Task 304: Update Skills with Current Project State

Status: DONE

Description

Update Claude Code skills to reflect the current project state. Several skills have stale references:

episode-analysis

• .json → .md (MDX migration, Task 186-187)
• Epoch 2240 → 2215 (Task 264)
• "Prefer Haiku subagents" → "Prefer Sonnet subagents" (CLAUDE.md policy)
• Whisper model: medium → large-v3-turbo (Task 285)

report-review

• .json references → .md (MDX migration)

subtitle-extraction

• Whisper model recommendation: medium → large-v3-turbo (Task 285)
• Add video-ocr as an additional extraction method (Task 289)

Housekeeping

• Mark cost_efficiency_analysis.md as RESOLVED (recommendations incorporated into CLAUDE.md)