Per-scene preview thumbnails for templates. Admin clicks "ساخت پیشنمایش
صحنهها" → one single-frame AE render per scene → content.scenes.snapshot_url
→ shown as a thumbnail in the admin scene list (and available to the studio).
- migration 30_render_snapshot_jobs.sql: render.snapshot_jobs (queued|running|
done|error, per scene, image_url).
- render-svc: db/snapshotjobs.go (EnqueueSceneSnapshots, List, Claim, SetResult
-> writes content.scenes.snapshot_url cross-schema, SetError); handlers/
snapshotjobs.go (admin POST/GET /v1/scene-snapshots/:project_id + node-facing
internal claim/result/fail); main.go routes; gateway route.
- devworker: RunSnapshots — fulfils snapshot jobs with a generated placeholder
PNG (data: URL, scene-key-tinted) so the flow is verifiable without an AE node.
Gated by RENDER_DEV_SNAPSHOTS (default off; never hijacks real render jobs).
- admin UI: ProjectScenes "generate snapshots" button (enqueue + poll + reload)
and a thumbnail (snapshot_url || image) per scene row.
Verified e2e via the dev mock: enqueue -> jobs run -> content.scenes.snapshot_url
populated -> scenes API returns it -> admin renders the thumbnail.
Remaining (C2): node-agent real-AE runner — claim snapshot, aerender -s0 -e0 ->
ffmpeg still -> upload to a PERMANENT URL (mirror file-svc, not the time-limited
export presign) -> post result. Needs a live AE node to build + verify.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
soroush.asadi