type-two
b627a0f2ff
[laneC] M2/M3: render pipeline (ffmpeg encode + render.js), thumbnails endpoint, reaper
- /render/begin|frame|end|status|out with background ffmpeg thread + on-disk
status fallback; boot-time reap of dirs >48h
- /assets/thumb sidecar lookup (pass-through, no resize dep)
- web/render.js: draftRecord (MediaRecorder) + finalRender (deterministic
timeline.step -> PNG -> POST, <=4 in flight) + download helper
- test_server.py: +render pipeline (ffmpeg synthetic frames -> mp4, ffprobe
~1s) +thumbnail; 6 groups green
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>