Ingest tutorial videos from URLs or local files, collect transcript/keyframe evidence, classify the tutorial direction, and turn repeated tutorial patterns into reusable Codex skills. Use when the user provides a tutorial link/file and asks Codex to learn it, summarize it, compare tutorial directions, extract reusable patterns, create or update direction-specific skills, or produce a node/parameter/technique checklist. Supports subtitle retrieval, keyframe extraction, local transcription fallback, tutorial-type routing, and skill-generation guidance.
