Download videos and extract subtitles

Run multi-phase workflow with agent dispatch

Batch subscription management with parallel confirmation and state sync.

• · batch base path and count

• · candidate implementations or solutions

• · Claude agent API
• · parallel execution harness
• · Workflow phase management
• · JSON schema validation
• · git read-only commands
• · grep/ripgrep

Playlist/subscription batch with identifiers

• · agent returns malformed/invalid schema
• · one agent in parallel batch times out or errors
• · input file not found or unreadable
• · agent role/specialist unavailable

• · stored in repo: changtimwu/hardcoded-subtitle-extractor
• · strict JSON schema validation