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Three things a plugin needs before it can actually use panes.
## mirrorGlobal — the camera-director problem
The 3D highways read their free camera from a plain global,
`window.__h3dCamCtl` (highway_3d/FREECAM_BRIDGE.md), once per frame in
_resolveFreeCam(). A camera panel in the main window just writes that
object and the camera moves. A panel in a POP-OUT window cannot:
window.__h3dCamCtl there is a different object in a different realm, and
writing it moves nothing.
So a pane declares one field — `mirrorGlobal: '__h3dCamCtl'` — and
pane-mirror.js (main realm, where the renderers live) copies that pane's
state onto the global whenever it changes. highway_3d, keys_highway_3d
and drum_highway_3d are NOT modified and do not know panes exist.
The rule that makes it work: MUTATE THE OBJECT, NEVER REPLACE IT. A
renderer may be holding the reference, and swapping in a new object would
leave it reading an orphan. Keys the pane doesn't set are left alone
rather than deleted — the global may carry a renderer's own bookkeeping.
Closing the pane deliberately leaves the global as-is: closing the camera
panel should not snap the camera back to a default, which is exactly what
happens today (nobody clears __h3dCamCtl).
## Manifest-declared panes
"panes": [{ "id": "camera_director", "title": "Camera Director",
"script": "panes/camera.js", "mirrorGlobal": "__h3dCamCtl" }]
Declaring a pane beats calling panes.register() from screen.js because it
becomes openable FROM THE RAIL OR THE TRAY WITHOUT THE PLUGIN'S SCREEN
EVER HAVING BEEN VISITED — core registers a stub from the manifest and
fetches the script only when the user opens it. A pane you can only reach
by first navigating to the screen it was meant to replace is not much of a
pane.
The script sets `window.feedBackPane_<id> = { mount, unmount }`, mirroring
the existing window.feedBackViz_<id> convention, and the SAME file is what
a pop-out window loads in its own realm.
`script` is validated as a relpath under the plugin's src/ and served
through the sandboxed /api/plugins/<id>/src/ route — the containment rule
`styles` already has for assets/. Traversal, absolute paths, drive letters,
backslashes and non-.js are rejected; a bad entry is dropped with a warning
rather than failing the whole plugin, because one malformed pane should not
cost the user a working plugin.
Note the projection is written TWICE — _nav_entry() and the /api/plugins
route re-project independently — so panes had to be added to both, plus the
pending branch (a pane can be opened while its plugin is still installing
deps; the script is fetched on open, not at discovery).
## docs/plugin-panes.md
The contract, and the one rule it all hangs on: mount(root, ctx) runs in a
realm that may not have the app in it. Everything comes through ctx, or the
pane works docked and silently dies popped out.
Verified: manifest validation rejects ../.., C:\, non-.js, dupes and
missing fields while passing a good entry; /api/plugins projects panes[] for
all 20 plugins. mirrorGlobal mutates the global IN PLACE — a reference held
the way _resolveFreeCam holds it sees the change, and a renderer's own field
on that object survives — both for a local write and for a write arriving
over the channel from a pop-out realm.
pytest: 2401 passed, 8 failed — all 8 reproduce on a clean main (including
the one in tests/test_plugins.py) and are unrelated.
Signed-off-by: topkoa <topkoa@gmail.com>
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| .. | ||
| benchmarks | ||
| diagnostics | ||
| skills | ||
| 3dhighway-open-string-double-sustain.jpg | ||
| capability-domains.md | ||
| capability-recipes.md | ||
| capability-review-preflight.md | ||
| capability-roadmap.md | ||
| capability-safety-matrix.md | ||
| diagnostics-bundle-spec.md | ||
| host-theme-contract.md | ||
| library.png | ||
| NOTE_FAILURE_PLAN.md | ||
| NOTE_FAILURE_SPEC.md | ||
| note-detect-tuning.md | ||
| perf-baseline.md | ||
| player-2d.jpg | ||
| player-3d.jpg | ||
| player-3d.webp | ||
| plugin-capability-inventory.md | ||
| plugin-manifest.schema.json | ||
| plugin-modules.md | ||
| plugin-panes.md | ||
| plugin-styles.md | ||
| plugin-v3-ui.md | ||
| size-exemptions.md | ||
| sloppak-hand-editing.md | ||
| sloppak-spec.md | ||
| working-tuning-on-device-tests.md | ||
