- Move docs/ contents to doc/ with proper numbering:
- CONTACT-FORM-QUICKSTART.md → 17-CONTACT-FORM.md
- SECURITY-AUDIT-REPORT.md → 18-SECURITY-AUDIT.md
- SECURITY.md → 19-SECURITY-IMPLEMENTATION.md
- Delete duplicate/redundant files from docs/:
- CMD-K-COMMAND-BAR.md (duplicate of 16-CMD-K-API.md)
- CONTACT_FORM_IMPLEMENTATION.md (overlaps with quickstart)
- SECURITY-IMPLEMENTATION-SUMMARY.md (summary of audit)
- Update doc/README.md with new document references
- Update test counts to 39 test files across all READMEs
- Update all "Last Updated" dates to 2025-12-01
- Add new API endpoints documentation (text, cmd-k, contact, toggles)
- Update PROJECT-MEMORY.md with new features and correct paths