fix: use canvas capture for recording, remove cancel button

Recording now creates an offscreen <img> (browser-native MJPEG
decoding) and captures frames via canvas.toBlob() at 100ms intervals.
This replaces the broken fetch-based multipart parser.

- useRecorder: img+canvas capture instead of fetch+ReadableStream
- RecorderControls: removed Cancel button, only Record/Stop remain
- App.vue: removed cancel wiring
This commit is contained in:
2026-08-01 16:20:48 +08:00
parent 386d8d5852
commit 88caa1e976
7 changed files with 99 additions and 196 deletions
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