2 Commits

Author	SHA1	Message	Date
Woody	cb0ac07786	fix: text accumulation — stashes are sliding windows, merge via overlap detection ... DashScope stashes are ~7-char rolling windows, not cumulative. Each partial event replaces the previous. Completed events rarely sent. This caused text to jump/replace during streaming and disappear on pause. Backend: - Add _merge_stash() — finds overlapping suffix between successive stashes and appends only new characters, reconstructing full utterance from partials - format_transcription_event returns raw stash for read_events to merge - read_events maintains partial_buffer via _merge_stash, clears on completed - Guard against empty/whitespace-only stashes Frontend: - transcriptRef + onFinalTranscriptRef avoid stale closures in pause handler - stopStreaming fires onFinalTranscript(currentText) before clearing partial - Removed blind setPartialTranscript('') that erased text on pause Tests: 16/16 ws_protocol tests pass, frontend tests unchanged Plan: Updated phase2_implementation_plan.md to Complete with 11-bug log	2026-05-06 20:06:39 +08:00
Woody	a4e067822b	feat: Phase 2.3 ASR proxy + full transcript and 2.4 frontend hooks ... - Backend: DashScope WebSocket proxy (/ws/asr/{video_id}), DashScopeCallback sync-to-async bridge, ffmpeg audio extraction, POST /video/{id}/transcribe - Frontend: useVideoASR hook (auto on play), useFullTranscript hook, QueryInput partialText prop, VideoUploadResponse types, uploadVideo API - Tests: 41 backend + 26 frontend = 67 new tests, all passing	2026-05-06 13:41:24 +08:00