNotes = input.allNotes === input.notes ? notes : rewriteNotes(input.allNotes);
-      return { notes, allNotes };
-    },
-  },
-});
-
-await api.dispatch({ capability: 'chart-transform', command: 'select-provider',
-  source: 'my_transform', payload: { providerId: 'my_transform' } });
-
-await api.dispatch({ capability: 'chart-transform', command: 'refresh', source: 'my_transform' });
-```
-
-`transform(input)` receives filtered `notes`, `chords`, `anchors`, and `handShapes`, plus full-difficulty `allNotes`/`allChords`, `chordTemplates`, `stringCount`, and `songInfo`. It may synchronously return any subset of those arrays plus `tuning`, `capo`, or `centOffset`; null leaves the chart unchanged. The host isolates provider inputs and outputs, time-sorts accepted timelines, and falls back to the original chart on failure.
-
-Transforms run at chart ready, mastery recompute, and explicit `refresh`, never per frame. Selection persists by provider id. `getSongInfo()` retains original metadata; effective metadata is available through the renderer bundle and `getStringCount()`, `getTuning()`, `getCapo()`, and `getCentOffset()`.
-
 ## Future Expansion Domains
 
 Some domain names are reserved for expected future contracts, but they are not registered in the runtime graph yet. For example, `ui.player-panels` is documented as a likely panel-host surface, but FeedBack does not currently expose a capability command for panel contributions. See [capability-roadmap.md](capability-roadmap.md) for the PR1 domain set and deferred-domain checklist.

docs/capability-roadmap.md

@@ -60,10 +60,6 @@ The progression slice (spec 010) promotes `progression` as an active exclusive-o
 
 Deferred follow-up slices: a `contributor` role so plugins ship their own challenge/quest content (drums challenges from a drums-scoring plugin, quest-pool entries from minigame plugins), and drums scoring wiring so `song_completed {instrument: "drums"}` goals become satisfiable.
 
-## Chart-Transform Control Plane Slice
-
-The chart-transform slice (#952) is an active provider-coordinator domain. It owns provider lifecycle, persisted selection, refresh, failure attribution, and redaction-safe diagnostics. Its synchronous highway hook applies isolated provider output after difficulty filtering to built-in, custom-renderer, and getter consumers across primary and splitscreen highways. No compatibility shim is needed; per-panel independent selection remains a follow-up.
-
 ## Recommended Next Slices
 
 The plugin inventory suggests this migration order after the audio graph/session and playback slices:

docs/capability-safety-matrix.md

@@ -20,7 +20,7 @@ Core domains also have a review scope. **Active contract** domains are wired to
 | visualization | provider-coordinator | safe | inspect, list-providers, select-renderer, clear-renderer | renderer.create, renderer.destroy | Highway renderer provider registry, picker-delegated selection, auto-match attribution, and failure fallback. `renderer.create` maps to the legacy `window.feedBackViz_*` factory `init(canvas, ctx)` call; `renderer.destroy` maps to the factory `destroy()` teardown. Legacy `type: "visualization"` manifests and `window.feedBackViz_*` globals are accounted compatibility shims. Diagnostics carry provider ids/labels, selection source, last auto-match outcome, and last failure — no song filenames, titles, or arrangement names. |
 
 | note-detection | provider-coordinator | sensitive | inspect, register-provider, unregister-provider, open-binding, close-binding, set-target, clear-target | pitch.estimate, verify.target | Detection-binding control plane (spec 009): providers (midi/engine/js) serve primitives; each requester binds its own redacted tuning context; consumers own judgment, hit/miss flow as observability events. Legacy `highway.setNoteStateProvider` is an accounted shim. Diagnostics carry provider/binding summaries and bounded outcomes — no raw audio, sample data, device labels, or song identity. |
-| chart-transform | provider-coordinator | safe | inspect, list-providers, register-provider, unregister-provider, select-provider, clear-provider, refresh | chart.transform | Synchronous chart substitution after difficulty filtering (#952). Provider data is isolated, timelines are sorted, and failures retain the original chart with a fixed public reason. Diagnostics contain provider and selection state, never chart data, song identity, or raw exceptions. |
+
 | midi-input | provider-coordinator | sensitive | inspect, list-sources, discover, select-source, open-source, close-source | source.enumerate, source.describe, source.open, source.close | Core-owned MIDI device control plane (spec 012), the MIDI analog of `audio-input`. Inspect/list/select are prompt-free; `discover` is the Web-MIDI permission boundary (`requestMIDIAccess()` gates the whole input list) and records denied/unavailable outcomes; `open-source` attaches a shared listener session and never re-prompts. Selection persists by redaction-safe `logicalSourceKey`. Diagnostics redact device labels and never include raw MIDI messages or live handles. |
 
 Privileged commands are roadmap-only until they have: a visible user confirmation path, diagnostics redaction rules, failure recovery, and tests that prove disabled or incompatible participants cannot execute handlers.

docs/feedpak-spec-gate.md

@@ -1,132 +0,0 @@
-# The feedpak spec-conformance gate
-
-`tools/check_spec_conformance.py`, run in CI as the `feedpak-spec` job.
-
-## Why
-
-feedpak is published as an **open format**: its own repo
-([got-feedback/feedpak-spec](https://github.com/got-feedback/feedpak-spec)), a normative spec, JSON
-Schemas, and a reference validator. That is a promise to everyone outside this codebase — third-party
-packers, converters, and players build against the spec, and the spec is meant to be the complete and
-authoritative description of a pack.
-
-The moment core reads a manifest key the spec doesn't define, that promise breaks silently:
-
-- A spec-compliant pack is no longer guaranteed to be a fully-working pack.
-- The reference validator can't warn authors about a key it has never heard of — it will happily green-light
-  the key, and every misspelling of it.
-- The format's real definition drifts into our source tree. In the case that motivated this gate
-  ([#933](https://github.com/got-feedback/feedback/issues/933)), third-party tooling started emitting an
-  `original/` directory that no code anywhere requires — the convention was reverse-engineered from an
-  example in a *code comment*.
-
-The rule this gate enforces: **any manifest key core reads _or writes_ must be in the spec before core
-ships code that depends on it.** Spec first, implementation second. Writes are not exempt — a key core
-writes lands in every pack we emit, so an undeclared one seeds the ecosystem with non-spec data.
-
-Note that "get it into the spec" is not automatically the right fix for an existing violation — for
-`original_audio` it isn't. The spec already carries the pre-separation mixdown as a stem
-(`{id: full, file: stems/full.ogg}`), so that key added a *second, redundant* location for audio to a format
-that already had one, and the resolution is to remove it rather than bless it. The gate takes no position on
-which way a violation resolves; it only insists that one of the two happens deliberately, in the open,
-before the code merges.
-
-## What it checks
-
-We can't mechanically prove core *interprets* a key the way the spec means. We can prove four surface
-properties, and they cover the drift that actually occurs.
-
-| Layer | Check | Catches |
-|---|---|---|
-| 1. key-coverage | Every manifest key core reads **or writes** is declared in the spec's `manifest.schema.json`. | Core growing a key the spec never defined — the #933 class. |
-| 2. allowlist-closed | `feedpak-spec-exceptions.yml` has not **grown** relative to the base branch. | Someone routing around the FEP process by allowlisting their own new key. |
-| 3. forward | Core's `load_song()` ingests every example pack the spec ships. | The spec adding or tightening something core ignores or breaks on. |
-| 4. reverse | Every pack committed to this repo passes the spec's `tools/validate.py`. | Core (or a contributor) committing a pack the spec would reject. |
-
-Layer 1 works by walking the AST of the modules listed in `READERS` and collecting every literal key touched
-on a manifest dict (`manifest.get("x")`, `manifest["x"]`, and the wrapped
-`(load_manifest(p) or {}).get("x")` form used in `lib/enrichment.py`).
-
-**Reads and writes are both checked, and reported differently.** A key core *writes*
-(`manifest["x"] = v`, as `lib/songmeta.py` does) is spec surface pointed outward: it puts a key into every
-pack we emit, so an undeclared one seeds the ecosystem with non-spec data. Subscripts are classified by AST
-context — `Store` is a write, `Load` is a read — so `manifest["year"] = ...` is not miscounted as a read.
-
-## When it fails
-
-You added a manifest key the spec doesn't define. **There is exactly one way forward, and it is not in this
-repo.**
-
-Land the key in the spec through the **feedpak Enhancement Proposal (FEP)** process
-([feedpak-spec/CONTRIBUTING.md](https://github.com/got-feedback/feedpak-spec/blob/main/CONTRIBUTING.md)):
-
-1. **Open a FEP issue** on `got-feedback/feedpak-spec` — the problem, the proposed on-disk shape (manifest
-   key and/or side-file), backward compatibility, and the version bump it implies.
-2. **Discuss**, until it has a clear shape and rough consensus.
-3. **Land one PR there** that updates the normative spec (`spec/feedpak-v1.md`), the relevant JSON
-   Schema(s), an example in `examples/` that exercises it, and the changelog — *together*. A PR touching
-   only one of those is incomplete.
-4. **Back here**, just re-run your PR's checks. The gate verifies against the spec's HEAD, so the moment
-   your key is genuinely part of the format, your PR goes green — nothing to bump, nothing to maintain.
-
-That's deliberately the only route — no experimental prefix, no self-serve allowlist — and it's usually a
-quick one for additive keys. The reason it's worth the round-trip: the gate checks the whole repo against
-the living spec, so if non-conformance ever lands, it shows up as red CI on *every* teammate's open PR, and
-only the person who introduced it can clear it. Going through the FEP keeps your change clean and keeps
-everyone else unblocked.
-
-The spec's own governance says the same thing:
-
-> This repository defines the format only. Applications that read or write feedpak ... track this spec as a
-> dependency; they do not drive it. **A change is not part of the format until it lands here.**
-> — [feedpak-spec/GOVERNANCE.md](https://github.com/got-feedback/feedpak-spec/blob/main/GOVERNANCE.md)
-
-### `feedpak-spec-exceptions.yml` is a closed grandfather list, not a hatch
-
-It exists solely because `original_audio` predates the gate. **CI fails any PR that adds an entry** (layer 2
-diffs it against the base branch), so the list can only ever shrink. Entries are debt, each carries a
-tracking issue, and each disappears when the underlying key is removed from core. The gate also fails on a
-*stale* entry — the spec caught up, or core stopped touching the key — so the file cannot quietly become
-somewhere drift accumulates.
-
-Deleting an entry does not, by itself, get you past the gate: layer 1 still fails while core reads the key.
-The entry goes when the **code** goes.
-
-## Tracking the spec's HEAD
-
-The gate checks out `feedpak-spec` at **HEAD**, on purpose: the app must conform to the *living* spec, and
-nobody should have to maintain a pin. The dev flow is fully self-serve — gated PR → FEP → spec merge →
-re-run checks → green.
-
-Two properties to know about:
-
-- **The normal FEP is additive** (a new optional key), which only ever makes the gate *looser* — it cannot
-  redden anyone's PR. Only a **breaking** spec change (removing/renaming a key the app uses, tightening the
-  validator against committed packs) turns PRs red repo-wide — and per the spec's compatibility policy that
-  is a rare, deliberate MAJOR event, exactly when an org-wide "the app is out of conformance" signal is the
-  right outcome. The CI job logs the exact spec SHA each run verified against, so a red run is reproducible.
-- **CI results can change over time on the same commit** — that is inherent to tracking a living contract,
-  and it is the point: green means "conformant *now*", not "conformant when written".
-
-## Limitations
-
-Known, and worth fixing in follow-ups rather than blocking on:
-
-- **Layer 1's receiver detection is heuristic.** Locals *assigned from* `load_manifest(...)` are discovered
-  flow-aware whatever they're called (chart.py's `m` taught us that), and the inline
-  `(load_manifest(p) or {}).get(...)` form is recognised — but a manifest that arrives as a **function
-  parameter** is only recognised by name (`MANIFEST_VARS`: `manifest`, `mf`). A parameter called something
-  else would slip. The hardening step is to route all manifest access through a single declared
-  `KNOWN_MANIFEST_KEYS` registry in `lib/sloppak.py`; the gate then compares registry against schema exactly
-  instead of inferring.
-- **Layer 1 covers top-level keys only.** Nested structure (`arrangements[].file`, `.id`, `.notation`) isn't
-  checked. Extending to it means walking the schema's `$ref` subschemas.
-- **Layer 1 recognises `get`, `setdefault`, subscripts, and the known gap-fill helper** as key access.
-  `update()` and `pop()` aren't used against a feedpak manifest anywhere in the tree, so they're deliberately
-  not special-cased rather than speculatively handled. `readers-complete` reuses the same scanner
-  (`keys_touched()`), so this blind spot is shared, not doubled: a module using only unrecognised access forms
-  would evade both.
-- **Layer 4 can't catch unknown keys**, because `manifest.schema.json` sets `additionalProperties: true` and
-  the reference validator deliberately "treats unknown keys/files as forward-compatible". Fixing this
-  properly belongs in the spec (tighten the schema, or give the validator a `--strict` mode). Until then,
-  layer 1 is the only thing standing between us and the next `original_audio`.

docs/plugin-v3-ui.md

@@ -189,23 +189,3 @@ out of the capability graph.
 - [ ] `#player` overlays keep `z-index` ≤ the chrome layers (transport/HUD 20,
       rail 30, popovers 40).
 - [ ] Verify at `/` — it and `/v3` serve the same (and only) v3 shell.
-
-## Injecting into core shells (profile, dashboard)
-
-Core screens that accept plugin sections render **mount points** — usually
-empty, sometimes holding core's own **fallback content** (the Dashboard's
-career slot ships the plugin-count stat) — and announce each (re)build with a
-DOM event, because their `innerHTML` swap wipes anything previously injected.
-A plugin listens for the event and **replaces the mount's content** (never
-append — a fallback may be present) by id — the same seam every time:
-
-| Shell | Event | Mounts |
-| --- | --- | --- |
-| Profile | `v3:profile-rendered` | `#v3-profile-passports-mount` (career wall), `#v3-profile-feats-slot`, `#v3-profile-achievements-mount` |
-| Dashboard | `v3:dashboard-rendered` | `#v3-dash-career-slot` (career card; core's plugin-count stat is the fallback content a plugin may replace) |
-| Settings | `v3:settings-rendered` | per-plugin `settings.html` panels |
-
-Rules: inject on every event (the mount is fresh), keep the section
-**absent-not-empty** (no state → leave the mount alone / empty), and guard
-re-wired listeners with a `dataset` flag when your own refresh path can run
-against an unwiped mount.

docs/size-exemptions.md

@@ -61,8 +61,6 @@ extractions and twenty-two `routers/` modules, plus lib/library_registry.py for
 and is a monolith in its own right, to be split per-table once the router train
 lands) · `static/v3/songs.js` (4,134) · `static/capabilities/audio-session.js`
 (2,974) · `plugins/highway_3d/screen.js` (15,656) · `plugins/keys_highway_3d/screen.js`
-(3,780) · `plugins/drum_highway_3d/screen.js` (3,597) · `plugins/career/screen.js`
-(1,530 — career v3 gigs + gold pushed it over; split plan: carve the gig block into a
-`scriptType: module` file when career work next touches it) — and every monolith with a PR
+(3,780) · `plugins/drum_highway_3d/screen.js` (3,597) — and every monolith with a PR
 train in the refactor plan. Test files (e.g. `tests/test_plugins.py`) are out of scope
 by policy — the norm governs source files.

feedpak-spec-exceptions.yml

@@ -1,56 +0,0 @@
-# CLOSED grandfather list — manifest keys core reads or writes that predate the
-# spec-conformance gate and that the feedpak spec does not define.
-#
-# Please don't add entries here — CI will flag any PR that grows this list, so
-# it can only shrink over time. That's by design, not distrust: the moment the
-# app touches a key the spec doesn't define, every teammate's PR starts failing
-# the conformance gate too, and whoever added the key is the only person who
-# can fix it. The FEP process below avoids putting anyone in that spot. The
-# feedpak spec's own governance is explicit:
-#
-#   "This repository defines the format only. Applications that read or write
-#    feedpak ... track this spec as a dependency; they do not drive it.
-#    A change is not part of the format until it lands here."
-#     — got-feedback/feedpak-spec, GOVERNANCE.md
-#
-# So a new manifest key goes through the feedpak Enhancement Proposal (FEP)
-# process — see feedpak-spec/CONTRIBUTING.md:
-#
-#   1. Open a FEP issue on got-feedback/feedpak-spec describing the problem, the
-#      on-disk shape, backward compatibility, and the version bump implied.
-#   2. Land one PR there updating the normative spec, the JSON Schemas, an
-#      example that exercises it, and the changelog — together.
-#   3. Back here, re-run this PR's checks. The gate verifies against the spec's
-#      HEAD, so once your key is in the spec, the gate goes green.
-#
-# That's the supported route — and usually a quick one for additive keys. If
-# your PR is blocked by this gate, a FEP will get you unblocked properly; an
-# entry here won't (CI rejects it).
-#
-# Entries below exist ONLY because they predate the gate. Each is debt with a
-# tracking issue, and each disappears when its issue is fixed. The gate also
-# fails if an entry goes stale — the spec caught up, or core no longer reads or
-# writes the key — so this file cannot quietly become a place drift hides.
-
-exceptions:
-  - key: original_audio
-    issue: https://github.com/got-feedback/feedback/issues/945
-    reason: >-
-      Added by #583 (the full mix played while every stem fader sits at unity,
-      since demucs recombination is lossy). It never went through a FEP and the
-      spec does not define it — the drift this gate exists to prevent.
-
-      #933 fixed the drift: feedpak 1.15.0 RESERVES the stem id `full` for the
-      complete mixdown (feedpak-spec#53), and core now reads the full mix from
-      that stem. Nothing depends on this key any more — not the loader, not
-      lib/enrichment.py, not the stems plugin, and the packer no longer writes it.
-
-      What remains is a READ-ONLY deprecated fallback in lib/sloppak.py
-      (_legacy_full_mix), kept for one release because every pack produced before
-      the spec caught up carries `original_audio: original/full.ogg` and would
-      otherwise silently lose its pristine mix. tools/migrate_full_mix_stem.py
-      rewrites those packs into the spec shape.
-
-      This entry disappears with that fallback — tracked by #945, which cannot be
-      forgotten: the gate fails if the entry goes stale, and deleting the read is
-      what makes it stale.

lib/dlc_paths.py

@@ -14,7 +14,6 @@ import os
 from pathlib import Path
 
 import appstate
-from safepath import resolved_root
 
 
 def _get_dlc_dir(cfg: dict | None = None) -> Path | None:
@@ -87,14 +86,7 @@ def _resolve_dlc_path(dlc: Path, filename: str) -> Path | None:
             or PureWindowsPath(safe).drive):
         return None
     try:
-        # The library root is fixed for the life of the process, but this
-        # function runs once per song / art fetch / scanned row — and
-        # `.resolve()` lstats every path component. Re-resolving here was
-        # ~23,500 stat calls/sec on a 50,944-song library, which pins a core
-        # when the library sits on a FUSE mount (NTFS-3G, SMB, sshfs) where each
-        # stat is a userspace round trip. Resolve the root once; see
-        # safepath.resolved_root for the caching contract.
-        root = resolved_root(dlc)
+        root = dlc.resolve()
         # normpath collapses `.`/`..`/duplicate separators purely lexically —
         # it never touches the filesystem, so an in-library junction component
         # is preserved (allowed) while `..`/absolute segments still escape and

lib/enrichment.py

@@ -368,12 +368,10 @@ def _acoustid_gate() -> "JSONResponse | None":
 
 def _song_audio_file(filename: str) -> "str | None":
     """Resolve a LIBRARY song (by filename/id) to a local master-audio file for
-    fingerprinting: a sloppak's complete mixdown, or a loose folder's audio. None
-    when the song can't be found or carries no mixdown (a pack that kept only its
-    separated stems — an acoustic fingerprint of one re-summed from them would not
-    match the recording, so we decline rather than submit a lossy reconstruction).
-    Mirrors serve_sloppak_file's containment guards so a crafted filename can't
-    read outside DLC_DIR / the pack."""
+    fingerprinting: the full-mix `original_audio` extracted from a sloppak, or a
+    loose folder's audio. None when the song can't be found or ships no full-mix
+    audio (some packs carry only stems). Mirrors serve_sloppak_file's containment
+    guards so a crafted filename can't read outside DLC_DIR / the pack."""
     dlc = _get_dlc_dir()
     if not dlc:
         return None
@@ -385,20 +383,7 @@ def _song_audio_file(filename: str) -> "str | None":
             canon = resolved.relative_to(dlc.resolve()).as_posix()
         except ValueError:
             return None
-        manifest = sloppak_mod.load_manifest(resolved) or {}
-        # The mixdown is the RESERVED `full` stem (spec §5.3). Unlike playback,
-        # fingerprinting wants it even when it is the pack's ONLY stem — a
-        # single-mix pack is exactly the master audio we want to fingerprint —
-        # so this asks find_full_mix() rather than partition_stems().
-        stems = manifest.get("stems") or []
-        full = sloppak_mod.find_full_mix(
-            [s for s in stems if isinstance(s, dict)]
-        )
-        rel = full.get("file") if full else None
-        # DEPRECATED fallback: packs written before the spec reserved `full` put
-        # the mixdown behind a top-level `original_audio:` key instead (#933).
-        if not isinstance(rel, str) or not rel.strip():
-            rel = manifest.get("original_audio")
+        rel = (sloppak_mod.load_manifest(resolved) or {}).get("original_audio")
         if not isinstance(rel, str) or not rel.strip():
             return None
         src = sloppak_mod.get_cached_source_dir(canon)

lib/gp2rs.py

@@ -2080,7 +2080,7 @@ def convert_file(
         safe_name = track.name.strip().replace(" ", "_").replace("/", "_")
         filename = f"{safe_name}_{arr_name or 'arr'}.xml"
         filepath = out / filename
-        filepath.write_text(xml_str, encoding="utf-8")
+        filepath.write_text(xml_str)
         output_files.append(str(filepath))
 
     return output_files

lib/gp2rs_gpx.py

@@ -1680,7 +1680,7 @@ def convert_file(
             filepath = safe_join(out, filename)
             if filepath is None:
                 raise ValueError(f"unsafe output filename from track name: {track['name']!r}")
-            filepath.write_text(xml_str, encoding="utf-8")
+            filepath.write_text(xml_str)
             output_files.append(str(filepath))
             continue
 
@@ -2108,7 +2108,7 @@ def convert_file(
         filepath = safe_join(out, filename)
         if filepath is None:
             raise ValueError(f"unsafe output filename from track name: {track['name']!r}")
-        filepath.write_text(xml_str, encoding="utf-8")
+        filepath.write_text(xml_str)
         output_files.append(str(filepath))
 
         # Keys/piano tracks additionally get a standard-notation sidecar

lib/gp8_audio_sync.py

@@ -72,59 +72,15 @@ def _parse_gpif(data: bytes):
         return ET.fromstring(data)
 
 
-def _asset_path_from_registry(root, asset_id: str) -> str | None:
-    """The ZIP path an ``<Asset id=...>`` declares, or None.
-
-    GPIF shape::
-
-        <Assets>
-          <Asset id="0">
-            <EmbeddedFilePath>Content/Assets/&lt;hash&gt;.mp3</EmbeddedFilePath>
-
-    Separators are normalised (a writer may emit backslashes) and the
-    result is returned as-is for the caller to verify against the
-    archive — this function never decides that a path exists.
-    """
-    if root is None or not asset_id:
-        return None
-    try:
-        for asset in root.iter('Asset'):
-            if (asset.get('id') or '').strip() != asset_id:
-                continue
-            node = asset.find('EmbeddedFilePath')
-            path = (node.text or '').strip() if node is not None else ''
-            if not path:
-                return None
-            return path.replace('\\', '/').lstrip('./')
-    except Exception:
-        # A malformed registry is not fatal — the caller has two more
-        # resolution steps behind this one.
-        return None
-    return None
-
-
 def _resolve_audio_asset(zf, root=None) -> tuple[str, str | None]:
     """Resolve the embedded backing-track audio asset inside a .gp ZIP.
 
-    ``BackingTrack/AssetId`` is a key into the GPIF's ``<Assets>``
-    registry — ``<Asset id="0"><EmbeddedFilePath>`` names the exact path
-    inside the ZIP — NOT a filename stem. Resolution order:
-
-    1. the registry entry for the declared id (authoritative);
-    2. a filename-stem match (files whose stem IS the id);
-    3. the archive's first audio asset.
-
-    Step 2 was previously the only lookup, which mattered because GP8
-    names embedded files by hash while ids are small integers, so the
-    stem match essentially never hit: every such file logged a warning
-    and fell through to step 3. That was silently correct only because a
-    file almost always carries exactly ONE audio asset — with two, a
-    backing track declaring id 1 resolved to asset 0, i.e. the wrong
-    recording.
-
-    Returns ``(asset_stem, audio_zip_path)``, or ``('', None)`` when the
-    archive has no audio asset. Shared by ``extract_sync`` and
-    ``extract_audio`` so the matching logic can't drift between them.
+    Matches ``BackingTrack/AssetId`` against the audio files under
+    ``Content/Assets/`` (OGG, MP3, M4A, …) and falls back to the first
+    audio asset when the declared id is missing or unmatched. Returns
+    ``(asset_stem, audio_zip_path)``, or ``('', None)`` when the archive
+    has no audio asset. Shared by ``extract_sync`` and ``extract_audio``
+    so the matching logic can't drift between them.
     """
     audio_files = [
         n for n in zf.namelist()
@@ -159,32 +115,6 @@ def _resolve_audio_asset(zf, root=None) -> tuple[str, str | None]:
             declared = (aid.text or '').strip() if aid is not None else ''
 
     if declared:
-        # 1. The <Assets> registry is authoritative: it maps the id to the
-        #    embedded path directly. Membership in the archive is verified
-        #    rather than trusted — the path comes out of the file, and a
-        #    stale/edited entry must fall through, not resolve to nothing.
-        registry_path = _asset_path_from_registry(root, declared)
-        if registry_path:
-            # Matched on STEM, not the whole path, so a format variant of the
-            # same recording can win (see _prefer_ogg) — but constrained to the
-            # directory the registry actually named. Without that constraint an
-            # unrelated file that merely shares the stem could stand in for the
-            # declared asset, which is the failure the registry lookup exists
-            # to prevent.
-            declared_path = Path(registry_path)
-            same_stem = [
-                n for n in audio_files
-                if Path(n).stem == declared_path.stem
-                and Path(n).parent == declared_path.parent
-            ]
-            if same_stem:
-                return declared_path.stem, _prefer_ogg(same_stem)
-            _log.warning(
-                'gp8_audio_sync: AssetId %r maps to %r, which is not an audio '
-                'asset in the archive; falling back',
-                declared, registry_path,
-            )
-        # 2. Legacy shape: files whose stem IS the declared id.
         matched = [n for n in audio_files if Path(n).stem == declared]
         if matched:
             return declared, _prefer_ogg(matched)

lib/library_registry.py

@@ -17,12 +17,7 @@ import threading
 from typing import ClassVar
 
 import appstate
-from metadata_db import (
-    MetadataDB, _effective_tuning_cols_sql, _perspective_is_inferred_sql,
-    _tuning_group_key_sql,
-)
-import tunings as tunings_mod
-from tunings import DEFAULT_PERSPECTIVE, PERSPECTIVES
+from metadata_db import MetadataDB, _tuning_group_key_sql
 from routers import art as art_router
 
 import logging
@@ -44,6 +39,9 @@ def _safe_art_redirect_url(url: str) -> str | None:
         return None
 
 
+_TUNING_GROUP_KEY_SQL = _tuning_group_key_sql("songs")
+
+
 class LocalLibraryProvider:
     id = "local"
     label = "My Library"
@@ -71,43 +69,28 @@ class LocalLibraryProvider:
     def query_stats(self, **kwargs) -> dict:
         return self._db.query_stats(**kwargs)
 
-    def tuning_names(self, instrument: str = DEFAULT_PERSPECTIVE) -> dict:
+    def tuning_names(self) -> dict:
         # Group custom tunings on their raw offsets so distinct ones stay
         # distinct (tuning_name collapses them all to "Custom Tuning"); named
         # tunings keep grouping by name (stable across the rescan boundary, no
         # offsets/name split). `key` is the value the client sends back as the
         # filter selector — equal to the name for named tunings, the offsets
         # string for customs; offsets also feed the client's custom-pill label.
-        #
-        # `instrument=bass` swaps every column for its effective bass-facing
-        # expression (bass arrangement's tuning, guitar fallback) — the SAME
-        # expressions _build_intrinsic_where filters on, so a facet entry
-        # always selects exactly the songs it counted.
-        name_sql, offsets_sql, sort_sql = _effective_tuning_cols_sql("songs", instrument)
-        gkey_sql = _tuning_group_key_sql("songs", instrument)
-        # How many of a row's songs are showing an INFERRED tuning — i.e. have
-        # no bass chart of their own and are falling back to the guitar-derived
-        # one. Reported per entry so the UI can be honest about it instead of
-        # presenting a borrowed tuning as a measured one. Always 0 for guitar.
-        inferred_sql = f"SUM({_perspective_is_inferred_sql('songs', instrument)})"
         with self._db._lock:
             rows = self._db.conn.execute(
-                f"SELECT {name_sql}, {gkey_sql} AS gkey, "
-                f"MIN({sort_sql}), COUNT(*), MIN({offsets_sql}), {inferred_sql} "
-                f"FROM songs WHERE title != '' AND COALESCE({name_sql}, '') != '' "
+                f"SELECT tuning_name, {_TUNING_GROUP_KEY_SQL} AS gkey, "
+                "MIN(tuning_sort_key), COUNT(*), MIN(tuning_offsets) "
+                "FROM songs WHERE title != '' AND COALESCE(tuning_name, '') != '' "
                 "GROUP BY gkey COLLATE NOCASE "
-                f"ORDER BY ABS(COALESCE(MIN({sort_sql}), 0)), "
-                f"COALESCE(MIN({sort_sql}), 0) ASC, "
-                f"{name_sql} COLLATE NOCASE"
+                "ORDER BY ABS(COALESCE(MIN(tuning_sort_key), 0)), "
+                "COALESCE(MIN(tuning_sort_key), 0) ASC, "
+                "tuning_name COLLATE NOCASE"
             ).fetchall()
         return {
-            "instrument": instrument,
             "tunings": [
                 {"name": name, "key": gkey, "offsets": offs or "",
-                 "sort_key": int(sk or 0), "count": count,
-                 # Portion of `count` borrowed from the guitar chart.
-                 "inferred_count": int(inferred or 0)}
-                for name, gkey, sk, count, offs, inferred in rows
+                 "sort_key": int(sk or 0), "count": count}
+                for name, gkey, sk, count, offs in rows
             ],
         }
 
@@ -347,16 +330,9 @@ class SmartCollectionProvider:
         # have been hand-edited; never let a bad value reach a query.
         self._rules = _sanitize_collection_rules(collection.get("rules") or {})
 
-    def _filter_kwargs(self, instrument: str = "", playable_from_pitch=None) -> dict:
-        # `instrument` is the CALLER's play perspective (rides every request),
-        # never part of the saved rules — a collection saved by a guitarist
-        # must still read in bass tunings for a bass player, and vice versa.
-        args = _library_filter_args(**{k: v for k, v in self._rules.items()
+    def _filter_kwargs(self) -> dict:
+        return _library_filter_args(**{k: v for k, v in self._rules.items()
                                        if k in _LIBRARY_FILTER_PARAM_KEYS})
-        args["instrument"] = _normalize_instrument(instrument)
-        # The caller's CURRENT tuning is likewise per-request, never a saved rule.
-        args["playable_from_pitch"] = playable_from_pitch
-        return args
 
     def _sort(self, fallback: str) -> str:
         # A collection may pin its own sort (e.g. "recently added"); query_page
@@ -364,31 +340,28 @@ class SmartCollectionProvider:
         return self._rules.get("sort") or fallback
 
     def query_page(self, *, page=0, size=24, sort="artist", direction="asc",
-                   naming_mode="legacy", instrument="", playable_from_pitch=None, **_ignore):
+                   naming_mode="legacy", **_ignore):
         return self._local._db.query_page(
             page=page, size=size, sort=self._sort(sort), direction=direction,
-            naming_mode=naming_mode, **self._filter_kwargs(instrument, playable_from_pitch))
+            naming_mode=naming_mode, **self._filter_kwargs())
 
-    def query_artists(self, *, letter="", page=0, size=50, naming_mode="legacy",
-                      instrument="", playable_from_pitch=None, **_ignore):
+    def query_artists(self, *, letter="", page=0, size=50, naming_mode="legacy", **_ignore):
         return self._local._db.query_artists(
             letter=letter, page=page, size=size, naming_mode=naming_mode,
-            **self._filter_kwargs(instrument, playable_from_pitch))
+            **self._filter_kwargs())
 
-    def query_albums(self, *, page=0, size=120, naming_mode="legacy",
-                     instrument="", playable_from_pitch=None, **_ignore):
+    def query_albums(self, *, page=0, size=120, naming_mode="legacy", **_ignore):
         return self._local._db.query_albums(
-            page=page, size=size, naming_mode=naming_mode,
-            **self._filter_kwargs(instrument, playable_from_pitch))
+            page=page, size=size, naming_mode=naming_mode, **self._filter_kwargs())
 
     def query_stats(self, *, sort="artist", want_sort_letters=False,
-                    naming_mode="legacy", instrument="", playable_from_pitch=None, **_ignore):
+                    naming_mode="legacy", **_ignore):
         return self._local._db.query_stats(
             sort=self._sort(sort), want_sort_letters=want_sort_letters,
-            naming_mode=naming_mode, **self._filter_kwargs(instrument, playable_from_pitch))
+            naming_mode=naming_mode, **self._filter_kwargs())
 
-    def tuning_names(self, instrument: str = "guitar"):
-        return self._local.tuning_names(instrument=_normalize_instrument(instrument))
+    def tuning_names(self):
+        return self._local.tuning_names()
 
     async def get_art(self, song_id: str):
         return await self._local.get_art(song_id)
@@ -417,10 +390,7 @@ def _library_filter_args(q: str = "", favorites: int = 0, format: str = "",
                          artist: str = "", album: str = "",
                          arrangements_has: str = "", arrangements_lacks: str = "",
                          stems_has: str = "", stems_lacks: str = "",
-                         has_lyrics: str = "", tunings: str = "",
-                         instrument: str = "", tuning_match: str = "",
-                         playable_offsets: str = "", playable_instrument: str = "",
-                         playable_string_count: str = "") -> dict:
+                         has_lyrics: str = "", tunings: str = "") -> dict:
     fmt = format if format in ("archive", "sloppak", "loose") else ""
     return {
         "q": q,
@@ -434,58 +404,9 @@ def _library_filter_args(q: str = "", favorites: int = 0, format: str = "",
         "stems_lacks": _split_csv(stems_lacks),
         "has_lyrics": _parse_has_lyrics(has_lyrics),
         "tunings": _split_csv(tunings),
-        # Which perspective the tuning facet/filter/sort speaks for (the
-        # caller's play role, NOT a saved rule — see _sanitize_collection_rules).
-        "instrument": _normalize_instrument(instrument),
-        # "Playable without retuning" mode: the caller's CURRENT tuning,
-        # resolved to the one number the comparison needs. None = exact-match
-        # mode (the default), so the tuning pills behave exactly as before.
-        "playable_from_pitch": (
-            _playable_from_pitch(playable_offsets, playable_instrument,
-                                 playable_string_count)
-            if tuning_match == "playable" else None),
     }
 
 
-def _playable_from_pitch(offsets_csv: str, instrument: str, string_count: str):
-    """Lowest open-string MIDI pitch of the CALLER's current tuning.
-
-    The client sends its live working tuning (offsets + instrument + string
-    count) rather than a precomputed pitch, so the pitch tables stay in one
-    place (lib/tunings.py) instead of being duplicated in JS.
-
-    Returns None for anything unusable — the caller then applies NO playable
-    filter at all. That is the neutral state, not a claim: a malformed tuning
-    must not silently assert that everything is playable OR that nothing is.
-    """
-    try:
-        offsets = [int(x) for x in _split_csv(offsets_csv)]
-    except (TypeError, ValueError):
-        return None
-    if not offsets:
-        return None
-    inst = "bass" if instrument == "bass" else "guitar"
-    try:
-        sc = int(string_count)
-    except (TypeError, ValueError):
-        sc = len(offsets)
-    key = tunings_mod.instrument_key(inst, sc)
-    if key not in tunings_mod.STANDARD_OPEN_MIDIS or len(offsets) != sc:
-        return None
-    midis = tunings_mod.tuning_midis_from_offsets(key, offsets)
-    return min(midis) if midis else None
-
-
-def _normalize_instrument(raw: str) -> str:
-    """Resolve a tuning PERSPECTIVE id (guitar-lead | guitar-rhythm | bass).
-
-    Tolerates the legacy two-valued vocabulary ("guitar" -> guitar-lead) and
-    falls back to the default for anything unknown — an unrecognised value
-    must never silently change filter semantics."""
-    return raw if raw in PERSPECTIVES else (
-        DEFAULT_PERSPECTIVE if raw != "bass" else "bass")
-
-
 def _sync_collection_provider(collection: dict) -> None:
     """Register (or replace) the provider for one collection."""
     appstate.library_providers.register(

lib/loosefolder.py

@@ -225,18 +225,13 @@ def _detect_arrangements(path: Path) -> tuple[list[dict], dict]:
     Returns (arrangements_list, shared_meta).
     shared_meta contains title/artist/album/year/duration/tuning_offsets
     sourced from the highest-priority arrangement (lead > combo > rhythm >
-    bass) — picking the guitar tuning when both bass and lead are present —
-    plus `bass_tuning_offsets` from the first bass arrangement (None when the
-    folder has none), so the index can carry both tunings.
+    bass) — picking the guitar tuning when both bass and lead are present.
     """
     arrangements = []
     # Track which arrangement priority sourced shared_meta so a later,
     # higher-priority arrangement (lead < bass in sort order) overrides.
     shared_meta = {}
     shared_priority = None
-    # First tuning seen per arrangement ROLE, kept alongside the guitar-first
-    # song tuning so the library can answer for the part a player plays.
-    role_tunings: dict[str, list[int] | None] = {"bass": None, "rhythm": None}
 
     for xml in sorted(_iter_local_xmls(path)):
         # Trust the XML root over the filename — a custom named
@@ -274,10 +269,6 @@ def _detect_arrangements(path: Path) -> tuple[list[dict], dict]:
                             "duration", "tuning_offsets")}
             shared_priority = priority
 
-        if (arr_type in role_tunings and role_tunings[arr_type] is None
-                and meta.get("tuning_offsets")):
-            role_tunings[arr_type] = list(meta["tuning_offsets"])
-
         arrangements.append({
             "type":     arr_type,
             "name":     arr_name,
@@ -290,8 +281,6 @@ def _detect_arrangements(path: Path) -> tuple[list[dict], dict]:
         a["index"] = i
         del a["priority"]
 
-    for role, offs in role_tunings.items():
-        shared_meta[f"{role}_tuning_offsets"] = offs
     return arrangements, shared_meta
 
 
@@ -423,14 +412,6 @@ def extract_meta(path: Path, dlc_root: Path | None = None) -> dict:
                                 xml_meta.get("duration", 0))
     tuning_offsets = _coerce_tuning_offsets(manifest.get("tuning_offsets"),
                                             xml_meta.get("tuning_offsets"))
-    # Per-role tunings: XML-derived only. A manifest `tuning_offsets` overrides
-    # the SONG tuning (above) but says nothing about WHICH chart it describes,
-    # so it must never be mistaken for a specific part's tuning.
-    role_tunings = {}
-    for role in ("bass", "rhythm"):
-        offs = xml_meta.get(f"{role}_tuning_offsets")
-        role_tunings[f"{role}_tuning_offsets"] = (
-            offs if isinstance(offs, list) and offs else None)
 
     manifest_arr = _validate_manifest_arrangements(manifest.get("arrangements"))
     if manifest_arr is not None:
@@ -446,7 +427,6 @@ def extract_meta(path: Path, dlc_root: Path | None = None) -> dict:
         "year":           year,
         "duration":       duration,
         "tuning_offsets": tuning_offsets,
-        **role_tunings,   # None = no arrangement in that role
         "arrangements":   arrangements,
         "audio_path":     str(audio) if audio else None,
         "art_path":       str(art)   if art   else None,

lib/lyrics_transcribe.py

@@ -23,18 +23,9 @@ Engine selection
 Two transcription paths share a common output:
 
 * `transcribe_vocals_remote(path, server_url, ...)` — POST the vocal
-  stem to the `/transcribe` endpoint on a feedBack-demucs-server
-  (got-feedBack's reference server already hosts WhisperX alongside
-  Demucs at the same URL).
-
-  It used to POST to `/align`, which is *forced alignment* — "here are
-  the lyrics, tell me when each word is sung". Its `text` field is
-  required and we have no lyrics (transcribing them is the point), so
-  the server answered 422 from FastAPI's validation layer before its
-  handler ran, and remote transcription never worked for anyone
-  (feedBack-plugin-stem-splitter#17). `/transcribe` takes only audio.
-  Requires feedBack-demucs-server ≥ the revision adding that endpoint;
-  an older server answers 404 and the error says so.
+  stem to the `/align` endpoint on a feedBack-demucs-server (got-feedBack's
+  reference server already hosts WhisperX alongside Demucs at the same
+  URL).
 
 * `transcribe_vocals_local(path, ...)` — load WhisperX in-process. Heavy
   (~3 GB of model weights for `large-v2` + the wav2vec2 aligner) and
@@ -425,38 +416,6 @@ def transcribe_vocals_local(
 
 # ── Remote transcription ────────────────────────────────────────────────────
 
-_MAX_ERR_BODY = 4000
-
-
-def _err_body(resp) -> str:
-    """The server's error body, whole if it plausibly is one, and marked when it isn't.
-
-    This was capped at 300 chars, which is enough for "Internal Server Error" and not much else.
-    The bodies carrying the most diagnosis are the long ones — a FastAPI validation body naming
-    the field it rejected, a 500 whose traceback answers on its LAST line — and those are exactly
-    the ones a 300-char cap decapitates. The cap survives so a server answering with a 2 MB HTML
-    error page can't dump a novel into a log line.
-    """
-    # Strip FIRST, then measure: a body that is 300 chars of JSON and 3900 of trailing whitespace
-    # is not a long body, and truncating it would cut real content to make room for blanks.
-    text = (getattr(resp, "text", "") or "").strip()
-    if len(text) <= _MAX_ERR_BODY:
-        return text
-
-    # Keep the HEAD **and the TAIL**. Head-only truncation throws away the exception line — and
-    # on a traceback the exception line is the answer. This docstring said as much while the code
-    # did the opposite: it cut off precisely the part it exists to preserve, which is the same
-    # mistake, one level up, as the 300-char cap it replaced.
-    #
-    # The marker sits inside the bound, not past it: otherwise _MAX_ERR_BODY is a suggestion, and
-    # the callers who trust it (a log line, a job record persisted to disk) are the ones surprised.
-    marker = f"\n… [truncated, {len(text)} chars total] …\n"
-    budget = max(0, _MAX_ERR_BODY - len(marker))
-    head = budget * 2 // 3          # context: what was being attempted
-    tail = budget - head            # verdict: what actually went wrong
-    return text[:head].rstrip() + marker + text[len(text) - tail:].lstrip()
-
-
 def transcribe_vocals_remote(
     vocals_path: Path,
     server_url: str,
@@ -467,17 +426,7 @@ def transcribe_vocals_remote(
     min_word_score: float = 0.35,
     progress_cb: ProgressCB = None,
 ) -> list[dict]:
-    """POST the vocal stem to `{server_url}/transcribe` and parse the response.
-
-    NOT `/align` — that endpoint is forced alignment ("here are the lyrics,
-    tell me when each word is sung") and its `text` field is required. We
-    have no lyrics; producing them is the point. Posting there returned a
-    422 from FastAPI's validation layer before the server's handler ran, so
-    remote transcription never worked at all
-    (feedBack-plugin-stem-splitter#17).
-
-    Requires a feedBack-demucs-server carrying `/transcribe`; an older one
-    answers 404 and the raised error says so.
+    """POST the vocal stem to `{server_url}/align` and parse the response.
 
