MusicBrainz / Cover-Art-Archive / AcoustID transport, the match-scorer glue, and
the background enrichment worker (~930 lines, 61 defs) leave server.py as one
cohesive unit. Bodies are verbatim; the only changes are seam reads:
meta_db / config_dir / sloppak_cache_dir / art_cache_dir -> appstate.<slot>
_song_pack_art_exists / _art_override_paths (stay in server.py for the art +
delete routes) -> appstate.<callable> (new seam slots, injected by reference)
_env_flag -> env_compat.env_flag_compat (the existing identical helper)
_artist_title_from_filename -> imported from metadata_db (its home)
the User-Agent VERSION lookup: Path(__file__).parent ->
Path(__file__).resolve().parents[1] (lib/enrichment.py -> app root)
server.py drives the worker through the module (import enrichment; the routes +
scan lifecycle call enrichment.X). Tests that faked the network on `server`
(_mb_http_get, _enrich_network_enabled, _caa_http_get, ...) now patch the same
names on `enrichment` — the module attribute is resolved at call time, so one
setattr reaches both the routes and the worker's internal callers. Acyclic:
enrichment imports appstate/appconfig/dlc_paths/metadata_db/mb_match/
acoustid_match/sloppak/loosefolder, never server.
server.py: 6,917 -> 5,988 (-929).
Verified: pyflakes clean (bar the pre-existing File/safe_join/tuning_name/ET);
route table IDENTICAL (143); full pytest 2400 passed (140 enrichment/art cases
incl the offline-safety + transport-error-pauses-pass contracts that fake the
network); test_packaging 44 passed (enrichment.py resolves under lib/); eslint 0.
Boot smoke: /api/enrichment/status + POST /kick serve from the new module.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
4.8 KiB
Size-exemption register
The working norm (constitution Principle II; enforced by the max-lines lint
gate) is no source file over 1,500 lines. A few files are allowed to exceed
it because splitting them would do more harm than good — hot per-frame
renderers, C++, offline generators, cohesive registries. This register is the
list of those exceptions: each row is a deliberate, signed decision with a
ceiling, a rationale, and a review trigger. Without it, "no file over 1,500
without a signed exemption" is unenforceable.
Rules
- One row per file: a ceiling, a rationale, a signer, a review trigger.
- The
max-linesper-file ceilings ineslint.config.jsmirror this table — keep them in sync (this register is canonical). - Files with a scheduled split plan are not exempt — they live in "Planned, not exempt" at the bottom so nothing falls between the two states.
- Signers (decided 2026-07-08): Byron signs core + bundled rows; Christian signs the authored-plugin row (virtuoso, its own repo/track).
Permanent exemptions (structural rationale)
| Repo / file | Lines (7-07) | Ceiling | Rationale | Signer | Review |
|---|---|---|---|---|---|
core static/highway.js → residual renderer-2d.js (post-split) |
~2,400–2,900 est. | 3,000 | 60 fps hot path; no module boundary inside the per-frame loop | Byron | after the highway.js split |
core plugins/highway_3d/ → residual renderer |
sized at split; likely >3,000 | set at split, flagged now | same hot-path rule; the draw core can't be cut without behavior risk | Byron | after the highway_3d split |
core static/capabilities.js |
1,538 | 1,600 | cohesive registry + window.feedBack bus, 38 lines over; a split spends credibility for nothing |
Byron | R4 |
tutorials builtin/reading-the-highway/generate.py |
1,818 | 2,000 | offline content generator, never imported at runtime, deps not in runtime requirements | Byron | if a 3rd builtin pack appears |
desktop src/audio/NodeAddon.cpp |
3,542 | as-is | C++, outside the ESM/routes playbooks; under active use-after-free crash work — do not churn | Byron | after crash-class work settles |
desktop src/audio/AudioEngine.cpp |
2,977 | as-is | same | Byron | same |
desktop src/vst-host/main.cpp |
1,928 | as-is | same | Byron | same |
virtuoso screen.js (authored, own track) |
25,741 | as-is until its own split | authored plugin on a separate roadmap; migrates on its own schedule | Christian | virtuoso split kickoff |
Split-when-touched (no scheduled train; row retires when split)
| Repo / file | Lines | Ceiling | Rationale | Signer | Review |
|---|---|---|---|---|---|
core lib/gp2rs_gpx.py |
2,540 | as-is | import converter, off the serve-path hot loop | Byron | when next touched |
core lib/gp2rs.py |
2,055 | as-is | same | Byron | when next touched |
core lib/song.py |
1,689 | as-is | data models + wire format; cohesive | Byron | when next touched |
core lib/gp_autosync.py |
1,572 | as-is | under active dev (#787/#791) — don't collide | Byron | after in-flight work lands |
core plugins/capability_inspector/screen.js |
1,752 | as-is | bundled diagnostics plugin, low churn | Byron | when next touched |
core plugins/folder_library/screen.js |
1,672 | as-is | bundled plugin, low churn | Byron | when next touched |
Temporary rows (cleared by a scheduled PR)
| Repo / file | Lines | Cleared by |
|---|---|---|
core plugins/__init__.py |
~2,470 (grew under R0) | the plugins/_routes.py + plugins/_registry.py split (rides the server.py router work) |
Watch list (under the norm — no row needed, re-census each phase)
musicxml-import/mxml2notation.py (1,456) · core static/capabilities/audio-effects.js
(1,436) · studio routes.py (1,399) · update-manager screen.js (1,492 — zero headroom).
Planned, NOT exempt (owned by split plans — listed so nothing falls between states)
core static/app.js (11,852) · static/highway.js (4,168, whole file) · server.py
(5,988 — was 14,037; ratcheted by the R3 MetadataDB + AudioEffectsMappingDB
extractions and fifteen routers/ modules; the ~930-line metadata-enrichment subsystem — MB/CAA/AcoustID transport, matcher, background worker — now lives in lib/enrichment.py) ·
lib/metadata_db.py (4,373 — new in R3; the MetadataDB class alone is 4,018 lines
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) — 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.