feat: add Episode Composer UI for continuous multi-scene video - #6233
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Adds client/src/components/videoGen/EpisodeComposer.jsx: a multi-scene episode authoring surface surfaced in MediaGen (VideoGen page, "Episode" button) and reachable from FableLoom's story settings drawer. Users write scenes/dialogue and a bible (style/cast/location descriptors), get a live beat-by-beat preview (camera cuts, speaker tags, slot-lock descriptor reuse, per-beat lint status) via a new debounced POST /api/continuous-video/lint (compose+lint without submitting, #6226's hard-cut linter), assign camera framings for continuing beats, then queue the episode against the #6227 orchestrator and watch progress over its SSE stream. FableLoom entry point best-effort imports an episode's scene nodes as draft scenes (client/src/lib/episodeSceneImport.js) — lossy on purpose, always left user-editable, since there's no existing scene-export API to extend.
- Ignore a stale preview response if a newer edit already started a later lint request (request-generation counter). - Gate Queue episode on !previewLoading too, so editing a passing draft into a failing one can't queue against the stale old preview. - Apply a FableLoom scene import that arrives after mount — VideoGen's getLoom() fetch resolves after EpisodeComposer's initial render, so the lazy useState initializer never saw it. - Clear the FableLoom import state when the composer closes, so a later open with no loomId/episodeId doesn't inherit a stale import. - Default a new cast/location bible entry's id to '' instead of a throwaway uuid, so an untouched id field can't silently become the bible key. - Disable the Cast/Locations editors while queuing/streaming, matching the scene editor's busy-gating. - Tighten the teleplay cue-line length regex to match its 60-char guard.
4 tasks
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Summary
client/src/components/videoGen/EpisodeComposer.jsx: a multi-scene episode authoring surface, surfaced in MediaGen (VideoGen page's new "Episode" button) and reachable from FableLoom's story settings drawer.POST /api/continuous-video/lintroute (compose+lint without submitting, reusing Deterministic video-prompt linter for continuous episode clips #6226's hard-cut linter and Continuous video orchestrator: coordinate chained episode clip generation #6227's compiler).client/src/lib/episodeSceneImport.js) — lossy on purpose, always left user-editable, since there's no existing scene-export API to extend.Test plan
cd client && npx vitest run— full client suite green (10312 passed).cd server && npx vitest run— full server suite green.EpisodeComposer.test.jsx(beat preview rendering, lint-failure display, queue gating/save-gating + SSE progress, async FableLoom-import-after-mount),episodeSceneImport.test.js, and server route tests for the new/lintendpoint.opencodereview pass; findings addressed (stale preview race guard, queue gating during in-flight lint, async import sync, busy-gating on bible editors).Closes #6228