- Created docs/API-COMPLETE-REFERENCE.md as single source of truth
- Removed redundant API documentation files:
- docs/API-DOCUMENTATION.md
- docs/DOCUMENTATION-SUMMARY.md
- docs/README.md
- unified-api/API-ENDPOINTS-ANALYSIS.md
- unified-api/API-STANDARD-v1.0.md
- Updated main README.md with API documentation section
- Updated CHANGELOG.md with documentation consolidation details
