Update progress log with Phase 2 deliverables, mark Phase 2 complete
in TODO/CHANGELOG/README, fix stale Solid.js reference in findings,
update task_plan status to BUILDING, add v2 key paths to CLAUDE.md.
- Create .claude/rules/ with all 17 standard rule files (01-security through 17-document-imports)
- Add Operational Rules section with Rule Index to .claude/CLAUDE.md