     Expects the server to respond with a JSON object carrying a `words` (or
     `segments`) field in WhisperX's native shape; `_whisperx_to_sloppak`
@@ -505,53 +454,21 @@ def transcribe_vocals_remote(
     if api_key:
         headers["Authorization"] = f"Bearer {api_key}"
 
-    # POST to /transcribe, not /align.
-    #
-    # /align is FORCED ALIGNMENT: "here are the lyrics, tell me when each word is sung". Its
-    # `text` field is required, and we have no lyrics — transcription is the whole point. So the
-    # server rejected every request with a 422 in FastAPI's validation layer, before its handler
-    # ever ran, and remote transcription has never worked for anyone. /transcribe answers the
-    # question we are actually asking and takes only the audio.
-    # (feedBack-plugin-stem-splitter#17; endpoint added in feedBack-demucs-server#14.)
-    #
-    # `language` goes in the FORM BODY, not the query string: the server reads it with
-    # Form(""), and a query param would be silently ignored — so an explicit language hint would
-    # do nothing and Whisper's auto-detection would quietly decide instead, which is exactly the
-    # kind of "it works but it's wrong" that hides for months.
-    form: dict[str, str] = {}
+    params: dict[str, str] = {}
     if language:
-        form["language"] = language
+        params["language"] = language
 
-    # Everything that can go wrong out here comes back as RuntimeError, which is what the
-    # docstring promises and what the caller catches. A DNS failure, a timeout, a reset
-    # connection or an unreadable stem file would otherwise surface as requests.RequestException
-    # or OSError and escape the one handler written to log-and-continue — turning "this song's
-    # lyrics failed" into "the whole batch died".
-    try:
-        with open(vocals_path, "rb") as f:
-            resp = requests.post(
-                f"{server_url}/transcribe",
-                files={"file": (vocals_path.name, f, "audio/ogg")},
-                data=form or None,
-                headers=headers or None,
-                timeout=timeout,
-            )
-    except requests.RequestException as e:
-        raise RuntimeError(f"could not reach the WhisperX server at {server_url}: {e}") from e
-    except OSError as e:
-        raise RuntimeError(f"could not read the vocal stem {vocals_path.name}: {e}") from e
-
-    if resp.status_code == 404:
-        # The endpoint isn't there. Say what that means, because "404" on its own sends someone
-        # hunting for a typo in their URL when the real answer is that their server predates the
-        # feature. (feedBack-demucs-server#14 added /transcribe.)
-        raise RuntimeError(
-            f"the WhisperX server at {server_url} has no /transcribe endpoint (404) — it "
-            f"predates remote transcription support. Update the server, or use 'Check for "
-            f"update' if it is the plugin-managed one."
+    with open(vocals_path, "rb") as f:
+        resp = requests.post(
+            f"{server_url}/align",
+            files={"file": (vocals_path.name, f, "audio/ogg")},
+            params=params,
+            headers=headers or None,
+            timeout=timeout,
         )
+
     if resp.status_code != 200:
-        raise RuntimeError(f"WhisperX server error ({resp.status_code}): {_err_body(resp)}")
+        raise RuntimeError(f"WhisperX server error ({resp.status_code}): {resp.text[:300]}")
 
     data = resp.json()
 

lib/metadata_db.py

@@ -25,8 +25,6 @@ import time
 from pathlib import Path
 
 from song import compute_smart_names
-from tunings import DEFAULT_PERSPECTIVE, ROLE_PERSPECTIVES
-from tunings import perspective as _perspective
 
 log = logging.getLogger("feedBack.server")
 
@@ -36,113 +34,17 @@ log = logging.getLogger("feedBack.server")
 # raw offsets so distinct customs stay distinct, while named tunings keep
 # grouping by name (stable across the offsets-column migration). Used by both
 # the tuning-names listing and the filter WHERE so the contract matches.
-#
-# A non-default PERSPECTIVE (guitar-rhythm / bass) swaps every tuning column
-# for its EFFECTIVE expression: that role's indexed tuning when the song has
-# such an arrangement, falling back to the guitar-derived song tuning
-# otherwise — so a song with no rhythm/bass chart (or a row that predates the
-# columns, NULL there) still groups/filters/sorts instead of disappearing.
-# guitar-lead reads the original unprefixed columns, so it is byte-identical
-# to the historical behaviour.
-def _effective_tuning_cols_sql(alias: str, perspective: str = DEFAULT_PERSPECTIVE) -> tuple[str, str, str]:
-    """(name_sql, offsets_sql, sort_key_sql) for the given perspective."""
-    persp = _perspective(perspective)
-    if not persp.column_prefix:
-        return (f"{alias}.tuning_name", f"{alias}.tuning_offsets", f"{alias}.tuning_sort_key")
-    has_own = f"COALESCE({alias}.{persp.column('name')}, '') != ''"
-    return (
-        f"COALESCE(NULLIF({alias}.{persp.column('name')}, ''), {alias}.tuning_name)",
-        f"CASE WHEN {has_own} THEN {alias}.{persp.column('offsets')} ELSE {alias}.tuning_offsets END",
-        f"CASE WHEN {has_own} THEN {alias}.{persp.column('sort_key')} ELSE {alias}.tuning_sort_key END",
-    )
-
-
-def _effective_low_pitch_sql(alias: str, perspective: str = DEFAULT_PERSPECTIVE) -> str:
-    """Lowest open-string MIDI pitch under this perspective, with the same
-    fallback as the tuning columns — the "playable without retuning"
-    comparison reads it (see tunings.chart_is_playable_in)."""
-    persp = _perspective(perspective)
-    if not persp.column_prefix:
-        return f"{alias}.tuning_low_pitch"
-    has_own = f"COALESCE({alias}.{persp.column('name')}, '') != ''"
-    return (f"CASE WHEN {has_own} THEN {alias}.{persp.column('low_pitch')} "
-            f"ELSE {alias}.tuning_low_pitch END")
-
-
-def _perspective_is_inferred_sql(alias: str, perspective: str) -> str:
-    """1 when this row is BORROWING the guitar-derived song tuning because it
-    has no chart in the perspective's role. Always 0 for guitar-lead, which is
-    never a fallback."""
-    persp = _perspective(perspective)
-    if not persp.column_prefix:
-        return "0"
-    return f"(CASE WHEN COALESCE({alias}.{persp.column('name')}, '') = '' THEN 1 ELSE 0 END)"
-
-
-# ── The custom-tuning group key ──────────────────────────────────────────────
-#
-# Named tunings group by NAME, which is already serialization-agnostic. Custom
-# tunings group on a raw offsets STRING, which is not: the same physical bass
-# tuning stored as "-2 0 0 0" and "-2 0 0 0 0 0" would fragment into two facet
-# rows with split counts.
-#
-# For BASS we therefore group customs on `bass_tuning_key` — the tuning's
-# absolute open-string PITCHES, computed once at scan time
-# (tunings.bass_tuning_key) after the padded tail is truncated away. Pitch is
-# the identity that matters musically and it is serialization-independent, so
-# one physical tuning is one entry however it was authored. Guitar keeps the
-# offsets string (unchanged; six-element guitar arrays are not padded).
-#
-# The key is built HERE, once, and read by the facet listing, the filter WHERE
-# and the grouped member-match alike — a facet row that selected a different
-# set than it counted is exactly the bug this shared expression prevents.
-def _tuning_group_key_sql(alias: str, perspective: str = DEFAULT_PERSPECTIVE) -> str:
-    """The tuning grouping key (name for named tunings, canonical pitches or
-    raw offsets for customs) against an explicit table alias — the grouped
-    filter law (§7.1) evaluates chart-intrinsic predicates inside a member
-    subquery, where bare column names would resolve against the wrong scope."""
-    persp = _perspective(perspective)
-    name_sql, offsets_sql, _ = _effective_tuning_cols_sql(alias, perspective)
-    if persp.column_prefix:
-        # Fall back to the offsets string when the canonical key is absent
-        # (a fallback row borrowing the guitar tuning, or a row scanned before
-        # the key column existed) so a custom never groups under an empty key.
-        offsets_sql = (f"COALESCE(NULLIF({alias}.{persp.column('key')}, ''), "
-                       f"{offsets_sql})")
-    return (f"CASE WHEN {name_sql} = 'Custom Tuning' AND COALESCE({offsets_sql}, '') != '' "
-            f"THEN {offsets_sql} ELSE {name_sql} END")
-
-
-def _put_perspective_value(meta: dict, col: str):
-    """Value to store for one per-perspective column on a freshly-scanned row."""
-    if col.endswith("_low_pitch"):
-        val = meta.get(col)
-        return int(val) if isinstance(val, int) else None
-    if col.endswith("_sort_key"):
-        return int(meta.get(col, 0) or 0)
-    return meta.get(col, "") or ""
+def _tuning_group_key_sql(alias: str) -> str:
+    """The tuning grouping key (name for named tunings, raw offsets for
+    customs) against an explicit table alias — the grouped filter law (§7.1)
+    evaluates chart-intrinsic predicates inside a member subquery, where bare
+    column names would resolve against the wrong scope."""
+    return (f"CASE WHEN {alias}.tuning_name = 'Custom Tuning' AND COALESCE({alias}.tuning_offsets, '') != '' "
+            f"THEN {alias}.tuning_offsets ELSE {alias}.tuning_name END")
 
 
 # ── SQLite metadata cache ─────────────────────────────────────────────────────
 
-def _arrangements_all_bass(raw) -> bool:
-    """True when EVERY arrangement on a chart is a bass part (raw ``arrangements``
-    JSON, as stored). Mirrors the library grid's card rule: such a chart's tuning
-    must be scored against bass base pitches, or a 4-string bass tuning read as
-    guitar can false-match a guitarist. A chart with no arrangements is not bass.
-    """
-    try:
-        arrs = json.loads(raw) if raw else []
-    except (ValueError, TypeError):
-        return False
-    if not isinstance(arrs, list) or not arrs:
-        return False
-    return all(
-        isinstance(a, dict) and re.search(r"\bbass\b", str(a.get("name") or ""), re.I)
-        for a in arrs
-    )
-
-
 def _ensure_smart_names(arrangements: list[dict]) -> list[dict]:
     """Fill in missing ``smart_name`` fields and sort arrangements by smart order.
 
@@ -479,18 +381,7 @@ class MetadataDB:
                 tuning_offsets TEXT DEFAULT '',
                 genre TEXT DEFAULT '',
                 track_number INTEGER,
-                disc INTEGER,
-                bass_tuning_name TEXT,
-                bass_tuning_sort_key INTEGER,
-                bass_tuning_offsets TEXT,
-                bass_tuning_key TEXT,
-                bass_tuning_low_pitch INTEGER,
-                rhythm_tuning_name TEXT,
-                rhythm_tuning_sort_key INTEGER,
-                rhythm_tuning_offsets TEXT,
-                rhythm_tuning_key TEXT,
-                rhythm_tuning_low_pitch INTEGER,
-                tuning_low_pitch INTEGER
+                disc INTEGER
             )
         """)
         # Idempotent migrations for installs that predate each column.
@@ -517,32 +408,6 @@ class MetadataDB:
             # falls back to title order. Cache; repopulated on rescan.
             "ALTER TABLE songs ADD COLUMN track_number INTEGER",
             "ALTER TABLE songs ADD COLUMN disc INTEGER",
-            # Bass-arrangement tuning (the KwasimodoZAZA report): the song-level
-            # tuning columns above are guitar-first, so the library filter lied
-            # to bass players when the bass chart is tuned differently. Caches;
-            # repopulated on rescan. NULL (no literal default) is deliberate —
-            # it marks a pre-migration row the scanner must re-extract, while
-            # '' means "extracted, song has no bass arrangement" (see scan.py).
-            "ALTER TABLE songs ADD COLUMN bass_tuning_name TEXT",
-            "ALTER TABLE songs ADD COLUMN bass_tuning_sort_key INTEGER",
-            "ALTER TABLE songs ADD COLUMN bass_tuning_offsets TEXT",
-            # Canonical grouping key: the bass tuning's absolute open-string
-            # pitches. Keyed on PITCH, not the serialization-dependent offsets
-            # string, so one physical tuning is one facet entry however it was
-            # stored. See tunings.bass_tuning_key.
-            "ALTER TABLE songs ADD COLUMN bass_tuning_key TEXT",
-            # Lowest open-string MIDI pitch per perspective — the "playable
-            # without retuning" comparison (tunings.chart_is_playable_in).
-            "ALTER TABLE songs ADD COLUMN bass_tuning_low_pitch INTEGER",
-            "ALTER TABLE songs ADD COLUMN tuning_low_pitch INTEGER",
-            # The RHYTHM chart's own tuning: lead and rhythm arrangements can
-            # be tuned differently, which is the same bug a bassist hit,
-            # inside guitar. Same NULL-vs-'' contract as the bass family.
-            "ALTER TABLE songs ADD COLUMN rhythm_tuning_name TEXT",
-            "ALTER TABLE songs ADD COLUMN rhythm_tuning_sort_key INTEGER",
-            "ALTER TABLE songs ADD COLUMN rhythm_tuning_offsets TEXT",
-            "ALTER TABLE songs ADD COLUMN rhythm_tuning_key TEXT",
-            "ALTER TABLE songs ADD COLUMN rhythm_tuning_low_pitch INTEGER",
         ):
             try:
                 self.conn.execute(ddl)
@@ -749,14 +614,6 @@ class MetadataDB:
             )
         """)
         self.conn.execute("CREATE INDEX IF NOT EXISTS idx_song_stats_recent ON song_stats(last_played_at DESC)")
-        # Cumulative wall-clock play time (career "hours in genre" odometer).
-        # Fed by the same POST /api/stats the recorder already sends; additive
-        # + idempotent like every other song_stats change.
-        try:
-            self.conn.execute(
-                "ALTER TABLE song_stats ADD COLUMN seconds_total REAL NOT NULL DEFAULT 0")
-        except sqlite3.OperationalError:
-            pass
         # Playlists + the reserved "Saved for Later" system playlist. Additive.
         self.conn.execute("""
             CREATE TABLE IF NOT EXISTS playlists (
@@ -802,16 +659,6 @@ class MetadataDB:
                 self.conn.execute(_ddl)
             except sqlite3.OperationalError:
                 pass
-        # Manual playlist ordering (tester ask): `position` orders the
-        # PLAYLISTS themselves (playlist_songs.position orders songs within
-        # one). NULL = unpositioned — those sort alphabetically AFTER the
-        # manually positioned ones, and system playlists stay pinned first
-        # regardless (see list_playlists). Additive, idempotent — same
-        # pattern as `rules`/`kind` above.
-        try:
-            self.conn.execute("ALTER TABLE playlists ADD COLUMN position INTEGER")
-        except sqlite3.OperationalError:
-            pass
         # Wishlist / "wanted" (feedBack#636 item 4): a persisted, actionable
         # list of songs the user does NOT own yet — the *arr "Wanted/Monitored"
         # analogue. Unlike playlists (which reference owned local songs by
@@ -1054,9 +901,6 @@ class MetadataDB:
                     "best_accuracy": max(cur["best_accuracy"] or 0.0, r["best_accuracy"] or 0.0),
                     "last_score": newer["last_score"], "last_accuracy": newer["last_accuracy"],
                     "last_position": newer["last_position"],
-                    # Play time is additive: both encodings' hours belong to
-                    # the one canonical song.
-                    "seconds_total": (cur.get("seconds_total") or 0.0) + (r.get("seconds_total") or 0.0),
                     "last_played_at": newer["last_played_at"], "updated_at": newer["updated_at"],
                 }
             # Atomic swap: clear and reinsert the canonicalized set in one txn.
@@ -1230,31 +1074,16 @@ class MetadataDB:
         vals["artist"], vals["title"] = self._romaji_display(filename, vals["artist"], vals["title"])
         return vals
 
-    # Effective genre precedence: per-song OVERRIDE (Fix-metadata popup) →
-    # scanned pack genre → MusicBrainz enrichment primary genre (matched/manual rows
-    # only — a 'review'/'failed' candidate's genres could belong to the wrong
-    # recording). Applied at FILTER/FACET time (like the P4 artist alias) so a
-    # corrected or enriched genre is browsable. The vast majority of converted
-    # packs carry no `genres` manifest key, so without the enrichment leg the
-    # genre facet (and career passports) starve on real libraries. The
-    # correlated subqueries are used ONLY when overrides/enrichment genres
-    # actually exist; the common case stays on the plain indexed `genre`
-    # column. Genre stays a library-only overlay (it isn't a write-to-file
-    # field), so it never touches the pack.
-    _EFFECTIVE_GENRE_OVERRIDE_SQL = (
-        "COALESCE((SELECT o.value FROM song_field_override o "
-        "WHERE o.filename = songs.filename AND o.field = 'genre' "
-        "AND o.value IS NOT NULL AND o.value != ''), genre)"
-    )
+    # Effective genre = a per-song genre OVERRIDE (Fix-metadata popup) else the
+    # scanned pack genre. Applied at FILTER/FACET time (like the P4 artist alias)
+    # so a corrected genre is browsable — the correlated subquery is used ONLY
+    # when genre overrides actually exist; the common case stays on the plain
+    # indexed `genre` column. Genre stays a library-only overlay (it isn't a
+    # write-to-file field), so it never touches the pack.
     _EFFECTIVE_GENRE_SQL = (
         "COALESCE((SELECT o.value FROM song_field_override o "
         "WHERE o.filename = songs.filename AND o.field = 'genre' "
-        "AND o.value IS NOT NULL AND o.value != ''), "
-        "NULLIF(genre, ''), "
-        "(SELECT json_extract(e.genres, '$[0]') FROM song_enrichment e "
-        "WHERE e.filename = songs.filename AND e.match_state IN ('matched', 'manual') "
-        "AND e.genres IS NOT NULL AND e.genres NOT IN ('', '[]')), "
-        "'')"
+        "AND o.value IS NOT NULL AND o.value != ''), genre)"
     )
 
     def _has_genre_overrides(self) -> bool:
@@ -1262,25 +1091,9 @@ class MetadataDB:
             "SELECT 1 FROM song_field_override WHERE field = 'genre' "
             "AND value IS NOT NULL AND value != '' LIMIT 1").fetchone() is not None
 
-    def _has_enrichment_genres(self) -> bool:
-        try:
-            return self.conn.execute(
-                "SELECT 1 FROM song_enrichment WHERE match_state IN ('matched', 'manual') "
-                "AND genres IS NOT NULL AND genres NOT IN ('', '[]') "
-                "LIMIT 1").fetchone() is not None
-        except sqlite3.OperationalError:
-            return False  # stand-ins / DBs without the enrichment table
-
     def _effective_genre_expr(self) -> str:
-        """`genre` normally; the enrichment-aware COALESCE only when trusted
-        enrichment genres exist (which also proves the table exists — a
-        stand-in DB without song_enrichment must never receive SQL that
-        references it); the override-only form when just overrides exist."""
-        if self._has_enrichment_genres():
-            return self._EFFECTIVE_GENRE_SQL
-        if self._has_genre_overrides():
-            return self._EFFECTIVE_GENRE_OVERRIDE_SQL
-        return "genre"
+        """`genre` normally; the override-aware COALESCE only when overrides exist."""
+        return self._EFFECTIVE_GENRE_SQL if self._has_genre_overrides() else "genre"
 
     def set_song_tags(self, filename: str, tags) -> list:
         """Replace ALL of a song's tags with the given set (each normalized;
@@ -1880,8 +1693,7 @@ class MetadataDB:
     # ── Per-song practice stats ───────────────────────────────────────────---
     _STATS_COLS = (
         "filename", "arrangement", "plays", "best_score", "best_accuracy",
-        "last_score", "last_accuracy", "last_position", "seconds_total",
-        "last_played_at", "updated_at",
+        "last_score", "last_accuracy", "last_position", "last_played_at", "updated_at",
     )
 
     def _stats_row(self, filename: str, arrangement: int) -> dict | None:
@@ -2248,9 +2060,8 @@ class MetadataDB:
             self.conn.commit()
 
     def record_session(self, filename: str, arrangement: int, *, score: int,
-                       accuracy: float, last_position=None, seconds: float = 0) -> dict:
-        """Record a scored play: plays += 1, best_* = max, last_* = new.
-        `seconds` (wall-clock play time from the recorder) accrues."""
+                       accuracy: float, last_position=None) -> dict:
+        """Record a scored play: plays += 1, best_* = max, last_* = new."""
         from song_score import merge_stats
         with self._lock:
             existing = self._stats_row(filename, int(arrangement))
@@ -2260,9 +2071,8 @@ class MetadataDB:
             self.conn.execute(
                 """INSERT INTO song_stats
                        (filename, arrangement, plays, best_score, best_accuracy,
-                        last_score, last_accuracy, last_position, seconds_total,
-                        last_played_at, updated_at)
-                   VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?,
+                        last_score, last_accuracy, last_position, last_played_at, updated_at)
+                   VALUES (?, ?, ?, ?, ?, ?, ?, ?,
                            strftime('%Y-%m-%d %H:%M:%f','now'), strftime('%Y-%m-%d %H:%M:%f','now'))
                    ON CONFLICT(filename, arrangement) DO UPDATE SET
                        plays = excluded.plays,
@@ -2271,62 +2081,32 @@ class MetadataDB:
                        last_score = excluded.last_score,
                        last_accuracy = excluded.last_accuracy,
                        last_position = excluded.last_position,
-                       seconds_total = song_stats.seconds_total + excluded.seconds_total,
                        last_played_at = excluded.last_played_at,
                        updated_at = excluded.updated_at""",
                 (filename, int(arrangement), merged["plays"], merged["best_score"],
                  merged["best_accuracy"], merged["last_score"], merged["last_accuracy"],
-                 merged["last_position"], float(seconds or 0)),
+                 merged["last_position"]),
             )
             self.conn.commit()
         return self._stats_row(filename, int(arrangement))
 
-    def touch_position(self, filename: str, arrangement: int, last_position: float,
-                       seconds: float = 0) -> dict:
+    def touch_position(self, filename: str, arrangement: int, last_position: float) -> dict:
         """Persist just the resume position (no plays/score change), so
         Continue-Playing works for non-scored plays. Also stamps
         last_played_at — both /api/stats/recent and /api/session/continue
         filter/order on it, so a position-only touch must set it or the song
-        never surfaces as 'recent' / 'continue playing'. `seconds` accrues
-        wall-clock play time (career hours odometer)."""
+        never surfaces as 'recent' / 'continue playing'."""
         with self._lock:
             self.conn.execute(
                 """INSERT INTO song_stats (filename, arrangement, last_position,
-                                           seconds_total, last_played_at, updated_at)
-                   VALUES (?, ?, ?, ?, strftime('%Y-%m-%d %H:%M:%f','now'),
-                           strftime('%Y-%m-%d %H:%M:%f','now'))
-                   ON CONFLICT(filename, arrangement) DO UPDATE SET
-                       last_position = excluded.last_position,
-                       seconds_total = song_stats.seconds_total + excluded.seconds_total,
-                       last_played_at = excluded.last_played_at,
-                       updated_at = excluded.updated_at""",
-                (filename, int(arrangement), float(last_position), float(seconds or 0)),
-            )
-            self.conn.commit()
-        return self._stats_row(filename, int(arrangement))
-
-    def add_play_seconds(self, filename: str, arrangement: int, seconds: float) -> dict:
-        """Accrue wall-clock play time (no plays/score/position change) —
-        the recorder's seconds-only flush for unscored plays that ran to the
-        song's natural end (no resume position to touch there: `song:ended`
-        must not overwrite Continue with the end-of-song offset). Stamps
-        last_played_at like touch_position does: the song WAS played, so
-        /api/stats/recent and Continue ordering must see it. Accepted skew:
-        the recorder retries FAILED flushes later, which stamps recency at
-        retry time — rare (offline corner), self-healing on the next play,
-        and preferable to the alternative (keep-existing would leave repeat
-        plays looking stale, the common case)."""
-        with self._lock:
-            self.conn.execute(
-                """INSERT INTO song_stats (filename, arrangement, seconds_total,
                                            last_played_at, updated_at)
                    VALUES (?, ?, ?, strftime('%Y-%m-%d %H:%M:%f','now'),
                            strftime('%Y-%m-%d %H:%M:%f','now'))
                    ON CONFLICT(filename, arrangement) DO UPDATE SET
-                       seconds_total = song_stats.seconds_total + excluded.seconds_total,
+                       last_position = excluded.last_position,
                        last_played_at = excluded.last_played_at,
                        updated_at = excluded.updated_at""",
-                (filename, int(arrangement), float(seconds)),
+                (filename, int(arrangement), float(last_position)),
             )
             self.conn.commit()
         return self._stats_row(filename, int(arrangement))
@@ -2550,14 +2330,10 @@ class MetadataDB:
 
     def list_playlists(self) -> list[dict]:
         from urllib.parse import quote
-        # Order: system playlists pinned first, then manually positioned user
-        # playlists (position = drag order), then unpositioned ones
-        # alphabetically — so a manual order wins and a playlist created after
-        # a reorder still lands somewhere predictable (see reorder_playlists).
         rows = self.conn.execute(
             "SELECT id, name, system_key, created_at, updated_at, kind FROM playlists "
             "WHERE rules IS NULL "          # smart collections live in the source picker, not here
-            "ORDER BY (system_key IS NULL), (position IS NULL), position, name COLLATE NOCASE"
+            "ORDER BY (system_key IS NULL), name COLLATE NOCASE"
         ).fetchall()
         out = []
         for r in rows:
@@ -2715,9 +2491,7 @@ class MetadataDB:
         rows = self.conn.execute(
             f"""SELECT ps.filename, ps.position, s.title, s.artist, s.tuning_name,
                        ps.arrangement, ps.work_key, s.arrangements,
-                       (s.filename IS NULL) AS dead, s.tuning_offsets,
-                       s.bass_tuning_name, s.bass_tuning_offsets,
-                       s.rhythm_tuning_name, s.rhythm_tuning_offsets
+                       (s.filename IS NULL) AS dead
                FROM playlist_songs ps LEFT JOIN songs s ON s.filename = ps.filename
                WHERE ps.playlist_id = ? {dead_filter}
                ORDER BY ps.position, ps.filename""",
@@ -2729,17 +2503,6 @@ class MetadataDB:
             entry = {
                 "filename": r[0], "position": r[1],
                 "title": r[2] or r[0], "artist": r[3] or "", "tuning_name": r[4] or "",
-                # Offsets + the bass-only flag let the playlist tuning check score a
-                # row against the player's working tuning the same way the library
-                # grid's chips do: a NAME alone can't be scored (two "Custom Tuning"
-                # rows are different tunings), and coverage needs to know whether to
-                # measure against bass or guitar base pitches.
-                "tuning_offsets": r[9] or "",
-                "bass_tuning_name": r[10] or "",
-                "bass_tuning_offsets": r[11] or "",
-                "rhythm_tuning_name": r[12] or "",
-                "rhythm_tuning_offsets": r[13] or "",
-                "bass_only": _arrangements_all_bass(r[7]),
                 "art_url": f"/api/song/{quote(r[0])}/art",
             }
             if is_album:
@@ -2767,9 +2530,7 @@ class MetadataDB:
         if work_key:
             self._ensure_work_display()
             row = self.conn.execute(
-                "SELECT wd.filename, s.title, s.artist, s.tuning_name, s.arrangements, "
-                "s.tuning_offsets, s.bass_tuning_name, s.bass_tuning_offsets, "
-                "s.rhythm_tuning_name, s.rhythm_tuning_offsets "
+                "SELECT wd.filename, s.title, s.artist, s.tuning_name, s.arrangements "
                 "FROM work_display wd JOIN songs s ON s.filename = wd.filename "
                 "WHERE wd.effective_work_key = ? AND wd.is_group_representative = 1",
                 (work_key,)).fetchone()
@@ -2779,16 +2540,8 @@ class MetadataDB:
                     arrs = _ensure_smart_names(json.loads(row[4]) if row[4] else [])
                 except Exception:
                     arrs = []
-                # An orphan-resolved slot PLAYS a different chart, so it must report
-                # that chart's tuning to the check — not the dead pin's.
                 return {"resolved_filename": row[0], "title": row[1] or row[0],
                         "artist": row[2] or "", "tuning_name": row[3] or "",
-                        "tuning_offsets": row[5] or "",
-                        "bass_tuning_name": row[6] or "",
-                        "bass_tuning_offsets": row[7] or "",
-                        "rhythm_tuning_name": row[8] or "",
-                        "rhythm_tuning_offsets": row[9] or "",
-                        "bass_only": _arrangements_all_bass(row[4]),
                         "arrangements": arrs,
                         "art_url": f"/api/song/{quote(row[0])}/art",
                         "resolved_from_orphan": True}
@@ -2882,30 +2635,6 @@ class MetadataDB:
             self.conn.commit()
         return True
 
-    def reorder_playlists(self, ordered_ids: list[int]) -> bool:
-        """Persist a manual ordering of the playlists THEMSELVES: position =
-        index in `ordered_ids` (the songs-within sibling is reorder_playlist).
-        Caller (the route) validates the list is an exact permutation of the
-        current non-system playlist ids."""
-        with self._lock:
-            for pos, pid in enumerate(ordered_ids):
-                self.conn.execute(
-                    "UPDATE playlists SET position = ?, updated_at = datetime('now') WHERE id = ?",
-                    (pos, pid),
-                )
-            self.conn.commit()
-        return True
-
-    def clear_playlist_positions(self) -> bool:
-        """Drop every manual playlist position → back to alphabetical
-        (the "Sort A–Z" affordance)."""
-        with self._lock:
-            self.conn.execute(
-                "UPDATE playlists SET position = NULL, updated_at = datetime('now') "
-                "WHERE position IS NOT NULL")
-            self.conn.commit()
-        return True
-
     def toggle_saved(self, filename: str) -> bool:
         """Add/remove a song on the Saved-for-Later playlist. Returns new state.
         The presence check and the add/remove run under one lock so two
@@ -3006,39 +2735,16 @@ class MetadataDB:
     def favorite_set(self) -> set[str]:
         return {r[0] for r in self.conn.execute("SELECT filename FROM favorites").fetchall()}
 
-    # Every per-perspective column, in one place, so the SELECT, the INSERT and
-    # the scanner's "was this ever extracted?" check can never drift apart.
-    # NULL is meaningful on `name`/`key`/`low_pitch`: it marks a row written
-    # before the column existed, which the scanner re-extracts (see
-    # scan._has_unextracted_columns). '' / 0 means "extracted, no such chart".
-    _PERSPECTIVE_COLS = tuple(
-        p.column(suffix)
-        for p in ROLE_PERSPECTIVES
-        for suffix in ("name", "sort_key", "offsets", "key", "low_pitch")
-    ) + ("tuning_low_pitch",)
-    # Columns whose NULL means "never extracted" rather than "no such chart".
-    #
-    # low_pitch is deliberately NOT a marker: a song with no chart in that role
-    # legitimately has NULL there (nothing to compute a pitch from), so keying
-    # re-extraction on it would re-scan those rows on every single pass and
-    # never converge. `name` and `key` carry the signal instead — they are ''
-    # when extracted-but-absent, NULL only when the column predates the row.
-    _EXTRACTION_MARKER_COLS = tuple(
-        p.column(suffix) for p in ROLE_PERSPECTIVES for suffix in ("name", "key")
-    )
-
     def get(self, filename: str, mtime: float, size: int) -> dict | None:
         cache_key = str(filename)
-        pcols = ", ".join(self._PERSPECTIVE_COLS)
         with self._lock:
             row = self.conn.execute(
                 "SELECT mtime, size, title, artist, album, year, duration, tuning, arrangements, has_lyrics, "
-                "format, stem_count, stem_ids, tuning_name, tuning_sort_key, tuning_offsets, "
-                f"{pcols} "
+                "format, stem_count, stem_ids, tuning_name, tuning_sort_key, tuning_offsets "
                 "FROM songs WHERE filename = ?", (cache_key,)
             ).fetchone()
         if row and row[0] == mtime and row[1] == size and row[2]:
-            out = {
+            return {
                 "title": row[2], "artist": row[3], "album": row[4],
                 "year": row[5], "duration": row[6], "tuning": row[7],
                 "arrangements": json.loads(row[8]) if row[8] else [],
@@ -3050,15 +2756,6 @@ class MetadataDB:
                 "tuning_sort_key": int(row[14] or 0),
                 "tuning_offsets": row[15] or "",
             }
-            for i, col in enumerate(self._PERSPECTIVE_COLS, start=16):
-                val = row[i]
-                if col in self._EXTRACTION_MARKER_COLS:
-                    out[col] = val          # NULL preserved — drives re-extraction
-                elif col.endswith("_sort_key"):
-                    out[col] = int(val or 0)
-                else:
-                    out[col] = val or ""
-            return out
         return None
 
     def put(self, filename: str, mtime: float, size: int, meta: dict):
@@ -3066,9 +2763,8 @@ class MetadataDB:
             self.conn.execute(
                 "INSERT OR REPLACE INTO songs "
                 "(filename, mtime, size, title, artist, album, year, duration, tuning, arrangements, "
-                "has_lyrics, format, stem_count, stem_ids, tuning_name, tuning_sort_key, tuning_offsets, genre, track_number, disc, "
-                + ", ".join(self._PERSPECTIVE_COLS) + ") "
-                "VALUES (" + ", ".join(["?"] * (20 + len(self._PERSPECTIVE_COLS))) + ")",
+                "has_lyrics, format, stem_count, stem_ids, tuning_name, tuning_sort_key, tuning_offsets, genre, track_number, disc) "
+                "VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)",
                 (filename, mtime, size, meta.get("title", ""), meta.get("artist", ""),
                  meta.get("album", ""), meta.get("year", ""), meta.get("duration", 0),
                  meta.get("tuning", ""), json.dumps(meta.get("arrangements", [])),
@@ -3081,14 +2777,7 @@ class MetadataDB:
                  meta.get("tuning_offsets", "") or "",
                  meta.get("genre", "") or "",
                  meta.get("track_number"),
-                 meta.get("disc"),
-                 # A put() row is by definition freshly extracted, so the
-                 # marker columns must never be written NULL — that state is
-                 # reserved for rows predating the column, which re-extract.
-                 # low_pitch is the exception: NULL there means "this tuning
-                 # has no computable pitch" (unusable offsets), and the
-                 # playable filter treats unknown as not-playable.
-                 *[_put_perspective_value(meta, col) for col in self._PERSPECTIVE_COLS]),
+                 meta.get("disc")),
             )
             self.conn.commit()
             # A song's identity may have changed → the grouping read-model is stale.
@@ -3568,8 +3257,6 @@ class MetadataDB:
                      match_states: list[str] | None = None,
                      genre: list[str] | None = None,
                      naming_mode: str = "legacy",
-                     instrument: str = DEFAULT_PERSPECTIVE,
-                     playable_from_pitch: int | None = None,
                      include_intrinsic: bool = True) -> tuple[str, list]:
         """Shared WHERE-clause builder for query_page / query_artists /
         query_stats. Returns (where_sql, params). Leading 'WHERE' is
@@ -3676,8 +3363,7 @@ class MetadataDB:
                 "songs", format_filter=format_filter,
                 arrangements_has=arrangements_has, arrangements_lacks=arrangements_lacks,
                 stems_has=stems_has, stems_lacks=stems_lacks,
-                has_lyrics=has_lyrics, tunings=tunings, naming_mode=naming_mode,
-                instrument=instrument, playable_from_pitch=playable_from_pitch)
+                has_lyrics=has_lyrics, tunings=tunings, naming_mode=naming_mode)
             where += ifrag
             params += iparams
         return where, params
@@ -3689,9 +3375,7 @@ class MetadataDB:
                                stems_lacks: list[str] | None = None,
                                has_lyrics: int | None = None,
                                tunings: list[str] | None = None,
-                               naming_mode: str = "legacy",
-                               instrument: str = DEFAULT_PERSPECTIVE,
-                               playable_from_pitch: int | None = None) -> tuple[str, list]:
+                               naming_mode: str = "legacy") -> tuple[str, list]:
         """CHART-INTRINSIC predicates (format / arrangements / stems / lyrics /
         tuning) as ' AND …' fragments against an explicit table alias. Flat
         queries apply them to `songs` directly; grouped queries evaluate them
@@ -3834,32 +3518,10 @@ class MetadataDB:
                 placeholders = ",".join(["?"] * len(tn))
                 # Match the same grouping key tuning_names() returns so a single
                 # "Custom Tuning" pill selects exactly its offset set while named
-                # tunings still match by name. `instrument` swaps in the
-                # effective bass tuning key (guitar fallback) — the facet and
-                # this WHERE must use the same expression or they disagree.
-                where += (f" AND {_tuning_group_key_sql(alias, instrument)} "
+                # tunings still match by name.
+                where += (f" AND {_tuning_group_key_sql(alias)} "
                           f"COLLATE NOCASE IN ({placeholders})")
                 params += tn
-        if playable_from_pitch is not None:
-            # "Playable without retuning" — the mode the tester actually wants
-            # ("don't make me retune"), offered ALONGSIDE exact match, not
-            # instead of it. A chart needs no retune when its lowest required
-            # pitch is reachable, and every pitch above your lowest open string
-            # is reachable by fretting, so the comparison is:
-            #
-            #     your lowest open pitch <= the chart's lowest open pitch
-            #
-            # That is why a 5-string bass (low B) covers every 4-string
-            # standard AND every drop-D chart untouched.
-            #
-            # CONSERVATIVE BY CONSTRUCTION: a chart whose low pitch we could
-            # not compute (NULL) is EXCLUDED rather than assumed playable —
-            # wrongly claiming playability costs a mid-practice retune, which
-            # is the failure this whole feature exists to prevent. See
-            # tunings.chart_is_playable_in for the full reasoning + limits.
-            low_sql = _effective_low_pitch_sql(alias, instrument)
-            where += f" AND {low_sql} IS NOT NULL AND {low_sql} >= ?"
-            params.append(int(playable_from_pitch))
         return where, params
 
     # Under group=1, chart-intrinsic filters match if ANY member of the work
@@ -4127,9 +3789,7 @@ class MetadataDB:
                    genre: list[str] | None = None,
                    after: str | None = None,
                    group: bool = False,
-                   naming_mode: str = "legacy",
-                   instrument: str = DEFAULT_PERSPECTIVE,
-                   playable_from_pitch: int | None = None) -> tuple[list[dict], int]:
+                   naming_mode: str = "legacy") -> tuple[list[dict], int]:
         """Server-side paginated search. Returns (songs, total_count).
 
         `after` is an opaque keyset cursor (the last row of the previous page).
@@ -4158,9 +3818,7 @@ class MetadataDB:
             has_lyrics=has_lyrics, tunings=tunings, mastery=mastery,
             tags_has=tags_has, user_difficulty_in=user_difficulty_in,
             match_states=match_states, genre=genre,
-            naming_mode=naming_mode, instrument=instrument,
-            playable_from_pitch=playable_from_pitch,
-            include_intrinsic=not group,
+            naming_mode=naming_mode, include_intrinsic=not group,
         )
         ifrag, iparams = "", []
         if group:
@@ -4169,14 +3827,12 @@ class MetadataDB:
                 "m", format_filter=format_filter,
                 arrangements_has=arrangements_has, arrangements_lacks=arrangements_lacks,
                 stems_has=stems_has, stems_lacks=stems_lacks,
-                has_lyrics=has_lyrics, tunings=tunings, naming_mode=naming_mode,
-                instrument=instrument, playable_from_pitch=playable_from_pitch)
+                has_lyrics=has_lyrics, tunings=tunings, naming_mode=naming_mode)
             mfrag, mparams = self._grouped_member_match(ifrag, iparams)
             where += mfrag
             params += mparams
             where += self._GROUP_REP_PREDICATE
 
-        _eff_tuning_name, _, _eff_tuning_sort = _effective_tuning_cols_sql("songs", instrument)
         sort_map = {
             # Artist sorts order WITHIN an artist by title (the tree view's
             # artist -> album -> title feel) instead of raw filename — the
@@ -4210,15 +3866,11 @@ class MetadataDB:
             # behind, and a NULL `tuning_name` in `(tuning_name = '')`
             # evaluates to NULL itself (which sorts ahead of 0 in
             # ASC), defeating the push-to-bottom intent.
-            #
-            # Under `instrument=bass` the effective expressions swap in
-            # the bass arrangement's tuning (guitar fallback) so a bass
-            # player's tuning sort orders by the tuning they'd play.
             "tuning": (
-                f"(COALESCE({_eff_tuning_name}, '') = '') ASC, "
-                f"ABS(COALESCE({_eff_tuning_sort}, 0)), "
-                f"COALESCE({_eff_tuning_sort}, 0) ASC, "
-                f"COALESCE({_eff_tuning_name}, '') COLLATE NOCASE"
+                "(COALESCE(tuning_name, '') = '') ASC, "
+                "ABS(COALESCE(tuning_sort_key, 0)), "
+                "COALESCE(tuning_sort_key, 0) ASC, "
+                "COALESCE(tuning_name, '') COLLATE NOCASE"
             ),
             # Year sort (feedBack#128). Empty-year rows pushed to the
             # bottom for both directions; otherwise CAST so '2010' >
@@ -4311,9 +3963,7 @@ class MetadataDB:
 
             cols = ("SELECT filename, title, artist, album, year, duration, tuning, "
                     "arrangements, has_lyrics, mtime, format, stem_count, stem_ids, "
-                    "tuning_name, tuning_offsets, bass_tuning_name, bass_tuning_offsets, "
-                    "rhythm_tuning_name, rhythm_tuning_offsets "
-                    "FROM songs ")
+                    "tuning_name, tuning_offsets FROM songs ")
             cursor = _decode_cursor(after) if after else None
             eff_sort = _effective_keyset_sort(sort, direction)
             if cursor and eff_sort in _KEYSET_SORTS:
@@ -4346,30 +3996,8 @@ class MetadataDB:
                 "stem_ids": json.loads(r[12]) if r[12] else [],
                 "tuning_name": r[13] or "",
                 "tuning_offsets": r[14] or "",
-                # '' when the song has no bass arrangement (or the row predates
-                # '' when the song has no such chart (or the row predates the
-                # columns) — clients fall back to tuning_name.
-                "bass_tuning_name": r[15] or "",
-                "bass_tuning_offsets": r[16] or "",
-                "rhythm_tuning_name": r[17] or "",
-                "rhythm_tuning_offsets": r[18] or "",
                 "has_estd": r[0] in estd, "favorite": r[0] in favs,
             })
-        # PROVENANCE (non-default perspectives): a row shown to a bass or
-        # rhythm player either carries that chart's own tuning (native) or is
-        # borrowing the guitar-derived song tuning (inferred). The fallback is
-        # deliberate — a third of a real library has no bass chart and
-        # excluding it would be worse — but it must never be SILENT, or we
-        # reproduce the original bug in a new place. The client marks inferred
-        # rows; it can't infer this itself without duplicating the COALESCE.
-        #
-        # guitar-lead adds NOTHING here, so the default payload is unchanged.
-        _persp = _perspective(instrument)
-        if _persp.column_prefix:
-            _name_key = _persp.column("name")
-            for s in songs:
-                s["tuning_perspective"] = _persp.id
-                s["tuning_inferred"] = not s.get(_name_key)
         # Personal layer (difficulty + tags) rides along like `favorite`, so a
         # card can badge it without a second request. Notes stay OUT of the list
         # payload (they can be long) — fetch per-song via /user-meta. Batched to
@@ -4466,7 +4094,7 @@ class MetadataDB:
         rows = self.conn.execute(
             "SELECT mw.effective_work_key, m.filename, m.title, m.duration, m.tuning, "
             "m.arrangements, m.has_lyrics, m.mtime, m.format, m.stem_count, m.stem_ids, "
-            "m.tuning_name, m.tuning_offsets, m.bass_tuning_name, m.bass_tuning_offsets "
+            "m.tuning_name, m.tuning_offsets "
             "FROM songs m JOIN work_display mw ON mw.filename = m.filename "
             f"WHERE mw.effective_work_key IN ({ph}){intrinsic_frag} "
             "ORDER BY mw.is_group_representative DESC, m.mtime DESC, m.filename",
@@ -4487,7 +4115,6 @@ class MetadataDB:
                 "stem_count": int(m[9] or 0),
                 "stem_ids": json.loads(m[10]) if m[10] else [],
                 "tuning_name": m[11] or "", "tuning_offsets": m[12] or "",
-                "bass_tuning_name": m[13] or "", "bass_tuning_offsets": m[14] or "",
             }
 
     def query_artists(self, letter: str = "", q: str = "",
@@ -4502,9 +4129,7 @@ class MetadataDB:
                       stems_lacks: list[str] | None = None,
                       has_lyrics: int | None = None,
                       tunings: list[str] | None = None,
-                      naming_mode: str = "legacy",
-                      instrument: str = DEFAULT_PERSPECTIVE,
-                      playable_from_pitch: int | None = None) -> tuple[list[dict], int]:
+                      naming_mode: str = "legacy") -> tuple[list[dict], int]:
         """Get artists grouped by letter with their albums and songs. Returns (artists, total_artists)."""
         where, params = self._build_where(
             q=q, favorites_only=favorites_only, format_filter=format_filter,
@@ -4512,7 +4137,6 @@ class MetadataDB:
             arrangements_has=arrangements_has, arrangements_lacks=arrangements_lacks,
             stems_has=stems_has, stems_lacks=stems_lacks,
             has_lyrics=has_lyrics, tunings=tunings, naming_mode=naming_mode,
-            instrument=instrument, playable_from_pitch=playable_from_pitch,
         )
         # Canonicalize artists at display when aliases exist (P4): dedupe / group /
         # letter / order on the EFFECTIVE artist so "ACDC" + "AC/DC" list as one
@@ -4548,7 +4172,7 @@ class MetadataDB:
 
         rows = self.conn.execute(
             f"SELECT filename, title, ({art_expr}) as artist, album, year, duration, tuning, arrangements, has_lyrics, "
-            f"format, stem_count, stem_ids, tuning_name, bass_tuning_name "
+            f"format, stem_count, stem_ids, tuning_name "
             f"FROM songs {song_where} ORDER BY ({art_expr}) COLLATE NOCASE, album COLLATE NOCASE, title COLLATE NOCASE",
             song_params
         ).fetchall()
@@ -4581,7 +4205,6 @@ class MetadataDB:
                 "stem_count": int(r[10] or 0),
                 "stem_ids": json.loads(r[11]) if r[11] else [],
                 "tuning_name": r[12] or "",
-                "bass_tuning_name": r[13] or "",
                 "has_estd": r[0] in estd,
                 "favorite": r[0] in favs,
                 "user_difficulty": udm.get(r[0]),
@@ -4603,8 +4226,7 @@ class MetadataDB:
                      stems_has=None, stems_lacks=None,
                      has_lyrics=None, tunings=None, mastery=None,
                      match_states=None, genre=None,
-                     naming_mode="legacy", instrument=DEFAULT_PERSPECTIVE,
-                     playable_from_pitch=None, page=0, size=120):
+                     naming_mode="legacy", page=0, size=120):
         """Distinct (artist, album) groups with a track count + a representative
         cover song, for the album-condensed browse (paged by album). Rows with no
         album name are excluded -- they can't form an album card. Same filters as
@@ -4616,8 +4238,7 @@ class MetadataDB:
             stems_has=stems_has, stems_lacks=stems_lacks,
             has_lyrics=has_lyrics, tunings=tunings, mastery=mastery,
             match_states=match_states, genre=genre,
-            naming_mode=naming_mode, instrument=instrument,
-            playable_from_pitch=playable_from_pitch,
+            naming_mode=naming_mode,
         )
         awhere = where + " AND album IS NOT NULL AND album != ''"
         total = self.conn.execute(
@@ -4648,9 +4269,7 @@ class MetadataDB:
                     sort: str = "artist",
                     want_sort_letters: bool = False,
                     group: bool = False,
-                    naming_mode: str = "legacy",
-                    instrument: str = DEFAULT_PERSPECTIVE,
-                    playable_from_pitch: int | None = None) -> dict:
+                    naming_mode: str = "legacy") -> dict:
         """Aggregate stats for the letter bar. Accepts the same filter
         params as query_page so the letter counts stay synchronized
         with the grid when filters are active.
@@ -4677,8 +4296,7 @@ class MetadataDB:
             arrangements_has=arrangements_has, arrangements_lacks=arrangements_lacks,
             stems_has=stems_has, stems_lacks=stems_lacks,
             has_lyrics=has_lyrics, tunings=tunings, match_states=match_states,
-            naming_mode=naming_mode, instrument=instrument,
-            playable_from_pitch=playable_from_pitch,
+            naming_mode=naming_mode,
             include_intrinsic=not group,
         )
         if group:
@@ -4690,8 +4308,7 @@ class MetadataDB:
                 "m", format_filter=format_filter,
                 arrangements_has=arrangements_has, arrangements_lacks=arrangements_lacks,
                 stems_has=stems_has, stems_lacks=stems_lacks,
-                has_lyrics=has_lyrics, tunings=tunings, naming_mode=naming_mode,
-                instrument=instrument, playable_from_pitch=playable_from_pitch)
+                has_lyrics=has_lyrics, tunings=tunings, naming_mode=naming_mode)
             mfrag, mparams = self._grouped_member_match(ifrag, iparams)
             where += mfrag
             params += mparams

lib/notation_lift.py

@@ -54,20 +54,15 @@ MIDDLE_C = 60
 
 def decode_wire_notes(arr_data: dict) -> list[dict]:
     """Decode an arrangement JSON's notes + chord notes to
-    ``[{"t": float, "midi": int, "sus": float, "hand": str|None}, ...]``
-    sorted by time.
+    ``[{"t": float, "midi": int, "sus": float}, ...]`` sorted by time.
 
     Keys content packs absolute MIDI as ``midi = s*24 + f`` (sloppak-spec
     §5.3 legacy fallback). Sustain is the ``sus`` field (``l`` accepted as a
-    legacy alias). ``hand`` is the authored per-note hand assignment
-    (``'lh'``/``'rh'`` — e.g. from a MusicXML grand-staff import via the
-    editor); a strict enum decode, anything else reads as ``None``
-    (unassigned) so junk can never steer the hand split. Entries with
-    malformed fields are skipped.
+    legacy alias). Entries with malformed fields are skipped.
     """
     out: list[dict] = []
 
-    def _push(t, s, f, sus, hand):
+    def _push(t, s, f, sus):
         try:
             t = float(t)
             midi = int(s) * 24 + int(f)
@@ -75,15 +70,11 @@ def decode_wire_notes(arr_data: dict) -> list[dict]:
         except (TypeError, ValueError):
             return
         if 0 <= midi <= 127:
-            out.append({
-                "t": t, "midi": midi, "sus": max(0.0, sus),
-                "hand": hand if hand in ("lh", "rh") else None,
-            })
+            out.append({"t": t, "midi": midi, "sus": max(0.0, sus)})
 
     for n in arr_data.get("notes") or []:
         if isinstance(n, dict):
-            _push(n.get("t"), n.get("s"), n.get("f"), n.get("sus", n.get("l")),
-                  n.get("hand"))
+            _push(n.get("t"), n.get("s"), n.get("f"), n.get("sus", n.get("l")))
     for ch in arr_data.get("chords") or []:
         if not isinstance(ch, dict):
             continue
@@ -92,7 +83,7 @@ def decode_wire_notes(arr_data: dict) -> list[dict]:
             if isinstance(cn, dict):
                 # Chord notes carry no own time — they sound at the chord's t.
                 _push(cn.get("t", ch_t), cn.get("s"), cn.get("f"),
-                      cn.get("sus", cn.get("l")), cn.get("hand"))
+                      cn.get("sus", cn.get("l")))
 
     out.sort(key=lambda n: (n["t"], n["midi"]))
     return out
@@ -112,31 +103,14 @@ def group_simultaneous(notes: list[dict]) -> list[list[dict]]:
 
 
 def split_hands(notes: list[dict]) -> dict[str, list[dict]]:
-    """Assign every note to ``rh`` or ``lh``.
+    """Assign every note to ``rh`` or ``lh`` per the heuristic.
 
