YouTube to Markdown

Multiple videos: Process one video at a time, sequentially. Do not run parallel extractions. Execute all steps sequentially without asking for user approval. Use TodoWrite to track progress.

Step 0: Check extracted before

python3 ./check_existing.py "<YOUTUBE_URL>" "<output_directory>"

Integrity check:

• If summary_valid: false: Show issues to user, ask "Tiedosto epätäydellinen: [issues]. Prosessoidaanko uudelleen?" If yes, continue to Step 1.
• If transcript_valid: false: Ask user, if yes re-run Steps 2-3, 7-9.
• If comments_valid: false: Ask user, if yes re-run comment analysis.

If returns exists: true AND all valid fields are true: Read and follow UPDATE_MODE.md for update workflow.