Plan files (.plan.md) are now the authoritative source for RFC task
tracking, with SQLite as a derived cache rebuilt on read.
Changes:
- Add plan.rs with PlanFile parsing/generation
- Add schema v7 migration for plan_cache table
- Modify handle_rfc_plan to write .plan.md files
- Modify handle_rfc_task_complete to update .plan.md
- Implement rebuild-on-read for stale cache detection
- Add RFC header validation (table vs inline format)
- Extend blue_lint with headers check and --fix support
Also includes spike investigating Claude Code task integration.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
9759f0e3db