-    An AUTHORED per-note ``hand`` ('lh'/'rh' — a MusicXML grand-staff import
-    or a hand edit in the editor) always wins: those notes go straight to
-    their hand and are REMOVED from the group before any heuristic math runs,
-    so one explicit assignment can never skew its chordmates' guesses (e.g.
-    an authored LH melody note above middle C must not drag the group mean
-    down and flip the remaining notes).
-
-    The remaining unassigned notes take the heuristic, per simultaneous
-    group: a span > 12 semitones splits at the largest internal interval gap
-    (low side → lh); otherwise the whole group goes by mean pitch vs middle C
-    (≥ 60 → rh).
+    Per simultaneous group: a span > 12 semitones splits at the largest
+    internal interval gap (low side → lh); otherwise the whole group goes by
+    mean pitch vs middle C (≥ 60 → rh).
     """
     hands: dict[str, list[dict]] = {"rh": [], "lh": []}
-    for full_group in group_simultaneous(notes):
-        # Authored hands first — explicit notes leave the group entirely.
-        group = []
-        for n in full_group:
-            if n.get("hand") in ("lh", "rh"):
-                hands[n["hand"]].append(n)
-            else:
-                group.append(n)
-        if not group:
-            continue
+    for group in group_simultaneous(notes):
         pitches = sorted(n["midi"] for n in group)
         span = pitches[-1] - pitches[0]
         if len(pitches) > 1 and span > HAND_SPLIT_SPAN_SEMITONES:

lib/routers/library.py

@@ -19,7 +19,7 @@ from starlette.concurrency import run_in_threadpool
 
 import appstate
 from library_registry import (
-    _library_filter_args, _normalize_instrument, _sanitize_collection_rules,
+    _library_filter_args, _sanitize_collection_rules,
     _safe_art_redirect_url, _split_csv, _sync_collection_provider,
     _unregister_collection_provider,
 )
@@ -52,8 +52,7 @@ def _require_library_provider_capability(provider: object, capability: str) -> N
 
 
 _OPTIONAL_NEW_PROVIDER_KWARGS = ("naming_mode", "sort", "want_sort_letters", "after",
-                                 "mastery", "match_states", "instrument",
-                                 "playable_from_pitch")
+                                 "mastery", "match_states")
 
 
 def _filter_provider_kwargs(method: object, kwargs: dict) -> dict:
@@ -236,20 +235,9 @@ async def list_library(q: str = "", page: int = 0, size: int = 24, sort: str = "
                        has_lyrics: str = "", tunings: str = "", provider: str = "local",
                        mastery: str = "", tags: str = "", user_difficulty: str = "",
                        match: str = "", genre: str = "", after: str = "", group: int = 0,
-                       naming_mode: str = "legacy", instrument: str = "",
-                       tuning_match: str = "", playable_offsets: str = "",
-                       playable_instrument: str = "", playable_string_count: str = ""):
+                       naming_mode: str = "legacy"):
     """Paginated library search through the selected library provider.
 
-    `instrument` is the tuning PERSPECTIVE ("guitar-lead" default |
-    "guitar-rhythm" | "bass"): which arrangement's tuning the tuning
-    filter/sort speaks for, with a guitar fallback when a song has no chart in
-    that role.
-
-    `tuning_match=playable` switches the tuning filter from exact-match to
-    "playable without retuning" against the caller's current tuning
-    (`playable_offsets` + `playable_instrument` + `playable_string_count`).
-
     `after` is an opaque keyset cursor (feedBack#636 item 3): pass back the
     `next_cursor` from the previous response to fetch the next page with a
     WHERE-seek instead of OFFSET. Providers that don't support it ignore it and
@@ -282,10 +270,7 @@ async def list_library(q: str = "", page: int = 0, size: int = 24, sort: str = "
             artist=artist, album=album,
             arrangements_has=arrangements_has, arrangements_lacks=arrangements_lacks,
             stems_has=stems_has, stems_lacks=stems_lacks,
-            has_lyrics=has_lyrics, tunings=tunings, instrument=instrument,
-            tuning_match=tuning_match, playable_offsets=playable_offsets,
-            playable_instrument=playable_instrument,
-            playable_string_count=playable_string_count,
+            has_lyrics=has_lyrics, tunings=tunings,
         ),
     )
     # The cursor to resume after this page (effective sort folds in dir=desc).
@@ -307,7 +292,7 @@ async def list_library_albums(q: str = "", page: int = 0, size: int = 120,
                               stems_has: str = "", stems_lacks: str = "",
                               has_lyrics: str = "", tunings: str = "", mastery: str = "",
                               match: str = "", genre: str = "",
-                              provider: str = "local", instrument: str = ""):
+                              provider: str = "local"):
     """Album-condensed browse: distinct (artist, album) groups with a track count
     and a representative cover song. Paged by album. Same filters as /api/library."""
     size = min(size, 500)
@@ -321,7 +306,7 @@ async def list_library_albums(q: str = "", page: int = 0, size: int = 120,
             q=q, favorites=favorites, format=format, artist=artist, album=album,
             arrangements_has=arrangements_has, arrangements_lacks=arrangements_lacks,
             stems_has=stems_has, stems_lacks=stems_lacks,
-            has_lyrics=has_lyrics, tunings=tunings, instrument=instrument,
+            has_lyrics=has_lyrics, tunings=tunings,
         ),
     )
     return {"albums": albums, "total": total, "page": page, "size": size}
@@ -334,9 +319,7 @@ async def list_artists(letter: str = "", q: str = "", favorites: int = 0, page:
                        arrangements_has: str = "", arrangements_lacks: str = "",
                        stems_has: str = "", stems_lacks: str = "",
                        has_lyrics: str = "", tunings: str = "", provider: str = "local",
-                       naming_mode: str = "legacy", instrument: str = "",
-                       tuning_match: str = "", playable_offsets: str = "",
-                       playable_instrument: str = "", playable_string_count: str = ""):
+                       naming_mode: str = "legacy"):
     """Get artists grouped by letter with albums and songs (for tree view)."""
     size = min(size, 100)
     library_provider = _get_library_provider(provider)
@@ -353,7 +336,7 @@ async def list_artists(letter: str = "", q: str = "", favorites: int = 0, page:
             artist=artist, album=album,
             arrangements_has=arrangements_has, arrangements_lacks=arrangements_lacks,
             stems_has=stems_has, stems_lacks=stems_lacks,
-            has_lyrics=has_lyrics, tunings=tunings, instrument=instrument,
+            has_lyrics=has_lyrics, tunings=tunings,
         ),
     )
     return {"artists": artists, "total_artists": total, "page": page, "size": size}
@@ -367,10 +350,7 @@ async def library_stats(favorites: int = 0, q: str = "", format: str = "",
                         has_lyrics: str = "", tunings: str = "", provider: str = "local",
                         match: str = "",
                         sort: str = "artist", sort_letters: int = 0,
-                        group: int = 0, naming_mode: str = "legacy",
-                        instrument: str = "", tuning_match: str = "",
-                        playable_offsets: str = "", playable_instrument: str = "",
-                        playable_string_count: str = ""):
+                        group: int = 0, naming_mode: str = "legacy"):
     """Aggregate stats for the UI. Accepts the same filter params as
     /api/library so the letter bar mirrors the active grid filter set.
     `sort` selects the column the jump rail's `sort_letters` keys on;
@@ -395,10 +375,7 @@ async def library_stats(favorites: int = 0, q: str = "", format: str = "",
             artist=artist, album=album,
             arrangements_has=arrangements_has, arrangements_lacks=arrangements_lacks,
             stems_has=stems_has, stems_lacks=stems_lacks,
-            has_lyrics=has_lyrics, tunings=tunings, instrument=instrument,
-            tuning_match=tuning_match, playable_offsets=playable_offsets,
-            playable_instrument=playable_instrument,
-            playable_string_count=playable_string_count,
+            has_lyrics=has_lyrics, tunings=tunings,
         ),
     )
 
@@ -430,20 +407,14 @@ def library_genres(provider: str = "local"):
 
 
 @router.get("/api/library/tuning-names")
-async def list_tuning_names(provider: str = "local", instrument: str = ""):
+async def list_tuning_names(provider: str = "local"):
     """Distinct tuning names present in the library, with per-tuning
     counts. Powers the tuning multi-select. Sorted by `tuning_sort_key`
     so names appear in the same musical order the sort uses
-    (feedBack#22) — E Standard first, then nearest neighbors.
-
-    `instrument=bass` groups by each song's bass-arrangement tuning
-    (guitar-derived fallback for songs without a bass chart) so bass
-    players see the tunings they'd actually play. Providers that predate
-    the kwarg simply don't receive it (signature-filtered)."""
+    (feedBack#22) — E Standard first, then nearest neighbors."""
     library_provider = _get_library_provider(provider)
     _require_library_provider_capability(library_provider, "library.read")
-    return await _call_library_provider_async(
-        library_provider, "tuning_names", instrument=_normalize_instrument(instrument))
+    return await _call_library_provider_async(library_provider, "tuning_names")
 
 
 @router.get("/api/library/practice-suggestions")

lib/routers/playlists.py

@@ -70,37 +70,6 @@ def api_create_playlist(data: dict):
     return appstate.meta_db.create_playlist(name, kind=kind)
 
 
-@router.post("/api/playlists/reorder")
-def api_reorder_playlists(data: dict):
-    """Manual ordering of the playlists themselves (position = index in
-    `order`); the songs-within sibling is /api/playlists/{pid}/reorder.
-    System playlists stay pinned first and are not part of the order."""
-    order = data.get("order")
-    if not isinstance(order, list) or not all(
-            isinstance(i, int) and not isinstance(i, bool) for i in order):
-        return JSONResponse({"error": "order must be a list of playlist ids"}, status_code=400)
-    # Require an exact permutation of the current non-system playlist ids: a
-    # list with duplicates, omissions, extras, unknown ids, or a system id
-    # would otherwise produce duplicate positions / a partial reorder while
-    # still returning 200 (mirrors the songs-within validation).
-    current = [p["id"] for p in appstate.meta_db.list_playlists() if not p["system_key"]]
-    if len(order) != len(current) or sorted(order) != sorted(current):
-        return JSONResponse(
-            {"error": "order must be a permutation of your playlists' ids"},
-            status_code=400,
-        )
-    appstate.meta_db.reorder_playlists(order)
-    return api_list_playlists()
-
-
-@router.post("/api/playlists/sort-alpha")
-def api_sort_playlists_alpha():
-    """Clear every manual playlist position → back to the alphabetical
-    default (system playlists were pinned first either way)."""
-    appstate.meta_db.clear_playlist_positions()
-    return api_list_playlists()
-
-
 @router.get("/api/playlists/{pid}")
 def api_get_playlist(pid: int):
     pl = appstate.meta_db.get_playlist(pid)

lib/routers/song.py

@@ -829,61 +829,9 @@ def post_song_gap_fill(filename: str, data: dict):
     return {"ok": True, "written": additions, "skipped": skipped}
 
 
-def _playable_stems_payload(filename: str, dlc) -> dict:
-    """The playable stems (id/url/default) + full-mix URL for a sloppak.
-
-    Why it exists: the stems plugin could only learn its stem list from the
-    highway's WS `ready`, which arrives once the highway is already up. So it
-    decoded, and then copied the whole song's PCM to its worklet, with the player
-    on screen — half a gigabyte of memcpy in one frame, ~700 ms, freezing the
-    venue video. Given the list at `song:loading` it can do all of that BEFORE the
-    highway appears, behind the loading overlay where a stall costs nothing.
-
-    The list MUST be the same one the WS sends a moment later. If it is not, the
-    plugin preloads a graph and then throws it away and rebuilds — strictly worse
-    than not preloading. So this does not reimplement the WS's construction, it
-    calls THE SAME FUNCTION: load_song, whose LoadedSloppak already carries the
-    partitioned stems and the resolved full mix, and then builds the URLs exactly
-    as ws_highway does. Drift is impossible by construction rather than by
-    agreement — which matters, because `full_mix` in particular is not simply the
-    `full` stem: load_song falls back to the deprecated `original_audio:` key for
-    every pack written before feedpak 1.15.0, and reimplementing that (I did, at
-    first) silently dropped the pristine full mix for most real libraries.
-
-    Opt-in (`?stems=1`) so the library's own metadata calls — the hot path — pay
-    nothing for it. Non-sloppak sources (archives, loose folders) have no stems
-    to preload: load_song raises and we return the empty list.
-    """
-    from urllib.parse import quote
-
-    try:
-        loaded = sloppak_mod.load_song(filename, dlc, appstate.sloppak_cache_dir)
-    except Exception:
-        return {"stems": [], "full_mix_url": None}
-
-    q_fn = quote(filename, safe="")
-
-    def _url(rel: str) -> str:
-        return f"/api/sloppak/{q_fn}/file/{quote(rel)}"
-
-    return {
-        "stems": [
-            {"id": s["id"], "url": _url(s["file"]), "default": s["default"],
-             **{k: s[k] for k in ("name", "description") if k in s}}
-            for s in loaded.stems
-        ],
-        "full_mix_url": _url(loaded.full_mix) if loaded.full_mix else None,
-    }
-
-
 @router.get("/api/song/{filename:path}")
-async def get_song_info(filename: str, stems: int = 0):
-    """Return song metadata, from cache or by extracting it from the song source.
-
-    `?stems=1` additionally returns the playable stem list with URLs, so the
-    stems plugin can start fetching/decoding on `song:loading` instead of waiting
-    for the highway's WS `ready` (see _playable_stems_payload).
-    """
+async def get_song_info(filename: str):
+    """Return song metadata, from cache or by extracting it from the song source."""
     import asyncio
     dlc = _get_dlc_dir()
     if not dlc:
@@ -906,21 +854,8 @@ async def get_song_info(filename: str, stems: int = 0):
 
     mtime, size = appstate.stat_for_cache(song_path)
     cached = appstate.meta_db.get(cache_key, mtime, size)
-    loop = asyncio.get_event_loop()
-
-    # The stem list is NOT stored in the metadata cache: that is a fixed-column
-    # table, and widening it would mean a migration plus a stale row for every
-    # song already scanned. It is cheap to read on demand (the pack is unpacked
-    # by then, so this is a plain manifest read), and only the opt-in caller pays.
-    async def _with_stems(meta: dict) -> dict:
-        if not stems:
-            return meta
-        extra = await loop.run_in_executor(
-            None, _playable_stems_payload, filename, dlc)
-        return {**meta, **extra}
-
     if cached:
-        return await _with_stems(cached)
+        return cached
 
     # Extract in thread pool
     def _extract():
@@ -928,5 +863,5 @@ async def get_song_info(filename: str, stems: int = 0):
         appstate.meta_db.put(cache_key, mtime, size, meta)
         return meta
 
-    meta = await loop.run_in_executor(None, _extract)
-    return await _with_stems(meta)
+    meta = await asyncio.get_event_loop().run_in_executor(None, _extract)
+    return meta

lib/routers/stats.py

@@ -76,22 +76,6 @@ def api_record_stats(data: dict):
     last_pos = data.get("lastPlayPosition", data.get("last_position"))
     if isinstance(last_pos, bool):   # float(False)=0.0 would otherwise store a bogus position
         return JSONResponse({"error": "lastPlayPosition must be a finite number"}, status_code=400)
-    # Optional wall-clock play time (career hours odometer). Bounded per POST:
-    # the recorder flushes on pause/stop/end, so a single delta beyond 6h is a
-    # clock artifact (suspend/sleep), not practice.
-    seconds = data.get("seconds")
-    if seconds is not None:
-        if isinstance(seconds, bool):
-            return JSONResponse({"error": "seconds must be a positive number"}, status_code=400)
-        try:
-            seconds = float(seconds)
-            if not math.isfinite(seconds):
-                raise ValueError("non-finite")
-        except (TypeError, ValueError, OverflowError):
-            return JSONResponse({"error": "seconds must be a positive number"}, status_code=400)
-        if not (0 < seconds <= 6 * 3600):
-            return JSONResponse({"error": "seconds must be between 0 and 21600"}, status_code=400)
-    seconds = seconds or 0.0
 
     # A scored session needs BOTH score and accuracy. Exactly one provided is
     # ambiguous — don't silently fall through to the position-only branch.
@@ -131,8 +115,7 @@ def api_record_stats(data: dict):
             except (TypeError, ValueError, OverflowError):
                 return JSONResponse({"error": "lastPlayPosition must be a finite number"}, status_code=400)
         row = appstate.meta_db.record_session(filename, arrangement, score=score,
-                                     accuracy=accuracy, last_position=last_pos,
-                                     seconds=seconds)
+                                     accuracy=accuracy, last_position=last_pos)
         # Unified XP + streak side-effects — never let these drop the stat write.
         progress = None
         try:
@@ -169,21 +152,6 @@ def api_record_stats(data: dict):
             log.warning("stats side-effects (progression) failed", exc_info=True)
         return {"stats": row, "progress": progress, "progression": progression_summary}
 
-    # Seconds-only accrual: an unscored play that ran to the song's natural
-    # end has play time to bank but no resume position to touch (song:ended
-    # must not overwrite Continue with the end-of-song offset). Still counts
-    # as playing today for the streak below.
-    if last_pos is None and seconds:
-        row = appstate.meta_db.add_play_seconds(filename, arrangement, seconds)
-        progress = None
-        try:
-            from datetime import date
-            appstate.meta_db.record_active_day(date.today().isoformat())
-            progress = appstate.meta_db.get_progress()
-        except Exception:
-            log.warning("stats side-effects (streak) failed", exc_info=True)
-        return {"stats": row, "progress": progress}
-
     # Position-only touch.
     if last_pos is None:
         return JSONResponse(
@@ -194,7 +162,7 @@ def api_record_stats(data: dict):
         pos = float(last_pos)
         if not math.isfinite(pos):
             raise ValueError("non-finite")
-        row = appstate.meta_db.touch_position(filename, arrangement, pos, seconds=seconds)
+        row = appstate.meta_db.touch_position(filename, arrangement, pos)
     except (TypeError, ValueError, OverflowError):
         return JSONResponse({"error": "lastPlayPosition must be a finite number"}, status_code=400)
     # A resume session still counts as playing today: advance the streak (no XP —

lib/routers/ws_highway.py

@@ -26,7 +26,6 @@ from fastapi import APIRouter, WebSocket, WebSocketDisconnect
 
 from song import (
     anchor_to_wire,
-    arrangement_is_bass,
     arrangement_string_count,
     base_open_string_midis,
     chord_template_to_wire,
@@ -144,21 +143,9 @@ def _sanitize_authors(manifest: dict | None) -> list[dict]:
     return out
 
 
-def _drum_part_id_for_wire(drum_parts: list[dict] | None, selected_id: str | None) -> str | None:
-    """Expose a part id only when the pack genuinely has multiple parts."""
-    return selected_id if selected_id is not None and len(drum_parts or []) > 1 else None
-
-
 @router.websocket("/ws/highway/{filename:path}")
-async def highway_ws(websocket: WebSocket, filename: str, arrangement: int = -1,
-                     naming_mode: str = "legacy", drum_part: str = ""):
-    """Stream song data for the highway renderer over WebSocket.
-
-    `drum_part` selects WHICH drum part's tab streams when the pack carries
-    several (feedpak 1.17.0 "drums as arrangements") — a part id from
-    song_info's `drum_parts`. Empty / unknown ids fall back to the primary,
-    so a stale or mistyped selection degrades to today's behavior instead of
-    silencing drums."""
+async def highway_ws(websocket: WebSocket, filename: str, arrangement: int = -1, naming_mode: str = "legacy"):
+    """Stream song data for the highway renderer over WebSocket."""
     await websocket.accept()
     structlog.contextvars.bind_contextvars(ws_conn_id=uuid.uuid4().hex[:8])
 
@@ -274,8 +261,9 @@ async def highway_ws(websocket: WebSocket, filename: str, arrangement: int = -1,
                 bass_idxs = [
                     i
                     for i, a in enumerate(song.arrangements)
-                    if arrangement_is_bass(a)
+                    if getattr(a, "path_bass", False)
                     or (smart_names[i] or "").lower().startswith("bass")
+                    or "bass" in (getattr(a, "name", "") or "").lower()
                 ]
                 if bass_idxs:
                     # Among the bass parts: (1) honor the saved default-arrangement
@@ -333,16 +321,11 @@ async def highway_ws(websocket: WebSocket, filename: str, arrangement: int = -1,
         audio_url = None
         audio_error: str | None = None  # Surfaced in song_info when audio_url is None
         stems_payload: list[dict] = []
-        # URL of the pack's complete mixdown — the RESERVED `full` stem (spec
-        # §5.3), which sloppak.load_song() lifts out of `stems` because it is a
-        # mixdown, not a layer. The stems plugin plays it while every stem slider
-        # is at unity (separation is lossy, so it beats re-summing the stems) and
-        # crosses to the separated stems as soon as one is attenuated.
-        #
-        # None when the pack has no mixdown to offer separately from its stems:
-        # a single-mix pack (its one stem IS the mixdown), a loose folder, or an
-        # archive.
-        full_mix_url: str | None = None
+        # URL of the single full-mix audio (sloppak `original_audio:`), when the
+        # pack ships one. The stems plugin uses this to play the untouched mix
+        # while every stem slider is at unity; None otherwise (separate stems
+        # only, loose folder, or archive).
+        original_audio_url: str | None = None
         if is_loose:
             # Loose folder filenames are relative paths (artist/album/song).
             # Hash the *canonical* dlc-relative path (so two URL spellings
@@ -380,29 +363,23 @@ async def highway_ws(websocket: WebSocket, filename: str, arrangement: int = -1,
             q_fn = quote(filename, safe="")
             for s in loaded_slop.stems:
                 url = f"/api/sloppak/{q_fn}/file/{quote(s['file'])}"
-                stems_payload.append(
-                    {"id": s["id"], "url": url, "default": s["default"],
-                     **{k: s[k] for k in ("name", "description") if k in s}})
+                stems_payload.append({"id": s["id"], "url": url, "default": s["default"]})
             # Full-mix URL (served by the same /api/sloppak/.../file/ endpoint).
-            if loaded_slop is not None and loaded_slop.full_mix:
-                full_mix_url = (
-                    f"/api/sloppak/{q_fn}/file/{quote(loaded_slop.full_mix)}"
+            if loaded_slop is not None and loaded_slop.original_audio:
+                original_audio_url = (
+                    f"/api/sloppak/{q_fn}/file/{quote(loaded_slop.original_audio)}"
                 )
             if stems_payload:
                 # Stems present: keep the core <audio> pointed at stem[0]. This
                 # URL is only ever heard in the degraded path (stems plugin
                 # refuses takeover / decode fails); the full-mix↔stems switch is
-                # driven client-side by `full_mix_url`, not `audio_url`.
+                # driven client-side by `original_audio_url`, not `audio_url`.
                 audio_url = stems_payload[0]["url"]
-            elif full_mix_url:
+            elif original_audio_url:
                 # Stem-less full-mix pack: nothing to separate, so play the full
                 # mix natively through the core <audio>. The stems plugin's
                 # onSongReady returns early on an empty stems list (no graph).
-                # Reachable only via the deprecated `original_audio:` key, whose
-                # packs put the mixdown outside `stems` — a pack that carries its
-                # mixdown as the `full` stem has it IN `stems`, so it lands in the
-                # branch above with stems_payload == [full].
-                audio_url = full_mix_url
+                audio_url = original_audio_url
             else:
                 audio_error = "This sloppak has no playable stems."
         else:
@@ -544,31 +521,16 @@ async def highway_ws(websocket: WebSocket, filename: str, arrangement: int = -1,
             # for the credits overlay, so minigames / synthetic highway uses
             # (no manifest) never trigger it.
             "authors": _sanitize_authors(loaded_slop.manifest) if (is_slop and loaded_slop is not None) else [],
-            # Instrument stems ONLY. The pack's complete mixdown (the RESERVED
-            # `full` stem, spec §5.3) is deliberately NOT in this list: consumers
-            # sum `stems` into one mix and render one fader per entry, and the
-            # mixdown is neither a layer nor an instrument — summing it would
-            # double the whole song. It is surfaced separately, below.
             "stems": stems_payload,
-            # The complete mixdown, served by the same /api/sloppak/.../file/
-            # endpoint as the stems. The stems plugin plays this single file
-            # while every stem slider is at unity and crosses to the separated
-            # stems the moment one drops below 100% — separation is lossy, so the
-            # mixdown is strictly better audio when nothing is muted. None when
-            # the pack has no mixdown apart from its stems. The `has_*` flags
-            # mirror the has_drum_tab/has_keys convention so a client can branch
-            # without re-deriving from the URLs.
-            "full_mix_url": full_mix_url,
-            "has_full_mix": bool(full_mix_url),
+            # Full-mix audio (sloppak `original_audio:`) served alongside the
+            # separate `stems`. The stems plugin plays this single file while
+            # every stem slider is at unity and switches to the separate stems
+            # the moment one drops below 100%. None when the pack ships stems
+            # only. `has_*` flags mirror the has_drum_tab/has_keys convention so
+            # a client can branch without re-deriving from the URLs.
+            "original_audio_url": original_audio_url,
+            "has_original_audio": bool(original_audio_url),
             "has_stems": bool(stems_payload),
-            # DEPRECATED aliases of the two keys above, kept so a client built
-            # against the old frame keeps working across one release. They were
-            # named after `original_audio:` — a manifest key this repo invented
-            # and the feedpak spec never had (#933). The key is gone; the mixdown
-            # is a stem. Remove these once the shipped stems plugin reads
-            # `full_mix_url` (#945).
-            "original_audio_url": full_mix_url,
-            "has_original_audio": bool(full_mix_url),
             # Surface a drum_tab presence flag so the visualization picker
             # can auto-activate the drums plugin even when the chosen
             # arrangement isn't named "Drums" (drum_tab.json lives next
@@ -576,15 +538,6 @@ async def highway_ws(websocket: WebSocket, filename: str, arrangement: int = -1,
             "has_drum_tab": bool(
                 is_slop and loaded_slop is not None and loaded_slop.drum_tab is not None
             ),
-            # The song's DRUM PARTS (feedpak 1.17.0 "drums as arrangements"),
-            # primary first — names only; the selected part's payload streams
-            # as the `drum_tab`/`drum_hits` messages below. Always a list
-            # (empty when the pack has no drums, and a single entry for a
-            # legacy one-drum pack), so a part picker can bind unconditionally.
-            "drum_parts": [
-                {"id": p["id"], "name": p["name"]}
-                for p in (loaded_slop.drum_parts or [])
-            ] if is_slop and loaded_slop is not None else [],
             "has_notation": bool(
                 is_slop
                 and loaded_slop is not None
@@ -608,36 +561,18 @@ async def highway_ws(websocket: WebSocket, filename: str, arrangement: int = -1,
         # client-side drums plugin keeps a fallback decoder for them.
         if is_slop and loaded_slop is not None and loaded_slop.drum_tab is not None:
             dt = loaded_slop.drum_tab
-            # Multiple drum parts: `?drum_part=<id>` picks which part's tab
-            # streams; the default (and any unknown id) is the PRIMARY —
-            # exactly the pre-parts behavior, so legacy clients notice nothing.
-            _dt_part_id = None
-            if loaded_slop.drum_parts:
-                _dt_part_id = loaded_slop.drum_parts[0]["id"]
-                if drum_part:
-                    for _p in loaded_slop.drum_parts:
-                        if _p["id"] == drum_part:
-                            dt = _p["drum_tab"]
-                            _dt_part_id = _p["id"]
-                            break
             kit = drums_mod.normalise_kit(dt.get("kit"))
             hits_wire = drums_mod.hits_to_wire(dt.get("hits") or [])
             _dt_name = dt.get("name")
             _dt_name = _dt_name if isinstance(_dt_name, str) and _dt_name else "Drums"
-            _dt_msg = {
-                "type": "drum_tab",
-                "version": int(dt.get("version", drums_mod.SCHEMA_VERSION)),
-                "name": _dt_name,
-                "kit": kit,
-                "total": len(hits_wire),
-            }
-            # Only multi-part packs identify a part on the wire. Legacy packs
-            # synthesize a one-item list internally but keep their old frame.
-            _wire_part_id = _drum_part_id_for_wire(loaded_slop.drum_parts, _dt_part_id)
-            if _wire_part_id is not None:
-                _dt_msg["part_id"] = _wire_part_id
             try:
-                await websocket.send_json(_dt_msg)
+                await websocket.send_json({
+                    "type": "drum_tab",
+                    "version": int(dt.get("version", drums_mod.SCHEMA_VERSION)),
+                    "name": _dt_name,
+                    "kit": kit,
+                    "total": len(hits_wire),
+                })
                 for i in range(0, len(hits_wire), 500):
                     await websocket.send_json({
                         "type": "drum_hits",
@@ -774,29 +709,20 @@ async def highway_ws(websocket: WebSocket, filename: str, arrangement: int = -1,
         # (Arrangement.tones, populated by the converter), so read it straight
         # off `arr` rather than walking for XML that doesn't exist.
         if is_slop:
-            # `sloppak_tone_changes` builds the (base, base_rig, sorted
-            # changes) triple from `Arrangement.tones`, skipping non-string
-            # names, non-finite/non-numeric times, and unusable rig ids —
-            # unit-tested in test_tones.py.
+            # `sloppak_tone_changes` builds the (base, sorted changes) pair
+            # from `Arrangement.tones`, skipping non-string names and
+            # non-finite/non-numeric times — unit-tested in test_tones.py.
             from tones import sloppak_tone_changes
-            base_name, base_rig, tone_changes = sloppak_tone_changes(
-                getattr(arr, "tones", None)
-            )
+            base_name, tone_changes = sloppak_tone_changes(getattr(arr, "tones", None))
             # Send when there's a base tone OR timed changes — a single-tone
             # arrangement has a base but no switches, and the highway should
             # still be able to show the initial tone.
             if tone_changes or base_name:
-                payload = {
+                await websocket.send_json({
                     "type": "tone_changes",
                     "base": base_name,
                     "data": tone_changes,
-                }
-                # `base_rig` is additive (feedpak-spec §6.9) — omitted entirely
-                # when the chart binds no rig, so consumers that predate the rig
-                # model see the exact payload they always did.
-                if base_rig:
-                    payload["base_rig"] = base_rig
-                await websocket.send_json(payload)
+                })
         else:
             xml_paths = sorted(_xml_walk("*.xml"))
 
@@ -1023,7 +949,7 @@ async def highway_ws(websocket: WebSocket, filename: str, arrangement: int = -1,
         # base[string] + offset + capo + fret (matches the tuner / open-string
         # labels). arrangement_string_count is O(notes), so compute once here.
         _base = base_open_string_midis(
-            arrangement_string_count(arr), arrangement_is_bass(arr))
+            arrangement_string_count(arr), "bass" in (arr.name or "").lower())
         _capo = int(getattr(arr, "capo", 0) or 0)
 
         def _fill_scale_degree(wire: dict, n, t: float) -> None:

lib/routers/ws_sync.py

@@ -1,140 +0,0 @@
-"""Session-sync relay WebSocket — /ws/sync/{session_id} (feedBack#1030).
-
-A deliberately dumb fan-out room: a JSON text frame received from one client
-is forwarded verbatim to every OTHER client connected to the same session id.
-The server interprets nothing beyond the limits below — message schemas are
-owned entirely by consumers. First consumer: splitscreen's LAN follower mode
-(feedBack-plugin-splitscreen#21), which relays playhead/playstate/song-change
-frames from a host window to view-only followers on other LAN devices.
-
-Design points (full spec in the issue):
-
-- Rooms are created on first join and garbage-collected when the last socket
-  leaves. No history, no replay, no persistence — a late joiner simply waits
-  for the next frame. Consumers that need state on join re-send it themselves
-  (splitscreen answers every follower ``hello`` with a fresh ``config``).
-- That statelessness is what makes consumer crash-recovery work: a host that
-  relaunches and rejoins the same session id resumes publishing to its
-  reconnecting subscribers with no server-side coordination, and an idle room
-  is indistinguishable from a nonexistent one.
-- ``session_id`` is client-generated and opaque (``[A-Za-z0-9_-]{4,64}``);
-  consumers pick their own id policy (splitscreen uses a short typeable,
-  persistent room key).
-- DoS hygiene for a port that may be LAN-exposed: frame-size cap, per-room and
-  total-room caps, and a per-socket inbound token-bucket rate cap. Over-limit
-  sockets are closed with a policy code; the room carries on. A peer that dies
-  mid-fan-out is dropped without wedging delivery to the rest.
-"""
-
-import asyncio
-import logging
-import re
-import time
-
-from fastapi import APIRouter, WebSocket
-
-log = logging.getLogger("feedBack.server")
-
-router = APIRouter()
-
-_SESSION_ID_RE = re.compile(r"^[A-Za-z0-9_-]{4,64}$")
-
-# Limits. Sized generously above the first consumer's needs (splitscreen
-# publishes time frames at ~15-20 Hz to a handful of viewers) while bounding
-# what an open LAN port can be made to do. All module-level so tests (and a
-# desperate operator) can override them.
-MAX_FRAME_BYTES = 16 * 1024
-MAX_CLIENTS_PER_ROOM = 16
-MAX_ROOMS = 32
-RATE_MSGS_PER_SEC = 120.0  # sustained inbound frames per socket
-RATE_BURST = 240.0  # token-bucket burst headroom
-# A peer that stops draining its socket would leave send_text() pending
-# forever — and since publishers await the fan-out gather, one stalled peer
-# would stall every publisher's receive loop behind it. Bounding the send
-# turns the stall into an eviction through the normal failed-send drop path.
-SEND_TIMEOUT_SECONDS = 5.0
-
-# RFC 6455 close codes.
-_WS_UNSUPPORTED_DATA = 1003  # binary frame on a text-only relay
-_WS_POLICY_VIOLATION = 1008  # invalid session id / rate cap exceeded
-_WS_MSG_TOO_BIG = 1009
-_WS_TRY_AGAIN_LATER = 1013  # room or server at capacity
-
-# session_id → {socket: per-socket send lock}. The lock serializes concurrent
-# fan-out sends to the same peer (two publishers relaying at once must not
-# interleave writes on a third socket's transport).
-_rooms: dict[str, dict[WebSocket, asyncio.Lock]] = {}
-
-
-async def _send_locked(peer: WebSocket, lock: asyncio.Lock, text: str) -> None:
-    async with lock:
-        await asyncio.wait_for(peer.send_text(text), timeout=SEND_TIMEOUT_SECONDS)
-
-
-@router.websocket("/ws/sync/{session_id}")
-async def sync_ws(websocket: WebSocket, session_id: str):
-    """Join the fan-out room *session_id*; relay every inbound text frame."""
-    await websocket.accept()
-
-    if not _SESSION_ID_RE.fullmatch(session_id):
-        await websocket.close(code=_WS_POLICY_VIOLATION, reason="invalid session id")
-        return
-
-    # Capacity checks and insertion run with no await between them, so
-    # concurrent joiners on the event loop can't race past the caps.
-    room = _rooms.get(session_id)
-    if room is None:
-        if len(_rooms) >= MAX_ROOMS:
-            await websocket.close(code=_WS_TRY_AGAIN_LATER, reason="too many active sessions")
-            return
-        room = _rooms[session_id] = {}
-        log.debug("ws_sync: room %s created", session_id)
-    elif len(room) >= MAX_CLIENTS_PER_ROOM:
-        await websocket.close(code=_WS_TRY_AGAIN_LATER, reason="session full")
-        return
-    room[websocket] = asyncio.Lock()
-
-    tokens = RATE_BURST
-    last_refill = time.monotonic()
-
-    try:
-        while True:
-            message = await websocket.receive()
-            if message["type"] == "websocket.disconnect":
-                break
-            text = message.get("text")
-            if text is None:
-                await websocket.close(code=_WS_UNSUPPORTED_DATA, reason="text frames only")
-                break
-            if len(text.encode("utf-8", errors="ignore")) > MAX_FRAME_BYTES:
-                await websocket.close(code=_WS_MSG_TOO_BIG, reason="frame too large")
-                break
-
-            now = time.monotonic()
-            tokens = min(RATE_BURST, tokens + (now - last_refill) * RATE_MSGS_PER_SEC)
-            last_refill = now
-            tokens -= 1.0
-            if tokens < 0:
-                await websocket.close(code=_WS_POLICY_VIOLATION, reason="rate cap exceeded")
-                break
-
-            peers = [(ws, lock) for ws, lock in room.items() if ws is not websocket]
-            if not peers:
-                continue
-            results = await asyncio.gather(
-                *(_send_locked(ws, lock, text) for ws, lock in peers),
-                return_exceptions=True,
-            )
-            # A peer that failed mid-send is dropped from the room here; its
-            # own handler finishes cleanup (the finally below) when its
-            # receive loop observes the disconnect.
-            for (peer, _lock), result in zip(peers, results):
-                if isinstance(result, Exception):
-                    room.pop(peer, None)
-    finally:
-        room.pop(websocket, None)
-        # Guard against deleting a NEW room another joiner created after this
-        # one emptied (only possible for a dict that is no longer ours).
-        if not room and _rooms.get(session_id) is room:
-            del _rooms[session_id]
-            log.debug("ws_sync: room %s closed", session_id)

lib/safepath.py

@@ -4,34 +4,9 @@ under a server-owned root.
 
 from __future__ import annotations
 
-from functools import lru_cache
 from pathlib import Path
 
 
-@lru_cache(maxsize=16)
-def resolved_root(root: Path) -> Path:
-    """Canonical (link-resolved) form of a server-owned root directory.
-
-    ``Path.resolve()`` is a filesystem call: it lstats every component of the
-    path. The roots we join against — the DLC library, a plugin's asset dir —
-    are fixed for the life of the process, but the containment helpers below
-    (and ``dlc_paths._resolve_dlc_path``) were re-resolving them on EVERY call,
-    and those are called once per song, per art fetch, per scanned row.
-
-    On a real 50,944-song library that cost ~23,500 stat/lstat calls per second,
-    pinning a core. It is brutal when the library lives on a FUSE mount
-    (NTFS-3G, SMB, sshfs), where every stat is a userspace round trip: the same
-    three parent directories were being walked over and over.
-
-    Cached because a root is a constant here, not because resolution is cheap.
-    Consequence: if a root's symlink/junction is re-pointed at a NEW target
-    while the server is running, the old target stays in effect until restart.
-    That is fine for a library path fixed at startup, and the cache is keyed on
-    the Path, so switching to a different library dir is a different key.
-    """
-    return root.resolve()
-
-
 def safe_join(root: Path, name: str) -> Path | None:
     """Resolve ``name`` under ``root`` and return the resolved Path, or
     ``None`` if it would escape ``root`` or is unrepresentable.
@@ -60,12 +35,9 @@ def safe_join(root: Path, name: str) -> Path | None:
         return None
     safe = name.replace("\\", "/")
     try:
-        # The ROOT is a constant — resolve it once (see resolved_root). The
-        # CANDIDATE must still be resolved on every call: following its symlinks
-        # is exactly the zip-slip / traversal defence, so it is never cached.
-        root_res = resolved_root(root)
-        candidate = (root_res / safe).resolve()
-        if not candidate.is_relative_to(root_res):
+        root_resolved = root.resolve()
+        candidate = (root_resolved / safe).resolve()
+        if not candidate.is_relative_to(root_resolved):
             return None
     except (ValueError, OSError):
         return None

lib/scan.py

@@ -51,120 +51,6 @@ from scan_worker import _relpath, _scan_one
 
 log = logging.getLogger("feedBack.scan")
 
-import json
-
-
-# ── Directory-signature fast path ─────────────────────────────────────────────
-#
-# A startup scan globs the whole library twice (*.feedpak, *.wem) and stats every
-# file to detect what changed. On a 50k-song library that lives on a slow mount
-# (an NTFS-3G FUSE volume here) it is ~100k filesystem round trips every launch —
-# the "big drive churns on every startup" report.
-#
-# But adds / removes / renames of songs all bump the mtime of the DIRECTORY that
-# holds them (verified on the target NTFS-3G mount), and so does the addition of
-# a subdirectory (a new entry in its parent). So after a scan we record every
-# library directory and its mtime; on the next scan we re-stat ONLY those
-# directories (a handful, vs 100k file ops). If none changed, the file set is
-# unchanged and the whole listing/stat pass is skipped.
-#
-# The one thing this cannot see is a file edited IN PLACE under the same name —
-# that bumps the file's mtime but not its directory's. That is rare for a song
-# library (you add and remove packs, you don't rewrite them under the same name),
-# and the manual Refresh forces a full scan (force=True) for exactly that case.
-def _dir_signature_file() -> Path:
-    return appstate.config_dir / "scan_dir_signature.json"
-
-
-def _load_dir_signature() -> dict | None:
-    try:
-        data = json.loads(_dir_signature_file().read_text(encoding="utf-8"))
-        if isinstance(data, dict) and isinstance(data.get("dirs"), dict):
-            return data
-    except (OSError, ValueError):
-        pass
-    return None
-
-
-def _save_dir_signature(dlc: Path, dirs: dict[str, int]) -> None:
-    # Keyed by the DLC path so switching libraries never matches a stale
-    # signature. Best-effort: a failed write just means the next scan is a full
-    # one, never a wrong one.
-    try:
-        _dir_signature_file().write_text(
-            json.dumps({"dlc": str(dlc), "dirs": dirs}), encoding="utf-8")
-    except OSError as e:
-        log.debug("scan: could not persist dir signature: %s", e)
-
-
-def _library_dirs(all_songs, dlc: Path) -> set[str]:
-    """Every directory whose mtime reflects an add/remove of a library song:
-    each song's containing directory and all of its ancestors up to the DLC
-    root (the root itself always included, as "."). Derived from the already-
-    listed songs — no extra filesystem walk. The builtin carve-outs
-    (tutorials-builtin / minigames-builtin) are absent because the caller
-    already excluded them from `all_songs`, so a minigame writing a drill there
-    never invalidates the fast path.
-
-    Directory-form songs (loose-song folders, directory sloppak bundles) also
-    record their OWN directory: a file added/removed/replaced INSIDE the folder
-    bumps that folder's mtime but not its parent's, so tracking only the parent
-    would miss an in-place change to such a song. File-form sloppaks (a single
-    .feedpak zip) aren't dirs, so they add nothing here — the flat file library
-    stays at a handful of dir stats."""
-    rels = {"."}
-    for f in all_songs:
-        rel = Path(_relpath(f, dlc))
-        if f.is_dir():
-            rels.add(rel.as_posix())
-        parent = rel.parent
-        rels.add(parent.as_posix())
-        for anc in parent.parents:
-            rels.add(anc.as_posix())
-    return rels
-
-
-def _has_unextracted_columns() -> bool:
-    """True while any `songs` row still carries NULL in a column added by an
-    additive migration — i.e. metadata the current extractor would fill but
-    that no existing row has yet (currently `bass_tuning_name`).
-
-    The tree-signature fast path only asks "did the file set change"; on a
-    settled library the answer is no forever, so a schema addition would never
-    reach extraction. This one-row probe forces the full pass exactly until the
-    backfill completes — `put()` writes '' rather than NULL, so it self-clears
-    after the rescan instead of disabling the fast path permanently."""
-    try:
-        from metadata_db import MetadataDB
-        cond = " OR ".join(f"{c} IS NULL" for c in MetadataDB._EXTRACTION_MARKER_COLS)
-        row = appstate.meta_db.conn.execute(
-            f"SELECT 1 FROM songs WHERE {cond} LIMIT 1").fetchone()
-    except Exception as e:
-        # A probe failure must not take the scan down; falling back to the fast
-        # path costs at most a delayed backfill.
-        log.debug("scan: unextracted-column probe failed: %s", e)
-        return False
-    return row is not None
-
-
-def _record_dir_signature(all_songs, dlc: Path) -> None:
-    sig = _stat_dirs(dlc, _library_dirs(all_songs, dlc))
-    if sig is not None:   # a dir vanished mid-scan → skip; next scan is full
-        _save_dir_signature(dlc, sig)
-
-
-def _stat_dirs(dlc: Path, rels) -> dict[str, int] | None:
-    """{reldir: mtime_ns} for the given library dirs, or None if any is gone or
-    unreadable — a vanished recorded dir means the tree changed, so fail to a
-    full scan rather than a false match."""
-    out: dict[str, int] = {}
-    for rel in rels:
-        try:
-            out[rel] = (dlc if rel == "." else dlc / rel).stat().st_mtime_ns
-        except OSError:
-            return None
-    return out
-
 
 _SCAN_STATUS_INIT = {"running": False, "stage": "idle", "total": 0, "done": 0, "current": "", "error": None, "is_first_scan": False, "added": 0, "removed": 0}
 
@@ -213,12 +99,9 @@ def _make_scan_executor():
     )
 
 
-def background_scan(force: bool = False):
+def background_scan():
     """Scan the library and cache song metadata on startup. Uses a process pool to bypass the GIL for CPU-bound metadata parsing.
 
