Adds a skill discovery and loading system that lets the LLM agent
autonomously find and follow pre-built editing recipes. Skills are
exposed as two new tools: list_skills (search/discover) and load_skill
(get full instructions).
Built-in skills:
- viral-short: high-retention TikTok/Reels/Shorts workflow with hook,
retention cuts, zoom effects, captions, and CTA
- pitch-video: professional pitch/explainer with 5-act structure
(opening, problem, solution, metrics, CTA)
effdc28237