REST API reference for 147 services. Authentication patterns, endpoints, rate limits, and common gotchas.
- Added new API reference files organized by category (e.g., ai-ml, communication, crm, database, etc.) - Introduced documentation for pagination, resilience (error handling), and webhook patterns - Added a quick reference for multi-account credential naming via the new `credentials.md` - Expanded the Quick Reference table and updated file organization details - No changes to core logic; content and navigation improvements only