-    `force` skips the directory-signature fast path and always does the full
-    listing/stat pass — the manual Refresh sets it (see _dir_signature_file).
-
     Never sets `_scan_status["running"] = False` — ownership of that flag
     lives in `_scan_runner` so a `kick_scan()` racing this function's
     terminal write cannot observe a stale False and start a second runner.
@@ -238,22 +121,6 @@ def background_scan(force: bool = False):
     builtin_content.seed_builtin_diagnostic_sloppaks(appstate.server_root, dlc)
     builtin_content.seed_builtin_starter_content(appstate.server_root, dlc)
 
-    # Fast path: if every library directory recorded by the last scan still has
-    # the same mtime, nothing was added, removed, or renamed, so the whole
-    # glob-and-stat pass below can be skipped (see the signature comment above).
-    # `force` (manual Refresh) always does the full pass. Seeding above is
-    # idempotent — it only writes when a builtin is missing — so it does not
-    # perturb the mtimes on a settled library.
-    if not force and not _has_unextracted_columns():
-        stored = _load_dir_signature()
-        if stored is not None and stored.get("dlc") == str(dlc):
-            current = _stat_dirs(dlc, stored["dirs"].keys())
-            if current is not None and current == stored["dirs"]:
-                _scan_status = {**_SCAN_STATUS_INIT, "running": True, "stage": "complete"}
-                log.info("Scan: library tree unchanged (%d dirs) — skipped the full listing/stat pass",
-                         len(current))
-                return
-
     # Listing can fail on macOS without Full Disk Access, or on Docker if the
     # path isn't shared. Report the failure explicitly rather than silently
     # appearing to scan nothing.
@@ -342,15 +209,6 @@ def background_scan(force: bool = False):
             cached = None
         if not cached:
             to_scan.append((f, mtime, size, dlc))
-        elif any(cached.get(c) is None for c in appstate.meta_db._EXTRACTION_MARKER_COLS):
-            # Row predates one of the per-perspective tuning columns (NULL
-            # from the additive migration), so that perspective's tuning was
-            # never extracted for it. Without this
-            # re-queue an existing library would keep every bass column empty
-            # forever — mtime/size still match, so nothing else would ever
-            # bring the row back through extraction. Converges: put() always
-            # writes '' (never NULL), so a rescanned row is never re-queued.
-            to_scan.append((f, mtime, size, dlc))
         elif cached.get("arrangements") and any(
             "smart_name" not in a for a in cached["arrangements"]
         ):
@@ -365,9 +223,6 @@ def background_scan(force: bool = False):
             to_scan.append((f, mtime, size, dlc))
 
     if not to_scan:
-        # Full pass completed with the DB already up to date — record the tree
-        # signature so the next startup can take the fast path.
-        _record_dir_signature(all_songs, dlc)
         _scan_status = {**_SCAN_STATUS_INIT, "running": True, "stage": "complete", "added": added, "removed": removed}
         log.info("Scan: nothing new to scan (%d songs, all cached)", len(all_songs))
         return
@@ -392,9 +247,6 @@ def background_scan(force: bool = False):
             _scan_status["done"] += 1
             _scan_status["current"] = fname
 
-    # Record the tree signature after a completed full pass so the next startup
-    # can skip it when nothing has changed.
-    _record_dir_signature(all_songs, dlc)
     log.info("Scan complete: %d songs cached", len(to_scan))
     _scan_status = {**_SCAN_STATUS_INIT, "running": True, "stage": "complete", "added": added, "removed": removed}
 
@@ -403,9 +255,6 @@ _scan_kick_lock = threading.Lock()
 
 
 _scan_rescan_pending = False
-# Set by kick_scan(force=True); consumed by _scan_runner for the next pass so a
-# manual Refresh bypasses the directory-signature fast path.
-_scan_force_next = False
 
 
 # Handles to the running scan / enrichment worker threads. Both use the shared
@@ -416,15 +265,9 @@ _scan_force_next = False
 _scan_thread: threading.Thread | None = None
 
 
-def kick_scan(force: bool = False) -> bool:
+def kick_scan() -> bool:
     """Request a library rescan, single-flight + coalescing.
 
-    `force` skips the directory-signature fast path for the resulting pass (the
-    manual Refresh uses it so an in-place same-name edit — the one thing the
-    fast path can't see — is always picked up). A forced request that coalesces
-    onto a running or queued scan keeps the force intent: the pass is forced if
-    ANY pending request asked for it.
-
     Returns True if a new scan thread was started, False if one was already
     running. In the latter case a follow-up pass is queued and runs as soon
     as the current scan finishes so files landing mid-scan (e.g. an upload
@@ -432,10 +275,8 @@ def kick_scan(force: bool = False) -> bool:
     until the next periodic pass. Multiple late-arriving requests coalesce
     into a single follow-up.
     """
-    global _scan_rescan_pending, _scan_thread, _scan_force_next
+    global _scan_rescan_pending, _scan_thread
     with _scan_kick_lock:
-        if force:
-            _scan_force_next = True
         if _scan_status["running"]:
             _scan_rescan_pending = True
             return False
@@ -449,15 +290,10 @@ def kick_scan(force: bool = False) -> bool:
 
 def _scan_runner():
     """Run _background_scan, then re-run if requests arrived mid-scan."""
-    global _scan_rescan_pending, _scan_force_next
+    global _scan_rescan_pending
     while True:
-        # Consume the force flag for THIS pass; a forced request queued mid-scan
-        # sets it again for the follow-up.
-        with _scan_kick_lock:
-            forced = _scan_force_next
-            _scan_force_next = False
         try:
-            background_scan(force=forced)
+            background_scan()
         except Exception:
             log.exception("background scan failed unexpectedly")
 

lib/scan_worker.py

@@ -27,11 +27,7 @@ import logging
 from pathlib import Path
 
 from song import compute_smart_names
-from tunings import (
-    DEFAULT_PERSPECTIVE, PERSPECTIVES, ROLE_PERSPECTIVES, normalize_offsets,
-    perspective_low_pitch, perspective_tuning_key, perspective_tuning_name,
-    tuning_name,
-)
+from tunings import tuning_name
 import sloppak as sloppak_mod
 import loosefolder as loosefolder_mod
 
@@ -47,56 +43,6 @@ def _relpath(f: Path, dlc: Path) -> str:
         return f.name
 
 
-def _apply_role_tunings(meta: dict) -> None:
-    """Derive each ROLE perspective's tuning columns from the raw offsets the
-    extractor emitted (currently bass + rhythm; guitar-lead reads the
-    song-level columns the scanner has always written).
-
-    The domain rules live in `tunings` (see the PERSPECTIVES table and the
-    block above it for the evidence behind each):
-
-    1. NORMALIZE FIRST. Stored bass arrays are commonly six elements whose
-       last two slots are padding, so bass truncates to four strings before
-       anything looks at them — padding must never reach the namer or the
-       grouping key. Guitar does NOT truncate (a 7-string array is real).
-    2. Refuse to name data the perspective distrusts (bass up-tuning), so the
-       library can't send a player off to a tuning nobody plays.
-    3. Group on CANONICAL PITCHES, not the raw offsets string — the same
-       physical tuning serialized two ways must be ONE facet entry.
-
-    A song with no arrangement in that role gets EMPTY strings / 0, not NULL:
-    '' is the indexed "we looked, there is no such chart" state the library's
-    fallback keys on, while NULL means "never extracted" and re-scans.
-    """
-    for persp in ROLE_PERSPECTIVES:
-        raw = meta.pop(f"{persp.role}_tuning_offsets", None)
-        offsets = normalize_offsets(raw, persp)
-        if offsets is None:
-            meta[persp.column("name")] = ""
-            meta[persp.column("sort_key")] = 0
-            meta[persp.column("offsets")] = ""
-            meta[persp.column("key")] = ""
-            meta[persp.column("low_pitch")] = None
-            continue
-        meta[persp.column("name")] = perspective_tuning_name(offsets, persp)
-        meta[persp.column("sort_key")] = sum(offsets)
-        # The NORMALIZED offsets are what we store: padding is not data, and a
-        # client rendering target notes must not print phantom strings.
-        meta[persp.column("offsets")] = " ".join(str(o) for o in offsets)
-        meta[persp.column("key")] = perspective_tuning_key(offsets, persp)
-        meta[persp.column("low_pitch")] = perspective_low_pitch(offsets, persp)
-
-
-def _apply_song_low_pitch(meta: dict, offsets: list[int]) -> None:
-    """Lowest open-string pitch of the SONG-level (guitar-lead) tuning, for
-    the "playable without retuning" comparison. Indexed here, on the existing
-    manifest-only pass — never by reopening chart JSON."""
-    persp = PERSPECTIVES[DEFAULT_PERSPECTIVE]
-    norm = normalize_offsets(offsets, persp)
-    meta["tuning_low_pitch"] = (
-        perspective_low_pitch(norm, persp) if norm is not None else None)
-
-
 def _extract_meta_sloppak(path: Path) -> dict:
     """Extract metadata for a sloppak (file or directory)."""
     meta = sloppak_mod.extract_meta(path)
@@ -106,8 +52,6 @@ def _extract_meta_sloppak(path: Path) -> dict:
     meta["tuning_name"] = name
     meta["tuning_sort_key"] = sum(offsets)
     meta["tuning_offsets"] = " ".join(str(o) for o in offsets)
-    _apply_song_low_pitch(meta, offsets)
-    _apply_role_tunings(meta)
     meta["format"] = "sloppak"
     # `extract_meta` already populates `stem_ids` (feedBack#129);
     # default to empty for older callers / mocks.
@@ -142,8 +86,6 @@ def _extract_meta_loosefolder(path: Path, dlc_root: Path | None) -> dict:
     meta["tuning_name"] = name
     meta["tuning_sort_key"] = sum(offsets)
     meta["tuning_offsets"] = " ".join(str(o) for o in offsets)
-    _apply_song_low_pitch(meta, offsets)
-    _apply_role_tunings(meta)
     meta["format"] = "loose"
     meta.setdefault("stem_ids", [])
     # The library helper exposes absolute filesystem paths for audio/art

lib/song.py

@@ -56,13 +56,6 @@ class Note:
     strum_group: int = -1
     scale_degree: int = -1
     ignore: bool = False
-    # Keys hand assignment ('lh'/'rh', None = unassigned) — authored per-note,
-    # e.g. from a MusicXML grand staff import in the editor. Lets the notation
-    # hand split and hands-separate practice honor the author instead of the
-    # mean-pitch heuristic. Distinct from `right_hand` (the bass plucking
-    # finger); spelled-out `hand` on the wire because `rh` is taken.
-    # Default-omitted on the wire; older readers ignore it.
-    hand: str | None = None
 
 
 @dataclass
@@ -182,12 +175,6 @@ class Arrangement:
     # `base`/`changes` drive the highway tone-change markers; `definitions`
     # feed the Tones plugin gear panel.
     tones: dict | None = None
-    # Editor-authored instrument type (feedpak-spec §5.2 / editor PR #335):
-    # "bass" | "guitar" | "piano" | "keys" | "drums" | "". First-class DATA that
-    # lets a user author an instrument on an arrangement whose NAME doesn't say
-    # so. Lifted from the sloppak manifest entry by sloppak.load_song(); "" for
-    # archive/loose sources, which instead carry the path_* flags below.
-    type: str = ""
     # arrangement XML <arrangementProperties> flags for smart naming (feedBack feat/arrangement).
     # Populated from the XML; default False/0 for sloppak / GP-imported sources.
     path_lead: bool = False
@@ -285,10 +272,6 @@ def note_to_wire(n: Note) -> dict:
         out["ch"] = n.strum_group
     if n.scale_degree != -1:
         out["sd"] = n.scale_degree
-    # Keys hand assignment — default-omitted; validated on emit so a
-    # directly-constructed Note can't put junk ('LH', True, …) on the wire.
-    if n.hand in ("lh", "rh"):
-        out["hand"] = n.hand
     return out
 
 
@@ -509,8 +492,8 @@ def note_pitch_midi(arr: "Arrangement", note: "Note") -> int | None:
     O(notes) via ``arrangement_string_count`` — for a whole arrangement, hoist
     the base with :func:`base_open_string_midis` and call :func:`pitch_from_base`
     per note instead."""
-    base = base_open_string_midis(arrangement_string_count(arr),
-                                  arrangement_is_bass(arr))
+    is_bass = "bass" in (arr.name or "").lower()
+    base = base_open_string_midis(arrangement_string_count(arr), is_bass)
     return pitch_from_base(base, int(getattr(arr, "capo", 0) or 0),
                            arr.tuning or [], note.string, note.fret)
 
@@ -549,10 +532,6 @@ def note_from_wire(d: dict, time: float | None = None) -> Note:
         strum_group=_wire_int_optional(d.get("ch"), -1),
         scale_degree=_wire_int_optional(d.get("sd"), -1),
         ignore=bool(d.get("ig", False)),
-        # Keys hand assignment — strict enum decode: anything but 'lh'/'rh'
-        # (junk, wrong case, bools) falls back to unassigned rather than
-        # poisoning downstream hand-split/practice logic.
-        hand=d.get("hand") if d.get("hand") in ("lh", "rh") else None,
     )
 
 
@@ -639,23 +618,6 @@ def phrase_from_wire(d: dict) -> Phrase:
     )
 
 
-def arrangement_is_bass(arr: Arrangement) -> bool:
-    """Whether ``arr`` is a bass, most-authoritative signal first: an
-    editor-authored ``type == "bass"`` (feedpak-spec §5.2 / editor PR #335,
-    lifted onto sloppaks by :func:`sloppak.load_song`), then the archive
-    ``path_bass`` <arrangementProperties> flag, then the legacy "bass"
-    case-insensitive substring in the name. Single source of the bass decision
-    so string-count derivation and the open-string pitch base (via
-    :func:`base_open_string_midis`) agree — a bass authored on an arrangement
-    whose NAME doesn't say "bass" must get both 4 lanes AND the bass MIDI base,
-    not 4 lanes on a guitar octave."""
-    return (
-        (arr.type or "").strip().lower() == "bass"
-        or bool(arr.path_bass)
-        or "bass" in (arr.name or "").lower()
-    )
-
-
 def arrangement_string_count(arr: Arrangement) -> int:
     """Derive the active arrangement's string count.
 
@@ -673,17 +635,10 @@ def arrangement_string_count(arr: Arrangement) -> int:
        But this is a LOWER BOUND only — a 6-string lead chart that
        never plays string 5 reports 5, undercounting by 1.
 
-    2. **Instrument-type fallback.** An arrangement whose authoritative
-       instrument signal says bass defaults to 4; everything else
-       defaults to 6. This catches the partial-string-usage case where
-       notes don't span all the instrument's strings. The bass signal is
-       any of: an editor-authored ``type == "bass"`` (feedpak-spec §5.2 /
-       editor PR #335 — lifted onto sloppaks by ``sloppak.load_song``),
-       the ``path_bass`` <arrangementProperties> flag (archive/DLC
-       sources), or the legacy "bass" case-insensitive substring in the
-       name. Trusting ``type``/``path_bass`` closes the gap where a user
-       authors a bass instrument on an arrangement whose NAME doesn't say
-       "bass" (the editor lays out 4 lanes; core must agree).
+    2. **Name-based fallback.** Arrangements named "Bass" (case-
+       insensitive substring match) default to 4; everything else
+       defaults to 6. This catches the partial-string-usage case
+       where notes don't span all the instrument's strings.
 
     A third signal — ``len(arr.tuning)`` when it isn't the arrangement XML
     padded value of 6 — folds in for sloppak / GP-imported sources
@@ -714,10 +669,6 @@ def arrangement_string_count(arr: Arrangement) -> int:
       max(0, 4, 0) = 4
     * Empty arrangement named "Lead" (tuning len 6) →
       max(0, 6, 0) = 6
-    * Editor-authored bass named "Low End" (type "bass", tuning len 6,
-      notes 0..3) → name_based=4 → max(4, 4, 0) = 4
-    * DLC bass named "Low End" (pathBass flag set, tuning len 6, notes
-      0..3) → name_based=4 → max(4, 4, 0) = 4
 
     Topkoa's issue argues plugins shouldn't do arrangement-name
     matching; server-side fallback IS the right place for it
@@ -733,9 +684,7 @@ def arrangement_string_count(arr: Arrangement) -> int:
             if cn.string > max_s:
                 max_s = cn.string
     notes_count = max_s + 1 if max_s >= 0 else 0
-    # Bass signal (type / pathBass / name substring) — see arrangement_is_bass.
-    # Any one being bass pulls the fallback to 4.
-    name_based = 4 if arrangement_is_bass(arr) else 6
+    name_based = 4 if "bass" in arr.name.lower() else 6
     # Tuning-length signal — only trustworthy when NOT the arrangement XML
     # padded value of 6. Length 4/5 indicates explicit bass / 5-string
     # bass; length 7/8 indicates an extended-range guitar from GP.

lib/tones.py

@@ -32,29 +32,20 @@ def tokens(s: str) -> set[str]:
     return {t for t in re.split(r"[^a-z0-9]+", (s or "").lower()) if t}
 
 
-def sloppak_tone_changes(arr_tones) -> tuple[str, str, list[dict]]:
+def sloppak_tone_changes(arr_tones) -> tuple[str, list[dict]]:
     """Build the highway tone-change payload from an arrangement's tone block.
 
     Given ``Arrangement.tones`` (the dict embedded in the sloppak, or ``None``),
-    returns ``(base, base_rig, changes)`` where ``base`` is the initial tone
-    name, ``base_rig`` is the ``rigs.json`` rig id bound to it (feedpak-spec
-    §6.9; ``""`` when absent), and ``changes`` is a time-sorted
-    ``[{"t", "name", "rig"?}]`` list. Non-string names, non-dict entries, and
-    non-numeric / non-finite times are skipped — a hand-edited or third-party
-    sloppak must not crash the highway WebSocket or emit NaN/inf (which the
-    client's ``JSON.parse`` rejects).
-
-    ``rig`` / ``base_rig`` are carried through but NOT resolved against
-    ``rigs.json`` here: this builder only preserves the binding the chart
-    declared. Realization selection and the ``intent.gm`` fallback (§7.9) belong
-    to the consumer that actually voices the part.
+    returns ``(base, changes)`` where ``base`` is the initial tone name and
+    ``changes`` is a time-sorted ``[{"t", "name"}]`` list. Non-string names,
+    non-dict entries, and non-numeric / non-finite times are skipped — a
+    hand-edited or third-party sloppak must not crash the highway WebSocket
+    or emit NaN/inf (which the client's ``JSON.parse`` rejects).
     """
     if not isinstance(arr_tones, dict):
-        return "", "", []
+        return "", []
     base_val = arr_tones.get("base", "")
     base = base_val.strip() if isinstance(base_val, str) else ""
-    base_rig_val = arr_tones.get("base_rig", "")
-    base_rig = base_rig_val.strip() if isinstance(base_rig_val, str) else ""
 
     changes: list[dict] = []
     raw_changes = arr_tones.get("changes")
@@ -74,13 +65,6 @@ def sloppak_tone_changes(arr_tones) -> tuple[str, str, list[dict]]:
             continue
         if not math.isfinite(t):
             continue
-        change = {"t": round(t, 3), "name": name}
-        # ponytail: `rig` only when it's a usable id — a non-string or blank
-        # value is dropped rather than forwarded, so a consumer can treat
-        # presence of the key as "this change binds a rig".
-        rig = c.get("rig")
-        if isinstance(rig, str) and rig.strip():
-            change["rig"] = rig.strip()
-        changes.append(change)
+        changes.append({"t": round(t, 3), "name": name})
     changes.sort(key=lambda x: x["t"])
-    return base, base_rig, changes
+    return base, changes

lib/tunings.py

@@ -101,16 +101,14 @@ def open_midis_to_freqs(midis: list[int], reference_pitch: float = DEFAULT_REFER
 def freqs_to_midis(freqs: list[float], reference_pitch: float = DEFAULT_REFERENCE_PITCH) -> list[int] | None:
     """Return absolute open-string MIDI notes for frequencies at the supplied
     A4 reference — the inverse of open_midis_to_freqs. None if any entry is
-    non-numeric, non-finite, or non-positive (a provider could hand us
-    anything; NaN/Infinity would otherwise raise inside int(round(...)) and
-    500 the /api/tunings endpoint)."""
+    non-numeric or non-positive (a provider could hand us anything)."""
     out: list[int] = []
     for f in freqs:
         try:
             f = float(f)
         except (TypeError, ValueError):
             return None
-        if not math.isfinite(f) or f <= 0:
+        if f <= 0:
             return None
         out.append(int(round(69 + 12 * math.log2(f / reference_pitch))))
     return out
@@ -416,258 +414,27 @@ def apply_flat_instrument_patch_to_profiles(cfg: dict, updates: dict) -> dict:
     })
     return out
 
-# ── Bass tuning normalization (library indexing) ─────────────────────────────
-#
-# Bass charts in the wild store SIX-element tuning arrays even when the chart is
-# a 4-string part: slots 4-5 are PADDING. Confirmed by inspecting the charts
-# themselves — across every pack whose bass and guitar tunings diverge, no bass
-# note ever references string index 4 or 5 (the deepest reach is index 3).
-#
-# The feedpak spec carries NO string-count field (manifest `arrangement.tuning`
-# is an untyped integer array, `minItems: 1`), and counting strings for real
-# would mean parsing the 600KB-1.2MB arrangement JSON of every song on the
-# manifest-only fast scan path — unacceptable for scan time. So we DEFAULT BASS
-# TO 4 STRINGS and truncate.
-#
-# KNOWN GAP (deliberate, documented): a genuine 5- or 6-string bass is
-# truncated to its low four. That is harmless for the overwhelmingly common
-# case — a 5-string in standard truncates to [0,0,0,0] and still names
-# "Standard" — and only misreads a tuning that DIFFERS at string 4 or above.
-# Revisit if the spec ever gains a string count.
-BASS_DEFAULT_STRING_COUNT = 4
-
-# Bassists tune DOWN, essentially never up: a whole-instrument up-tune fights
-# string tension. Anything above +1 semitone across the board is data we do not
-# trust, not a tuning a human plays (the real-world example that motivated this
-# is a bass array of [5,5,5,5,4,4] — "all four strings up a perfect fourth" —
-# on a song whose guitar chart is dead standard and whose own note content is
-# consistent with standard tuning; the offsets were almost certainly computed
-# against a 6-string-bass reference with an uninitialised tail).
-#
-# Such a tuning MUST NOT be named: printing "A Standard" would send a player
-# off to retune to something nobody plays. It degrades to the custom path,
-# where it stays visible and distinct but makes no pitch claim.
-BASS_MAX_PLAUSIBLE_OFFSET = 1
-
-
-# ── Tuning PERSPECTIVES ──────────────────────────────────────────────────────
-#
-# The library's tuning facet/filter/sort always answers for ONE arrangement
-# role. There are three, matching `active_instrument_profile`:
-#
-#   guitar-lead    the song-level (guitar-first) tuning — the historical
-#                  default. Its columns are the original unprefixed
-#                  `tuning_*` family, so today's behaviour is byte-identical.
-#   guitar-rhythm  the RHYTHM chart's own tuning. Lead and rhythm charts can
-#                  disagree (the same bug a bassist hit, inside guitar).
-#   bass           the BASS chart's own tuning.
-#
-# One table drives extraction, the derived columns, the SQL, and the labels —
-# rather than three near-identical column families maintained in parallel.
-class TuningPerspective:
-    __slots__ = ("id", "role", "instrument", "string_count", "column_prefix",
-                 "truncate", "guard_up_tuning", "label")
-
-    def __init__(self, id, role, instrument, string_count, column_prefix,
-                 truncate, guard_up_tuning, label):
-        self.id = id
-        self.role = role                    # arrangement name to look for ('' = song-level)
-        self.instrument = instrument
-        self.string_count = string_count
-        self.column_prefix = column_prefix  # '' | 'rhythm_' | 'bass_'
-        self.truncate = truncate
-        self.guard_up_tuning = guard_up_tuning
-        self.label = label
-
-    @property
-    def instrument_key(self) -> str:
-        return instrument_key(self.instrument, self.string_count)
-
-    def column(self, suffix: str) -> str:
-        return f"{self.column_prefix}tuning_{suffix}"
-
-
-PERSPECTIVES: dict[str, TuningPerspective] = {
-    "guitar-lead": TuningPerspective(
-        "guitar-lead", "", "guitar", 6, "", False, False, "lead"),
-    "guitar-rhythm": TuningPerspective(
-        "guitar-rhythm", "rhythm", "guitar", 6, "rhythm_", False, False, "rhythm"),
-    # Bass alone truncates (padded arrays) and guards against up-tuned data —
-    # both are bass-specific findings, see the block above.
-    "bass": TuningPerspective(
-        "bass", "bass", "bass", BASS_DEFAULT_STRING_COUNT, "bass_", True, True, "bass"),
-}
-
-DEFAULT_PERSPECTIVE = "guitar-lead"
-
-# Perspectives that carry their OWN indexed columns (guitar-lead reads the
-# song-level ones, which the scanner has always written).
-ROLE_PERSPECTIVES = tuple(p for p in PERSPECTIVES.values() if p.column_prefix)
-
-
-def perspective(perspective_id) -> TuningPerspective:
-    """Resolve a perspective id, tolerating the legacy two-valued vocabulary
-    ('guitar' -> guitar-lead) and anything unknown (-> the default). An
-    unrecognised value must never change filter semantics."""
-    if perspective_id in PERSPECTIVES:
-        return PERSPECTIVES[perspective_id]
-    if perspective_id == "guitar":
-        return PERSPECTIVES[DEFAULT_PERSPECTIVE]
-    return PERSPECTIVES[DEFAULT_PERSPECTIVE]
-
-
-def normalize_offsets(offsets, persp: TuningPerspective) -> list[int] | None:
-    """Coerce a stored tuning array to the strings the perspective's
-    instrument actually has. Returns None for anything unusable (empty /
-    non-integer / too short), so callers leave the index empty rather than
-    record a guess."""
-    if not isinstance(offsets, list) or not offsets:
-        return None
-    if any(isinstance(o, bool) for o in offsets):
-        return None
-    try:
-        vals = [int(o) for o in offsets]
-    except (TypeError, ValueError):
-        return None
-    if len(vals) < persp.string_count:
-        return None
-    # Only bass truncates: its arrays are padded (see above). A guitar array
-    # longer than 6 is a genuine 7/8-string chart, and cutting it to 6 would
-    # invent a tuning the chart does not have.
-    if persp.truncate:
-        return vals[:persp.string_count]
-    return vals
-
-
-def offsets_are_plausible(offsets: list[int], persp: TuningPerspective) -> bool:
-    """False for data the perspective refuses to trust — currently only the
-    bass up-tuning guard (see BASS_MAX_PLAUSIBLE_OFFSET)."""
-    if not persp.guard_up_tuning:
-        return True
-    return all(o <= BASS_MAX_PLAUSIBLE_OFFSET for o in offsets)
-
-
-def perspective_tuning_name(offsets: list[int], persp: TuningPerspective) -> str:
-    """Name a NORMALIZED tuning for this perspective, refusing to name data the
-    perspective distrusts — that becomes "Custom Tuning", which stays distinct
-    by its canonical pitches without asserting a tuning anyone plays."""
-    if not offsets_are_plausible(offsets, persp):
-        return "Custom Tuning"
-    return tuning_name(offsets)
-
-
-def perspective_tuning_key(offsets: list[int], persp: TuningPerspective) -> str:
-    """CANONICAL grouping key: the tuning's absolute open-string pitches, so
-    the same physical tuning groups as ONE facet entry no matter how it was
-    serialized. Keyed on pitch rather than the raw offsets string, which is
-    serialization-dependent and fragments.
-
-    Joined with ':' and NOT ',' — this key travels back as a `tunings` filter
-    selector, and that query param is a COMMA-separated list, so a comma here
-    would be split into meaningless fragments and match nothing.
-    """
-    midis = tuning_midis_from_offsets(persp.instrument_key, offsets)
-    if not midis:
-        return ""
-    return persp.id + ":" + ":".join(str(m) for m in midis)
-
-
-def perspective_low_pitch(offsets: list[int], persp: TuningPerspective) -> int | None:
-    """Absolute MIDI pitch of the tuning's LOWEST open string — the value the
-    "playable without retuning" comparison is built on (see
-    `chart_is_playable_in`)."""
-    midis = tuning_midis_from_offsets(persp.instrument_key, offsets)
-    if not midis:
-        return None
-    return min(midis)
-
-
-# ── "Playable without retuning" ──────────────────────────────────────────────
-#
-# What the player actually wants is "don't make me retune", not "match this
-# label". A chart is playable as-is when every pitch it needs is reachable on
-# the instrument as currently tuned.
-#
-# WHAT WE CAN HONESTLY COMPUTE. We index open-string TUNINGS, not the notes a
-# chart plays — note data lives in the 600KB-1.2MB arrangement JSON, and the
-# library scan is deliberately manifest-only, so we do not read it (indexing a
-# per-song lowest note would mean opening every chart on every scan).
-#
-# So the comparison is on OPEN-STRING PITCH, with a conservative assumption:
-# a chart may require its own lowest open string. That gives
-#
-#     playable  <=>  your lowest open pitch  <=  the chart's lowest open pitch
-#
-# On a fretted instrument every pitch ABOVE your lowest open string is
-# reachable by fretting (strings sit within an octave of each other and the
-# neck gives ~2 octaves), so the low end is the binding constraint. This is
-# exactly the dominant real case: a 5-string bass (low B) plays every 4-string
-# standard chart AND every drop-D chart untouched, because the low D is just
-# fretted on the B string.
-#
-# DELIBERATE LIMITATIONS, both erring toward NOT claiming playability:
-#   * A chart that never actually touches its lowest open string is excluded
-#     anyway. Conservative: excluding a playable chart costs a scroll;
-#     including an unplayable one costs a mid-practice retune, which is the
-#     failure this feature exists to prevent.
-#   * The UPPER bound is not checked — a chart tuned far above you could in
-#     principle exceed your neck. Checking it needs the note range we do not
-#     have. It is the rare direction (and the guard above already refuses
-#     up-tuned bass data), but it is a real gap, not an oversight.
-def chart_is_playable_in(chart_low_pitch, your_low_pitch) -> bool:
-    """True when a chart whose lowest open string is `chart_low_pitch` needs no
-    retune for a player tuned to `your_low_pitch`. Unknown chart pitch => False
-    (never claim playability we cannot support)."""
-    if chart_low_pitch is None or your_low_pitch is None:
-        return False
-    return int(your_low_pitch) <= int(chart_low_pitch)
-
-
-# Back-compat wrappers over the generic helpers — bass was the first
-# perspective and reads better spelled out at bass-specific call sites.
-def normalize_bass_offsets(offsets) -> list[int] | None:
-    return normalize_offsets(offsets, PERSPECTIVES["bass"])
-
-
-def bass_offsets_are_plausible(offsets: list[int]) -> bool:
-    return offsets_are_plausible(offsets, PERSPECTIVES["bass"])
-
-
-def bass_tuning_name(offsets: list[int]) -> str:
-    return perspective_tuning_name(offsets, PERSPECTIVES["bass"])
-
-
-def bass_tuning_key(offsets: list[int]) -> str:
-    return perspective_tuning_key(offsets, PERSPECTIVES["bass"])
-
-
 def tuning_name(offsets: list[int]) -> str:
-    # The pattern checks below are gated on `len(offsets)` being 6 or 4. The
-    # naming conventions are E-standard-rooted — e.g. a 7-string all-zeros
+    # All three pattern checks below are gated on `len(offsets) == 6`. The
+    # naming conventions here are 6-string-specific — e.g. a 7-string all-zeros
     # tuning has a low B, not an E, so labeling it "E Standard" would be wrong.
-    # 7+-string community content falls through to the numeric fallback (#43).
-    #
-    # Length 4 is accepted because a bass's open strings (EADG) are the low
-    # four of the guitar, so the same standard/drop names apply at the same
-    # offsets. Bass callers must normalize FIRST (`normalize_bass_offsets`):
-    # stored bass arrays are commonly six elements with a padded tail, and the
-    # padding must never reach this namer. See the block above.
+    # 7+-string community content falls through to the numeric fallback. See #43.
 
-    # Standard tunings (all strings same offset)
+    # Standard tunings (all six strings same offset)
     standard = {
         0: "E Standard", -1: "Eb Standard", -2: "D Standard",
         -3: "C# Standard", -4: "C Standard", -5: "B Standard",
         -6: "Bb Standard", -7: "A Standard",
         1: "F Standard", 2: "F# Standard",
     }
-    if len(offsets) in (4, 6) and all(o == offsets[0] for o in offsets):
+    if len(offsets) == 6 and all(o == offsets[0] for o in offsets):
         name = standard.get(offsets[0])
         if name:
             return name
 
     # Drop tunings (low string 2 semitones below the rest)
     # Named after the low string's note: e.g. offsets[-2,0,0,0,0,0] = Drop D (low E dropped to D)
-    if len(offsets) in (4, 6) and offsets[0] == offsets[1] - 2 and all(o == offsets[1] for o in offsets[1:]):
+    if len(offsets) == 6 and offsets[0] == offsets[1] - 2 and all(o == offsets[1] for o in offsets[1:]):
         note_names = ["E", "F", "F#", "G", "Ab", "A", "Bb", "B", "C", "C#", "D", "Eb"]
         low_note = note_names[offsets[0] % 12]
         return f"Drop {low_note}"

main.py

@@ -44,13 +44,6 @@ def run() -> None:
         # record — including early startup messages — passes through the same
         # structured pipeline.
         log_config=None,
-        # Cap inbound WebSocket frames at the transport, before uvicorn
-        # materializes them in memory (its default is 16 MB). No client sends
-        # large frames to this server: the highway WS receives only small
-        # control messages, and the /ws/sync relay enforces its own tighter
-        # 16 KB application cap (routers/ws_sync.py MAX_FRAME_BYTES) — this is
-        # the defense-in-depth bound above it.
-        ws_max_size=64 * 1024,
     )
 
 

package.json

@@ -14,7 +14,6 @@
   "devDependencies": {
     "@playwright/test": "^1.59.1",
     "eslint": "^9.39.4",
-    "eslint-plugin-import-x": "^4.17.1",
-    "tailwindcss": "^3.4.19"
+    "eslint-plugin-import-x": "^4.17.1"
   }
 }

plugins/capability_inspector/screen.js

@@ -25,8 +25,8 @@
         Object.freeze({
             id: 'player-audio',
             label: 'Player and Audio Runtime',
-            summary: 'Playback, renderer, chart-transform, mixer, monitoring, effects, and note-detection surfaces.',
-            domains: Object.freeze(['playback', 'visualization', 'chart-transform', 'audio-mix', 'audio-input', 'audio-monitoring', 'audio-effects', 'stems', 'note-detection']),
+            summary: 'Playback, renderer, mixer, monitoring, effects, and note-detection surfaces.',
+            domains: Object.freeze(['playback', 'visualization', 'audio-mix', 'audio-input', 'audio-monitoring', 'audio-effects', 'stems', 'note-detection']),
         }),
         Object.freeze({
             id: 'plugin-defined',
@@ -50,7 +50,6 @@
         'audio-monitoring': 'headphones',
         stems: 'sliders',
         'note-detection': 'activity',
-        'chart-transform': 'box',
         diagnostics: 'fileSearch',
         pipeline: 'activity',
         'ui.navigation': 'list',

plugins/career/assets/career.css

@@ -99,8 +99,7 @@
 .pp-inst-plus { color: #6b7280; }
 
 /* Leather covers — per-instrument hue, embossed with layered shadows and a
-   subtle grain gradient (no image assets). Keep the hex pairs in sync with
-   PP_LEATHER_HEX in screen.js (the canvas card draws the same leather). */
+   subtle grain gradient (no image assets). */
 .pp-leather-guitar { background: linear-gradient(160deg, #5c2321, #401412); }
 .pp-leather-bass { background: linear-gradient(160deg, #1f3252, #131f36); }
 .pp-leather-keys { background: linear-gradient(160deg, #1e4034, #122a21); }
@@ -125,7 +124,7 @@
     text-align: center;
 }
 .pp-cover { transition: transform 0.15s ease, box-shadow 0.15s ease; }
-.pp-cover:not(.pp-tilt):hover { transform: translateY(-4px) !important; box-shadow: 0 10px 22px rgba(0, 0, 0, 0.55); }
+.pp-cover:hover { transform: translateY(-4px) !important; box-shadow: 0 10px 22px rgba(0, 0, 0, 0.55); }
 .pp-cover-title {
     font-weight: 700;
     font-size: 0.85rem;
@@ -410,382 +409,3 @@
     .pp-slam, .pp-stamp-page::after { opacity: 1; }
     .pp-stamp-hidden { opacity: 0.92; }
 }
-
-/* Badge ceremony (body-level overlay — shows over the player) */
-.pp-ceremony-overlay {
-    position: fixed;
-    inset: 0;
-    z-index: 220;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    background: rgba(3, 7, 18, 0.55);
-    backdrop-filter: blur(1.5px);
-    animation: pp-ceremony-in 0.3s ease-out;
-    cursor: pointer;
-}
-.pp-ceremony-out { opacity: 0; transition: opacity 0.3s ease-out; }
-.pp-confetti { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; }
-.pp-ceremony-card {
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    gap: 0.5rem;
-    text-align: center;
-}
-.pp-ceremony-stamp {
-    position: relative;
-    overflow: hidden;
-    background: rgba(239, 230, 208, 0.97);
-    transform: rotate(var(--pp-rot)) scale(1.25);
-    animation: pp-slam 0.55s cubic-bezier(0.2, 0.8, 0.3, 1) 0.15s backwards;
-    margin-top: 0;
-}
-.pp-ceremony-stamp::before {
-    content: '';
-    position: absolute;
-    inset: -40%;
-    background: linear-gradient(115deg, transparent 42%, rgba(255, 255, 255, 0.55) 50%, transparent 58%);
-    transform: translateX(-120%);
-    animation: pp-shine 1.1s ease-out 0.75s forwards;
-    pointer-events: none;
-}
-@keyframes pp-shine {
-    to { transform: translateX(120%); }
-}
-@keyframes pp-ceremony-in {
-    from { opacity: 0; }
-    to { opacity: 1; }
-}
-.pp-ceremony-title {
-    margin-top: 1rem;
-    font-size: 1.15rem;
-    font-weight: 700;
-    letter-spacing: 0.18em;
-    text-transform: uppercase;
-    color: #f0e2c3;
-    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
-}
-.pp-ceremony-sub { font-size: 0.8rem; color: #d1d5db; text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8); }
-
-/* Hours odometer (Stage 5 post-cap — a true fact, never a meter) */
-.pp-hours {
-    font-size: 0.72rem;
-    letter-spacing: 0.08em;
-    color: #8a7a5e;
-    margin-top: 0.75rem;
-    font-variant-numeric: tabular-nums;
-}
-
-/* ── Visuals pack: trading-card tilt, emerging ink, gold foil ──────────── */
-
-/* Trading-card tilt (earned artifacts; JS feeds --pp-tilt-* on hover-capable
-   pointers only). */
-.pp-tilt {
-    position: relative;
-    overflow: hidden;
-    will-change: transform;
-}
-.pp-cover.pp-tilt {
-    transform: perspective(700px)
-        rotateX(var(--pp-tilt-x, 0deg)) rotateY(var(--pp-tilt-y, 0deg))
-        rotate(var(--pp-cover-rot, 0deg));
-    transition: transform 0.12s ease, box-shadow 0.15s ease;
-}
-.pp-cover.pp-tilt:hover { box-shadow: 0 12px 26px rgba(0, 0, 0, 0.6); }
-.pp-stamp-page.pp-tilt {
-    overflow: visible;
-    transform: perspective(600px)
-        rotateX(var(--pp-tilt-x, 0deg)) rotateY(var(--pp-tilt-y, 0deg))
-        rotate(var(--pp-rot));
-    transition: transform 0.12s ease;
-}
-.pp-tilt::after {
-    content: '';
-    position: absolute;
-    inset: 0;
-    border-radius: inherit;
-    background: linear-gradient(105deg,
-        transparent calc(var(--pp-glint-x, 50%) - 14%),
-        rgba(255, 255, 255, 0.16) var(--pp-glint-x, 50%),
-        transparent calc(var(--pp-glint-x, 50%) + 14%));
-    opacity: 0;
-    transition: opacity 0.2s ease;
-    pointer-events: none;
-}
-.pp-tilt:hover::after { opacity: 1; }
-
-/* Emerging-stamp ink: the ghost fills as qualifying songs land. */
-.pp-stamp-ghost::before {
-    content: '';
-    position: absolute;
-    inset: 7%;
-    border-radius: 999px;
-    background: conic-gradient(rgba(154, 91, 22, 0.16) var(--pp-fill, 0%), transparent 0);
-    pointer-events: none;
-}
-
-/* Gold ink — a REAL gold badge (comb-verified improv). */
-.pp-stamp-gold {
-    border-color: #b8860b;
-    color: #a97b1b;
-    box-shadow: inset 0 0 0 3px #f3e8c8, inset 0 0 0 4px #b8860b;
-}
-.pp-stamp-mini.pp-stamp-gold {
-    color: #f0c75e;
-    border-color: #f0c75e;
-    box-shadow: none;
-}
-/* Gold foil chip — rendered only alongside an earned gold stamp. */
-.pp-gold-foil {
-    position: relative;
-    overflow: hidden;
-    display: inline-flex;
-    align-items: center;
-    justify-content: center;
-    margin-top: 0.9rem;
-    padding: 0.28rem 0.85rem;
-    border-radius: 999px;
-    border: 2px solid #d9a253;
-    color: #c89040;
-    font-size: 0.58rem;
-    font-weight: 700;
-    letter-spacing: 0.32em;
-}
-.pp-gold-foil::after {
-    content: '';
-    position: absolute;
-    inset: 0;
-    background: linear-gradient(100deg, transparent 40%, rgba(255, 223, 128, 0.35) 50%, transparent 60%);
-    transform: translateX(-120%);
-    animation: pp-foil 3.4s ease-in-out infinite;
-}
-@keyframes pp-foil {
-    0%, 55% { transform: translateX(-120%); }
-    100% { transform: translateX(120%); }
-}
-
-@media (prefers-reduced-motion: reduce) {
-    .pp-gold-foil::after { animation: none; }
-    .pp-cover.pp-tilt, .pp-stamp-page.pp-tilt { transition: none; }
-    /* The hover glint is motion theatrics too — not just the JS tilt. */
-    .pp-tilt::after { display: none; }
-}
-
-/* Practice invitations — closest stamps + bring-these-up */
-.pp-closest {
-    border: 1px solid rgba(75, 85, 99, 0.45);
-    border-radius: 0.6rem;
-    background: linear-gradient(165deg, rgba(45, 55, 72, 0.4), rgba(31, 41, 55, 0.4));
-    padding: 0.6rem 0.75rem;
-    display: flex;
-    flex-direction: column;
-    gap: 0.3rem;
-}
-.pp-closest-head {
-    font-size: 0.62rem;
-    letter-spacing: 0.22em;
-    text-transform: uppercase;
-    color: #9ca3af;
-}
-.pp-closest-row {
-    display: flex;
-    align-items: baseline;
-    gap: 0.75rem;
-    text-align: left;
-    font-size: 0.8rem;
-    padding: 0.15rem 0.25rem;
-    border-radius: 0.35rem;
-}
-.pp-closest-row:hover { background: rgba(55, 65, 81, 0.5); }
-.pp-closest-genre { color: #e5e7eb; font-weight: 600; white-space: nowrap; }
-.pp-closest-ask { color: #9ca3af; font-size: 0.72rem; }
-.pp-closest-ask em { color: #cbd5e1; font-style: italic; }
-
-.pp-nearest { margin-top: 0.6rem; border-top: 1px dashed rgba(138, 122, 94, 0.4); padding-top: 0.5rem; }
-.pp-nearest-head {
-    font-size: 0.58rem;
-    letter-spacing: 0.22em;
-    text-transform: uppercase;
-    color: #8a7a5e;
-    margin-bottom: 0.25rem;
-}
-.pp-nearest-row { font-size: 0.7rem; color: #6d5d40; padding: 0.1rem 0; }
-.pp-nearest-row em { color: #3f3428; }
-/* ── Career surfaces outside the plugin: profile wall + home card ───────── */
-
-.pp-wall { display: flex; flex-direction: column; gap: 0.6rem; }
-.pp-wall-head {
-    display: flex;
-    align-items: baseline;
-    justify-content: space-between;
-    font-weight: 600;
-    color: #e5e7eb;
-    font-size: 0.9rem;
-}
-.pp-wall-meta { color: #9ca3af; font-size: 0.7rem; font-weight: 400; }
-.pp-wall-shelf {
-    display: flex;
-    align-items: center;
-    flex-wrap: wrap;
-    gap: 0.5rem;
-    padding: 0.35rem 0;
-    border-bottom: 1px solid rgba(75, 85, 99, 0.25);
-}
-.pp-wall-inst {
-    font-size: 0.62rem;
-    letter-spacing: 0.18em;
-    text-transform: uppercase;
-    color: #6b7280;
-    min-width: 3.6rem;
-}
-.pp-wall-cover {
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    justify-content: center;
-    gap: 0.1rem;
-    width: 4.2rem;
-    height: 5.6rem;
-    border-radius: 0.3rem 0.45rem 0.45rem 0.3rem;
-    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.07),
-        inset 0.25rem 0 0.4rem -0.25rem rgba(0, 0, 0, 0.8),
-        0 3px 8px rgba(0, 0, 0, 0.4);
-    padding: 0.3rem;
-    transition: transform 0.15s ease;
-}
-.pp-wall-cover:hover { transform: translateY(-3px); }
-.pp-wall-cover span {
-    font-size: 0.5rem;
-    font-weight: 700;
-    letter-spacing: 0.1em;
-    color: rgba(240, 226, 195, 0.9);
-    overflow-wrap: anywhere;
-    text-align: center;
-}
-.pp-wall-cover em {
-    font-size: 0.42rem;
-    letter-spacing: 0.22em;
-    font-style: normal;
-    color: #d9a253;
-}
-.pp-wall-none { font-size: 0.7rem; color: #6b7280; font-style: italic; }
-.pp-wall-link {
-    align-self: flex-end;
-    font-size: 0.72rem;
-    color: #22d3ee;
-    padding: 0.15rem 0.3rem;
-}
-.pp-wall-link:hover { text-decoration: underline; }
-
-/* The home-page career card — a trading card among stat tiles. */
-.pp-dash-card {
-    position: relative;
-    overflow: hidden;
-    width: 100%;
-    height: 100%;
-    display: flex;
-    flex-direction: column;
-    justify-content: center;
-    gap: 0.2rem;
-    text-align: left;
-    padding: 1rem;
-    border-radius: 0.5rem;
-    border: 1px solid rgba(217, 162, 83, 0.35);
-    background:
-        linear-gradient(135deg, rgba(92, 35, 33, 0.85), rgba(30, 27, 34, 0.92)),
-        linear-gradient(160deg, #2b1414, #17111c);
-    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05), 0 4px 14px rgba(0, 0, 0, 0.35);
-    transition: transform 0.15s ease, box-shadow 0.15s ease;
-}
-.pp-dash-card:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5); }
-.pp-dash-shine {
-    position: absolute;
-    inset: 0;
-    background: linear-gradient(105deg, transparent 42%, rgba(255, 223, 128, 0.18) 50%, transparent 58%);
-    transform: translateX(-130%);
-    pointer-events: none;
-}
-.pp-dash-card:hover .pp-dash-shine { animation: pp-foil 1.4s ease-out; }
-.pp-dash-head {
-    font-size: 0.58rem;
-    letter-spacing: 0.3em;
-    text-transform: uppercase;
-    color: #d9a253;
-}
-.pp-dash-badges { color: #f3ead2; font-size: 1.05rem; }
-.pp-dash-badges b { font-weight: 700; margin: 0 0.25rem 0 0.35rem; }
-.pp-dash-meta { color: #b5a488; font-size: 0.72rem; }
-.pp-dash-ask { color: #8d9aa8; font-size: 0.66rem; }
-.pp-dash-ask em { color: #cbd5e1; }
-
-.pp-card-actions { display: flex; gap: 0.5rem; margin-top: 0.9rem; }
-
-@media (prefers-reduced-motion: reduce) {
-    .pp-dash-card:hover .pp-dash-shine { animation: none; }
-    .pp-wall-cover, .pp-dash-card { transition: none; }
-}
-
-/* ── Gigs: poster, runner strip, summary, log ───────────────────────────── */
-
-.pp-poster {
-    position: relative;
-    width: min(92vw, 420px);
-    padding: 2rem 1.6rem 1.4rem;
-    border-radius: 0.5rem;
-    background: linear-gradient(180deg, #141019, #241318);
-    border: 2px solid rgba(217, 162, 83, 0.45);
-    box-shadow: 0 10px 32px rgba(0, 0, 0, 0.6);
-    display: flex;
-    flex-direction: column;
-    align-items: center;
-    gap: 0.35rem;
-    text-align: center;
-}
-.pp-poster-venue { color: rgba(240, 226, 195, 0.7); font-size: 0.95rem; letter-spacing: 0.08em; }
-.pp-poster-presents { color: rgba(240, 226, 195, 0.4); font-size: 0.58rem; letter-spacing: 0.4em; text-transform: uppercase; }
-.pp-poster-title {
-    color: #d9a253;
-    font-size: 1.7rem;
-    font-weight: 800;
-    letter-spacing: 0.1em;
-    line-height: 1.15;
-    overflow-wrap: anywhere;
-}
-.pp-poster-inst { color: rgba(240, 226, 195, 0.5); font-size: 0.68rem; letter-spacing: 0.2em; text-transform: uppercase; }
-.pp-poster-bill { margin: 0.9rem 0 0.5rem; display: flex; flex-direction: column; gap: 0.35rem; width: 100%; }
-.pp-poster-line { color: rgba(240, 226, 195, 0.85); font-size: 0.85rem; }
-.pp-poster-line span { color: rgba(217, 162, 83, 0.7); margin-right: 0.35rem; }
-.pp-poster-line em { color: rgba(240, 226, 195, 0.5); font-style: italic; font-size: 0.72rem; }
-.pp-poster-line b { color: #f3d179; margin-left: 0.3rem; }
-.pp-poster-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; justify-content: center; margin-top: 0.6rem; }
-.pp-poster-summary { cursor: default; }
-
-.pp-gig-strip {
-    position: fixed;
-    top: 0.5rem;
-    left: 50%;
-    transform: translateX(-50%);
-    z-index: 35; /* above the rail (30), under popovers (40) — the chrome invariant */
-    background: rgba(10, 8, 14, 0.85);
-    border: 1px solid rgba(217, 162, 83, 0.4);
-    border-radius: 999px;
-    color: rgba(240, 226, 195, 0.85);
-    font-size: 0.72rem;
-    padding: 0.3rem 0.9rem;
-    pointer-events: none;
-    backdrop-filter: blur(2px);
-}
-.pp-gig-strip b { color: #d9a253; letter-spacing: 0.2em; }
-.pp-gig-strip em { color: #f3ead2; font-style: italic; }
-
-.pp-giglog { margin-top: 0.6rem; border-top: 1px dashed rgba(138, 122, 94, 0.4); padding-top: 0.5rem; }
-.pp-giglog-head {
-    font-size: 0.58rem;
-    letter-spacing: 0.22em;
-    text-transform: uppercase;
-    color: #8a7a5e;
-    margin-bottom: 0.25rem;
-}
-.pp-giglog-row { font-size: 0.7rem; color: #6d5d40; padding: 0.1rem 0; }
-.pp-giglog-row b { color: #9a5b16; letter-spacing: 0.06em; }

plugins/career/passports.json

@@ -3,33 +3,7 @@
         "songs": 5,
         "min_stars": 2
     },
-    "gig": {
-        "min_songs": 3,
-        "max_songs": 5,
-        "stakes_songs": 2,
-        "encore_accuracy": 0.75
-    },
-    "families": [
-        { "key": "metal", "match": ["metal", "djent", "grindcore", "thrash", "doom"] },
-        { "key": "blues", "match": ["blues"] },
-        { "key": "jazz", "match": ["jazz", "bebop", "swing", "bossa"] },
-        { "key": "funk", "match": ["funk", "disco"] },
-        { "key": "rock", "match": ["rock", "punk", "grunge", "shoegaze"] }
-    ],
-    "genres": {
-        "blues": { "virtuoso_nodes": { "guitar": ["blues_shuffle"] } },
-        "rock": { "virtuoso_nodes": { "guitar": ["rock_power_backbeat"] } },
-        "metal": { "virtuoso_nodes": { "guitar": ["melodic_metal_gallop"] } },
-        "funk": { "virtuoso_nodes": { "guitar": ["sixteenth_pocket"] } },
-        "jazz": { "virtuoso_nodes": { "guitar": ["vl_shells"] } }
-    },
-    "drill_labels": {
-        "blues_shuffle": "Blues Shuffle",
-        "rock_power_backbeat": "Power Chords & Backbeat",
-        "melodic_metal_gallop": "Gallop Picking",
-        "sixteenth_pocket": "16th Pocket",
-        "vl_shells": "Shell Voicings"
-    },
+    "genres": {},
     "graded_instruments": [
         "guitar",
         "keys"

plugins/career/routes.py

@@ -26,14 +26,11 @@ Endpoints (all under /api/plugins/career/):
   POST   /passports/commit            commit to an instrument (the wax seal, Stage 0)
   POST   /passports/open              open a genre passport for an instrument
   POST   /drill-state                 relayed virtuoso.progress snapshot (drill intake)
-  POST   /gigs/propose                build a playable setlist for a genre gig
-  POST   /gigs                        log a COMPLETED gig (abandoned sets never log)
 """
 
 import hashlib
 import json
 import logging
-import random
 import re
 import shutil
 import tempfile
@@ -46,8 +43,6 @@ from pathlib import Path
 from fastapi import Body, HTTPException
 from fastapi.responses import FileResponse
 
