- ReportHeader/PlanHeader: format ISO dates as Korean (2026년 4월 2일)
- ChannelOverview: map API keys to Korean labels (naverBlog → 네이버 블로그)
- useMarketingPlan: replace mockPlan with real DB-based plan generation
- transformPlan: build MarketingPlan from report data (channels, pillars, calendar)
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>