- Add _ytdlp_transcript() — fetch transcripts via yt-dlp Python API
(supports json3/srv3/vtt/srt subtitle formats, cookies.txt auth)
- Add _parse_subtitles() — parse subtitle formats into plain text
- Keep _yttranscript_api_transcript() as fallback
- download_transcript() tries yt-dlp first, then youtube-transcript-api
- Add yt-dlp to requirements.txt
- Update tests to mock both paths (all 23 pass)
- Document Google Data API v3 caption limitations in architecture.md
(captions.list works, captions.download=403 for non-owned videos)
- Instantiate YouTubeTranscriptApi class and call list() as required by v1.2.4
- Decorate async database fixture with pytest_asyncio.fixture
- Replace hardcoded base URL string assertion in test_summarizer.py with dynamized summarizer.BASE_URL value to support proxy profiles
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
- Configure conftest.py with pytest tmp_path DB isolation fixtures
- Add test_db.py for schema connection validations
- Add test_fetcher.py with mocked yt-dlp subprocess parser checks
- Add test_summarizer.py with mocked transcripts and Claude API requests
- Add test_main.py for FastAPI router endpoints and state updates
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>