-import sloppak
-from dlc_paths import _resolve_dlc_path
 from progression import instrument_for_arrangement
 
 PLUGIN_ID = "career"
@@ -55,9 +50,6 @@ VENUE_ID_RE = re.compile(r"^[a-z0-9_-]{1,40}$")
 PACK_FILENAME_RE = re.compile(r"^[a-z0-9_-]{1,64}\.(mp4|webm|mp3|json)$")
 REQUIRED_LOOPS = ("bored", "neutral", "engaged", "ecstatic")
 DOWNLOAD_CHUNK = 1024 * 256
-# A setlist is a handful of songs; this endpoint unpacks zips, so cap the work an
-# arbitrary caller can ask for.
-MAX_GIG_SONGS = 32
 
 _lock = threading.Lock()
 _state = {
@@ -104,13 +96,6 @@ def _bundled(venue_id):
     return (_bundled_venue_dir(venue_id) / "manifest.json").is_file()
 
 
-def _pack_published(pack):
-    """A remote pack is downloadable only once a publish has stamped its real
-    size — the committed manifest carries a 0-byte placeholder (and an all-zero
-    sha) until then, so don't offer a download that can't succeed yet."""
-    return bool(pack and (pack.get("bytes") or 0) > 0)
-
-
 def _stars():
     """(total, per-song dict, detail rows). Accuracy is a 0..1 fraction."""
     db = _state["meta_db"]
@@ -129,9 +114,10 @@ def _stars():
     detail = []
     for filename, acc, title, artist in rows:
         acc = acc or 0.0
-        stars, next_at = _star_progress(acc, thresholds)
+        stars = sum(1 for t in thresholds if acc >= t)
         if stars:
             per_song[filename] = stars
+        next_at = next((t for t in thresholds if acc < t), None)
         detail.append({
             "filename": filename,
             "title": title or filename,
@@ -217,24 +203,21 @@ def _instrument_of(arrangements, arrangement):
 
 
 def _played_by_instrument_genre():
-    """((instrument, genre_key) → {filename: stub dict},
-        (instrument, genre_key) → total played seconds).
-    Best accuracy per (instrument, song); seconds sum across every
-    arrangement row; the JOIN keeps the same dead-song filter as _stars()."""
+    """(instrument, genre_key) → {filename: stub dict}. Best accuracy per
+    (instrument, song); the JOIN keeps the same dead-song filter as _stars()."""
     db = _state["meta_db"]
     if db is None:
-        return {}, {}
+        return {}
     thresholds = _state["content"]["star_accuracy_thresholds"]
     rows = db.conn.execute(
         "SELECT s.filename, s.arrangement, s.best_accuracy, s.last_played_at, "
-        "       s.seconds_total, songs.title, songs.artist, songs.arrangements, "
+        "       songs.title, songs.artist, songs.arrangements, "
         f"      {_genre_expr(db)} "
         "FROM song_stats s JOIN songs ON songs.filename = s.filename"
     ).fetchall()
     arrs_cache = {}
     out = {}
-    seconds = {}
-    for filename, arrangement, acc, played_at, secs, title, artist, arrs_json, genre in rows:
+    for filename, arrangement, acc, played_at, title, artist, arrs_json, genre in rows:
         gkey = _genre_key(genre)
         if not gkey:
             continue
@@ -244,12 +227,10 @@ def _played_by_instrument_genre():
             except (TypeError, ValueError):
                 arrs_cache[filename] = None
         instrument = _instrument_of(arrs_cache[filename], arrangement)
-        key = (instrument, gkey)
-        seconds[key] = seconds.get(key, 0.0) + (secs or 0.0)
         acc = acc or 0.0
-        stub = out.setdefault(key, {}).get(filename)
+        stub = out.setdefault((instrument, gkey), {}).get(filename)
         if stub is None:
-            out[key][filename] = {
+            out[(instrument, gkey)][filename] = {
                 "filename": filename,
                 "title": title or filename,
                 "artist": artist or "",
@@ -263,16 +244,8 @@ def _played_by_instrument_genre():
         for stub in stubs.values():
             acc = stub["best_accuracy"]
             stub["best_accuracy"] = round(acc, 4)
-            stub["stars"], stub["next_star_at"] = _star_progress(acc, thresholds)
-    return out, seconds
-
-
-def _star_progress(acc, thresholds):
-    """(stars, next_star_at) — the one place the ascending-thresholds
-    assumption lives; _stars() and the passport stubs both use it."""
-    stars = sum(1 for t in thresholds if acc >= t)
-    next_at = next((t for t in thresholds if acc < t), None)
-    return stars, next_at
+            stub["stars"] = sum(1 for t in thresholds if acc >= t)
+    return out
 
 
 def _library_genres():
@@ -298,120 +271,44 @@ def _library_genres():
                   key=lambda r: (-r["songs_in_library"], r["genre_key"]))
 
 
-def _genre_family(gkey):
-    """First family whose keyword appears in the genre key (substring — MB's
-    vocabulary is open: 'metalcore' must hit the 'metal' family without an
-    exact alias). List order decides ambiguity: families are checked top to
-    bottom, so 'blues rock' lands on whichever of blues/rock is listed first."""
-    for fam in _state["passports_content"].get("families") or []:
-        if not isinstance(fam, dict):
-            continue
-        for kw in fam.get("match") or []:
-            if isinstance(kw, str) and kw and kw in gkey:
-                return fam.get("key")
-    return None
-
-
-def _badge_requirement(gkey, instrument="guitar"):
+def _badge_requirement(gkey):
     cfg = _state["passports_content"]
     req = dict(cfg.get("badge_requirement") or {})
     req.setdefault("songs", 5)
     req.setdefault("min_stars", 2)
-    # Exact per-genre override wins; otherwise the genre inherits its FAMILY's
-    # requirement — so 'death metal' / 'metalcore' passports carry the metal
-    # drill without curating every MB sub-genre by hand.
-    genres_cfg = cfg.get("genres") or {}
-    override = genres_cfg.get(gkey)
-    if not isinstance(override, dict):
-        family = _genre_family(gkey)
-        override = genres_cfg.get(family) if family else None
+    override = (cfg.get("genres") or {}).get(gkey)
     if isinstance(override, dict):
         req.update(override)
-    # virtuoso_nodes: {instrument: [node_ids]} — a passport only carries its
-    # own instrument's drills. A flat list keeps meaning guitar (back-compat;
-    # virtuoso's drill content is guitar-first).
-    nodes = req.get("virtuoso_nodes") or []
-    if isinstance(nodes, dict):
-        nodes = nodes.get(instrument) or []
-    elif instrument != "guitar":
-        nodes = []
-    req["virtuoso_nodes"] = [n for n in nodes if isinstance(n, str)]
+    req["virtuoso_nodes"] = [n for n in (req.get("virtuoso_nodes") or [])
+                             if isinstance(n, str)]
     return req
 
 
 def _drill_by_node():
     doc = _load_json(_drill_file(), {})
     if not isinstance(doc, dict):
-        return None, {}, {}
+        return None, {}
     snapshot = doc.get("snapshot") if isinstance(doc.get("snapshot"), dict) else {}
     by_node = snapshot.get("byNode") if isinstance(snapshot.get("byNode"), dict) else {}
-    gold = snapshot.get("goldImprov") if isinstance(snapshot.get("goldImprov"), dict) else {}
-    return doc.get("received_at"), by_node, gold
-
-
-def _merge_drill_nodes(old, new):
-    """Gained-only merge of virtuoso byNode snapshots: a completion artifact
-    once relayed never un-earns via a stale snapshot (multi-browser races,
-    settings import, the once-per-session boot relay). Incoming wins the
-    descriptive fields; masteredAt / depth flips / keysCleared only grow."""
-    out = dict(old)
-    for node_id, incoming in new.items():
-        if not isinstance(incoming, dict):
-            continue
-        cur = out.get(node_id)
-        if not isinstance(cur, dict):
-            out[node_id] = incoming
-            continue
-        merged = dict(cur)
-        merged.update(incoming)
-        merged["masteredAt"] = cur.get("masteredAt") or incoming.get("masteredAt")
-        d_old = cur.get("depth") if isinstance(cur.get("depth"), dict) else {}
-        d_new = incoming.get("depth") if isinstance(incoming.get("depth"), dict) else {}
-        depth = dict(d_new)
-        for axis, val in d_old.items():
-            if val and not depth.get(axis):
-                depth[axis] = val
-        if depth:
-            merged["depth"] = depth
-        keys_old = cur.get("keysCleared") if isinstance(cur.get("keysCleared"), list) else []
-        keys_new = incoming.get("keysCleared") if isinstance(incoming.get("keysCleared"), list) else []
-        merged["keysCleared"] = keys_old + [k for k in keys_new if k not in keys_old]
-        out[node_id] = merged
-    return out
-
-
-def _merge_gold(old, new):
-    """Gained-only merge of goldImprov artifacts: a minted style never
-    un-mints via a stale relay; the FIRST artifact per style is kept."""
-    out = dict(old)
-    for style_id, art in (new or {}).items():
-        if isinstance(art, dict) and style_id not in out:
-            out[style_id] = art
-    return out
+    return doc.get("received_at"), by_node
 
 
 def _node_cleared(by_node, node_id):
-    """A drill counts as cleared on real completion evidence: mastered, any
-    depth rung flipped true, or a key cleared (a top-tier clean pass in one
-    key — virtuoso's first gained-only artifact, and an achievable Bronze
-    bar; the depth rungs additionally require a maxed speed tier)."""
+    """A drill counts as cleared on real completion evidence: mastered, or any
+    depth rung flipped true (virtuoso's gained-only false→true artifacts)."""
     entry = by_node.get(node_id)
     if not isinstance(entry, dict):
         return False
     depth = entry.get("depth") if isinstance(entry.get("depth"), dict) else {}
-    keys = entry.get("keysCleared")
-    return (bool(entry.get("masteredAt"))
-            or any(bool(v) for v in depth.values())
-            or bool(isinstance(keys, list) and keys))
+    return bool(entry.get("masteredAt")) or any(bool(v) for v in depth.values())
 
 
 def _passports_view():
     cfg = _state["passports_content"]
     graded = set(cfg.get("graded_instruments") or [])
     st = _career_state()
-    all_gigs = st.get("gigs") if isinstance(st.get("gigs"), list) else []
-    played, played_seconds = _played_by_instrument_genre()
-    received_at, by_node, gold_improv = _drill_by_node()
+    played = _played_by_instrument_genre()
+    received_at, by_node = _drill_by_node()
     instruments = {}
     for inst in cfg.get("instruments") or []:
         committed_at = (st["instruments"].get(inst) or {}).get("committed_at")
@@ -421,7 +318,7 @@ def _passports_view():
         for gkey, meta in sorted(opened.items(),
                                  key=lambda kv: ((kv[1] or {}).get("opened_at") or "", kv[0])):
             meta = meta if isinstance(meta, dict) else {}
-            req = _badge_requirement(gkey, inst)
+            req = _badge_requirement(gkey)
             songs = list(played.get((inst, gkey), {}).values())
             for s in songs:
                 s["qualifies"] = s["stars"] >= req["min_stars"]
@@ -437,33 +334,9 @@ def _passports_view():
                 # false badge denial — the doc's shown-not-judged rule.
                 badge = "shown_not_judged"
             elif qualifying >= req["songs"] and len(cleared) == len(required):
-                # Bronze is earned; GOLD upgrades it when a verified improv
-                # artifact exists for this genre's jam style. Virtuoso mints
-                # under raw STYLE_PALETTES ids ('punk', 'djent', 'disco', ...),
-                # which are mostly NOT family keys — so match in family space:
-                # the same keyword bucketing genres get ('punk' and 'punk
-                # rock' both bucket to 'rock'), with the exact key as a direct
-                # hit. Bronze remains a standalone win; gold never becomes an
-                # obligation.
-                fam = _genre_family(gkey)
-                gold = any(
-                    s == gkey or (fam is not None and _genre_family(s) == fam)
-                    for s in gold_improv
-                )
-                badge = "gold" if gold else "earned"
+                badge = "earned"
             else:
                 badge = "in_progress"
-            # Practice invitation: the non-qualifying songs closest to the
-            # QUALIFYING bar (the badge ask), nearest first — invitation
-            # data, the UI voices it without meters.
-            thresholds = _state["content"]["star_accuracy_thresholds"]
-            bar = (thresholds[req["min_stars"] - 1]
-                   if 0 < req["min_stars"] <= len(thresholds) else None)
-            nearest = [] if bar is None else sorted(
-                (s for s in songs if not s["qualifies"]),
-                key=lambda s: bar - s["best_accuracy"])[:3]
-            for s in nearest:
-                s["bar_at"] = bar
             passports.append({
                 "genre_key": gkey,
                 "genre": meta.get("genre") or gkey,
@@ -472,25 +345,15 @@ def _passports_view():
                 "graded": is_graded,
                 "songs": songs,
                 "qualifying_count": qualifying,
-                "nearest": nearest,
-                # Honest hours odometer (Stage 5 post-cap): a true fact that
-                # only grows — never a target, never a meter.
-                "seconds_total": round(played_seconds.get((inst, gkey), 0.0), 1),
                 "drills": {"required": required, "cleared": cleared},
                 "badge": badge,
             })
-        inst_gigs = [g for g in all_gigs if g.get("instrument") == inst]
-        for p in passports:
-            p["gigs"] = [g for g in inst_gigs if g.get("genre_key") == p["genre_key"]][-20:][::-1]
-        instruments[inst] = {"committed_at": committed_at, "passports": passports,
-                             "gig_count": len(inst_gigs)}
+        instruments[inst] = {"committed_at": committed_at, "passports": passports}
     return {
         "config": {
             "badge_requirement": cfg.get("badge_requirement") or {},
             "graded_instruments": sorted(graded),
             "instruments": list(cfg.get("instruments") or []),
-            # Career-side display names for virtuoso drill node ids.
-            "drill_labels": dict(cfg.get("drill_labels") or {}),
         },
         "instruments": instruments,
         "genres": _library_genres(),
@@ -498,72 +361,6 @@ def _passports_view():
     }
 
 
-def _gig_config():
-    cfg = _state["passports_content"].get("gig")
-    cfg = cfg if isinstance(cfg, dict) else {}
-
-    def _num(key, default, cast):
-        # Tuning data, not code: junk falls back instead of 500ing both gig
-        # endpoints, and a legitimate 0 (stakes_songs: 0) is respected.
-        val = cfg.get(key)
-        if isinstance(val, bool) or not isinstance(val, (int, float)):
-            return default
-        return cast(val)
-
-    return {
-        "min_songs": max(1, _num("min_songs", 3, int)),
-        "max_songs": max(1, _num("max_songs", 5, int)),
-        "stakes_songs": max(0, _num("stakes_songs", 2, int)),
-        "encore_accuracy": _num("encore_accuracy", 0.75, float),
-    }
-
-
-def _current_venue():
-    """Highest unlocked venue (the room you can book today)."""
-    stars_total, _, _ = _stars()
-    best = None
-    for v in _state["content"]["venues"]:
-        if stars_total >= v["star_threshold"]:
-            if best is None or v["star_threshold"] >= best["star_threshold"]:
-                best = v
-    return best
-
-
-def _fill_genre_songs(gkey, exclude, limit):
-    """Library songs of a genre to round out a gig — ANY song of the genre the
-    set hasn't already picked.
-
-    Was `_unplayed_genre_songs`, restricted to `filename NOT IN song_stats`.
-    That restriction created a hole: a song you'd played on a DIFFERENT
-    instrument's arrangement has a stats row, so it was excluded here — and it
-    lives in the played bucket for THAT instrument, not this passport's, so it
-    was excluded there too. It could never be gigged. A player with 137 metalcore
-    songs, all played on another instrument, got a 404 (reproduced). The player's
-    library is the pool; whether a song has stats on some other instrument has no
-    bearing on whether it can be in THIS gig.
-
-    Shuffled, so re-roll actually changes the set. The old version returned the
-    library's first N in table order every time, so re-roll was a no-op for any
-    set drawn from the filler (reproduced).
-
-    ponytail: full genre scan + python-side match + shuffle (a few ms at 7k
-    songs, single-user); push into SQL if propose ever feels slow.
-    """
-    db = _state["meta_db"]
-    if db is None:
-        return []
-    rows = db.conn.execute(
-        f"SELECT filename, title, artist, {_genre_expr(db)} AS g FROM songs"
-    ).fetchall()
-    pool = [
-        {"filename": filename, "title": title or filename, "artist": artist or ""}
-        for filename, title, artist, genre in rows
-        if _genre_key(genre) == gkey and filename not in exclude
-    ]
-    random.shuffle(pool)   # re-roll must vary; free per call
-    return pool[:limit]
-
-
 def _validate_pack_dir(pack_dir: Path):
     """Raise ValueError unless pack_dir holds a complete venue pack."""
     manifest_path = pack_dir / "manifest.json"
@@ -671,7 +468,7 @@ def setup(app, context):
                 "unlocked": stars_total >= v["star_threshold"],
                 "installed": _installed(v["id"]),
                 "bundled": _bundled(v["id"]),
-                "has_pack": _bundled(v["id"]) or _pack_published(v.get("pack")),
+                "has_pack": _bundled(v["id"]) or bool(v.get("pack")),
                 "download": dl,
             })
         return {
@@ -731,217 +528,22 @@ def setup(app, context):
         # Only the fields the badge check reads are kept.
         if not isinstance(body, dict) or not isinstance(body.get("byNode"), dict):
             raise HTTPException(400, "Expected a progress snapshot with byNode.")
-        # Bound the INCOMING snapshot before the merge — the gained-only merge
-        # drops junk entries, which must not become a size-guard bypass.
-        if len(json.dumps(body["byNode"])) > DRILL_SNAPSHOT_MAX_BYTES:
-            raise HTTPException(413, "Snapshot too large.")
-        gold_in = body.get("goldImprov", {})
-        if not isinstance(gold_in, dict):
-            # A relay bug must be LOUD, not a silent 200 that drops gold.
-            raise HTTPException(400, "goldImprov must be an object keyed by style id.")
-        # Keep only plausible artifacts: a dict that names its verifier —
-        # an empty {} must not mint an evidence-free gold.
-        gold_in = {k: v for k, v in gold_in.items()
-                   if isinstance(v, dict) and v.get("verifier")}
-        # Same pre-merge bound byNode gets: the gained-only merge dropping
-        # junk must not become a size-guard bypass (nor lock-held CPU burn).
-        if len(json.dumps(gold_in)) > DRILL_SNAPSHOT_MAX_BYTES:
+        snapshot = {"mode": body.get("mode"), "xp": body.get("xp"),
+                    "byNode": body["byNode"]}
+        if len(json.dumps(snapshot)) > DRILL_SNAPSHOT_MAX_BYTES:
             raise HTTPException(413, "Snapshot too large.")
         with _lock:
-            _, existing, existing_gold = _drill_by_node()
-            snapshot = {"mode": body.get("mode"), "xp": body.get("xp"),
-                        "byNode": _merge_drill_nodes(existing, body["byNode"]),
-                        "goldImprov": _merge_gold(existing_gold, gold_in)}
-            if len(json.dumps(snapshot)) > DRILL_SNAPSHOT_MAX_BYTES:
-                raise HTTPException(413, "Snapshot too large.")
             _save_json(_drill_file(), {"received_at": _now_iso(),
                                        "snapshot": snapshot})
         return {"ok": True}
 
-    @app.post(f"/api/plugins/{PLUGIN_ID}/gigs/prepare")
-    def prepare_gig(body: dict = Body(...)):
-        """Unpack every song of the set BEFORE the gig starts.
-
-        A feedpak is a zip: the first play of one pays for its extraction into
-        sloppak_cache. Inside a set that cost landed BETWEEN songs — the player
-        finished a number and then sat waiting for the next one to unpack, mid-
-        gig. A set is a known list up front, so extract it all while the player
-        is still looking at the poster.
-
-        Idempotent and cheap on a warm cache: resolve_source_dir() returns the
-        already-unpacked dir without rewriting it. Best-effort per song — one
-        bad feedpak must not block the set from starting (the play itself will
-        surface the error, exactly as it does outside a gig).
-        """
-        raw = (body or {}).get("songs")
-        # A str is iterable: without the list check, "abc" would prepare three
-        # one-character "songs". Cap the count too — this endpoint unpacks zips,
-        # so an oversized list is real work, and a setlist is a handful of songs.
-        if not isinstance(raw, list):
-            return {"ok": True, "prepared": 0, "failed": []}
-        files = [f for f in raw if isinstance(f, str) and f.strip()][:MAX_GIG_SONGS]
-        if not files:
-            return {"ok": True, "prepared": 0, "failed": []}
-
-        # .get, not []: a host that doesn't hand us the resolvers (or has no
-        # library configured) must degrade to "extract lazily, as before" — this
-        # is an optimisation, and it is never allowed to be the thing that stops
-        # a gig from starting.
-        get_dlc = context.get("get_dlc_dir")
-        get_cache = context.get("get_sloppak_cache_dir")
-        dlc_root = get_dlc() if callable(get_dlc) else None
-        cache_root = get_cache() if callable(get_cache) else None
-        if dlc_root is None or cache_root is None:
-            return {"ok": False, "prepared": 0, "failed": files, "error": "no library"}
-
-        root = Path(dlc_root)
-        prepared, failed = 0, []
-        for fn in files:
-            # CONTAINMENT FIRST. resolve_source_dir() does a bare
-            # `dlc_root / filename` with no guard, so a crafted `../..` would
-            # walk straight out of the library. Every other filename-bound
-            # handler validates through _resolve_dlc_path; so does this one.
-            safe = _resolve_dlc_path(root, fn)
-            if safe is None:
-                _state["log"].warning("career: gig pre-extract rejected unsafe path %r", fn)
-                failed.append(fn)
-                continue
-            try:
-                sloppak.resolve_source_dir(fn, root, Path(cache_root))
-                prepared += 1
-            except Exception as exc:   # noqa: BLE001 — one bad pak can't sink the set
-                _state["log"].warning("career: gig pre-extract failed for %s: %s", fn, exc)
-                failed.append(fn)
-        return {"ok": True, "prepared": prepared, "failed": failed}
-
-    @app.post(f"/api/plugins/{PLUGIN_ID}/gigs/propose")
-    def propose_gig(body: dict = Body(...)):
-        inst = str((body or {}).get("instrument") or "")
-        genre = _genre_display((body or {}).get("genre"))
-        gkey = genre.lower()
-        if inst not in (_state["passports_content"].get("instruments") or []):
-            raise HTTPException(400, "Unknown instrument.")
-        if not gkey or len(genre) > GENRE_MAX_LEN:
-            raise HTTPException(400, "Provide a genre.")
-        cfg = _gig_config()
-        try:
-            size = int((body or {}).get("size") or 4)
-        except (TypeError, ValueError):
-            raise HTTPException(400, "size must be a number.")
-        size = max(cfg["min_songs"], min(cfg["max_songs"], size))
-        played, _seconds = _played_by_instrument_genre()
-        stubs = list(played.get((inst, gkey), {}).values())
-        req = _badge_requirement(gkey, inst)
-        qualifying = [s for s in stubs if s["stars"] >= req["min_stars"]]
-        rest = [s for s in stubs if s["stars"] < req["min_stars"]]
-        # The set: mostly songs you own, plus a couple of stakes songs near
-        # the bar; a young passport fills from unplayed genre songs so the
-        # first gig is how stubs start. random per call = free re-roll.
-        random.shuffle(qualifying)
-        rest.sort(key=lambda s: -s["best_accuracy"])
-        qtaken = max(1, size - cfg["stakes_songs"])
-        picks = qualifying[:qtaken]
-        for s in rest:
-            if len(picks) >= size:
-                break
-            picks.append(s)
-        # Surplus qualifying songs backfill a short set — a mature passport
-        # with no near-bar songs left must still fill the bill. Offset by how
-        # many QUALIFYING songs were taken, not len(picks): rest's stakes
-        # additions would otherwise skip eligible qualifying songs entirely.
-        for s in qualifying[qtaken:]:
-            if len(picks) >= size:
-                break
-            picks.append(s)
-        if len(picks) < size:
-            exclude = {s["filename"] for s in picks}
-            picks.extend(_fill_genre_songs(gkey, exclude, size - len(picks)))
-        if not picks:
-            raise HTTPException(404, "No songs of this genre in the library.")
-        venue = _current_venue()
-        return {
-            "instrument": inst,
-            "genre": genre,
-            "genre_key": gkey,
-            "venue_id": venue["id"] if venue else None,
-            "venue_name": venue["name"] if venue else "",
-            "songs": [{"filename": s["filename"], "title": s.get("title") or s["filename"],
-                       "artist": s.get("artist") or ""} for s in picks[:size]],
-        }
-
-    @app.post(f"/api/plugins/{PLUGIN_ID}/gigs")
-    def log_gig(body: dict = Body(...)):
-        # Called by the runner ONLY when the set completed — an abandoned set
-        # never logs (no fail state; the gig you finished is the gig you
-        # played). Accuracies come from song_stats, freshly written by the
-        # set's own plays.
-        inst = str((body or {}).get("instrument") or "")
-        genre = _genre_display((body or {}).get("genre"))
-        gkey = genre.lower()
-        venue_id = str((body or {}).get("venue_id") or "")
-        songs = (body or {}).get("songs")
-        if inst not in (_state["passports_content"].get("instruments") or []):
-            raise HTTPException(400, "Unknown instrument.")
-        if not gkey or len(genre) > GENRE_MAX_LEN:
-            raise HTTPException(400, "Provide a genre.")
-        if venue_id and (not VENUE_ID_RE.fullmatch(venue_id) or _venue(venue_id) is None):
-            raise HTTPException(400, "Unknown venue.")
-        if (not isinstance(songs, list) or not songs or len(songs) > 8
-                or not all(isinstance(f, str) and f.strip() for f in songs)):
-            raise HTTPException(400, "songs must be 1-8 filenames.")
-        db = _state["meta_db"]
-        entries = []
-        accuracies = []
-        for filename in songs:
-            title = filename
-            accuracy = None
-            if db is not None:
-                # The NEWEST row is the set's own just-recorded play — a
-                # MAX(last_accuracy) across arrangements would happily log a
-                # stale higher score from another instrument's old session.
-                row = db.conn.execute(
-                    "SELECT last_accuracy FROM song_stats WHERE filename = ? "
-                    "ORDER BY last_played_at DESC LIMIT 1",
-                    (filename,)).fetchone()
-                if row and row[0] is not None:
-                    accuracy = round(float(row[0]), 4)
-                    accuracies.append(accuracy)
-                trow = db.conn.execute(
-                    "SELECT title FROM songs WHERE filename = ?", (filename,)).fetchone()
-                if trow and trow[0]:
-                    title = trow[0]
-            entries.append({"filename": filename, "title": title, "accuracy": accuracy})
-        # Encore needs the WHOLE set scored at the bar — one scored song must
-        # not earn an encore for a set that was 4/5 unheard.
-        encore = (len(accuracies) == len(songs) and
-                  sum(accuracies) / len(accuracies) >= _gig_config()["encore_accuracy"])
-        gig = {
-            "at": _now_iso(),
-            "venue_id": venue_id or None,
-            "instrument": inst,
-            "genre": genre,
-            "genre_key": gkey,
-            "songs": entries,
-            "encore": encore,
-        }
-        with _lock:
-            st = _career_state()
-            if not isinstance(st.get("gigs"), list):
-                st["gigs"] = []
-            st["gigs"].append(gig)
-            # ponytail: hard cap — nothing reads past the last 20 per
-            # passport; the state file must not grow (and export) forever.
-            st["gigs"] = st["gigs"][-500:]
-            _save_json(_state_file(), st)
-        return {"ok": True, "gig": gig}
-
     @app.post(f"/api/plugins/{PLUGIN_ID}/packs/{{venue_id}}/download")
     def start_download(venue_id: str):
         venue = _venue(venue_id) if VENUE_ID_RE.fullmatch(venue_id) else None
         if venue is None:
             raise HTTPException(404, "Unknown venue.")
         pack = venue.get("pack")
-        if not _pack_published(pack):
+        if not pack:
             raise HTTPException(404, "No pack published for this venue yet.")
         stars_total, _, _ = _stars()
         if stars_total < venue["star_threshold"]:

plugins/career/screen.html

@@ -29,7 +29,6 @@
     <div id="career-tab-passports" class="hidden" role="tabpanel" aria-labelledby="career-tab-btn-passports">
         <p class="text-sm text-gray-400 mb-4">Commit to an instrument, pick a genre, and stamp your way to its badge — five ★★ songs mint a Bronze. Your passport wall is who you are as a musician.</p>
         <div id="pp-instruments" class="pp-instruments"></div>
-        <div id="pp-closest" class="mt-4"></div>
         <div id="pp-shelf-wrap" class="mt-5">
             <div id="pp-shelf" class="pp-shelf"></div>
         </div>

plugins/career/settings.html

@@ -8,25 +8,3 @@
      Virtuoso plugin reports. These ride along in
      <em>Settings → Export</em> automatically.</p>
 </div>
-<hr class="border-gray-800 my-3">
-<div class="space-y-3 text-sm">
-    <label class="flex items-center justify-between gap-4">
-        <span>
-            <span class="text-gray-200 font-medium">Crowd sound reactions</span>
-            <span class="block text-xs text-gray-500">Cheers when the crowd's mood rises, boos when it drops. Uses each venue's own recordings.</span>
-        </span>
-        <input type="checkbox" id="career-sfx-toggle" class="accent-cyan-500 w-4 h-4">
-    </label>
-</div>
-<script>
-(function () {
-    'use strict';
-    var KEY = 'feedBack-venue-crowd-sfx';
-    var box = document.getElementById('career-sfx-toggle');
-    if (!box) return;
-    try { box.checked = localStorage.getItem(KEY) === 'on'; } catch (e) { /* ok */ }
-    box.addEventListener('change', function () {
-        try { localStorage.setItem(KEY, box.checked ? 'on' : 'off'); } catch (e) { /* ok */ }
-    });
-}());
-</script>

plugins/career/tests/passports.test.js

@@ -88,33 +88,6 @@ test('detectNewBadges notifies once per badge, never after it is seen', () => {
     assert.equal(w2.notifications.length, 0);
 });
 
-test('a new badge triggers the crowd celebrate() exactly once', () => {
-    const w = load();
-    let calls = 0;
-    w.v3VenueCrowd = { celebrate: () => { calls += 1; } };
-    const view = { instruments: { guitar: { passports: [
-        { genre_key: 'blues', genre: 'Blues', badge: 'earned' }] } } };
-    w.__careerPassportTest.detectNewBadges(view);
-    assert.equal(calls, 1);
-    // Same session, same view: no re-celebration.
-    w.__careerPassportTest.detectNewBadges(view);
-    assert.equal(calls, 1);
-});
-
-test('ceremony degrades when the crowd layer is absent or throws', () => {
-    const w = load();
-    const view = { instruments: { guitar: { passports: [
-        { genre_key: 'blues', genre: 'Blues', badge: 'earned' }] } } };
-    // No v3VenueCrowd at all (already exercised elsewhere, explicit here).
-    w.__careerPassportTest.detectNewBadges(view);
-    assert.equal(w.notifications.length, 1);
-    // celebrate() throwing must not break detection.
-    const w2 = load();
-    w2.v3VenueCrowd = { celebrate: () => { throw new Error('no pack'); } };
-    w2.__careerPassportTest.detectNewBadges(view);
-    assert.equal(w2.notifications.length, 1);
-});
-
 test('seenBadges tolerates corrupt stored values', () => {
     for (const bad of ['null', '[1,2]', '"x"', '{{{']) {
         const w = load({ 'feedBack-career-badges-seen': bad });
@@ -126,124 +99,3 @@ test('seenBadges tolerates corrupt stored values', () => {
         assert.equal(w.notifications.length, 1, `stored ${bad}`);
     }
 });
-
-test('fmtHours: silent under a minute, minutes under an hour, tenths after', () => {
-    const { fmtHours } = load().__careerPassportTest;
-    assert.equal(fmtHours(0), '');
-    assert.equal(fmtHours(59), '');
-    assert.equal(fmtHours(60), '1 min');
-    assert.equal(fmtHours(1800), '30 min');
-    assert.equal(fmtHours(3600), '1 h');
-    assert.equal(fmtHours(51120), '14.2 h');
-    assert.equal(fmtHours(null), '');
-    assert.equal(fmtHours('junk'), '');
-});
-
-test('ppFillFraction: song progress toward the bar, in-progress only', () => {
-    const { ppFillFraction } = load().__careerPassportTest;
-    const p = (badge, q, songs) => ({ badge, qualifying_count: q, requirement: { songs } });
-    assert.equal(ppFillFraction(p('in_progress', 3, 5)), 0.6);
-    assert.equal(ppFillFraction(p('in_progress', 0, 5)), 0);
-    assert.equal(ppFillFraction(p('in_progress', 7, 5)), 1);   // clamped
-    assert.equal(ppFillFraction(p('earned', 5, 5)), 0);        // no fill once earned
-    assert.equal(ppFillFraction(p('shown_not_judged', 3, 5)), 0);
-    assert.equal(ppFillFraction(p('in_progress', 3, 0)), 0);   // no bar → no fill
-    assert.equal(ppFillFraction(null), 0);
-});
-
-test('careerTotals / wall + dash card stay absent without commitment', () => {
-    const w = load();
-    const t = w.__careerPassportTest;
-    // No _pp at all → null; committed-less view → null (absent-not-empty).
-    assert.equal(t.careerTotals(), null);
-    t.setView({ config: { instruments: ['guitar'] },
-        instruments: { guitar: { committed_at: null, passports: [] } } });
-    assert.equal(t.careerTotals(), null);
-    // Committed but zero passports opened: still absent (no zero-wall).
-    t.setView({ config: { instruments: ['guitar'] },
-        instruments: { guitar: { committed_at: 'x', passports: [] } } });
-    assert.equal(t.careerTotals(), null);
-    // Committed with an earned badge + hours → totals aggregate.
-    t.setView({ config: { instruments: ['guitar', 'bass'] },
-        instruments: {
-            guitar: { committed_at: 'x', passports: [
-                { badge: 'earned', seconds_total: 3600, genre: 'Blues', genre_key: 'blues' },
-                { badge: 'in_progress', seconds_total: 120, genre: 'Funk', genre_key: 'funk',
-                  qualifying_count: 4, requirement: { songs: 5, min_stars: 2 } }] },
-            bass: { committed_at: null, passports: [] },
-        } });
-    const totals = t.careerTotals();
-    assert.equal(totals.badges, 1);
-    assert.equal(totals.seconds, 3720);
-    assert.equal(totals.walls.length, 1);
-});
-
-test('gig runner lifecycle: advance on ended, abandon on dead-queue stop', () => {
-    const w = load();
-    const t = w.__careerPassportTest;
-    let remaining = 1;
-    w.feedBack = { playQueue: { remaining: () => remaining, active: () => remaining > 0 } };
-    t.setGigRun({
-        songs: [{ filename: 'a', title: 'A' }, { filename: 'b', title: 'B' }],
-        venue_id: null, genre: 'Soul', genre_key: 'soul', instrument: 'guitar', idx: 0,
-    });
-    // First song ends, one remains → the strip advances, no completion.
-    t.onGigSongEnded();
-    assert.equal(t.getGigRun().idx, 1);
-    // Stop while the queue is still active (end-of-song teardown) → run survives.
-    t.onGigSongStop();
-    assert.notEqual(t.getGigRun(), null);
-    // User quits: queue cleared → stop with a dead queue abandons (no log).
-    remaining = 0;
-    t.onGigSongStop();
-    assert.equal(t.getGigRun(), null);
-});
-
-test('a gold upgrade notifies even when the bronze moment was already seen', () => {
-    // Bronze seen under the legacy un-suffixed id; the badge then turns gold.
-    const w = load({ 'feedBack-career-badges-seen': '{"guitar/blues":1}' });
-    const t = w.__careerPassportTest;
-    const view = { instruments: { guitar: { passports: [
-        { genre_key: 'blues', genre: 'Blues', badge: 'gold' }] } } };
-    t.detectNewBadges(view);
-    assert.equal(w.notifications.length, 1);
-    assert.match(w.notifications[0].title, /Gold/);
-    // Same session: no duplicate.
-    t.detectNewBadges(view);
-    assert.equal(w.notifications.length, 1);
-    // Gold slam seen → fresh session stays silent.
-    t.markBadgeSeen('guitar', 'blues', 'gold');
-    const w2 = load({ 'feedBack-career-badges-seen': JSON.stringify(t.seenBadges()) });
-    w2.__careerPassportTest.detectNewBadges(view);
-    assert.equal(w2.notifications.length, 0);
-});
-
-test('a gold slam marks the bronze moment seen too — never both ceremonies', () => {
-    const w = load();
-    const t = w.__careerPassportTest;
-    t.markBadgeSeen('guitar', 'blues', 'gold');
-    const seen = JSON.parse(JSON.stringify(t.seenBadges()));
-    assert.equal(seen['guitar/blues@gold'], 1);
-    assert.equal(seen['guitar/blues'], 1);
-    // A later view where the badge reads 'earned' (e.g. gold state lost
-    // server-side) must not replay the bronze ceremony.
-    const view = { instruments: { guitar: { passports: [
-        { genre_key: 'blues', genre: 'Blues', badge: 'earned' }] } } };
-    const w2 = load({ 'feedBack-career-badges-seen': JSON.stringify(seen) });
-    w2.__careerPassportTest.detectNewBadges(view);
-    assert.equal(w2.notifications.length, 0);
-});
-
-test('careerTotals counts gold badges on the wall', () => {
-    const t = load().__careerPassportTest;
-    t.setView({
-        config: { instruments: ['guitar'] },
-        instruments: { guitar: { committed_at: 1, gig_count: 0, passports: [
-            { genre_key: 'blues', genre: 'Blues', badge: 'gold', seconds_total: 60 },
-            { genre_key: 'funk', genre: 'Funk', badge: 'in_progress', seconds_total: 0 },
-        ] } },
-    });
-    const totals = t.careerTotals();
-    assert.equal(totals.badges, 1);
-    assert.equal(totals.walls[0].earned[0].badge, 'gold');
-});

plugins/career/venue-packs/arena/manifest.json

@@ -1,8 +0,0 @@
-{
-    "venue": "arena",
-    "version": 1,
-    "loops": {"bored": "bored.mp4", "neutral": "neutral.mp4", "engaged": "engaged.mp4", "ecstatic": "ecstatic.mp4"},
-    "stingers": {"clap": "clap.mp4", "cheer": "cheer.mp4"},
-    "intro": {"video": "intro.mp4", "audio": "arena-ambience.mp3"},
-    "sfx": {"up": "sfx-up.mp3", "down": "sfx-down.mp3"}
-}

plugins/career/venue-packs/bar/manifest.json

@@ -14,9 +14,5 @@
     "intro": {
         "video": "intro.mp4",
         "audio": "bar-ambience.mp3"
-    },
-    "sfx": {
-        "up": "sfx-up.mp3",
-        "down": "sfx-down.mp3"
     }
 }

plugins/career/venue-packs/club/manifest.json

@@ -1,8 +0,0 @@
-{
-    "venue": "club",
-    "version": 1,
-    "loops": {"bored": "bored.mp4", "neutral": "neutral.mp4", "engaged": "engaged.mp4", "ecstatic": "ecstatic.mp4"},
-    "stingers": {"clap": "clap.mp4", "cheer": "cheer.mp4"},
-    "intro": {"video": "intro.mp4", "audio": "club-ambience.mp3"},
-    "sfx": {"up": "sfx-up.mp3", "down": "sfx-down.mp3"}
-}

plugins/career/venues.json

@@ -17,22 +17,14 @@
             "name": "Velvet Room",
             "description": "A proper club stage. People actually came to hear you.",
             "star_threshold": 50,
-            "pack": {
-                "url": "https://github.com/got-feedBack/feedBack/releases/download/venue-club-v1/club-pack-v1.zip",
-                "sha256": "0000000000000000000000000000000000000000000000000000000000000000",
-                "bytes": 0
-            }
+            "pack": null
         },
         {
             "id": "arena",
             "name": "Feedback Arena",
             "description": "Ten thousand seats. Try not to think about it.",
             "star_threshold": 150,
-            "pack": {
-                "url": "https://github.com/got-feedBack/feedBack/releases/download/venue-arena-v1/arena-pack-v1.zip",
-                "sha256": "8898c7912c84123559ecfd8b0afd3be19da9a0a4b04aa9dbb5aa1e7f4e3e1669",
-                "bytes": 351284599
-            }
+            "pack": null
         }
     ]
 }

plugins/folder_library/screen.js

@@ -878,146 +878,6 @@ function createFolderSurface(cfg) {
     var _dragRafId         = null;
     var _DRAG_THRESH = 5, _DRAG_ZONE = 150, _DRAG_SPEED = 50;
 
