- Add resolveAnalysisMode() to modes/index.ts for dynamic skill lookup
- Extend structured-analysis.ts to use resolveAnalysisMode (supports custom skill prompts and skillId persistence)
- Update structured analyses route to use resolveAnalysisMode instead of hardcoded VALID_MODES set
- Add skills:read/create/edit/delete RBAC permissions to rbac.ts
- Add docs/API_GUIDE.md with full endpoint reference
Co-Authored-By: Paperclip <noreply@paperclip.ing>