-    // ── Windowed song lists ─────────────────────────────────────────────
-    // A song list used to render EVERY song it held. On a flat 50,944-song
-    // library that is one <div> with 50,938 children and ~1.3 MILLION DOM nodes
-    // (~25 per row) — ~4.2 GB of renderer RSS, for a screen the user may not
-    // even be looking at. It also poisons unrelated code: any
-    // `document.querySelector` miss anywhere in the app must walk that whole
-    // tree, which is how song_preview's per-frame menu check ended up eating
-    // ~50% of the renderer and dropping the app to 2.7 fps (feedBack#965).
-    //
-    // So render only what is on screen. Rows are uniform height (and grid cards
-    // uniform size), so the window is pure arithmetic — no per-row observers.
-    // Off-window rows are represented by padding on the list itself rather than
-    // spacer elements: a spacer <div> would become a grid ITEM in grid view and
-    // shift the columns, whereas padding works identically for both layouts.
-    var VIRTUAL_MIN = 200;   // below this, render everything — no behaviour change
-    var VIRTUAL_BUFFER = 6;  // rows kept rendered above/below the viewport
-    var _virtualCleanups = [];
-    var _virtualLists = [];   // repaint fns, one per live windowed list
-
-    // Which slice of the list is on screen. Pure arithmetic — kept separate from
-    // the DOM so it can be tested directly (see tests/virtual_list.test.js).
-    //
-    //   top   : list's offset relative to the scroller viewport's top. NEGATIVE
-    //           once the user has scrolled the list's start above the fold.
-    //   rows  : total ROWS (grid packs `perRow` songs into one row; list view is 1)
-    //
-    // Returns the song index range [start, end) to render, plus how many ROWS of
-    // padding stand in for the songs above and below it.
-    function _visibleWindow(top, viewportH, itemH, perRow, rows, total) {
-        if (!(itemH > 0) || !(rows > 0)) return { start: 0, end: total, padRowsTop: 0, padRowsBottom: 0 };
-        var firstRow = Math.max(0, Math.floor(-top / itemH) - VIRTUAL_BUFFER);
-        var lastRow = Math.min(rows, Math.ceil((-top + viewportH) / itemH) + VIRTUAL_BUFFER);
-        // Scrolled entirely past the list (either direction): keep one row alive
-        // rather than emptying it, so the padding math stays anchored.
-        if (lastRow <= firstRow) {
-            firstRow = Math.min(firstRow, rows - 1);
-            lastRow = firstRow + 1;
-        }
-        return {
-            start: firstRow * perRow,
-            end: Math.min(total, lastRow * perRow),
-            padRowsTop: firstRow,
-            padRowsBottom: Math.max(0, rows - lastRow),
-        };
-    }
-
-    function _clearVirtualLists() {
-        _virtualCleanups.forEach(function (fn) { try { fn(); } catch (_) {} });
-        _virtualCleanups = [];
-        _virtualLists = [];
-    }
-
-    // Fill `list` with `songs`, windowed when the list is big enough to matter.
-    // `make(song)` builds one row/card.
-    function _fillSongList(list, songs, make) {
-        var sorted = _sortSongs(songs);
-        if (sorted.length <= VIRTUAL_MIN) {
-            sorted.forEach(function (s) { list.appendChild(make(s)); });
-            return;
-        }
-
-        var scroller = _getScrollEl();
-        var basePadTop = parseFloat(window.getComputedStyle(list).paddingTop) || 0;
-        var basePadBot = parseFloat(window.getComputedStyle(list).paddingBottom) || 0;
-
-        // Measure one real row once — no hardcoded row height to drift out of
-        // sync with the CSS. (The list is shown before it is populated, so this
-        // measures a laid-out row, not a zero-height one.)
-        var probe = make(sorted[0]);
-        probe.style.visibility = 'hidden';
-        list.appendChild(probe);
-        var probeRect = probe.getBoundingClientRect();
-        var rowH = probeRect.height || 44;
-        var cardW = probeRect.width || 150;
-        list.removeChild(probe);
-
-        var GRID_GAP = 12;   // matches the grid's `gap:12px`
-        var raf = 0, lastStart = -1, lastEnd = -1;
-
-        // Recomputed on EVERY paint, not captured once: a window resize changes
-        // the grid's column count, and therefore the row count and the height of
-        // the padding standing in for off-window rows. paint() runs on resize, so
-        // stale metrics would slice the wrong songs and mis-size the list.
-        function metrics() {
-            var perRow = 1, itemH = rowH;
-            if (_view === 'grid') {
-                perRow = Math.max(1, Math.floor((list.clientWidth + GRID_GAP) / (cardW + GRID_GAP)));
-                itemH = rowH + GRID_GAP;
-            }
-            return { perRow: perRow, itemH: itemH, rows: Math.ceil(sorted.length / perRow) };
-        }
-
-        function paint() {
-            raf = 0;
-            // Collapsed (display:none) or detached: nothing to paint, and don't
-            // pay for layout on every scroll tick of a section nobody can see.
-            // Forget the last window so re-showing repaints from scratch against
-            // the new position rather than short-circuiting on a stale memo.
-            if (!list.isConnected || list.offsetParent === null) {
-                lastStart = -1; lastEnd = -1;
-                return;
-            }
-            var m = metrics();
-            // Where the list sits relative to the scroller's viewport.
-            var top = list.getBoundingClientRect().top - scroller.getBoundingClientRect().top;
-            var vh = scroller.clientHeight || window.innerHeight;
-            var w = _visibleWindow(top, vh, m.itemH, m.perRow, m.rows, sorted.length);
-            if (w.start === lastStart && w.end === lastEnd) return;   // nothing moved
-            lastStart = w.start; lastEnd = w.end;
-
-            var frag = document.createDocumentFragment();
-            for (var i = w.start; i < w.end; i++) frag.appendChild(make(sorted[i]));
-            list.textContent = '';
-            list.style.paddingTop = (basePadTop + w.padRowsTop * m.itemH) + 'px';
-            list.style.paddingBottom = (basePadBot + w.padRowsBottom * m.itemH) + 'px';
-            list.appendChild(frag);
-        }
-        function schedule() { if (!raf) raf = window.requestAnimationFrame(paint); }
-
-        scroller.addEventListener('scroll', schedule, { passive: true });
-        window.addEventListener('resize', schedule);
-        // Expanding or collapsing ANY section moves every list below it. Those
-        // lists' windows are computed from their position, so they must repaint
-        // too — otherwise they keep the window from their old position and show
-        // blank padding where songs should be until the user happens to scroll.
-        _virtualLists.push(schedule);
-        _virtualCleanups.push(function () {
-            scroller.removeEventListener('scroll', schedule);
-            window.removeEventListener('resize', schedule);
-            if (raf) window.cancelAnimationFrame(raf);
-        });
-        paint();
-    }
-
-    // Re-window every live list — call after anything that can move them
-    // vertically (a folder expanding/collapsing, a section being shown).
-    function _repaintVirtualLists() {
-        _virtualLists.forEach(function (fn) { try { fn(); } catch (_) {} });
-    }
-
     function _getScrollEl() {
         var el = _treeEl();
         while (el && el !== document.documentElement) {
@@ -1299,8 +1159,8 @@ function createFolderSurface(cfg) {
 
         var _listPopulated = open;
         function _populateList() {
-            _fillSongList(list, folder.songs, function (s) {
-                return _view === 'grid' ? _songCard(s, folder.path) : _songRow(s, folder.path);
+            _sortSongs(folder.songs).forEach(function (s) {
+                list.appendChild(_view === 'grid' ? _songCard(s, folder.path) : _songRow(s, folder.path));
             });
             (folder.children || []).forEach(function (child) {
                 childrenWrap.appendChild(_folderSection(child, depth + 1));
@@ -1335,18 +1195,12 @@ function createFolderSurface(cfg) {
         hdr.addEventListener('click', function () {
             if (_query()) return;
             var nowOpen = content.style.display === 'none';
-            // Show BEFORE populating: a windowed list measures a real row and the
-            // scroller viewport, and both are zero while display:none.
-            content.style.display = nowOpen ? '' : 'none';
             if (nowOpen && !_listPopulated) { _populateList(); _listPopulated = true; }
+            content.style.display = nowOpen ? '' : 'none';
             chev.style.transform  = nowOpen ? 'rotate(90deg)' : '';
             if (nowOpen) _openFolders.add(folder.path);
             else         _openFolders.delete(folder.path);
             _storeJSON('open', [..._openFolders]);
-            // This toggle moved everything below it — re-window the other lists,
-            // and re-window THIS one if it was already populated (its saved
-            // window was computed at its old position).
-            _repaintVirtualLists();
         });
 
         wrap.appendChild(hdr); wrap.appendChild(content);
@@ -1391,8 +1245,8 @@ function createFolderSurface(cfg) {
         }
         var _populated = _unsortedOpen;
         function _populate() {
-            _fillSongList(list, songs, function (s) {
-                return _view === 'grid' ? _songCard(s, '') : _songRow(s, '');
+            _sortSongs(songs).forEach(function (s) {
+                list.appendChild(_view === 'grid' ? _songCard(s, '') : _songRow(s, ''));
             });
         }
         if (_unsortedOpen) { _populate(); } else { list.style.display = 'none'; }
@@ -1401,12 +1255,10 @@ function createFolderSurface(cfg) {
         hdr.addEventListener('click', function () {
             if (_query()) return;
             _unsortedOpen = list.style.display === 'none';
-            // Show BEFORE populating — see the folder toggle above.
-            list.style.display = _unsortedOpen ? (_view === 'grid' ? 'grid' : '') : 'none';
             if (_unsortedOpen && !_populated) { _populate(); _populated = true; }
+            list.style.display = _unsortedOpen ? (_view === 'grid' ? 'grid' : '') : 'none';
             chev.style.transform = _unsortedOpen ? 'rotate(90deg)' : '';
             _store(cfg.unsortedKey, String(_unsortedOpen));
-            _repaintVirtualLists();   // this toggle moved every list below it
         });
 
         wrap.appendChild(hdr); wrap.appendChild(list);
@@ -1488,10 +1340,6 @@ function createFolderSurface(cfg) {
     // ── Render ──────────────────────────────────────────────────────────
     function _render() {
         _hoveredFolder = null; // DOM is rebuilt; discard any stale reference
-        // Drop the scroll listeners of the previous render's windowed lists —
-        // their `list` nodes are about to be detached, and a surviving listener
-        // would keep painting into orphaned DOM (and leak on every re-render).
-        _clearVirtualLists();
         var treeEl = _treeEl();
         if (!treeEl) return;
         var data = _filtered();
@@ -1603,7 +1451,6 @@ function createFolderSurface(cfg) {
 
     // ── Unload (lib surface) ────────────────────────────────────────────
     function _unload() {
-        _clearVirtualLists();   // don't leave scroll listeners behind on teardown
         if (!cfg.searchInputId) return;
         var el = _el(cfg.searchInputId);
         if (el) el.style.maxWidth = '';
@@ -1707,8 +1554,6 @@ function createFolderSurface(cfg) {
         init: _init,
         onScreenChanged: _onScreenChanged,
         render: _render,
-        // Pure window arithmetic, exposed for tests (no DOM needed).
-        __test: { visibleWindow: _visibleWindow, VIRTUAL_MIN: VIRTUAL_MIN, VIRTUAL_BUFFER: VIRTUAL_BUFFER },
     };
 }
 
@@ -1811,7 +1656,6 @@ if (!window.__folderLibraryLib) {
     window.folderLibrary = {
         load:   function (force) { return _lib.load(force); },
         unload: function ()      { _lib.unload(); },
-        __test: _lib.__test,
     };
 
     // Auto-load if folder view was already active when this script was injected.

plugins/folder_library/tests/virtual_list.test.js

@@ -1,165 +0,0 @@
-// Windowed song lists (feedBack#965).
-//
-// A song list used to render EVERY song. On a flat 50,944-song library that is
-// one div with 50,938 children and ~1.3 MILLION DOM nodes (~25 per row) —
-// ~4.2 GB of renderer RSS, for a screen the user may not even be looking at. It
-// also poisoned unrelated code: any `document.querySelector` miss anywhere in
-// the app had to walk that whole tree.
-//
-// _visibleWindow is the arithmetic that decides which slice is on screen. If it
-// is wrong the list silently shows the wrong songs, or scrolls to the wrong
-// place, so it is tested directly — the DOM glue around it is not the risky bit.
-
-const { test } = require('node:test');
-const assert = require('node:assert/strict');
-const fs = require('node:fs');
-const path = require('node:path');
-const vm = require('node:vm');
-
-function load() {
-    const window = {
-        console,
-        document: {
-            readyState: 'complete',
-            addEventListener() {},
-            getElementById() { return null; },
-            querySelector() { return null; },
-            querySelectorAll() { return []; },
-            createElement() { return { style: {}, classList: { add() {}, remove() {}, contains() { return false; } }, addEventListener() {}, appendChild() {} }; },
-        },
-        addEventListener() {},
-        localStorage: { getItem() { return null; }, setItem() {} },
-        performance: { now: () => 0 },
-        setInterval() { return 0; },
-        clearInterval() {},
-        requestAnimationFrame() { return 0; },
-        cancelAnimationFrame() {},
-        getComputedStyle() { return { overflowY: 'visible', paddingTop: '0px', paddingBottom: '0px' }; },
-        innerHeight: 800,
-    };
-    window.window = window;
-    window.globalThis = window;
-    const ctx = vm.createContext(window);
-    vm.runInContext(fs.readFileSync(path.join(__dirname, '..', 'screen.js'), 'utf8'), ctx, { filename: 'screen.js' });
-    assert.ok(window.folderLibrary && window.folderLibrary.__test, 'plugin must expose __test');
-    return window.folderLibrary.__test;
-}
-
-const { visibleWindow, VIRTUAL_BUFFER, VIRTUAL_MIN } = load();
-
-// A flat 50k library in list view: 1 song per row, 44px rows, 800px viewport.
-const ROW = 44;
-const VH = 800;
-const TOTAL = 50938;
-
-test('the whole point: a 50k list renders a bounded window, not 50k rows', () => {
-    const w = visibleWindow(0, VH, ROW, 1, TOTAL, TOTAL);
-    const rendered = w.end - w.start;
-    assert.ok(rendered < 60, `expected a small window, got ${rendered} rows`);
-    // ~18 rows fit in 800px, plus buffer above and below.
-    assert.ok(rendered >= Math.ceil(VH / ROW), 'must at least fill the viewport');
-});
-
-test('at the top: starts at 0, all remaining rows are bottom padding', () => {
-    const w = visibleWindow(0, VH, ROW, 1, TOTAL, TOTAL);
-    assert.equal(w.start, 0);
-    assert.equal(w.padRowsTop, 0);
-    assert.equal(w.padRowsBottom, TOTAL - w.end);
-});
-
-test('scrolled into the middle: window tracks the scroll, padding adds up', () => {
-    const scrolled = 10000 * ROW;                 // row 10,000 at the fold
-    const w = visibleWindow(-scrolled, VH, ROW, 1, TOTAL, TOTAL);
-    assert.equal(w.start, (10000 - VIRTUAL_BUFFER) * 1);
-    assert.ok(w.end > w.start);
-    // The invariant that keeps the scrollbar honest: padding rows + rendered
-    // rows must account for every song, or the list changes height as you scroll.
-    assert.equal(w.padRowsTop + (w.end - w.start) + w.padRowsBottom, TOTAL);
-});
-
-test('at the very bottom: no bottom padding, end lands on the last song', () => {
-    const rows = TOTAL;
-    const scrolled = rows * ROW - VH;             // scrolled to the end
-    const w = visibleWindow(-scrolled, VH, ROW, 1, rows, TOTAL);
-    assert.equal(w.end, TOTAL);
-    assert.equal(w.padRowsBottom, 0);
-    assert.equal(w.padRowsTop + (w.end - w.start), TOTAL);
-});
-
-test('grid view: perRow songs collapse into one row', () => {
-    const perRow = 6;
-    const rows = Math.ceil(TOTAL / perRow);
-    const w = visibleWindow(0, VH, 190, perRow, rows, TOTAL);
-    assert.equal(w.start, 0);
-    assert.equal(w.start % perRow, 0, 'a window must start on a row boundary');
-    assert.ok(w.end <= TOTAL);
-    assert.ok((w.end - w.start) < 200, 'grid window must stay bounded');
-});
-
-test('scrolled far past the list: keeps one row, never a negative window', () => {
-    const w = visibleWindow(-99999999, VH, ROW, 1, TOTAL, TOTAL);
-    assert.ok(w.end > w.start, 'window must never invert');
-    assert.ok(w.start >= 0 && w.end <= TOTAL);
-    assert.equal(w.padRowsTop + (w.end - w.start) + w.padRowsBottom, TOTAL);
-});
-
-test('list not yet scrolled to (below the fold): still yields a valid window', () => {
-    const w = visibleWindow(5000, VH, ROW, 1, TOTAL, TOTAL);   // list starts below viewport
-    assert.equal(w.start, 0);
-    assert.ok(w.end > 0);
-});
-
-test('degenerate inputs fall back to rendering everything, never to a broken window', () => {
-    // Measured height of 0 (e.g. list still display:none) must not divide by zero
-    // and must not silently render an empty list.
-    const w = visibleWindow(0, VH, 0, 1, TOTAL, TOTAL);
-    assert.equal(w.start, 0);
-    assert.equal(w.end, TOTAL);
-    assert.equal(w.padRowsTop, 0);
-    assert.equal(w.padRowsBottom, 0);
-});
-
-test('small lists are below the virtualization threshold', () => {
-    assert.ok(VIRTUAL_MIN >= 100, 'threshold must be high enough that normal folders are untouched');
-});
-
-// ── the grid must be re-measured when the window resizes (CodeRabbit, #967) ──
-// perRow and rows were originally captured once at fill time. paint() also runs
-// on resize, so a narrower/wider window changed the column count while the
-// window maths still used the OLD one — slicing the wrong songs and mis-sizing
-// the padding. These pin that the geometry is a function of perRow, so a stale
-// perRow cannot silently survive.
-
-test('resizing the grid to fewer columns re-windows against the new row count', () => {
-    const total = 10000;
-    const wide = visibleWindow(0, VH, 190, 6, Math.ceil(total / 6), total);
-    const narrow = visibleWindow(0, VH, 190, 3, Math.ceil(total / 3), total);
-
-    // Same viewport, half the columns -> about half as many songs on screen.
-    assert.ok(narrow.end < wide.end, 'fewer columns must render fewer songs per screen');
-    // ...and the total must still add up, or the scrollbar lies after a resize.
-    for (const [w, perRow] of [[wide, 6], [narrow, 3]]) {
-        const rows = Math.ceil(total / perRow);
-        assert.equal(w.padRowsTop + Math.ceil((w.end - w.start) / perRow) + w.padRowsBottom, rows,
-            `rows must account for every song at perRow=${perRow}`);
-    }
-});
-
-test('a stale perRow would break the total-height invariant (the bug)', () => {
-    const total = 10000;
-    // Grid re-laid out to 3 columns, but windowed with the OLD perRow of 6:
-    // the row count no longer matches the geometry, and the padding is wrong.
-    const stalePerRow = 6, actualRows = Math.ceil(total / 3);
-    const bad = visibleWindow(0, VH, 190, stalePerRow, actualRows, total);
-    const accounted = bad.padRowsTop + Math.ceil((bad.end - bad.start) / 3) + bad.padRowsBottom;
-    assert.notEqual(accounted, actualRows,
-        'this asserts the FAILURE mode: mismatched perRow/rows must not silently look correct — ' +
-        'metrics() recomputes both together on every paint so this cannot happen in practice');
-});
-
-test('scrolled grid window always starts on a row boundary', () => {
-    const total = 10000, perRow = 4;
-    const rows = Math.ceil(total / perRow);
-    const w = visibleWindow(-5000, VH, 190, perRow, rows, total);
-    assert.equal(w.start % perRow, 0, 'a partial row would shift every card in the grid');
-});

plugins/highway_3d/CLAUDE.md

@@ -155,7 +155,7 @@ Every per-frame renderer call receives a `bundle` from feedBack core. Fields use
 - `lefty` — display flag consumed by this renderer from `bundle.lefty`. Captured into `_leftyCached` before each frame so `xFret()`, `xFretMid()`, `boardSpanX()`, board geometry, note placement, and the camera shoulder offset mirror the fret axis for left-handed mode. A runtime lefty flip rebuilds board state and mirrors `curX`/`tgtX` plus the lookahead camera X cache so the camera does not drift across the neck.
 - `getNoteState(note, chartTime)` — feedBack#254; per-note judgment from a scorer (note_detect). Captured each frame into `_ndGetNoteState` at the top of `update()` and consulted in `drawNote()` AFTER the event-driven `_ndHitMarks`/`_ndMissMarks` lookup AND over the proximity-based `hit` heuristic, both of which it overrides when it has a verdict: `'hit'`/`'active'` → `mGlow[s]` outline (bright string-tinted, *not* green) + `mGlow[s]` body + `mGlow[s]` sustain trail + a queue entry for `drawNotedetectSizzle` (so a held sustain keeps glowing/sparkling as long as the provider keeps returning `'active'`); `'miss'` → `mMissOutline` and `_showHit = false` (suppresses the bright body even if the note is near the line). Called with the note's chart time (`n.t`), which is how note_detect keys its `noteResults` map — *not* `now`. Returns null on cores without the API or songs with no scorer — then the event path / `hit` heuristic drive feedback for older note_detect builds. **notedetect ≥1.13 object verdicts additionally carry `{ points, mult, popKey }`** (game-scoring layer): `points` is the note's awarded score, `mult` the multiplier tier it landed at, and `popKey` a dedup key — chord members all return the chord-level judgment's key so a chord pops once, not once per gem. Consumed by the score-pop spawn in `drawNote()` (see Score FX below); all three are absent on older notedetect builds, so guard with `!== undefined`.
 
-`tuning` and `capo` feed only the nut's open-string pitch labels. They prefer the bundle's effective values; `songInfo` remains the original metadata fallback. Note placement never reads them.
+`tuning` and `capo` aren't consumed by this plugin.
 
 Core reuses the bundle OBJECT across frames (mutated in place); never cache it or compare its identity between frames — field values are only valid for the current draw call. Field-identity caches on ARRAY fields (this plugin's `_mergeCacheChordsRef === bundle.chords` etc.) remain valid: arrays still swap reference when chart data changes. Core also exposes `bundle.lowerBoundT(arr, time)` (lower-bound on `.t`, notes/chords) and `bundle.lowerBoundTime(arr, time)` (on `.time`, beats/anchors/sections) — prefer these over the local `lowerBoundT` helper when a downlevel-host fallback isn't needed.
 

plugins/highway_3d/plugin.json

@@ -1,7 +1,7 @@
 {
     "id": "highway_3d",
     "name": "3D Highway",
-    "version": "3.34.1",
+    "version": "3.31.5",
     "type": "visualization",
     "bundled": true,
     "script": "screen.js",

plugins/highway_3d/tests/background_control.test.js

@@ -1,543 +0,0 @@
-// Player-chrome background control.
-//
-// The control mounts a Background picker (style / Reactive / Intensity) into
-// the player's Plugin Controls popover so the background can be changed
-// mid-song. Two things about it are easy to get wrong and invisible when they
-// are:
-//
-//   * It is REFCOUNTED. Several renderer instances can be live at once (a
-//     splitscreen host creates one per panel), but the settings it writes are
-//     global — N controls would be N ways to set one value, and a leaked
-//     refcount pins a dead control in the UI. The multi-instance behaviour is
-//     exercised here with stubbed instances; it is NOT verified against a real
-//     splitscreen session, whose visualizer does not currently work.
-//   * It GREYS OUT controls the active style ignores. Not every background
-//     style reads `intensity`, and none of them read audio bands under
-//     Butterchurn, so a live-looking knob that does nothing is a real bug.
-//
-// screen.js is a single ~16k-line IIFE, so the control cannot be imported. The
-// self-contained `_pc*` block is sliced out of the real source and evaluated
-// with its few collaborators stubbed (BG_STYLE_IDS, _bgReadSetting,
-// _bgSubscribe/_bgUnsubscribe). The slice markers are asserted before use: move
-// or rename the block and this fails loudly rather than testing nothing.
-
-const { test } = require('node:test');
-const assert = require('node:assert/strict');
-const fs = require('node:fs');
-const path = require('node:path');
-const vm = require('node:vm');
-
-const SCREEN_JS = path.join(__dirname, '..', 'screen.js');
-const START = '    const _PC_LABELS = {';
-const END_CRLF = '    /* ======================================================================\r\n     *  Factory';
-const END_LF = '    /* ======================================================================\n     *  Factory';
-
-// What each style is expected to consume, derived by reading the BG_STYLES
-// bodies in screen.js — deliberately NOT read from the plugin's own _PC_USES
-// table, which would only assert that the table equals itself.
-//   intensity: true  => the style's build() reads settings.intensity
-//   reactive:  true  => the style's update() dereferences its `bands` argument
-// 'butterchurn' is a mode, not a BG_STYLES fog-scenery entry: _bcSyncMode
-// owns its controller and drives its own audio tap + canvas opacity (only
-// the fog-scenery half falls through to BG_STYLES.off), so both are false.
-const EXPECTED_USES = {
-    off: { intensity: false, reactive: false },
-    particles: { intensity: true, reactive: true },
-    silhouettes: { intensity: true, reactive: true },
-    lights: { intensity: true, reactive: true },
-    geometric: { intensity: true, reactive: true },
-    image: { intensity: true, reactive: false },
-    video: { intensity: false, reactive: false },
-    butterchurn: { intensity: false, reactive: false },
-};
-
-const BG_STYLE_IDS = ['off', 'particles', 'silhouettes', 'lights', 'geometric', 'butterchurn', 'image', 'video'];
-
-// Minimal DOM: only what the control touches.
-function makeDom() {
-    class El {
-        constructor(tag) {
-            this.tagName = String(tag).toUpperCase();
-            this.children = [];
-            this.parentNode = null;
-            this.listeners = {};
-            this.style = { cssText: '' };
-            this.disabled = false;
-            this._on = false;
-        }
-        appendChild(c) { c.parentNode = this; this.children.push(c); return c; }
-        removeChild(c) {
-            const i = this.children.indexOf(c);
-            if (i >= 0) this.children.splice(i, 1);
-            c.parentNode = null;
-            return c;
-        }
-        addEventListener(t, fn) { (this.listeners[t] || (this.listeners[t] = [])).push(fn); }
-        setAttribute(k, v) { this[k] = v; }
-        removeAttribute(k) { delete this[k]; }
-        get isConnected() {
-            let n = this;
-            while (n.parentNode) n = n.parentNode;
-            return n === root;
-        }
-        querySelector(sel) {
-            const m = /^option\[value="(.+)"\]$/.exec(sel);
-            const want = m ? m[1] : null;
-            const walk = (n) => {
-                for (const c of n.children) {
-                    if (want != null && c.tagName === 'OPTION' && c.value === want) return c;
-                    const r = walk(c);
-                    if (r) return r;
-                }
-                return null;
-            };
-            return walk(this);
-        }
-        fire(type) { (this.listeners[type] || []).forEach((fn) => fn()); }
-    }
-    const root = new El('root');
-    const slot = new El('div');
-    root.appendChild(slot);
-    return { El, root, slot };
-}
-
-function load({ store: initialStore } = {}) {
-    const src = fs.readFileSync(SCREEN_JS, 'utf8');
-    const start = src.indexOf(START);
-    assert.notEqual(start, -1, 'could not find the _PC_LABELS marker in screen.js');
-    let end = src.indexOf(END_CRLF);
-    if (end === -1) end = src.indexOf(END_LF);
-    assert.notEqual(end, -1, 'could not find the Factory banner marker in screen.js');
-    assert.ok(end > start, 'slice markers found out of order in screen.js');
-    const block = src.slice(start, end);
-
-    const dom = makeDom();
-    const store = Object.assign({
-        style: 'particles',
-        reactive: true,
-        intensity: 0.5,
-        customImageDataUrl: '',
-        customVideoName: '',
-    }, initialStore);
-
-    const bus = {};
-    const listeners = new Set();
-    const emit = (key) => { for (const fn of listeners) fn(key); };
-    const writes = [];
-    const timers = [];
-
-    const sandbox = {
-        console,
-        BG_STYLE_IDS,
-        // Module-scope in screen.js; the _pc* block reads it to resolve the
-        // effective style under the Venue override. Tests flip it via
-        // sandbox._venueSceneOverride and fire the 'venueScene' bus key.
-        _venueSceneOverride: false,
-        _bgReadSetting: (_panelKey, key) => store[key],
-        _bgReadGlobal: (key) => store[key],
-        _bgSubscribe: (fn) => listeners.add(fn),
-        _bgUnsubscribe: (fn) => listeners.delete(fn),
-        setTimeout: (fn) => { timers.push(fn); return timers.length; },
-        clearTimeout: () => {},
-        document: {
-            createElement: (t) => new dom.El(t),
-            // The Settings-panel mirror looks these up; absent here so it no-ops.
-            getElementById: () => null,
-        },
-        window: {
-            feedBack: {
-                uiVersion: 'v3',   // _pcSlot gates on this (docs/plugin-v3-ui.md)
-                ui: { playerControlSlot: () => dom.slot },
-                // The real bus is an EventTarget wrapper exposing on/off. Modelled
-                // here so the screen:changed subscription — and its removal — are
-                // observable.
-                on: (ev, fn) => { (bus[ev] || (bus[ev] = [])).push(fn); },
-                off: (ev, fn) => {
-                    const l = bus[ev];
-                    if (!l) return;
-                    const i = l.indexOf(fn);
-                    if (i >= 0) l.splice(i, 1);
-                },
-            },
-            h3dBgSetStyle: (v) => { writes.push(['style', v]); store.style = v; emit('style'); },
-            h3dBgSetReactive: (v) => { writes.push(['reactive', v]); store.reactive = v; emit('reactive'); },
-            h3dBgSetIntensity: (v) => { writes.push(['intensity', v]); store.intensity = v; emit('intensity'); },
-        },
-    };
-    sandbox.globalThis = sandbox;
-
-    const api = vm.runInNewContext(
-        block
-        + '\n({ _pcAcquire, _pcRelease,'
-        + '   get el() { return _pcEl; },'
-        + '   get sel() { return _pcSel; },'
-        + '   get react() { return _pcReactive; },'
-        + '   get intens() { return _pcIntensity; },'
-        + '   get reason() { return _pcReason; },'
-        + '   get refs() { return _pcRefs; } })',
-        sandbox,
-    );
-    const fireScreenChanged = () => (bus['screen:changed'] || []).slice().forEach((fn) => fn());
-    const screenHooks = () => (bus['screen:changed'] || []).length;
-    return { api, dom, store, emit, writes, timers, sandbox, listenerCount: () => listeners.size, fireScreenChanged, screenHooks };
-}
-
-// Slice the real _bgReadSetting + _bgReadGlobal out of screen.js and run them
-// against a localStorage stub. The main suite stubs both helpers identically,
-// so it can't tell the #2 refactor from a no-op; this one proves the actual
-// helper bodies differ where they must: _bgReadGlobal ignores a per-panel
-// override that _bgReadSetting(panelKey, ...) still honours.
-test('_bgReadGlobal reads the global slot, ignoring per-panel overrides', () => {
-    const src = fs.readFileSync(SCREEN_JS, 'utf8');
-    const rgStart = src.indexOf('    function _bgReadSetting(panelKey, key) {');
-    const rgEnd = src.indexOf('    // Shared "stored string -> bool" coercion');
-    assert.ok(rgStart !== -1 && rgEnd > rgStart, 'could not slice the read helpers');
-    const block = src.slice(rgStart, rgEnd);
-
-    const storage = new Map();
-    const sandbox = {
-        localStorage: { getItem: (k) => (storage.has(k) ? storage.get(k) : null) },
-        _bgCoerce: (_key, v) => v,           // identity: we test key resolution, not coercion
-        _bgMemFallback: Object.create(null),
-        BG_DEFAULTS: { style: 'particles' },
-    };
-    sandbox.globalThis = sandbox;
-    const api = vm.runInNewContext(block + '\n({ _bgReadSetting, _bgReadGlobal, _bgMemFallback })', sandbox);
-
-    storage.set('h3d_bg_style', 'lights');            // global
-    storage.set('h3d_bg_panel3_style', 'geometric');  // a per-panel override
-
-    // The renderer, reading with a panel key, honours the per-panel override...
-    assert.equal(api._bgReadSetting('panel3', 'style'), 'geometric');
-    // ...but the shared control's global read must NOT see it - this is the
-    // whole point of #2 (previously _bgReadSetting(null, ...) relied on
-    // 'h3d_bg_null_style' never existing).
-    assert.equal(api._bgReadGlobal('style'), 'lights');
-
-    // In-memory staged value wins over the persisted global (matches
-    // _bgReadSetting's precedence).
-    api._bgMemFallback.style = 'aurora';
-    assert.equal(api._bgReadGlobal('style'), 'aurora');
-    delete api._bgMemFallback.style;
-
-    // Nothing stored -> BG_DEFAULTS.
-    assert.equal(api._bgReadGlobal('style'), 'lights');
-    storage.delete('h3d_bg_style');
-    assert.equal(api._bgReadGlobal('style'), 'particles');
-});
-
-test('mounts one control into the player-control slot', () => {
-    const { api, dom } = load();
-    api._pcAcquire();
-    assert.equal(dom.slot.children.length, 1);
-    assert.ok(api.sel, 'style dropdown was not created');
-    assert.equal(api.sel.children.length, BG_STYLE_IDS.length, 'one option per style');
-});
-
-test('multiple renderer instances share a single control', () => {
-    const { api, dom } = load();
-    api._pcAcquire();
-    api._pcAcquire();
-    api._pcAcquire();
-    api._pcAcquire();
-    assert.equal(dom.slot.children.length, 1, 'four instances must not mount four controls');
-    assert.equal(api.refs, 4);
-
-    api._pcRelease();
-    api._pcRelease();
-    api._pcRelease();
-    assert.equal(dom.slot.children.length, 1, 'still held by the last instance');
-    api._pcRelease();
-    assert.equal(dom.slot.children.length, 0, 'last release must unmount');
-    assert.equal(api.el, null);
-});
-
-test('binds the screen hook on a retry when the bus was not ready at acquire', () => {
-    const ctl = load();
-    // Cold load: on a fresh page the renderer can init before the event bus is
-    // wired AND before the rail popover exists. Simulate both being absent.
-    const savedOn = ctl.sandbox.window.feedBack.on;
-    const savedUi = ctl.sandbox.window.feedBack.ui;
-    delete ctl.sandbox.window.feedBack.on;
-    ctl.sandbox.window.feedBack.ui = {};   // no playerControlSlot -> mount fails
-
-    ctl.api._pcAcquire();
-    assert.equal(ctl.screenHooks(), 0, 'nothing to bind to yet');
-    assert.equal(ctl.api.el, null, 'no slot yet, so nothing mounted');
-
-    // Bus + slot come online; the retry tick must bind the hook, not only mount.
-    ctl.sandbox.window.feedBack.on = savedOn;
-    ctl.sandbox.window.feedBack.ui = savedUi;
-    ctl.timers.shift()();   // run one retry tick
-
-    assert.equal(ctl.screenHooks(), 1, 'the retry tick failed to bind the screen hook');
-    assert.ok(ctl.api.el, 'and it should have mounted too');
-    ctl.api._pcRelease();
-});
-
-test('the last release unbinds the screen:changed hook', () => {
-    const ctl = load();
-    ctl.api._pcAcquire();
-    assert.equal(ctl.screenHooks(), 1, 'acquire should subscribe once');
-
-    ctl.api._pcAcquire();
-    ctl.api._pcRelease();
-    assert.equal(ctl.screenHooks(), 1, 'a partial release must keep the hook');
-
-    ctl.api._pcRelease();
-    assert.equal(ctl.screenHooks(), 0, 'the hook outlived the control');
-
-    // And re-acquiring must re-subscribe exactly once, not zero times (the
-    // bind is guarded on _pcScreenHook, so failing to null it would leave the
-    // control permanently deaf to chrome rebuilds).
-    ctl.api._pcAcquire();
-    assert.equal(ctl.screenHooks(), 1, 're-acquire did not re-subscribe');
-    ctl.api._pcRelease();
-});
-
-test('teardown unsubscribes from the settings bus', () => {
-    const ctl = load();
-    ctl.api._pcAcquire();
-    assert.equal(ctl.listenerCount(), 1);
-    ctl.api._pcRelease();
-    assert.equal(ctl.listenerCount(), 0, 'listener leaked after unmount');
-});
-
-test('tracks changes made from the Settings page', () => {
-    const { api, store, emit } = load();
-    api._pcAcquire();
-    store.style = 'lights';
-    emit('style');
-    assert.equal(api.sel.value, 'lights');
-});
-
-test('custom media options stay disabled until something is uploaded', () => {
-    const { api, store, emit } = load();
-    api._pcAcquire();
-    assert.equal(api.sel.querySelector('option[value="image"]').disabled, true);
-    store.customImageDataUrl = 'data:image/png;base64,AAAA';
-    emit('customImageDataUrl');
-    assert.equal(api.sel.querySelector('option[value="image"]').disabled, false);
-    assert.equal(api.sel.querySelector('option[value="video"]').disabled, true, 'video is independent');
-});
-
-test('re-mounts into a fresh slot when the player chrome is rebuilt', () => {
-    const { api, dom, sandbox, listenerCount } = load();
-    api._pcAcquire();
-    const first = api.el;
-
-    dom.root.removeChild(dom.slot);
-    const fresh = new dom.El('div');
-    dom.root.appendChild(fresh);
-    sandbox.window.feedBack.ui.playerControlSlot = () => fresh;
-
-    api._pcAcquire();
-    assert.equal(fresh.children.length, 1, 'did not remount into the new slot');
-    assert.notEqual(api.el, first, 'stale node was reused');
-    assert.equal(listenerCount(), 1, 'remount must not double-subscribe');
-});
-
-test('a non-v3 host mounts nothing (uiVersion gate)', () => {
-    const ctl = load();
-    ctl.sandbox.window.feedBack.uiVersion = 'v2';   // pre-v3 shell
-    ctl.api._pcAcquire();
-    assert.equal(ctl.api.el, null, 'must not mount when uiVersion is not v3');
-    assert.equal(ctl.dom.slot.children.length, 0);
-    // A non-v3 shell has no slot and never will, so no retry should be scheduled
-    // at all — the loop is for a not-yet-built v3 slot, not for polling v2.
-    assert.equal(ctl.timers.length, 0, 'a non-v3 host must not schedule the retry loop');
-    ctl.api._pcRelease();
-});
-
-test('a host with no player-control slot mounts nothing and does not throw', () => {
-    const { api, dom, sandbox, timers } = load();
-    sandbox.window.feedBack.ui = {};
-    api._pcAcquire();
-    assert.equal(api.el, null);
-    assert.equal(dom.slot.children.length, 0);
-
-    let guard = 0;
-    while (timers.length && guard++ < 100) timers.shift()();
-    assert.ok(guard < 100, 'retry loop did not terminate');
-});
-
-test('intensity writes once on release, not on every drag step', () => {
-    const { api, writes } = load();
-    api._pcAcquire();
-    for (const v of ['0.10', '0.20', '0.30', '0.40', '0.50']) {
-        api.intens.value = v;
-        api.intens.fire('input');
-    }
-    assert.equal(writes.filter((w) => w[0] === 'intensity').length, 0,
-        'dragging must not write — every write rebuilds the background scene');
-    api.intens.fire('change');
-    assert.equal(writes.filter((w) => w[0] === 'intensity').length, 1,
-        'releasing must write exactly once');
-});
-
-test('the dropdown and Reactive pill drive the real setters', () => {
-    const { api, store, writes } = load();
-    api._pcAcquire();
-    api.sel.value = 'geometric';
-    api.sel.fire('change');
-    assert.equal(store.style, 'geometric');
-
-    const before = store.reactive;
-    api.react.fire('click');
-    assert.equal(store.reactive, !before, 'Reactive pill must toggle');
-    assert.ok(writes.some((w) => w[0] === 'reactive'));
-});
-
-test('exposes state and reasons to assistive tech', () => {
-    const ctl = load({ store: { style: 'image', reactive: true } });   // image: reactive inert
-    ctl.api._pcAcquire();
-
-    // The reason live-region must be a REAL mounted element with the id the
-    // controls reference - not a dangling pointer. Assert resolution, not a
-    // literal (a wrong id in code would still equal the literal).
-    const reason = ctl.api.reason;
-    assert.ok(reason, 'the reason span was not created');
-    assert.equal(reason.id, 'h3d-pc-reason');
-    assert.equal(reason.parentNode, ctl.api.el, 'the reason span must be mounted in the control');
-
-    // aria-pressed: a toggle button must expose its state. image greys
-    // Reactive, so not-pressed AND disabled, and it points at the reason.
-    assert.equal(ctl.api.react['aria-pressed'], 'false', 'greyed toggle is not pressed');
-    assert.equal(ctl.api.react['aria-disabled'], 'true');
-    // Pointer must resolve to the actual span's id (kills a wrong-id mutation),
-    // and the span must carry the current reason text (kills a never-set-text
-    // mutation).
-    assert.equal(ctl.api.react['aria-describedby'], reason.id, 'inert control must reference the reason span');
-    assert.equal(reason.textContent, 'This background does not react to audio', 'reason text must match the style');
-    assert.equal(ctl.api.intens['aria-describedby'], undefined, 'an ENABLED control carries no reason');
-
-    // The intensity describe path: a style where INTENSITY is inert.
-    ctl.store.style = 'video'; ctl.emit('style');
-    assert.equal(ctl.api.intens.disabled, true, 'precondition: video greys intensity');
-    assert.equal(ctl.api.intens['aria-describedby'], reason.id, 'inert intensity must reference the reason');
-    assert.equal(reason.textContent, 'The video plays as-is - nothing to adjust here');
-
-    // Both enabled: describedby drops, aria-pressed follows the value.
-    ctl.store.style = 'particles'; ctl.store.reactive = true; ctl.emit('style');
-    assert.equal(ctl.api.react['aria-describedby'], undefined, 'enabled control drops the reason');
-    assert.equal(ctl.api.intens['aria-describedby'], undefined);
-    assert.equal(ctl.api.react['aria-pressed'], 'true', 'reactive on for particles');
-    ctl.store.reactive = false; ctl.emit('reactive');
-    assert.equal(ctl.api.react['aria-pressed'], 'false', 'aria-pressed follows the value');
-
-    // Accessible names on the non-label controls.
-    assert.equal(ctl.api.sel['aria-label'], 'Background style');
-    assert.equal(ctl.api.intens['aria-label'], 'Background intensity');
-    ctl.api._pcRelease();
-});
-
-test('greys out exactly the controls each style ignores', () => {
-    const { api, store, emit } = load();
-    api._pcAcquire();
-    for (const [style, want] of Object.entries(EXPECTED_USES)) {
-        store.style = style;
-        emit('style');
-        assert.equal(!api.intens.disabled, want.intensity, `${style}: intensity enabled-ness`);
-        assert.equal(!api.react.disabled, want.reactive, `${style}: reactive enabled-ness`);
-    }
-});
-
-test('the Venue override greys the whole Background group', () => {
-    const ctl = load({ store: { style: 'particles' } });   // a style that uses both
-    ctl.api._pcAcquire();
-    assert.equal(ctl.api.intens.disabled, false, 'precondition: both enabled off-venue');
-    assert.equal(ctl.api.react.disabled, false);
-
-    // Venue turns on: the effective style is now 'venue', which uses neither.
-    // The transition arrives on the settings bus as the 'venueScene' key.
-    ctl.sandbox._venueSceneOverride = true;
-    ctl.emit('venueScene');
-    assert.equal(ctl.api.intens.disabled, true, 'intensity should grey under Venue');
-    assert.equal(ctl.api.react.disabled, true, 'reactive should grey under Venue');
-    assert.equal(ctl.api.sel.disabled, true, 'the dropdown should be inert under Venue too');
-    assert.match(ctl.api.intens.title, /venue/i, 'reason should mention Venue');
-    // All three inert controls point at the reason under Venue (kills a
-    // 'describe reactive only' regression on the select/intensity paths).
-    const vReason = ctl.api.reason.id;
-    assert.equal(ctl.api.sel['aria-describedby'], vReason, 'select must reference the reason under Venue');
-    assert.equal(ctl.api.intens['aria-describedby'], vReason, 'intensity must reference the reason under Venue');
-    assert.equal(ctl.api.react['aria-describedby'], vReason, 'reactive must reference the reason under Venue');
-    assert.match(ctl.api.reason.textContent, /venue/i, 'the reason span carries the Venue text');
-
-    // The dropdown still shows the stored style (venue has no option), but
-    // selecting must not write while it's inert.
-    assert.equal(ctl.api.sel.value, 'particles');
-    const before = ctl.writes.length;
-    ctl.api.sel.value = 'lights';
-    ctl.api.sel.fire('change');
-    assert.equal(ctl.writes.length, before, 'a disabled dropdown must not write');
-
-    // Venue off: controls come back per the stored style.
-    ctl.sandbox._venueSceneOverride = false;
-    ctl.emit('venueScene');
-    assert.equal(ctl.api.intens.disabled, false, 'intensity re-enables when Venue exits');
-    assert.equal(ctl.api.react.disabled, false);
-    assert.equal(ctl.api.sel.disabled, false, 'the dropdown re-enables when Venue exits');
-    assert.equal(ctl.api.sel.title, 'Background style', 'the base tooltip must come back, not blank');
-    assert.equal(ctl.api.sel['aria-describedby'], undefined, 'select drops the reason off-Venue');
-    assert.equal(ctl.api.intens['aria-describedby'], undefined, 'intensity drops the reason off-Venue');
-    ctl.api._pcRelease();
-});
-
-test('an unknown style enables both controls (fails open)', () => {
-    const { api, store, emit } = load();
-    api._pcAcquire();
-    store.style = 'some_future_style';
-    emit('style');
-    assert.equal(api.intens.disabled, false);
-    assert.equal(api.react.disabled, false);
-});
-
-test('greyed-out controls cannot reach the setters', () => {
-    const { api, store, emit, writes } = load();
-    api._pcAcquire();
-    store.style = 'video';           // uses neither setting
-    emit('style');
-    const before = writes.length;
-    api.intens.fire('change');
-    api.react.fire('click');
-    assert.equal(writes.length, before, 'an inert control must not write');
-});
-
-test('greyed-out controls explain themselves on hover', () => {
-    const { api, store, emit } = load();
-    api._pcAcquire();
-    store.style = 'butterchurn';
-    emit('style');
-    assert.match(api.react.title, /butterchurn/i);
-    assert.match(api.intens.title, /butterchurn/i);
-});
-
-// A native-disabled <button>/<input> fires no pointer events, so its own
-// `title` never shows on hover. The reason must therefore also sit on the
-// non-disabled wrapper, and the disabled control must let the hover fall
-// through (pointer-events:none) — otherwise the "says why on hover" feature is
-// dead in the browser while these tests pass on the swallowed control title.
-test('the greyed-out reason reaches a hoverable wrapper', () => {
-    const { api, store, emit } = load();
-    api._pcAcquire();
-    store.style = 'video';           // uses neither setting
-    emit('style');
-
-    assert.match(api.react.parentNode.title, /nothing to adjust/i,
-        'reactive reason must be on the wrapper, not only the disabled pill');
-    assert.equal(api.react.style.pointerEvents, 'none',
-        'disabled pill must pass hover through to its wrapper');
-
-    assert.match(api.intens.parentNode.title, /nothing to adjust/i,
-        'intensity reason must be on the wrapper, not only the disabled slider');
-    assert.equal(api.intens.style.pointerEvents, 'none',
-        'disabled slider must pass hover through to its wrapper');
-
-    // ...and an enabled style clears the wrapper so the control's own title wins.
-    store.style = 'particles';
-    emit('style');
-    assert.equal(api.react.parentNode.title, '');
-    assert.equal(api.intens.parentNode.title, '');
-    assert.equal(api.intens.style.pointerEvents, '');
-});

scripts/build-tailwind.sh

@@ -7,26 +7,15 @@
 #
 # Pin to Tailwind 3.x so the input/config syntax matches what was
 # already shipped via the Play CDN (Tailwind 4 has breaking changes).
-#
-# Run this from a checkout with NO untracked plugin directories present (a
-# `git worktree add --detach` of this branch is the safest way). The content
-# glob (tailwind.config.js) scans `./plugins/**` on disk regardless of
-# .gitignore — a dev machine with private/out-of-tree plugins checked out
-# locally (e.g. audio_engine, plugin_manager) will silently bake their classes
-# into the committed CSS, which CI's clean checkout can never reproduce and
-# will permanently fail the tailwind-fresh gate.
 set -euo pipefail
 cd "$(dirname "$0")/.."
-# Byte-stable rebuilds require the exact same resolved dependency tree, not
-# just the same top-level tailwindcss version: `npx -y tailwindcss@x.y.z`
-# installs into a scratch npx cache and lets npm re-resolve transitive deps
-# (postcss, cssnano, autoprefixer) to whatever's current on the registry at
-# invocation time — those drift independently of the pinned version and
-# silently produced non-reproducible output between two machines. tailwindcss
-# is now a pinned devDependency (package.json/package-lock.json); `npm ci`
-# before this script (both here and in CI) is what actually makes the output
-# reproducible.
-exec npx tailwindcss \
+# Pin to the exact version used to generate the committed CSS — committed
+# artifacts must rebuild byte-stable for diff-friendly maintenance. The
+# pinned version is the one that produced the current static/tailwind.min.css
+# (visible in its top-of-file header comment); bump deliberately when you
+# want to track upstream Tailwind 3.x updates, and regenerate the CSS in
+# the same commit.
+exec npx -y tailwindcss@3.4.19 \
     -c tailwind.config.js \
     -i static/_tailwind.src.css \
     -o static/tailwind.min.css \

server.py

@@ -49,7 +49,7 @@ import demo_mode
 import scan
 import tailwind_rebuild
 # Extracted route modules. They import `appstate`, never `server` — one-way graph.
-from routers import audio_effects, artist_aliases, loops, playlists, ws_highway, ws_sync, chart, wanted, library_extras, shop, progression, profile, stats, version, diagnostics
+from routers import audio_effects, artist_aliases, loops, playlists, ws_highway, chart, wanted, library_extras, shop, progression, profile, stats, version, diagnostics
 from routers import tunings as tunings_router
 import enrichment
 from routers import art as art_router
@@ -1115,10 +1115,7 @@ async def startup_status_stream(request: Request):
 @app.post("/api/rescan")
 def trigger_rescan():
     """Manually trigger a library rescan."""
-    # force=True: a manual Refresh must skip the directory-signature fast path —
-    # it is the escape hatch for the one change dir mtimes can't see (a pack
-    # rewritten in place under the same name).
-    if not scan.kick_scan(force=True):
+    if not scan.kick_scan():
         return {"message": "Scan already in progress"}
     return {"message": "Rescan started"}
 
@@ -1136,7 +1133,7 @@ def trigger_full_rescan():
         # delete_missing() prunes anything genuinely gone at the end.
         meta_db.conn.execute("UPDATE songs SET mtime = -1")
         meta_db.conn.commit()
-    if not scan.kick_scan(force=True):
+    if not scan.kick_scan():
         return {"message": "Scan already in progress"}
     return {"message": "Full rescan started"}
 
@@ -1618,12 +1615,6 @@ app.include_router(media_router.router)
 app.include_router(ws_highway.router)
 
 
-# ── Session-sync relay WebSocket (feedBack#1030) ─────────────────────────────
-# Dumb JSON fan-out rooms for cross-device followers (splitscreen LAN mode).
-# Implementation in lib/routers/ws_sync.py.
-app.include_router(ws_sync.router)
-
-
 # ── Audio serving ─────────────────────────────────────────────────────────────
 
 

static/app.js

@@ -218,7 +218,6 @@ import {
     setAvOffsetMs,
     setInstrumentPathway,
     setupAppUpdates,
-    setupWindowOptions,
     syncDefaultArrangementPin,
 } from './js/settings.js';
 import {
@@ -1150,7 +1149,7 @@ window.feedBack.on('song:ready', () => {
 let _arrBusyGen = 0;
 let _arrBusyTimeout = null;
 
-async function changeArrangement(index, drumPart) {
+async function changeArrangement(index) {
     if (currentFilename) {
         // Tear down any pending fresh-load credits before switching: the
         // no-count-in hold timer would otherwise fire togglePlay() against the
@@ -1276,38 +1275,11 @@ async function changeArrangement(index, drumPart) {
         _resetSectionPracticeLog();
         invalidateParentCount();
 
-        // Carry the selected drum part across the re-stream. An explicit
-        // `drumPart` (a drum-part switch, from changeDrumPart) wins; otherwise
-        // preserve the current picker selection so an ARRANGEMENT switch keeps
-        // the chosen part (drum parts are song-level, not per-arrangement).
-        const part = drumPart !== undefined
-            ? drumPart
-            : (document.getElementById('drum-part-select')?.value || '');
-        window.highway.reconnect(currentFilename, index, part);
+        window.highway.reconnect(currentFilename, index);
         window.feedBack.emit('arrangement:changed', { index, filename: currentFilename });
     }
 }
 
-// Switch which drum part plays (feedpak 1.17.0 "drums as arrangements"). A part
-// switch re-streams the same song with a different drum tab — the same
-// transition as an arrangement switch — so it delegates to changeArrangement
-// with the CURRENT arrangement held and the new part applied. Wired to
-// #drum-part-select's onchange; the select is populated + shown by
-// highway.js's song_info handler only when the song has 2+ drum parts.
-async function changeDrumPart(partId) {
-    if (!currentFilename) return;
-    let index = 0;
-    const si = window.highway && typeof window.highway.getSongInfo === 'function'
-        ? window.highway.getSongInfo() : null;
-    if (si && typeof si.arrangement_index === 'number' && si.arrangement_index >= 0) {
-        index = si.arrangement_index;
-    } else {
-        const arrSel = document.getElementById('arr-select');
-        if (arrSel && arrSel.value !== '') index = Number(arrSel.value) || 0;
-    }
-    return changeArrangement(index, partId);
-}
-
 // Restart the current song from the beginning (or from loop A when an A–B
 // loop is armed). Uses the canonical _audioSeek funnel only — never touches
 // audio.currentTime directly and never reloads via playSong().
@@ -1361,25 +1333,12 @@ if (window.feedBack) window.feedBack.closeCurrentSong = closeCurrentSong;
 // leaving the player still leaves — and abandons the queue.
 window.feedBack.playQueue = (function () {
     let list = [], idx = -1, source = '', arrangements = null;
-    // Set true by _play() right before it drives playSong, consumed once by
-    // playSong's clear-guard. The primary "don't clear the queue I'm driving"
-    // signal is options.fromQueue, but a chain of plugin playSong wrappers
-    // (nam_tone, midi_amp, fretboard, invert_highway, tabview, ...) forward only
-    // (filename, arrangement) and silently drop the options object — so the flag
-    // never arrived and the queue cleared itself the instant its first song
-    // started (a gig/album/playlist never advanced). This flag rides beside the
-    // wrapper chain, not through it.
-    let _internalPlay = false;
     const active = () => idx >= 0 && idx < list.length;
     const hasNext = () => active() && idx < list.length - 1;
     function clear() { list = []; idx = -1; source = ''; arrangements = null; }
     function _play(i) {
         const fn = list[i];
-        // fromQueue is the in-band signal; _internalPlay is the out-of-band one
-        // that survives wrapper chains dropping the options arg. Both set; either
-        // suffices. playSong runs its clear-guard synchronously at entry, and the
-        // wrapper chain reaches it synchronously, so the flag is still set then.
-        _internalPlay = true;
+        // fromQueue keeps the queue from clearing itself; playSong decodeURIs.
         window.playSong(encodeURIComponent(fn), arrangements ? arrangements[i] : undefined, { fromQueue: true });
     }
     function start(files, opts) {
@@ -1411,15 +1370,6 @@ window.feedBack.playQueue = (function () {
     }
     return {
         start: start, advance: advance, hasNext: hasNext, active: active, clear: clear,
-        // True when the current song is a queue ADVANCE (song 2..N of a set),
-        // false for its first song or a standalone play. The venue uses this to
-        // fly in once on arrival at the set, then continue the room between
-        // songs instead of replaying the arrival flyover every track.
-        isContinuation: function () { return active() && idx > 0; },
-        // One-shot: true iff _play just kicked off this playSong. Consumed on
-        // read so a later MANUAL play still clears the queue. playSong calls this
-        // instead of trusting options.fromQueue to survive the wrapper chain.
-        _consumeInternalPlay: function () { const v = _internalPlay; _internalPlay = false; return v; },
         source: function () { return source; },
         remaining: function () { return active() ? list.length - idx - 1 : 0; },
         // What's coming, for consumers that RENDER the queue (a results
@@ -2346,14 +2296,11 @@ configureHost({
     currentFilename: () => currentFilename,
 });
 
-// `esc` is here for out-of-tree plugins only: their screen.js loads as a classic
-// script and called esc() back when app.js was one too and it was an implicit
-// global. Nothing in core reads window.esc — import it from ./js/dom.js instead.
 Object.assign(window, {
     _confirmDialog, _getArrangementNamingMode, _libraryLocalFilename, _librarySongArtUrl,
     _librarySongId, _onHeaderClick, _onNamingModeChange, _trapFocusInModal,
-    changeArrangement, changeDrumPart, checkPluginUpdates, clearLibFilters, clearLoop,
-    deleteSelectedLoop, esc, exportDiagnostics, exportSettings, filterFavorites,
+    changeArrangement, checkPluginUpdates, clearLibFilters, clearLoop,
+    deleteSelectedLoop, exportDiagnostics, exportSettings, filterFavorites,
     filterLibrary, fullRescanLibrary, goFavPage, handleSliderInput,
     hideScanBanner, importSettings, loadPlugins, loadSavedLoop,
     loadSettings, onSectionPracticeModeChange, openEditModal, persistSetting,

static/capabilities.js

@@ -128,7 +128,6 @@
         stems: Object.freeze({ lifecycle: 'active', label: 'Active contract', tone: 'clean', summary: 'Core-coordinated stem automation, restore, manual override, and compatibility bridge surface backed by the active Stems provider.' }),
         visualization: Object.freeze({ lifecycle: 'active', label: 'Active contract', tone: 'clean', summary: 'Core-coordinated highway renderer providers: discovery, picker selection, auto-match attribution, failure fallback, and redaction-safe diagnostics.' }),
         'note-detection': Object.freeze({ lifecycle: 'active', label: 'Active contract', tone: 'clean', summary: 'Coordinates note-detection providers and requester-owned, context-scoped detection bindings (spec 009); consumers own judgment, hit/miss flow as observability events.' }),
-        'chart-transform': Object.freeze({ lifecycle: 'active', label: 'Active contract', tone: 'clean', summary: 'Coordinates chart-transform providers: pre-render/pre-scoring chart substitution applied after difficulty filtering, with persisted selection, refresh, and fixed-reason failure attribution (#952).' }),
     });
     const EXPECTED_COMPATIBILITY_SHIMS = Object.freeze({});
 
@@ -1537,4 +1536,4 @@
         window.dispatchEvent(new CustomEvent('feedBack:capabilities:ready', { detail: api }));
         _notifySubscribers('registered', { capability: '*', pluginId: 'core', timestamp: _now() });
     } catch (_) {}
-})();
+})();

static/capabilities/chart-transform.js

@@ -1,336 +0,0 @@
-// Chart-transform provider registration, selection, and diagnostics.
-// Transformation stays on the synchronous highway data plane and runs after
-// difficulty filtering; the selected provider is shared by highway instances.
-(function () {
-    'use strict';
-
-    window.feedBack = window.feedBack || {};
-    const capabilities = window.feedBack.capabilities;
-    if (!capabilities || capabilities.version !== 1) return;
-    if (window.feedBack.chartTransformDomain && window.feedBack.chartTransformDomain.version === 1) return;
-
-    const STORAGE_KEY = 'feedBack.chartTransform.selectedProviderId';
-    const PUBLIC_FAILURE_REASON = 'Chart transform provider failed';
-
-    // providerId → { id, label, pluginId, transform }
-    const providers = new Map();
-    let activeProviderId = null;
-    let activeSource = 'startup';
-    let lastFailure = null;
-    // Count of highway instances the active provider is installed on
-    // (the primary window.highway plus any announced via highway:created —
-    // e.g. splitscreen panels). 0 = nothing capable exists yet.
-    let installedCount = 0;
-    // Known highway surfaces beyond window.highway, held weakly so closed
-    // splitscreen panels can be collected. WeakRef is guarded for minimal
-    // test environments; the strong-ref fallback only over-retains there.
-    const _HasWeakRef = typeof WeakRef === 'function';
-    let _surfaces = [];
-
-    function _handled(payload = {}) { return { outcome: 'handled', payload }; }
-    function _degraded(reason, payload = {}) { return { outcome: 'degraded', reason, payload }; }
-
-    function _snapshot(extra = {}) {
-        return {
-            available: true,
-            active: activeProviderId,
-            activeSource,
-            installed: installedCount > 0,
-            surfaces: installedCount,
-            providers: [...providers.values()].map(p => ({
-                id: p.id,
-                label: p.label,
-                pluginId: p.pluginId,
-            })),
-            lastFailure: lastFailure ? { ...lastFailure } : null,
-            ...extra,
-        };
-    }
-
-    function _emit(name, detail) {
-        try { capabilities.emitEvent('chart-transform', name, detail || {}); }
-        catch (_) { /* eventing must not break rendering */ }
-    }
-
-    function _contributeDiagnostics() {
-        const diagnostics = window.feedBack && window.feedBack.diagnostics;
-        if (diagnostics && typeof diagnostics.contribute === 'function') {
-            try {
-                diagnostics.contribute('chart-transform-capability', {
-                    schema: 'feedBack.chart_transform.diagnostics.v1',
-                    ..._snapshot(),
-                });
-            } catch (_) { /* diagnostics must not break rendering */ }
-        }
-    }
-
-    function _persistSelection(providerId) {
-        try {
-            if (providerId) window.localStorage.setItem(STORAGE_KEY, providerId);
-            else window.localStorage.removeItem(STORAGE_KEY);
-        } catch (_) { /* storage unavailable → in-memory selection only */ }
-    }
-
-    function _persistedSelection() {
-        try { return window.localStorage.getItem(STORAGE_KEY) || null; }
-        catch (_) { return null; }
-    }
-
-    function _capable(hw) {
-        return !!(hw && typeof hw.setChartTransform === 'function');
-    }
-
-    // Every capable highway surface: window.highway plus live announced
-    // instances (splitscreen panels), deduped, dead refs pruned in place.
-    function _eachSurface(fn) {
-        const seen = new Set();
-        const primary = window.highway;
-        if (_capable(primary)) { seen.add(primary); fn(primary); }
-        const live = [];
-        for (const ref of _surfaces) {
-            const hw = _HasWeakRef ? ref.deref() : ref;
-            if (!hw) continue;
-            live.push(ref);
-            if (seen.has(hw) || !_capable(hw)) continue;
-            seen.add(hw);
-            fn(hw);
-        }
-        _surfaces = live;
-        return seen.size;
-    }
-
-    function _rememberSurface(hw) {
-        if (!_capable(hw) || hw === window.highway) return;
-        let known = false;
-        _eachSurface(() => {});
-        for (const ref of _surfaces) {
-            if ((_HasWeakRef ? ref.deref() : ref) === hw) { known = true; break; }
-        }
-        if (!known) _surfaces.push(_HasWeakRef ? new WeakRef(hw) : hw);
-    }
-
-    // Hand the current selection to every highway surface (or clear it).
-    // Selection survives with zero surfaces — it re-applies as instances
-    // appear (song:ready for the primary, highway:created for panels).
-    function _install() {
-        const provider = activeProviderId ? providers.get(activeProviderId) : null;
-        const payload = provider ? { id: provider.id, transform: provider.transform } : null;
-        installedCount = 0;
-        _eachSurface((hw) => {
-            try {
-                hw.setChartTransform(payload);
-                if (payload) installedCount += 1;
-            } catch (_) { /* one broken surface must not block the rest */ }
-        });
-        return installedCount > 0 || payload === null;
-    }
-
-    function _setActive(providerId, source) {
-        const from = activeProviderId;
-        activeProviderId = providerId;
-        activeSource = String(source || 'unknown');
-        _persistSelection(providerId);
-        _install();
-        if (from !== providerId) {
-            _emit('transform-changed', { from, to: providerId, source: activeSource });
-        }
-        _contributeDiagnostics();
-    }
-
-    function _payload(ctx = {}) {
-        return ctx.payload && typeof ctx.payload === 'object' ? ctx.payload : {};
-    }
-
-    function _providersForParticipant(participantId) {
-        return [...providers.values()].filter(provider => provider.pluginId === participantId);
-    }
-
-    function _registerProviderParticipant(participantId) {
-        const owned = _providersForParticipant(participantId);
-        if (!owned.length) return;
-        capabilities.registerParticipant(participantId, {
-            'chart-transform': {
-                roles: ['provider'],
-                operations: ['chart.transform'],
-                events: [],
-                mode: 'active',
-                compatibility: 'none',
-                safety: 'safe',
-                runtime: true,
-                description: `${owned.length} registered chart transform provider${owned.length === 1 ? '' : 's'}.`,
-                provider_policy: {
-                    providerIds: owned.map(provider => provider.id),
-                    providers: owned.map(provider => ({ id: provider.id, label: provider.label })),
-                },
-            },
-        });
-    }
-
-    function _registerProvider(ctx = {}) {
-        const payload = _payload(ctx);
-        const providerId = String(payload.providerId || payload.id || '').trim();
-        if (!providerId) return _degraded('Provider registration requires a providerId', _snapshot());
-        if (typeof payload.transform !== 'function') {
-            return _degraded('Provider registration requires a transform(input) function', _snapshot());
-        }
-        const participantId = String(ctx.source || ctx.requester || providerId);
-        const existing = providers.get(providerId);
-        if (existing && existing.pluginId !== participantId) {
-            return _degraded(
-                `Provider ${providerId} is already registered by a different participant`,
-                _snapshot(),
-            );
-        }
-        providers.set(providerId, {
-            id: providerId,
-            label: String(payload.label || providerId),
-            pluginId: participantId,
-            transform: payload.transform,
-        });
-        _registerProviderParticipant(participantId);
-        _emit('provider-registered', { providerId });
-        // Restore a persisted selection the moment its provider appears.
-        if (!activeProviderId && _persistedSelection() === providerId) {
-            _setActive(providerId, 'restore-selection');
-        } else if (activeProviderId === providerId) {
-            // Re-registration after script rehydration: reinstall the fresh
-            // transform closure so the highway isn't holding a stale one.
-            _install();
-        }
-        _contributeDiagnostics();
-        return _handled(_snapshot({ registered: providerId }));
-    }
-
-    function _unregisterProvider(ctx = {}) {
-        const payload = _payload(ctx);
-        const providerId = String(payload.providerId || payload.id || '').trim();
-        const provider = providers.get(providerId);
-        if (!provider) return _degraded(`Unknown chart-transform provider: ${providerId || '(none)'}`, _snapshot());
-        const callerId = String(ctx.source || ctx.requester || providerId);
-        if (provider.pluginId !== callerId) {
-            return _degraded(
-                `Provider ${providerId} can only be unregistered by its original registrant`,
-                _snapshot(),
-            );
-        }
-        providers.delete(providerId);
-        if (activeProviderId === providerId) {
-            // Keep the persisted selection so the provider re-activates on
-            // its next registration; just detach it from the highway.
-            activeProviderId = null;
-            _install();
-            _emit('transform-changed', { from: providerId, to: null, source: 'provider-unregistered' });
-        }
-        const remainingProviders = _providersForParticipant(provider.pluginId);
-        if (remainingProviders.length) {
-            _registerProviderParticipant(provider.pluginId);
-        } else if (typeof capabilities.unregisterParticipant === 'function') {
-            const live = typeof capabilities.inspect === 'function' ? capabilities.inspect('chart-transform') : null;
-            const participant = ((live && live.participants) || []).find(p => p.pluginId === provider.pluginId);
-            const roles = participant && Array.isArray(participant.roles) ? participant.roles : [];
-            const providerOnly = roles.length === 1 && roles[0] === 'provider';
-            if (!participant || providerOnly) {
-                try { capabilities.unregisterParticipant(provider.pluginId, 'chart-transform'); }
-                catch (_) { /* participant cleanup is best-effort */ }
-            }
-        }
-        _emit('provider-unregistered', { providerId });
-        _contributeDiagnostics();
-        return _handled(_snapshot({ unregistered: providerId }));
-    }
-
-    function _targetProviderId(ctx = {}) {
-        const payload = _payload(ctx);
-        const target = ctx.target && typeof ctx.target === 'object' ? ctx.target : {};
-        return String(
-            target.providerId || target.provider_id || target.id
-            || payload.providerId || payload.provider_id || payload.id
-            || (typeof ctx.target === 'string' ? ctx.target : '') || ''
-        ).trim();
-    }
-
-    function _selectProvider(ctx = {}) {
-        const providerId = _targetProviderId(ctx);
-        if (!providerId) return _degraded('Transform selection requires a provider id', _snapshot());
-        if (!providers.has(providerId)) {
-            return _degraded(`Unknown chart-transform provider: ${providerId}`, _snapshot());
-        }
-        _setActive(providerId, ctx.requester ? `command:${ctx.requester}` : 'command');
-        return _handled(_snapshot({ selected: providerId }));
-    }
-
-    function _clearProvider(ctx = {}) {
-        _setActive(null, ctx.requester ? `command:${ctx.requester}` : 'command');
-        return _handled(_snapshot({ cleared: true }));
-    }
-
-    function _refresh() {
-        if (!activeProviderId || installedCount === 0) return _handled(_snapshot({ refreshed: false }));
-        let refreshed = 0;
-        _eachSurface((hw) => {
-            if (typeof hw.refreshChartTransform !== 'function') return;
-            try { hw.refreshChartTransform(); refreshed += 1; }
-            catch (_) { /* one broken surface must not block the rest */ }
-        });
-        return _handled(_snapshot({ refreshed: refreshed > 0 }));
-    }
-
-    capabilities.registerOwner('chart-transform', {
-        pluginId: 'core.chart-transform',
-        kind: 'provider-coordinator',
-        safety: 'safe',
-        commands: ['inspect', 'list-providers', 'register-provider', 'unregister-provider', 'select-provider', 'clear-provider', 'refresh'],
-        operations: ['chart.transform'],
-        events: ['provider-registered', 'provider-unregistered', 'transform-changed', 'transform-failed'],
-        description: 'Owns chart-transform providers: pre-render/pre-scoring chart substitution applied after difficulty filtering, with selection, refresh, and failure attribution.',
-        handlers: {
-            inspect: () => _handled(_snapshot()),
-            'list-providers': () => _handled(_snapshot()),
-            'register-provider': (ctx) => _registerProvider(ctx),
-            'unregister-provider': (ctx) => _unregisterProvider(ctx),
-            'select-provider': (ctx) => _selectProvider(ctx),
-            'clear-provider': (ctx) => _clearProvider(ctx),
-            refresh: () => _refresh(),
-        },
-    });
-
-    // Bus mirroring (guarded: the bus may not exist in minimal/test envs).
-    const sm = window.feedBack;
-    if (typeof sm.on === 'function') {
-        try {
-            sm.on('highway:chart-transform-failed', (e) => {
-                const detail = (e && e.detail) || e || {};
-                lastFailure = {
-                    providerId: String(detail.id || activeProviderId || 'unknown'),
-                    reason: PUBLIC_FAILURE_REASON,
-                };
-                _emit('transform-failed', { ...lastFailure });
-                _contributeDiagnostics();
-            });
-            // The primary highway is created after this module evaluates —
-            // install a pending selection once a song is loading/ready.
-            sm.on('song:ready', () => {
-                if (activeProviderId && installedCount === 0 && _install()) {
-                    // setChartTransform restages immediately, so the chart
-                    // that just became ready picks the transform up now.
-                    _contributeDiagnostics();
-                }
-            });
-            // Additional instances restage the active provider against their
-            // own chart state.
-            sm.on('highway:created', (e) => {
-                const detail = (e && e.detail) || e || {};
-                if (!_capable(detail.highway)) return;
-                _rememberSurface(detail.highway);
-                if (activeProviderId) _install();
-                _contributeDiagnostics();
-            });
-        } catch (_) { /* bus mirroring is best-effort */ }
-    }
-
-    window.feedBack.chartTransformDomain = {
-        version: 1,
-        snapshot: _snapshot,
-    };
-    _contributeDiagnostics();
-})();

static/highway.js

@@ -267,19 +267,6 @@ function createHighway() {
     hwState._filteredChords = null;
     hwState._filteredAnchors = null;
     hwState._filteredHandShapes = null;
-    // Transform stage; null fields fall through to filtered/original data.
-    hwState._xfProvider = null;      // { id, transform } or null
-    hwState._xfNotes = null;         // effective (post-filter) views
-    hwState._xfChords = null;
-    hwState._xfAnchors = null;
-    hwState._xfNotesAll = null;      // full-difficulty views (getNotes/getChords)
-    hwState._xfChordsAll = null;
-    hwState._xfChordTemplates = null;
-    hwState._xfStringCount = null;   // number or null
-    hwState._xfTuning = null;        // array or null
-    hwState._xfCapo = null;          // number or null
-    hwState._xfHandShapes = null;    // array or null
-    hwState._xfCentOffset = null;    // number or null
     // Tracks whether ANY phrase level carries handshape data. Lets us
     // distinguish "this difficulty has none" (respect strictly — even
     // when empty) from "the chart's phrase data never authored any
@@ -410,8 +397,7 @@ function createHighway() {
     function getAnchorAt(t) {
         // Same master-difficulty fallback as the render loops — the
         // anchor ladder pairs with the note ladder.
-        const src = hwState._xfAnchors !== null ? hwState._xfAnchors
-            : hwState._filteredAnchors !== null ? hwState._filteredAnchors : hwState.anchors;
+        const src = hwState._filteredAnchors !== null ? hwState._filteredAnchors : hwState.anchors;
         let a = src[0] || { fret: 1, width: 4 };
         for (const anc of src) {
             if (anc.time > t) break;
@@ -422,8 +408,7 @@ function createHighway() {
 
     function getMaxFretInWindow(t) {
         // Find the highest fret needed across all anchors visible on screen
-        const src = hwState._xfAnchors !== null ? hwState._xfAnchors
-            : hwState._filteredAnchors !== null ? hwState._filteredAnchors : hwState.anchors;
+        const src = hwState._filteredAnchors !== null ? hwState._filteredAnchors : hwState.anchors;
         let maxFret = 0;
         for (const anc of src) {
             if (anc.time > t + VISIBLE_SECONDS + 2) break; // Skip anchors well in the future (with a little buffer to avoid moving early the cutoff)
@@ -556,20 +541,17 @@ function createHighway() {
 
         // Chart content (filter-aware — difficulty-filtered arrays
         // preferred; raw arrays are the fallback when no ladder data).
-        b.notes = hwState._xfNotes !== null ? hwState._xfNotes
-            : hwState._filteredNotes !== null ? hwState._filteredNotes : hwState.notes;
-        b.chords = hwState._xfChords !== null ? hwState._xfChords
-            : hwState._filteredChords !== null ? hwState._filteredChords : hwState.chords;
-        b.anchors = hwState._xfAnchors !== null ? hwState._xfAnchors
-            : hwState._filteredAnchors !== null ? hwState._filteredAnchors : hwState.anchors;
+        b.notes = hwState._filteredNotes !== null ? hwState._filteredNotes : hwState.notes;
+        b.chords = hwState._filteredChords !== null ? hwState._filteredChords : hwState.chords;
+        b.anchors = hwState._filteredAnchors !== null ? hwState._filteredAnchors : hwState.anchors;
         b.beats = hwState.beats;
         b.sections = hwState.sections;
-        b.chordTemplates = hwState._xfChordTemplates !== null ? hwState._xfChordTemplates : hwState.chordTemplates;
-        b.stringCount = hwState._xfStringCount !== null ? hwState._xfStringCount : hwState.stringCount;
-        // Effective tuning metadata; live references like the chart arrays.
-        b.tuning = hwState._xfTuning !== null ? hwState._xfTuning : hwState.songInfo?.tuning;
-        b.capo = hwState._xfCapo !== null ? hwState._xfCapo : hwState.songInfo?.capo;
-        b.centOffset = hwState._xfCentOffset !== null ? hwState._xfCentOffset : hwState.songInfo?.centOffset;
+        b.chordTemplates = hwState.chordTemplates;
+        b.stringCount = hwState.stringCount;
+        // Mirrors song_info tuning capo offsets (±semitones from the
+        // instrument’s standard open-string layout). Live reference.
+        b.tuning = hwState.songInfo?.tuning;
+        b.capo = hwState.songInfo?.capo;
         b.lyrics = hwState.lyrics;
         b.lyricsSource = hwState.lyricsSource;
         b.toneChanges = hwState.toneChanges;
@@ -590,10 +572,9 @@ function createHighway() {
         // don't belong. Only fall back to the flat list when the
         // phrase data carries no handshapes at all (common on DLC
         // where handshapes ship on the arrangement root).
-        b.handShapes = hwState._xfHandShapes !== null ? hwState._xfHandShapes
-            : (hwState._filteredHandShapes !== null && hwState._phrasesHaveHandShapes)
-                ? hwState._filteredHandShapes
-                : hwState.handShapes;
+        b.handShapes = (hwState._filteredHandShapes !== null && hwState._phrasesHaveHandShapes)
+            ? hwState._filteredHandShapes
+            : hwState.handShapes;
 
         // Display flags
         b.inverted = hwState._inverted;
@@ -1005,22 +986,6 @@ function createHighway() {
                 // inline arrow function.
                 function _handleAsyncInitFailure(e) {
                     if (hwState._renderer !== _installedRenderer) return;
-                    // ...and ignore a rejection from a SUPERSEDED init cycle.
-                    //
-                    // A renderer mints a fresh readyPromise on every init(), and
-                    // rejects the previous one ("superseded") when a newer init
-                    // starts. The renderer object is unchanged, so the identity
-                    // check above does not catch it — and we would tear down a
-                    // perfectly healthy renderer that is merely re-initialising.
-                    //
-                    // This is exactly what starting a gig did: setViz('venue')
-                    // installed the 3D renderer, then the queue's playSong()
-                    // re-initialised it a tick later; init #1's promise rejected,
-                    // and the gig dropped to the fallback 2D highway with the
-                    // venue gone. A superseded init is not a failed init — the
-                    // NEW cycle owns the outcome, and its own promise is what we
-                    // must judge.
-                    if (_installedRenderer.readyPromise !== rp) return;
                     console.error('renderer async init failure:', e);
                     _destroyCurrentIfInited();
                     hwState._renderer = _defaultRenderer;
@@ -1194,17 +1159,6 @@ function createHighway() {
             ' (user ' + hwState._renderScale.toFixed(2) + ' / auto ' + hwState._autoScale.toFixed(2) + ')';
     }
 
-    // Optional renderer capability: "my picture keeps moving even when the chart
-    // clock is stopped". Anything a renderer animates on its own clock (the 3D
-    // highway's venue video + crowd) has to opt out of the paused-frame throttle
-    // or it renders at 10 fps while the song is paused. Absent / throwing =
-    // false, so every existing renderer keeps the throttle unchanged.
-    function _rendererNeedsContinuousFrames() {
-        const r = hwState._renderer;
-        if (!r || typeof r.needsContinuousFrames !== 'function') return false;
-        try { return r.needsContinuousFrames() === true; } catch (_) { return false; }
-    }
-
     function draw() {
         hwState.animFrame = requestAnimationFrame(draw);
         if (!hwState.canvas || !hwState._renderer) return;
@@ -1269,15 +1223,7 @@ function createHighway() {
             const _nowP = performance.now();
             if (_nowP - hwState._chartLastAdvanceAt > _CHART_MAX_INTERP_MS) {
                 _paused = true;
-                // ...unless the renderer says its picture is NOT static while
-                // paused. The throttle assumes a paused chart is a still frame,
-                // but a renderer can own content on a clock of its own — the 3D
-                // highway draws the venue's video backdrop and its reactive crowd
-                // into this same canvas, so throttling the highway throttled the
-                // whole room to 10 fps whenever the song was paused. Optional
-                // method: renderers that don't implement it keep the throttle.
-                if (!_rendererNeedsContinuousFrames()
-                    && _nowP - hwState._lastPausedDrawAt < _PAUSED_FRAME_INTERVAL_MS) return;
+                if (_nowP - hwState._lastPausedDrawAt < _PAUSED_FRAME_INTERVAL_MS) return;
                 hwState._lastPausedDrawAt = _nowP;
             }
         }
@@ -1391,10 +1337,9 @@ function createHighway() {
         // slots, so 4 strings spread across the full band rather than
         // using the upper 4/6ths of the 6-string layout. The Math.max
         // guards against a hypothetical 1-string instrument (denom=0).
-        const sc = hwState._xfStringCount !== null ? hwState._xfStringCount : hwState.stringCount;
-        const span = Math.max(1, sc - 1);
-        for (let i = 0; i < sc; i++) {
-            const yi = hwState._inverted ? (sc - 1 - i) : i;
+        const span = Math.max(1, hwState.stringCount - 1);
+        for (let i = 0; i < hwState.stringCount; i++) {
+            const yi = hwState._inverted ? (hwState.stringCount - 1 - i) : i;
             const y = strTop + (yi / span) * (strBot - strTop);
             hwState.ctx.strokeStyle = hwState.STRING_COLORS[i] || '#888';
             hwState.ctx.lineWidth = 3;
@@ -1497,7 +1442,6 @@ function createHighway() {
             hwState._filteredAnchors = null;
             hwState._filteredHandShapes = null;
             hwState._phrasesHaveHandShapes = false;
-            _restageChartTransform();
             return;
         }
         const outNotes = [];
@@ -1545,116 +1489,6 @@ function createHighway() {
         }
         hwState._filteredHandShapes = outHandShapes;
         hwState._phrasesHaveHandShapes = anyHandShapeInPhrases;
-        _restageChartTransform();
-    }
-
-    function _clearChartTransformStage() {
-        hwState._xfNotes = null;
-        hwState._xfChords = null;
-        hwState._xfAnchors = null;
-        hwState._xfNotesAll = null;
-        hwState._xfChordsAll = null;
-        hwState._xfChordTemplates = null;
-        hwState._xfStringCount = null;
-        hwState._xfTuning = null;
-        hwState._xfCapo = null;
-        hwState._xfHandShapes = null;
-        hwState._xfCentOffset = null;
-    }
-
-    function _cloneChartTransformValue(value, seen = new WeakMap()) {
-        if (!value || typeof value !== 'object') return value;
-        if (seen.has(value)) return seen.get(value);
-        const copy = Array.isArray(value) ? new Array(value.length) : {};
-        seen.set(value, copy);
-        for (const key of Object.keys(value)) {
-            Object.defineProperty(copy, key, {
-                value: _cloneChartTransformValue(value[key], seen),
-                enumerable: true,
-                configurable: true,
-                writable: true,
-            });
-        }
-        return copy;
-    }
-
-    function _sortedChartTransformArray(items, key) {
-        return items.slice().sort((a, b) => a[key] - b[key]);
-    }
-
-    function _reportChartTransformFailure(provider, error) {
-        _clearChartTransformStage();
-        console.error('chart transform:', error);
-        if (window.feedBack && typeof window.feedBack.emit === 'function') {
-            try {
-                window.feedBack.emit('highway:chart-transform-failed', {
-                    id: provider.id,
-                });
-            } catch (_) { /* eventing must not break rendering */ }
-        }
-    }
-
-    // Stage one synchronous transform over the difficulty-filtered chart.
-    function _restageChartTransform() {
-        _clearChartTransformStage();
-        const p = hwState._xfProvider;
-        if (!p) return;
-        // Pre-ready there is nothing meaningful to transform (chart arrays
-        // are still streaming, songInfo may be empty) — keep the provider
-        // attached and let the `ready` path (which sets hwState.ready BEFORE
-        // _rebuildMasteryFilter) run the first real staging.
-        if (!hwState.ready) return;
-        const filterActive = hwState._filteredNotes !== null;
-        try {
-            let out = p.transform(_cloneChartTransformValue({
-                notes: filterActive ? hwState._filteredNotes : hwState.notes,
-                chords: hwState._filteredChords !== null ? hwState._filteredChords : hwState.chords,
-                anchors: hwState._filteredAnchors !== null ? hwState._filteredAnchors : hwState.anchors,
-                allNotes: hwState.notes,
-                allChords: hwState.chords,
-                chordTemplates: hwState.chordTemplates,
-                // Same effective selection the bundle uses (see b.handShapes).
-                handShapes: (hwState._filteredHandShapes !== null && hwState._phrasesHaveHandShapes)
-                    ? hwState._filteredHandShapes
-                    : hwState.handShapes,
-                stringCount: hwState.stringCount,
-                songInfo: hwState.songInfo,
-            }));
-            if (out && typeof out.then === 'function') {
-                try {
-                    const catchAsyncFailure = out.catch;
-                    if (typeof catchAsyncFailure === 'function') {
-                        catchAsyncFailure.call(out, error => console.error('chart transform async:', error));
-                    }
-                } catch (_) { /* the synchronous failure below remains authoritative */ }
-                throw new TypeError('Chart transform providers must return synchronously');
-            }
-            if (!out || typeof out !== 'object') return;
-            out = _cloneChartTransformValue(out);
-            if (Array.isArray(out.notes)) hwState._xfNotes = _sortedChartTransformArray(out.notes, 't');
-            if (Array.isArray(out.chords)) hwState._xfChords = _sortedChartTransformArray(out.chords, 't');
-            if (Array.isArray(out.anchors)) hwState._xfAnchors = _sortedChartTransformArray(out.anchors, 'time');
-            // Full-difficulty views: explicit allNotes/allChords, or reuse the
-            // effective output when no filter is active (effective === raw then).
-            if (Array.isArray(out.allNotes)) hwState._xfNotesAll = _sortedChartTransformArray(out.allNotes, 't');
-            else if (!filterActive && Array.isArray(out.notes)) hwState._xfNotesAll = hwState._xfNotes;
-            if (Array.isArray(out.allChords)) hwState._xfChordsAll = _sortedChartTransformArray(out.allChords, 't');
-            else if (hwState._filteredChords === null && Array.isArray(out.chords)) hwState._xfChordsAll = hwState._xfChords;
-            if (Array.isArray(out.chordTemplates)) hwState._xfChordTemplates = out.chordTemplates;
-            if (Number.isFinite(out.stringCount) && out.stringCount >= 1) {
-                // Same [1, 8] clamp as the song_info stringCount handler.
-                hwState._xfStringCount = Math.max(1, Math.min(8, Math.trunc(out.stringCount)));
-            }
-            if (Array.isArray(out.tuning) && out.tuning.length) hwState._xfTuning = out.tuning;
-            if (Number.isFinite(out.capo) && out.capo >= 0) hwState._xfCapo = Math.trunc(out.capo);
-            if (Array.isArray(out.handShapes)) {
-                hwState._xfHandShapes = _sortedChartTransformArray(out.handShapes, 'start_time');
-            }
-            if (Number.isFinite(out.centOffset)) hwState._xfCentOffset = out.centOffset;
-        } catch (e) {
-            _reportChartTransformFailure(p, e);
-            return;
-        }
     }
 
     // ── Public API ───────────────────────────────────────────────────────
@@ -1699,8 +1533,6 @@ function createHighway() {
             hwState._filteredAnchors = null;
             hwState._filteredHandShapes = null;
             hwState._phrasesHaveHandShapes = false;
-            // Keep _xfProvider (persists across songs); drop staged output.
-            _clearChartTransformStage();
             _resetChordRenderState();
         },
 
@@ -2076,21 +1908,17 @@ function createHighway() {
                                     // never routable.
                                     const isAudioUrl = msg.audio_url.startsWith('/audio/');
                                     // "Full mix" covers BOTH single-mix pack shapes:
-                                    //  - single-stem packs (stems: [full.ogg] only) — the pack's
-                                    //    one stem IS its mixdown, so the server leaves it in the
-                                    //    stems list, has_full_mix is false, and audio_url points
-                                    //    at that one stem; and
-                                    //  - legacy stem-less packs, whose mixdown sits outside stems
-                                    //    behind the deprecated original_audio: key, so has_stems
-                                    //    is false and audio_url == full_mix_url.
-                                    // Either way there is one audible source and no per-stem mix
-                                    // to preserve, so routing it natively loses nothing. A pack
-                                    // that retains its `full` stem ALONGSIDE separated stems is
-                                    // multi-stem (has_full_mix && has_stems) and stays out until
-                                    // Phase 2 — routing it natively would drop the mixer.
+                                    //  - stem-less packs (original_audio: in the manifest,
+                                    //    audio_url == original_audio_url), and
+                                    //  - single-stem packs (stems: [full.ogg] only) — the server
+                                    //    puts the full mix in the stems list, has_original_audio
+                                    //    is false, and audio_url points at the one stem. With one
+                                    //    stem there is no per-stem mix to preserve, so routing it
+                                    //    natively loses nothing. Real multi-stem (>1) stays out
+                                    //    until Phase 2.
                                     const isFeedpakFullMix = !isAudioUrl
                                         && msg.audio_url.startsWith('/api/sloppak/')
-                                        && ((!!msg.has_full_mix && !msg.has_stems)
+                                        && ((!!msg.has_original_audio && !msg.has_stems)
                                             || (msg.stems || []).length === 1);
                                     // Record the loaded song's audio so app.js can re-route it
                                     // between the HTML5 and JUCE paths if the audio engine is
@@ -2115,7 +1943,7 @@ function createHighway() {
                                         'isFeedpakFullMix=', isFeedpakFullMix,
                                         'has_stems=', !!msg.has_stems,
                                         'stems=', (msg.stems || []).length,
-                                        'has_full_mix=', !!msg.has_full_mix,
+                                        'has_original_audio=', !!msg.has_original_audio,
                                         'format=', msg.format,
                                         'alreadyLoaded=', alreadyLoaded,
                                         'juceApi=', !!window.feedBackDesktop?.audio);
@@ -2298,31 +2126,6 @@ function createHighway() {
                                         sel.appendChild(opt);
                                     }
                                 }
-                                // Drum-part picker (feedpak 1.17.0 "drums as
-                                // arrangements"): a song can carry several drum
-                                // charts. Populate the picker beside the
-                                // arrangement switcher; show it only when there
-                                // are 2+ parts to choose between. `drum_parts`
-                                // is always present (empty for non-drum songs),
-                                // so a single-drum / no-drum song hides it. The
-                                // currently-streaming part is marked selected by
-                                // the `drum_tab` handler below (authoritative
-                                // `part_id`), so we don't guess here.
-                                {
-                                    const dpSel = document.getElementById('drum-part-select');
-                                    if (dpSel) {
-                                        const parts = Array.isArray(msg.drum_parts) ? msg.drum_parts : [];
-                                        dpSel.textContent = '';
-                                        for (const p of parts) {
-                                            const opt = document.createElement('option');
-                                            opt.value = p.id;
-                                            opt.textContent = p.name || p.id;
-                                            dpSel.appendChild(opt);
-                                        }
-                                        const dpRow = document.getElementById('v3-drum-part-row');
-                                        if (dpRow) dpRow.classList.toggle('hidden', parts.length <= 1);
-                                    }
-                                }
                             }
                             // Plugin context API — broadcast current song state
                             if (window.feedBack) {
@@ -2405,22 +2208,7 @@ function createHighway() {
                                 name: (typeof msg.name === 'string' && msg.name) ? msg.name : 'Drums',
                                 kit: Array.isArray(msg.kit) ? msg.kit : [],
                                 hits: [],
-                                // Which drum part this stream carries (feedpak
-                                // 1.17.0). Present only for multi-part packs;
-                                // null otherwise. Plugins can read it via
-                                // bundle.drumTab.part_id.
-                                part_id: (typeof msg.part_id === 'string' && msg.part_id) ? msg.part_id : null,
                             };
-                            // Reflect the authoritative streaming part in the
-                            // picker (the server resolves an unknown/absent
-                            // selection to the primary, so this keeps the
-                            // dropdown honest even after a fallback).
-                            if (hwState.drumTab.part_id) {
-                                const dpSel = document.getElementById('drum-part-select');
-                                if (dpSel && dpSel.value !== hwState.drumTab.part_id) {
-                                    dpSel.value = hwState.drumTab.part_id;
-                                }
-                            }
                             break;
                         case 'drum_hits':
                             if (hwState.drumTab && Array.isArray(msg.data)) {
@@ -2627,11 +2415,8 @@ function createHighway() {
             hwState._domVisSampledFrame = NaN;
             return _isHighwayVisible();
         },
-        // When a chart transform is active these return its full-difficulty
-        // views (falling through to the original arrays if the provider
-        // supplied only the filtered view).
-        getNotes() { return hwState._xfNotesAll !== null ? hwState._xfNotesAll : hwState.notes; },
-        getChords() { return hwState._xfChordsAll !== null ? hwState._xfChordsAll : hwState.chords; },
+        getNotes() { return hwState.notes; },
+        getChords() { return hwState.chords; },
         // Difficulty-filtered variants of getNotes()/getChords(). Returns the
         // master-difficulty-filtered arrays when the current song has phrase-level
         // data (i.e. the mastery slider is active). For songs with a single
@@ -2639,14 +2424,8 @@ function createHighway() {
         // these fall through to the raw arrays, the same as getNotes()/getChords().
         // Plugins that score or analyse only the notes the player is currently
         // expected to play should prefer these over getNotes()/getChords(). Read-only.
-        getFilteredNotes()  {
-            if (hwState._xfNotes !== null) return hwState._xfNotes;
-            return hwState._filteredNotes  !== null ? hwState._filteredNotes  : hwState.notes;
-        },
-        getFilteredChords() {
-            if (hwState._xfChords !== null) return hwState._xfChords;
-            return hwState._filteredChords !== null ? hwState._filteredChords : hwState.chords;
-        },
+        getFilteredNotes()  { return hwState._filteredNotes  !== null ? hwState._filteredNotes  : hwState.notes;  },
+        getFilteredChords() { return hwState._filteredChords !== null ? hwState._filteredChords : hwState.chords; },
         // Live reference to the chord-template lookup table —
         // `getChords()[i].id` is an index into this array. Each
         // template carries `{ name, fingers, frets }`:
@@ -2661,7 +2440,7 @@ function createHighway() {
         // its entries. Not difficulty-filter-aware (templates are
         // static metadata; every chord_id referenced by `getChords()`
         // is guaranteed valid).
-        getChordTemplates() { return hwState._xfChordTemplates !== null ? hwState._xfChordTemplates : hwState.chordTemplates; },
+        getChordTemplates() { return hwState.chordTemplates; },
         getToneChanges() { return hwState.toneChanges; },
         getToneBase() { return hwState.toneBase; },
         getSections() { return hwState.sections; },
@@ -2689,10 +2468,7 @@ function createHighway() {
         // string-indexed UI / geometry against THIS rather than
         // assuming 6. Defaults to 6 between songs (until the next
         // song_info message arrives).
-        getStringCount() { return hwState._xfStringCount !== null ? hwState._xfStringCount : hwState.stringCount; },
-        getTuning() { return hwState._xfTuning !== null ? hwState._xfTuning : hwState.songInfo?.tuning; },
-        getCapo() { return hwState._xfCapo !== null ? hwState._xfCapo : hwState.songInfo?.capo; },
-        getCentOffset() { return hwState._xfCentOffset !== null ? hwState._xfCentOffset : hwState.songInfo?.centOffset; },
+        getStringCount() { return hwState.stringCount; },
         addDrawHook(fn) {
             hwState._drawHooks.push(fn);
         },
@@ -2716,17 +2492,6 @@ function createHighway() {
          */
         setNoteStateProvider(fn) { hwState._noteStateProvider = (typeof fn === 'function') ? fn : null; },
         getNoteStateProvider() { return hwState._noteStateProvider; },
-        // Install one synchronous provider for this highway. The capability
-        // domain owns registration and selection; null clears the provider.
-        setChartTransform(p) {
-            hwState._xfProvider = (p && typeof p.transform === 'function')
-                ? { id: String(p.id || 'anonymous'), transform: p.transform }
-                : null;
-            _restageChartTransform();
-        },
-        getChartTransform() { return hwState._xfProvider; },
-        // Re-run the installed provider (e.g. its target settings changed).
-        refreshChartTransform() { _restageChartTransform(); },
         /** Current per-string base colors (copy). Index 0..7. */
         getStringColors() { return hwState.STRING_COLORS.slice(); },
         /**
@@ -2813,7 +2578,7 @@ function createHighway() {
             localStorage.setItem('showFingerHints', String(hwState._showFingerHints));
         },
 
-        reconnect(filename, arrangement, drumPart) {
+        reconnect(filename, arrangement) {
             // Close old WS but keep audio + animation running
             if (hwState.ws) { hwState.ws.close(); hwState.ws = null; }
             hwState.ready = false;
@@ -2834,16 +2599,9 @@ function createHighway() {
             hwState._filteredAnchors = null;
             hwState._filteredHandShapes = null;
             hwState._phrasesHaveHandShapes = false;
-            // Keep _xfProvider (persists across songs); drop staged output.
-            _clearChartTransformStage();
             _resetChordRenderState();
             const wsParams = new URLSearchParams();
             if (arrangement !== undefined) wsParams.set('arrangement', arrangement);
-            // Multiple drum parts (feedpak 1.17.0 "drums as arrangements"):
-            // carry the selected part id so the WS streams ITS drum tab. Empty
-            // / undefined → the primary part (server default), i.e. today's
-            // one-drum behavior for any pack the picker never touched.
-            if (drumPart) wsParams.set('drum_part', drumPart);
             let namingMode = 'smart';
             if (typeof window._getArrangementNamingMode === 'function') {
                 const v = window._getArrangementNamingMode();
@@ -2938,11 +2696,6 @@ function createHighway() {
          */
         isDefaultRenderer() { return hwState._renderer === _defaultRenderer || hwState._renderer == null; },
     };
-    // Let cross-instance coordinators discover this highway.
-    if (window.feedBack && typeof window.feedBack.emit === 'function') {
-        try { window.feedBack.emit('highway:created', { highway: api }); }
-        catch (e) { console.error('highway:created emit:', e); }
-    }
     return api;
 }
 const highway = createHighway();

static/js/blob-io.js

@@ -1,28 +0,0 @@
-// Blob export helpers — the download idiom that used to be duplicated in
-// settings-io.js and diagnostics-export.js, plus image-to-clipboard for
-// shareable cards/posters. A LEAF module: imports nothing. Classic-script
-// plugins reach it via dynamic import('/static/js/blob-io.js').
-
-export function downloadBlob(blob, filename) {
-    const url = URL.createObjectURL(blob);
-    const a = document.createElement('a');
-    a.href = url;
-    a.download = filename;
-    document.body.appendChild(a);
-    a.click();
-    document.body.removeChild(a);
-    URL.revokeObjectURL(url);
-}
-
-// Copy an image blob to the system clipboard. Returns true on success, false
-// when the Clipboard API is unavailable or refuses (insecure context, no user
-// gesture, permission denied) — callers fall back to downloadBlob and say so.
-export async function copyImageBlob(blob) {
-    try {
-        if (!navigator.clipboard || typeof ClipboardItem === 'undefined') return false;
-        await navigator.clipboard.write([new ClipboardItem({ [blob.type || 'image/png']: blob })]);
-        return true;
-    } catch (_) {
-        return false;
-    }
-}

static/js/count-in.js

@@ -1,4 +1,4 @@
-// Count-in — the one-bar click before playback, plus the song-credits overlay that
+// Count-in — the 1-2-3-4 click before playback, plus the song-credits overlay that
 // shares its lifecycle and timers.
 //
 // The third slice out of app.js's strongly-connected core, and the first that had to
@@ -40,75 +40,6 @@ export function playClick(high = false) {
     osc.stop(_audioCtx.currentTime + 0.08);
 }
 
-// ── How many clicks lead into `startT` ──────────────────────────────────
-// One bar, derived from the song_timeline beats: `window.highway.getBeats()`
-// is the only meter data the frontend holds (the `time_signatures` map is
-// streamed to plugins, not stored here). Beats carry `measure >= 0` on
-// downbeats, so the gap between consecutive downbeats IS the bar length —
-// which is why a 3/4 song no longer gets four clicks.
-//
-// A first bar shorter than that is a pickup (anacrusis), and the count is
-// shortened by its length so the music enters on its real beat: a 1-beat
-// pickup in 4/4 counts "1 2 3" and the pickup lands on 4. Counting a full
-// four there puts the pickup where the downbeat belongs, and the player comes
-// in a beat late for the whole song.
-export function countInBeats(startT) {
-    const DEFAULT = 4;   // pre-chart, synthetic highway (minigames), or no beats
-    let beats = null;
-    try {
-        if (window.highway && typeof window.highway.getBeats === 'function') {
-            beats = window.highway.getBeats();
-        }
-    } catch (_) { /* fall through to the default */ }
-    if (!Array.isArray(beats) || beats.length < 2) return DEFAULT;
-
-    const downbeats = [];
-    for (let i = 0; i < beats.length; i++) {
-        if (beats[i] && beats[i].measure >= 0) downbeats.push(i);
-    }
-    if (downbeats.length < 2) return DEFAULT;
-
-    // Bar length = the most common gap between downbeats. The mode rather than
-    // the first gap: it ignores a short pickup bar and a short final bar, and
-    // survives an isolated meter change mid-song. The beats trailing the last
-    // downbeat count as a candidate too — otherwise a song of pickup + one bar
-    // offers only the pickup's own gap and the count collapses to it.
-    const gapCounts = new Map();
-    const addGap = (gap) => gapCounts.set(gap, (gapCounts.get(gap) || 0) + 1);
-    for (let k = 1; k < downbeats.length; k++) {
-        addGap(downbeats[k] - downbeats[k - 1]);
-    }
-    addGap(beats.length - downbeats[downbeats.length - 1]);
-    let barLen = DEFAULT;
-    let bestCount = 0;
-    for (const [gap, n] of gapCounts) {
-        // Tie → the longer bar: a pickup's short gap must not outvote the
-        // real meter when the song is too short to repeat it.
-        if (n > bestCount || (n === bestCount && gap > barLen)) {
-            barLen = gap;
-            bestCount = n;
-        }
-    }
-
-    // The beat playback resumes on. The 50 ms tolerance matches the seek
-    // precision the loop-wrap path already assumes.
-    const startIdx = beats.findIndex(b => b && b.time >= startT - 0.05);
-    if (startIdx === -1) return barLen;                  // past the last beat
-    if (!(beats[startIdx].measure >= 0)) return barLen;  // resuming mid-bar
-
-    const nextDownbeat = downbeats.find(d => d > startIdx);
-    if (nextDownbeat === undefined) return barLen;       // the last downbeat
-    const thisBar = nextDownbeat - startIdx;
-    if (thisBar <= 0) return barLen;
-
-    // Only the song's FIRST bar can be a pickup. A short bar anywhere else is
-    // a meter change (or a truncated final bar), and counting it as a pickup
-    // would leave almost no count-in at all — so elsewhere we simply count
-    // that bar's own length, which is also what a mid-song meter change wants.
-    if (startIdx === downbeats[0] && thisBar < barLen) return barLen - thisBar;
-    return thisBar;
-}
-
 let _countingIn = false;
 let _countOverlay = null;
 // Generation token so teardown can cancel an in-progress count-in. Each
@@ -342,15 +273,12 @@ export async function startCountIn(opts = {}) {
     function beginCount() {
         const bpm = window.highway.getBPM(loopA);
         const beatInterval = 60 / bpm;
-        // One bar of the meter at loop A (a short bar there is counted short,
-        // same as the song-start pickup).
-        const clicks = countInBeats(loopA);
         let count = 0;
 
         function tick() {
             if (gen !== _countInGen) return; // teardown mid-count
             count++;
-            if (count > clicks) {
+            if (count > 4) {
                 hideCountOverlay();
                 _countingIn = false;
                 if (window._juceMode) {
@@ -392,7 +320,7 @@ export async function startCountIn(opts = {}) {
     }
 }
 
-// Start-of-song count-in: a one-bar click before playback begins, gated by the
+// Start-of-song count-in: a 4-beat click before playback begins, gated by the
 // "Countdown before song" setting (Gameplay tab). Mirrors the loop count-in's
 // overlay + click + gen-token cancellation, but counts from the song's current
 // position (0 at song start) with no loop A/B rewind. startCountIn() is loop-
@@ -412,15 +340,14 @@ export async function startSongCountIn() {
     if (gen !== _countInGen) return; // teardown during pause
     const startT = S.lastAudioTime || 0;
     let bpm = window.highway.getBPM(startT);
-    // Pre-chart / malformed-tempo fallback: 120 BPM (500 ms per beat).
+    // Pre-chart / malformed-tempo fallback: 4 beats at 120 BPM (500 ms each).
     if (!Number.isFinite(bpm) || bpm <= 0) bpm = 120;
     const beatInterval = 60 / bpm;
-    const clicks = countInBeats(startT);
     let count = 0;
     function tick() {
         if (gen !== _countInGen) return; // teardown mid-count
         count++;
-        if (count > clicks) {
+        if (count > 4) {
             hideCountOverlay();
             _countingIn = false;
             // Hand off to the normal play path — togglePlay() flips isPlaying,

static/js/diagnostics-export.js

@@ -21,8 +21,6 @@
 //      redact toggles.
 //   3. Stream the returned zip to disk.
 
-import { downloadBlob } from './blob-io.js';
-
 function _diagIncludeFromUI() {
     const v = (id) => document.getElementById(id)?.checked !== false;
     return {
@@ -267,7 +265,14 @@ export async function exportDiagnostics() {
     }
     try {
         const blob = await resp.blob();
-        downloadBlob(blob, filename);
+        const url = URL.createObjectURL(blob);
+        const a = document.createElement('a');
+        a.href = url;
+        a.download = filename;
+        document.body.appendChild(a);
+        a.click();
+        document.body.removeChild(a);
+        URL.revokeObjectURL(url);
         status.textContent = `Exported ${filename}`;
     } catch (e) {
         status.textContent = `Export failed during download: ${e.message}`;

static/js/highway-draw.js

@@ -400,9 +400,8 @@ export function drawSustains(hwState, W, H) {
     // Same master-difficulty fallback as drawNotes/drawChords —
     // without this, sustain bars for filtered-out notes would
     // still render, leaving orphan rectangles where no note head
-    // is drawn. An active chart transform substitutes its staged view.
-    const src = hwState._xfNotes !== null ? hwState._xfNotes
-        : hwState._filteredNotes !== null ? hwState._filteredNotes : hwState.notes;
+    // is drawn.
+    const src = hwState._filteredNotes !== null ? hwState._filteredNotes : hwState.notes;
     for (const n of src) {
         if (n.sus <= 0.01) continue;
         const end = n.t + n.sus;
@@ -502,9 +501,7 @@ export function drawNotes(hwState, W, H) {
     // phrase-level ladder data, render from the mastery-filtered
     // array. _filteredNotes stays null for slider-disabled sources
     // so rendering falls through to the flat notes array unchanged.
-    // An active chart transform (_xfNotes) substitutes its staged view.
-    const src = hwState._xfNotes !== null ? hwState._xfNotes
-        : hwState._filteredNotes !== null ? hwState._filteredNotes : hwState.notes;
+    const src = hwState._filteredNotes !== null ? hwState._filteredNotes : hwState.notes;
     // Binary search for visible range
     const tMin = hwState.currentTime - 0.25;
     const tMax = hwState.currentTime + VISIBLE_SECONDS;
@@ -652,8 +649,7 @@ export function drawUnisonBends(hwState, W, H, drawnNotes) {
 export function drawChords(hwState, W, H) {
     // See drawNotes — _filteredChords is null for slider-disabled
     // sources so we fall through to the flat chords array.
-    const src = hwState._xfChords !== null ? hwState._xfChords
-        : hwState._filteredChords !== null ? hwState._filteredChords : hwState.chords;
+    const src = hwState._filteredChords !== null ? hwState._filteredChords : hwState.chords;
     _ensureChordRenderCache(hwState, src);
 
     const tMin = hwState.currentTime - 0.25;
@@ -678,7 +674,7 @@ export function drawChords(hwState, W, H) {
         const actualSpread = Math.max(spread, minSpread);
         const actualTotalH = actualSpread * Math.max(0, sorted.length - 1);
 
-        const { tmpl, getTemplateFret } = getChordTemplateInfo(ch.id, _effChordTemplates(hwState));
+        const { tmpl, getTemplateFret } = getChordTemplateInfo(ch.id, hwState.chordTemplates);
         const hasNonZero = nonZeroNotes.length >= 1;
 
         const frameLeftFret = baseFret;
@@ -1128,22 +1124,15 @@ export function getChordTemplateInfo(chordId, chordTemplates) {
     return { tmpl, tmplFrets, getTemplateFret, isOpen };
 }
 
-// Effective chord templates: an active chart transform substitutes its
-// re-indexed table (identity change also invalidates the render cache).
-export function _effChordTemplates(hwState) {
-    return hwState._xfChordTemplates !== null ? hwState._xfChordTemplates : hwState.chordTemplates;
-}
-
 // Build _chordRenderInfo for every chord in `src` if the cache is stale.
 // Two passes over the array: chain bounds, then base-fret resolution
 // (which can read previous chord's cached baseFret).
 export function _ensureChordRenderCache(hwState, src) {
-    const effTemplates = _effChordTemplates(hwState);
-    const templatesChanged = hwState._chordRenderCacheTemplates !== effTemplates;
+    const templatesChanged = hwState._chordRenderCacheTemplates !== hwState.chordTemplates;
     if (hwState._chordRenderCacheSrc === src && hwState._chordRenderCacheInverted === hwState._inverted && !templatesChanged) return;
     hwState._chordRenderCacheSrc = src;
     hwState._chordRenderCacheInverted = hwState._inverted;
-    hwState._chordRenderCacheTemplates = effTemplates;
+    hwState._chordRenderCacheTemplates = hwState.chordTemplates;
     // Templates feed isOpen() — when they land after `chords`,
     // _updateFretLinePreview's stashed open/non-open classification
     // for the currently-active chord is also stale. It only refreshes
@@ -1199,7 +1188,7 @@ export function _ensureChordRenderCache(hwState, src) {
     for (let i = 0; i < src.length; i++) {
         const ch = src[i];
         const info = hwState._chordRenderInfo.get(ch);
-        const { isOpen } = getChordTemplateInfo(ch.id, effTemplates);
+        const { isOpen } = getChordTemplateInfo(ch.id, hwState.chordTemplates);
         const sortedNotes = [...ch.notes].sort((a, b) => hwState._inverted ? b.s - a.s : a.s - b.s);
         const nonZero = sortedNotes.filter(cn => !isOpen(cn));
         const nonZeroFrets = nonZero.map(cn => cn.f);
@@ -1259,7 +1248,7 @@ export function _updateFretLinePreview(hwState, src, lo, hi) {
             ch.t > bestChordTime) {
             bestChordTime = ch.t;
             activeChord = ch;
-            const { isOpen } = getChordTemplateInfo(ch.id, _effChordTemplates(hwState));
+            const { isOpen } = getChordTemplateInfo(ch.id, hwState.chordTemplates);
             const nonZero = ch.notes.filter(cn => !isOpen(cn));
             activeNotesOnFret = nonZero.length >= 1 ? nonZero.map(cn => ({ s: cn.s, f: cn.f })) : [];
         }
@@ -1271,7 +1260,7 @@ export function _updateFretLinePreview(hwState, src, lo, hi) {
             const p = project(ch.t - hwState.currentTime);
             if (!p) continue;
             activeChord = ch;
-            const { isOpen } = getChordTemplateInfo(ch.id, _effChordTemplates(hwState));
+            const { isOpen } = getChordTemplateInfo(ch.id, hwState.chordTemplates);
             const nonZero = ch.notes.filter(cn => !isOpen(cn));
             activeNotesOnFret = nonZero.length >= 1 ? nonZero.map(cn => ({ s: cn.s, f: cn.f })) : [];
             break;

static/js/library.js

@@ -410,51 +410,6 @@ function _applyLibraryProviderToParams(params) {
     return params;
 }
 
-// ── Instrument-aware tuning (the bass-player tuning-filter report) ───────────
-// A song's bass chart is often tuned differently from its guitar chart, so the
-// tuning facet, the `tunings` filter, the tuning sort and the row's tuning
-// badge must all speak for the instrument the player actually plays. Read the
-// host's working-tuning capability (the live selection, seeded from
-// /api/settings at boot) rather than adding another settings fetch; hosts
-// without the capability keep the guitar behaviour.
-const _LIB_PERSPECTIVES = ['guitar-lead', 'guitar-rhythm', 'bass'];
-let _libSettingsProfile = '';
-
-export function _setLibraryProfile(profileId) {
-    _libSettingsProfile = _LIB_PERSPECTIVES.includes(profileId) ? profileId : '';
-}
-
-export function _libraryInstrument() {
-    // The PROFILE is the only three-valued source (lead / rhythm / bass); the
-    // working-tuning capability knows guitar-vs-bass but not lead-vs-rhythm,
-    // so it is only the fallback.
-    if (_libSettingsProfile) return _libSettingsProfile;
-    try {
-        const wt = window.feedBack?.workingTuning;
-        if (wt && typeof wt.get === 'function') {
-            const cur = wt.get();
-            if (cur?.instrument === 'bass') return 'bass';
-        }
-    } catch { /* capability absent/erroring — lead guitar is the safe default */ }
-    return 'guitar-lead';
-}
-
-export function _libraryInstrumentLabel() {
-    const p = _libraryInstrument();
-    return p === 'bass' ? 'bass' : p === 'guitar-rhythm' ? 'rhythm' : 'lead';
-}
-
-// The tuning a row should SHOW: the bass chart's for a bass player, falling
-// back to the song (guitar-derived) tuning when the song has no bass
-// arrangement — the common case, not an edge path.
-function _rowTuningRaw(song) {
-    const p = _libraryInstrument();
-    const field = p === 'bass' ? 'bass_tuning_name'
-        : p === 'guitar-rhythm' ? 'rhythm_tuning_name' : '';
-    if (field && song[field]) return song[field];
-    return song.tuning || song.tuning_name || '';
-}
-
 export function _resetLibraryProviderViewState() {
     L.libEpoch++;
     L.currentPage = 0;
@@ -813,8 +768,6 @@ export function _applyLibFiltersToParams(params) {
     if (_libFilters.stemsLacks.length) params.set('stems_lacks', _libFilters.stemsLacks.join(','));
     if (_libFilters.lyrics !== null) params.set('has_lyrics', String(_libFilters.lyrics));
     if (_libFilters.tunings.length) params.set('tunings', _libFilters.tunings.join(','));
-    // Which instrument's tuning the `tunings` filter + the tuning sort read.
-    if (_libraryInstrument() !== 'guitar-lead') params.set('instrument', _libraryInstrument());
     return params;
 }
 
@@ -898,7 +851,6 @@ async function _renderTuningList() {
         c.innerHTML = '<div class="text-xs text-gray-500 px-2">Loading...</div>';
         try {
             const params = _applyLibraryProviderToParams(new URLSearchParams());
-            params.set('instrument', _libraryInstrument());
             const resp = await fetch(`/api/library/tuning-names?${params}`);
             if (!resp.ok) throw new Error(`HTTP ${resp.status}`);
             const data = await resp.json();
@@ -917,11 +869,6 @@ async function _renderTuningList() {
             fetchError = e.message || 'request failed';
         }
     }
-    // NAME the perspective: silent instrument-following is the original bug in
-    // a new place — the user must be able to see which instrument these
-    // tunings describe.
-    const labelEl = document.getElementById('filter-tunings-label');
-    if (labelEl) labelEl.textContent = `Tuning (${_libraryInstrumentLabel()})`;
     c.innerHTML = '';
     if (fetchError) {
         c.innerHTML = `<div class="text-xs text-red-400 px-2">Failed to load tunings (${esc(fetchError)}). Reopen the drawer to retry.</div>`;
@@ -947,17 +894,10 @@ async function _renderTuningList() {
         const checked = _libFilters.tunings.includes(val);
         const row = document.createElement('label');
         row.className = 'tuning-row';
-        // Be honest about the fallback: songs with no bass arrangement borrow
-        // the guitar chart's tuning, and that must be visible rather than
-        // presented as a measured bass tuning.
-        const inferred = t.inferred_count || 0;
-        if (inferred) {
-            row.title = `${inferred} of ${t.count} inferred from the guitar chart (no bass arrangement)`;
-        }
         row.innerHTML =
             `<input type="checkbox" ${checked ? 'checked' : ''} class="rounded border-gray-600 bg-dark-700 text-accent">` +
             `<span class="flex-1">${esc(label)}</span>` +
-            `<span class="tuning-count">${t.count}${inferred ? ` (${inferred}~)` : ''}</span>`;
+            `<span class="tuning-count">${t.count}</span>`;
         const cb = row.querySelector('input');
         cb.onchange = () => {
             const i = _libFilters.tunings.indexOf(val);
@@ -1304,10 +1244,6 @@ export function renderGridCards(songs, containerId = 'lib-grid', mode = 'replace
         const duration = song.duration ? formatTime(song.duration) : '';
         const tuningRaw = song.tuning || song.tuning_name || '';
         const tuning = displayTuningName(tuningRaw);
-        // The BADGE follows the player's instrument; `tuning` above stays the
-        // song's guitar-derived tuning because the retune action below rewrites
-        // the chart to E Standard and must not key on the bass part.
-        const tuningBadge = displayTuningName(_rowTuningRaw(song));
         const artUrl = _librarySongArtUrl(song, providerId);
         const isLocalProvider = _isLocalLibraryProvider(providerId);
         const isSloppak = song.format === 'sloppak';
@@ -1363,7 +1299,7 @@ export function renderGridCards(songs, containerId = 'lib-grid', mode = 'replace
                 </div>
                 <div class="flex items-center flex-wrap gap-1.5 mt-3 text-xs">
                     ${(() => { const _nm = _getArrangementNamingMode(); return (song.arrangements || []).map(a => _arrangementBadgeHtml(a, _nm)).join(''); })()}
-                    ${tuningBadge ? `<span class="px-1.5 py-0.5 rounded ${tuningBadge === 'E Standard' ? 'bg-green-900/30 text-green-400' : 'bg-yellow-900/30 text-yellow-400'}">${esc(tuningBadge)}</span>` : ''}
+                    ${tuning ? `<span class="px-1.5 py-0.5 rounded ${tuning === 'E Standard' ? 'bg-green-900/30 text-green-400' : 'bg-yellow-900/30 text-yellow-400'}">${esc(tuning)}</span>` : ''}
                     ${song.has_lyrics ? `<span class="px-1.5 py-0.5 bg-purple-900/30 rounded text-purple-300">Lyrics</span>` : ''}
                     ${song.user_difficulty != null ? `<span class="px-1.5 py-0.5 bg-blue-900/30 rounded text-blue-300" title="Your difficulty rating">◆${esc(song.user_difficulty)}</span>` : ''}
                     ${duration ? `<span class="text-gray-600">${duration}</span>` : ''}
@@ -1534,9 +1470,6 @@ export async function renderTreeInto(containerId, countId, stats, letter, q, fav
                 const duration = song.duration ? formatTime(song.duration) : '';
                 const tuningRaw = song.tuning || song.tuning_name || '';
                 const tuning = displayTuningName(tuningRaw);
-                // Badge follows the player's instrument; the retune action below
-                // keeps operating on the song's guitar-derived tuning.
-                const tuningBadge = displayTuningName(_rowTuningRaw(song));
                 const isLocalProvider = _isLocalLibraryProvider(providerId);
                 const isSloppak = song.format === 'sloppak';
                 const stdRetune = isLocalProvider && localFilename && !isSloppak && tuningRaw && !song.has_estd &&
@@ -1563,8 +1496,8 @@ export async function renderTreeInto(containerId, countId, stats, letter, q, fav
                 { const _nm = _getArrangementNamingMode();
                   for (const arrangement of (song.arrangements || []))
                       html += _arrangementBadgeHtml(arrangement, _nm); }
-                if (tuningBadge)
-                    html += `<span class="px-1.5 py-0.5 rounded ${tuningBadge === 'E Standard' ? 'bg-green-900/30 text-green-400' : 'bg-yellow-900/30 text-yellow-400'}">${esc(tuningBadge)}</span>`;
+                if (tuning)
+                    html += `<span class="px-1.5 py-0.5 rounded ${tuning === 'E Standard' ? 'bg-green-900/30 text-green-400' : 'bg-yellow-900/30 text-yellow-400'}">${esc(tuning)}</span>`;
                 if (song.has_lyrics)
                     html += `<span class="px-1.5 py-0.5 bg-purple-900/30 rounded text-purple-300">Lyrics</span>`;
                 if (song.user_difficulty != null)

static/js/session.js

@@ -638,18 +638,9 @@ export let artAbortController = null;
 export async function playSong(filename, arrangement, options) {
     console.log('playSong called:', filename);
     // A manual (non-queue) play abandons any active play-queue, so a stale queue
-    // can't hijack the next song's end. The queue signals a play it is DRIVING
-    // two ways: options.fromQueue (in-band) and _consumeInternalPlay() (out-of-
-    // band). The out-of-band one exists because plugin playSong wrappers forward
-    // only (filename, arrangement) and drop the options object — with just the
-    // in-band flag, the queue cleared itself the instant its first song played
-    // and a gig never advanced. Consume the flag whether or not we go on to clear,
-    // so it can't leak into a later manual play.
-    const _pq = window.feedBack && window.feedBack.playQueue;
-    const _queueDriven = (options && options.fromQueue)
-        || (_pq && typeof _pq._consumeInternalPlay === 'function' && _pq._consumeInternalPlay());
-    if (!_queueDriven && _pq) {
-        _pq.clear();
+    // can't hijack the next song's end. The queue passes fromQueue to keep itself.
+    if ((!options || !options.fromQueue) && window.feedBack && window.feedBack.playQueue) {
+        window.feedBack.playQueue.clear();
     }
     if (!options || options.bridge !== false) {
         _recordPlaybackBridge('playback.window-play-song', 'window.playSong', 'legacy playSong entry point used');

static/js/settings-io.js

@@ -1,6 +1,6 @@
 // Settings backup — the export / import bundle.
 //
-// Carved verbatim out of static/app.js (R3a). Imports only the blob-io leaf.
+// Carved verbatim out of static/app.js (R3a). A LEAF module: imports nothing.
 //
 // Two entry points, both inline handlers on the Settings screen, so app.js keeps
 // re-exposing them on window. The import is two-phase (server first, atomic; then
@@ -29,8 +29,6 @@
 // phase 2; the localStorage side is best-effort merge after server
 // success. Failures are reported, never silenced.
 
-import { downloadBlob } from './blob-io.js';
-
 export async function exportSettings() {
     const status = document.getElementById('backup-status');
     status.textContent = 'Exporting...';
@@ -68,7 +66,14 @@ export async function exportSettings() {
             if (match) filename = match[1];
         }
         const blob = new Blob([JSON.stringify(bundle, null, 2)], { type: 'application/json' });
-        downloadBlob(blob, filename);
+        const url = URL.createObjectURL(blob);
+        const a = document.createElement('a');
+        a.href = url;
+        a.download = filename;
+        document.body.appendChild(a);
+        a.click();
+        document.body.removeChild(a);
+        URL.revokeObjectURL(url);
         status.textContent = `Exported ${filename}`;
     } catch (e) {
         status.textContent = `Export failed: ${e.message}`;

static/js/settings.js

@@ -18,7 +18,7 @@
 // back-import would close a cycle. player-controls keeps reading it through the host seam, and
 // app.js — the root, which imports both — wires it. That is exactly what the seam is for.
 import { hwcInitSettingsUI } from './highway-colors.js';
-import { _getArrangementNamingMode, _setLibraryProfile } from './library.js';
+import { _getArrangementNamingMode } from './library.js';
 import {
     _applyMastery, _autoplayExitEnabled, _exitConfirmEnabled, _showUpNextEnabled,
 } from './player-controls.js';
@@ -100,7 +100,6 @@ export async function loadSettings() {
     // failed fetch below still leaves the desktop updater wired up.
     // setupAppUpdates() is idempotent via _appUpdatesWired.
     setupAppUpdates();
-    setupWindowOptions();
     const resp = await fetch('/api/settings');
     const data = await resp.json();
     // Null-guard the form fields: on the v3 tabbed settings page the markup is
@@ -111,10 +110,6 @@ export async function loadSettings() {
     if (dlcEl) dlcEl.value = data.dlc_dir || '';
     _defaultArrangement = data.default_arrangement || '';
     _syncDefaultArrangementSelect(_defaultArrangement);
-    // Feed the library its tuning PERSPECTIVE (lead / rhythm / bass) — the
-    // tuning facet, filter, sort and badges all answer for the profile the
-    // player actually plays.
-    _setLibraryProfile(data.active_instrument_profile);
     const pathwayEl = document.getElementById('setting-instrument-pathway');
     if (pathwayEl) pathwayEl.value = _normalizeInstrumentPathway(data.pathway);
     const demucsEl = document.getElementById('demucs-server-url');
@@ -172,107 +167,9 @@ export async function loadSettings() {
     hwcInitSettingsUI();
 }
 
-// ── Window options (desktop-only) ────────────────────────────────────────
-// Desktop-only window preferences (start-in-fullscreen, …). The whole block
-// stays hidden in the plain web / Docker app; unhide + wire only when the
-// feedBack-desktop bridge (window.feedBackDesktop.window) exposes the getter
-// and setter. Persistence lives desktop-side because only the Electron main
-// process can read the pref at window-creation time — core just proxies.
-export let _windowOptionsWired = false;
-
-export function setupWindowOptions() {
-    const block = document.getElementById('window-options-block');
-    if (!block) return;
-    const winApi = window.feedBackDesktop?.window;
-    // Per-method capability check: a partial/older bridge may expose `window`
-    // without this shape. Leave the block hidden rather than half-wiring it.
-    if (!winApi
-        || typeof winApi.getStartFullscreen !== 'function'
-        || typeof winApi.setStartFullscreen !== 'function') {
-        return;
-    }
-
-    block.classList.remove('hidden');
-
-    const cb = document.getElementById('setting-start-fullscreen');
-    if (!cb) return;
-
-    // Hydrate from the desktop-persisted value. The getter may be sync or
-    // async (IPC round-trip); Promise.resolve normalises both.
-    Promise.resolve(winApi.getStartFullscreen()).then(function (on) {
-        cb.checked = !!on;
-    }).catch(function () { /* leave unchecked on error */ });
-
-    // Guard only the listener against double-binding; unhide + re-hydrate
-    // stay idempotent so re-entering Settings refreshes the checkbox.
-    if (!_windowOptionsWired) {
-        _windowOptionsWired = true;
-        cb.addEventListener('change', function () {
-            try { winApi.setStartFullscreen(cb.checked); } catch (_) { /* best-effort */ }
-        });
-    }
-}
-
-export const APP_UPDATE_CHANNELS = ['stable', 'rc', 'beta', 'alpha', 'nightly'];
+export const APP_UPDATE_CHANNELS = ['stable', 'rc', 'beta', 'alpha'];
 
 export let _appUpdatesWired = false;
-// Poll handle for the active-download watcher (module-scoped so re-running
-// setupAppUpdates on a panel re-render never stacks a second poll).
-let _appUpdatePollTimer = null;
-// Last channel main actually acknowledged (initial sync or a successful
-// user switch). Used to revert the dropdown/localStorage if a switch fails,
-// so the UI/persisted state can never end up ahead of the real updater state.
-let _appUpdateAckedChannel = null;
-// Last [update-diag] renderFrom line logged, so the ~1.5s download poll (and
-// repeated no-op re-renders) don't flood the diagnostics ring buffer with
-// byte-identical lines and evict genuinely useful trace. Every real state or
-// percent change still differs and logs; the structured contribute() snapshot
-// (with its own ts) is unconditional, so liveness is never lost.
-let _appUpdateLastRenderLog = null;
-
-// Pure status → view model for the App-updates panel. DOM-free and exported so
-// the button/channel/text state machine can be unit-tested without a browser;
-// renderFrom() applies the returned shape to the DOM. `canApply` is whether the
-// bridge exposes apply() (older bridges fall back to text-only), `fmtTimestamp`
-// formats the "last checked" time, `channelValue` is the dropdown's fallback
-// when the status omits a channel.
-export function _appUpdateStatusView(s, { channelValue, canApply = true, fmtTimestamp = (t) => String(t) } = {}) {
-    if (!s) return { kind: 'unavailable' };
-    if (s.status === 'unsupported' || s.platform === 'linux') return { kind: 'unsupported' };
-    const base = `Version ${s.currentVersion || '?'} · ${s.channel || channelValue}`;
-    let action;
-    let btnLabel = 'Check for updates';
-    let btnMode = 'check';
-    let btnDisabled = false;
-    // Lock the channel selector only while a check/download is in flight —
-    // switching mid-operation abandons it. Enabled for every other status.
-    const channelDisabled = s.status === 'checking' || s.status === 'downloading';
-    switch (s.status) {
-        case 'checking':
-            action = 'checking for updates…';
-            btnDisabled = true;
-            break;
-        case 'downloading': {
-            const pct = typeof s.percent === 'number' ? s.percent : null;
-            action = pct === null ? 'update available — downloading…' : `downloading update… ${pct}%`;
-            btnDisabled = true;
-            break;
-        }
-        case 'downloaded':
-            action = 'update ready';
-            if (canApply) { btnLabel = 'Restart now'; btnMode = 'restart'; }
-            else { action = 'update ready — restart to apply'; }
-            break;
-        case 'error':
-            action = s.message ? `update error: ${s.message}` : 'update check failed';
-            break;
-        case 'idle':
-        default:
-            action = `up to date · last checked ${fmtTimestamp(s.lastChecked)}`;
-            break;
-    }
-    return { kind: 'status', line: `${base} · ${action}`, btnLabel, btnMode, btnDisabled, channelDisabled };
-}
 
 export function setupAppUpdates() {
     const block = document.getElementById('app-updates-block');
@@ -305,29 +202,13 @@ export function setupAppUpdates() {
     try { storedRaw = localStorage.getItem('feedBack-update-channel') || localStorage.getItem('slopsmith-update-channel'); } catch (_) { /* fall through */ }
     const stored = APP_UPDATE_CHANNELS.includes(storedRaw) ? storedRaw : 'stable';
     channelSelect.value = stored;
-    _appUpdateAckedChannel = stored;
 
-    // Diagnostic: every entry into this function, with whether the one-time
-    // sync gate has already fired. _appUpdatesWired is a MODULE-level `let`,
-    // so it only resets to false on a genuine fresh evaluation of this
-    // script (a real page reload/navigation) — not on loadSettings() simply
-    // being called again within the same page. A second "wired=false" in one
-    // exported log is direct proof of a reload; a series of "wired=true"
-    // entries proves it's just repeated Settings-panel visits (harmless).
-    console.log('[update-diag] setupAppUpdates() entered', JSON.stringify({ wired: _appUpdatesWired, stored }));
+    const isLinux = window.feedBackDesktop?.platform === 'linux';
 
     function showLinuxFallback(message) {
-        // Deliberately leaves channelSelect ENABLED: on Linux "unsupported"
-        // usually just means "the channel isn't Nightly yet", and the dropdown
-        // is the only way to switch to Nightly. Disabling it would trap the
-        // user on whatever channel they booted with. Only the check button and
-        // the note reflect the unsupported state.
         if (linuxNote) linuxNote.classList.remove('hidden');
+        channelSelect.disabled = true;
         checkBtn.disabled = true;
-        // Reset the button out of any leftover "Restart now" state (e.g. an
-        // update was staged on nightly, then the user switched channels).
-        checkBtn.textContent = 'Check for updates';
-        checkBtn.dataset.mode = 'check';
         statusEl.textContent = message || 'Auto-update is not available on this platform.';
     }
 
@@ -339,140 +220,61 @@ export function setupAppUpdates() {
         } catch (_) { return 'never'; }
     }
 
-    // Render one status object. Always keeps the current version + channel
-    // visible and appends what's happening, so the download progress never
-    // obscures which build you're on.
-    function renderFrom(s, extra) {
-        // Diagnostic trace: log the raw status object before any branching —
-        // auto-captured by diagnostics.js's console wrap into the exportable
-        // ring buffer, so "Export Diagnostics" in this same Settings → System
-        // panel captures exactly what the app saw and decided, not just what
-        // the UI showed. Deduped so a steady poll doesn't flood the ring buffer
-        // (see _appUpdateLastRenderLog); a real state/percent change differs and
-        // still logs; the structured contribute() snapshot below is unconditional.
-        const logKey = `${JSON.stringify(s)}|${extra || ''}`;
-        if (logKey !== _appUpdateLastRenderLog) {
-            _appUpdateLastRenderLog = logKey;
-            console.log('[update-diag] renderFrom', JSON.stringify(s), extra ? `extra=${extra}` : '');
-        }
-        const view = _appUpdateStatusView(s, {
-            channelValue: channelSelect.value,
-            canApply: typeof updateApi.apply === 'function',
-            fmtTimestamp,
-        });
-        if (view.kind === 'unavailable') { statusEl.textContent = extra || 'Updater status unavailable.'; return; }
-        if (view.kind === 'unsupported') {
-            showLinuxFallback('Auto-update requires the AppImage build on the Nightly channel.');
-            return;
-        }
-        // Healthy for the current channel — clear any "unsupported" UI left
-        // over from a prior channel selection.
-        if (linuxNote) linuxNote.classList.add('hidden');
-        // The button is a little state machine (dataset.mode drives the click
-        // handler's restart-vs-check branch); the channel selector locks only
-        // while a check/download is active. See _appUpdateStatusView.
-        channelSelect.disabled = view.channelDisabled;
-        checkBtn.textContent = view.btnLabel;
-        checkBtn.dataset.mode = view.btnMode;
-        checkBtn.disabled = view.btnDisabled;
-        const line = view.line;
-        statusEl.textContent = extra ? `${extra} · ${line}` : line;
-
-        // Live structured snapshot (overwrites, not a log) via the existing
-        // diagnostics contribute() API — 'audio_engine' is feedBack-desktop's
-        // own registered plugin id, so the server's diagnostics export won't
-        // filter it out. Always current, no scrolling through console history
-        // needed to answer "what does the app think is going on right now."
-        try {
-            window.feedBack?.diagnostics?.contribute('audio_engine', {
-                update: {
-                    channel: s.channel || channelSelect.value,
-                    status: s.status,
-                    currentVersion: s.currentVersion ?? null,
-                    lastChecked: s.lastChecked ?? null,
-                    percent: typeof s.percent === 'number' ? s.percent : null,
-                    message: s.message ?? null,
-                    rendered: line,
-                    ts: Date.now(),
-                },
-            });
-        } catch (_) { /* diagnostics.js not loaded — never let this break rendering */ }
-
-        // A download runs in the background (the check returns immediately), so
-        // poll for the terminal state rather than relying solely on a one-shot
-        // "downloaded" event that could be missed or arrive out of order.
-        if (s.status === 'downloading' || s.status === 'checking') pollWhileBusy();
-    }
-
     function renderStatus(extra) {
         try {
             // Wrap in Promise.resolve so a future getStatus() that returns
             // synchronously won't blow up on .then().
-            void Promise.resolve(updateApi.getStatus())
-                .then((s) => renderFrom(s, extra))
-                .catch((e) => {
-                    console.warn('[updater] getStatus failed:', e);
-                    statusEl.textContent = extra || 'Failed to read updater status.';
-                });
+            void Promise.resolve(updateApi.getStatus()).then((s) => {
+                if (!s) { statusEl.textContent = extra || 'Updater status unavailable.'; return; }
+                if (s.status === 'unsupported' || s.platform === 'linux') {
+                    showLinuxFallback('Auto-update is not available on Linux.');
+                    return;
+                }
+                if (s.status === 'error') {
+                    const errMsg = s.message ? `Update error: ${s.message}` : 'Update check failed.';
+                    statusEl.textContent = extra ? `${extra} · ${errMsg}` : errMsg;
+                    return;
+                }
+                const parts = [
+                    `Version ${s.currentVersion || '?'}`,
+                    `channel ${s.channel || channelSelect.value}`,
+                    `last checked ${fmtTimestamp(s.lastChecked)}`,
+                ];
+                statusEl.textContent = extra ? `${extra} · ${parts.join(' · ')}` : parts.join(' · ');
+            }).catch((e) => {
+                console.warn('[updater] getStatus failed:', e);
+                statusEl.textContent = extra || 'Failed to read updater status.';
+            });
         } catch (e) {
             console.warn('[updater] getStatus threw:', e);
             statusEl.textContent = extra || 'Failed to read updater status.';
         }
     }
 
-    // While a download (or check) is active, re-read the authoritative status
-    // every ~1.5s and stop once it settles (downloaded / idle / error). This is
-    // what guarantees the panel leaves "downloading… 100%" and lands on "update
-    // ready" (or surfaces a swap error) even if the completion event is lost.
-    function pollWhileBusy() {
-        if (_appUpdatePollTimer) return;
-        _appUpdatePollTimer = setInterval(() => {
-            void Promise.resolve(updateApi.getStatus()).then((s) => {
-                renderFrom(s);
-                const st = s && s.status;
-                if (st !== 'downloading' && st !== 'checking') {
-                    clearInterval(_appUpdatePollTimer);
-                    _appUpdatePollTimer = null;
-                }
-            }).catch(() => {
-                clearInterval(_appUpdatePollTimer);
-                _appUpdatePollTimer = null;
-            });
-        }, 1500);
-    }
-
-    // Inform main of the persisted channel — but ONLY the first time this page
-    // wires up, not on every loadSettings() re-render. This used to run
-    // unconditionally on every call and was caught (via Export Diagnostics)
-    // stomping an in-flight check/download: a redundant setChannel() call
-    // mid-download bumps main's checkGeneration and resets progress state,
-    // so the download silently loses its ability to report completion even
-    // though the file swap itself still happens in the background. Once
-    // wired, the channel select's own 'change' handler is the only thing
-    // that needs to tell main about a channel switch.
-    if (!_appUpdatesWired) {
+    if (isLinux) {
+        showLinuxFallback('Auto-update is not available on Linux.');
+        // Keep main informed of the persisted channel even on Linux so
+        // cross-platform reasoning about the channel stays consistent.
+        // setChannel() may return a Promise — chain .catch() so a rejected
+        // promise doesn't surface as an unhandled rejection.
         try {
-            // Render from THIS call's own result (same reasoning as the check
-            // button and the 'change' handler below), not just catch its
-            // errors. The unconditional renderStatus() at the bottom of this
-            // function fires a SEPARATE getStatus() round-trip immediately
-            // after — if that resolves before main has processed this
-            // setChannel() (e.g. main is still on its 'stable' boot default),
-            // the UI would render 'unsupported' and — since this call's own
-            // eventual success was never rendered — get stuck there
-            // permanently, even once main correctly switches channel a moment
-            // later. Rendering here too means whichever of the two calls
-            // resolves LAST wins and shows the true state, regardless of
-            // which order they land in.
-            void Promise.resolve(updateApi.setChannel(stored)).then((result) => {
-                _appUpdateAckedChannel = stored;
-                renderFrom(result);
-            }).catch((e) => {
-                console.warn('[updater] setChannel(initial) failed:', e);
+            void Promise.resolve(updateApi.setChannel(stored)).catch((e) => {
+                console.warn('[updater] setChannel(linux) failed:', e);
             });
         } catch (e) {
-            console.warn('[updater] setChannel(initial) threw:', e);
+            console.warn('[updater] setChannel(linux) threw:', e);
         }
+        return;
+    }
+
+    // Inform main of the persisted channel on each load. setChannel() on
+    // main is idempotent when the channel already matches.
+    try {
+        void Promise.resolve(updateApi.setChannel(stored)).catch((e) => {
+            console.warn('[updater] setChannel(initial) failed:', e);
+        });
+    } catch (e) {
+        console.warn('[updater] setChannel(initial) threw:', e);
     }
 
     if (!_appUpdatesWired) {
@@ -482,82 +284,56 @@ export function setupAppUpdates() {
         channelSelect.addEventListener('change', async () => {
             const val = channelSelect.value;
             if (!APP_UPDATE_CHANNELS.includes(val)) return;
-            console.log('[update-diag] user switched channel to', val);
+            try { localStorage.setItem('feedBack-update-channel', val); localStorage.removeItem('slopsmith-update-channel'); } catch (_) {}
             try {
-                // Render from setChannel()'s own return value (same reasoning
-                // as the check button: it's computed synchronously at the
-                // moment of the switch, so it can't be stale, unlike a
-                // follow-up getStatus() call).
-                const result = await Promise.resolve(updateApi.setChannel(val));
-                // Only persist once main has actually acknowledged the switch —
-                // a failed setChannel() must never leave localStorage (or the
-                // dropdown) ahead of what main is really using.
-                _appUpdateAckedChannel = val;
-                try { localStorage.setItem('feedBack-update-channel', val); localStorage.removeItem('slopsmith-update-channel'); } catch (_) {}
-                renderFrom(result, `Channel set to ${val}.`);
+                // Await setChannel so the status line reflects what actually
+                // happened — rendering "Channel set" unconditionally would
+                // mislead users when the IPC rejects.
+                await Promise.resolve(updateApi.setChannel(val));
+                renderStatus(`Channel set to ${val}.`);
             } catch (e) {
                 console.warn('[updater] setChannel failed:', e);
-                channelSelect.value = _appUpdateAckedChannel ?? 'stable';
                 renderStatus(`Failed to set channel to ${val}: ${e?.message || e}`);
             }
         });
 
         checkBtn.addEventListener('click', async () => {
-            // In restart mode (set by renderFrom once an update is staged) the
-            // button applies the update instead of checking again.
-            if (checkBtn.dataset.mode === 'restart') {
-                console.log('[update-diag] user clicked Restart now');
-                checkBtn.disabled = true;
-                checkBtn.textContent = 'Restarting…';
-                try {
-                    const r = await updateApi.apply();
-                    if (r?.status === 'error') {
-                        console.warn('[updater] apply returned error:', r.message || 'unknown');
-                        renderFrom(r, 'Restart failed.');
-                    }
-                    // On success the app quits + relaunches — nothing to render.
-                } catch (e) {
-                    console.warn('[updater] apply failed:', e);
-                    statusEl.textContent = `Restart failed: ${e?.message || e}`;
-                    checkBtn.textContent = 'Restart now';
-                    checkBtn.disabled = false;
-                }
-                return;
-            }
-            console.log('[update-diag] user clicked Check for updates');
             checkBtn.disabled = true;
             statusEl.textContent = 'Checking for updates…';
-            let result;
+            let reEnableBtn = true;
             try {
-                // The Linux check returns immediately (any download runs in the
-                // background).
-                result = await updateApi.checkNow();
+                const result = await updateApi.checkNow();
+                const status = result?.status || 'unknown';
+                let msg;
+                switch (status) {
+                    case 'idle':
+                        msg = "You're on the newest version in this channel.";
+                        break;
+                    case 'downloading':
+                        msg = 'Update available — downloading…';
+                        break;
+                    case 'downloaded':
+                        msg = 'Update downloaded — restart to apply.';
+                        break;
+                    case 'unsupported':
+                        reEnableBtn = false;
+                        showLinuxFallback('Auto-update is not available on Linux.');
+                        return;
+                    case 'error':
+                        msg = `Update check failed${result?.message ? `: ${result.message}` : '.'}`;
+                        break;
+                    default:
+                        msg = `Update check returned: ${status}`;
+                }
+                renderStatus(msg);
             } catch (e) {
                 console.warn('[updater] checkNow failed:', e);
                 statusEl.textContent = `Update check failed: ${e?.message || e}`;
-                checkBtn.disabled = false;
-                return;
+            } finally {
+                if (reEnableBtn) checkBtn.disabled = false;
             }
-            // Render straight from checkNow()'s own return value rather than a
-            // follow-up getStatus() call. checkNow() computes that value
-            // synchronously at the moment it decides the outcome, so it can't
-            // be stale; a separate getStatus() round-trip right after it can
-            // race with anything that resets state in between (a concurrent
-            // channel switch, another in-flight check settling) and show a
-            // blanked "up to date · last checked never" even though this check
-            // just succeeded.
-            renderFrom(result);
         });
 
-        // Main-process events (checkNow/download decisions in update-manager.ts)
-        // are invisible to this page's console — forward them into it so a
-        // single "Export Diagnostics" click captures both sides of the story.
-        if (typeof updateApi.onDiag === 'function') {
-            updateApi.onDiag((payload) => {
-                console.log('[update-diag:main]', payload?.message, payload?.data ? JSON.stringify(payload.data) : '');
-            });
-        }
-
         _appUpdatesWired = true;
     }