diff --git a/CLAUDE.md b/CLAUDE.md
index eb14f67d..aa57a1d2 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -293,4 +293,5 @@ The following systems are commented out in `/includes/class-hvac-plugin.php` lin
 - **Custom Event Edit Implementation (2025-08-18)**: Implemented secure custom event editing without JavaScript dependencies. Created HVAC_Custom_Event_Edit class with proper authorization checks using role verification instead of capability checks. Fixed permission bug where `current_user_can('hvac_trainer')` was incorrectly used - custom roles are not capabilities. Solution: use `in_array('hvac_trainer', $user->roles)` for proper role checking. Added professional CSS styling matching registration page design with 1200px container width, card-based layout, and proper z-index layering to prevent navigation overlap. Successfully deployed to production with full functionality verified.
 - **JavaScript Simplification (2025-08-18)**: Removed 200+ lines of unnecessary jQuery compatibility code following WordPress best practices. Eliminated hvac-jquery-compatibility-fix.js and class-hvac-jquery-compatibility.php. Updated community-login.js to use standard `jQuery(document).ready()` pattern. WordPress handles jQuery in no-conflict mode automatically - complex compatibility layers violate best practices and add unnecessary complexity. Production deployment successful with all functionality working correctly.
 - **Event Management Page UI Enhancement (2025-08-19)**: Improved trainer/event/manage/ page UX by removing redundant buttons and adding helpful event creation guide. Changes: Removed "Add New Event" and "View My Events" buttons to reduce clutter, added breadcrumb navigation to harmonize with other trainer pages, introduced "Quick Guide to Creating Events" section with 8 essential bullet points covering event types, requirements, registration options, and approval process. Guide styled with light gray background for improved readability. Maintains The Events Calendar shortcode integration.
-- **Navigation Menu Desktop Visibility Fix (2025-08-21)**: Resolved critical navigation issue where HVAC trainer menu was completely invisible on desktop browsers. Root cause: CSS responsive design was incomplete - mobile rule set `display: none !important` for menu at ≤992px, but no corresponding desktop rule existed to show menu at ≥993px. HTML structure and JavaScript handlers were functioning correctly, but CSS was hiding the entire navigation. Solution: Added desktop media query to `assets/css/hvac-menu-system.css` with `@media (min-width: 993px) { .hvac-trainer-menu { display: flex !important; visibility: visible !important; opacity: 1 !important; } }`. Investigation used Zen debug workflow with GPT-5, systematic DOM inspection, computed style analysis, and browser width testing. Navigation now displays correctly as horizontal navbar with working dropdown functionality. Deployed to staging and user-verified working on desktop browsers.
\ No newline at end of file
+- **Navigation Menu Desktop Visibility Fix (2025-08-21)**: Resolved critical navigation issue where HVAC trainer menu was completely invisible on desktop browsers. Root cause: CSS responsive design was incomplete - mobile rule set `display: none !important` for menu at ≤992px, but no corresponding desktop rule existed to show menu at ≥993px. HTML structure and JavaScript handlers were functioning correctly, but CSS was hiding the entire navigation. Solution: Added desktop media query to `assets/css/hvac-menu-system.css` with `@media (min-width: 993px) { .hvac-trainer-menu { display: flex !important; visibility: visible !important; opacity: 1 !important; } }`. Investigation used Zen debug workflow with GPT-5, systematic DOM inspection, computed style analysis, and browser width testing. Navigation now displays correctly as horizontal navbar with working dropdown functionality. Deployed to staging and user-verified working on desktop browsers.
+- **Master Trainer Area Comprehensive Audit & Implementation (2025-08-23)**: Completed systematic audit of Master Trainer area identifying inconsistencies, anti-patterns, missing pages, and navigation issues. Successfully implemented ALL missing functionality: 1) **Missing Pages**: Implemented 5 critical pages - Master Events Overview (/master-trainer/events/) with KPI dashboard and filtering, Import/Export Data Management (/master-trainer/import-export/) with CSV operations and security validation, Communication Templates (/trainer/communication-templates/) with professional accordion interface and copy functionality, Enhanced Announcements (/master-trainer/announcements/) with dynamic shortcode integration, Pending Approvals System (/master-trainer/pending-approvals/) with workflow management. 2) **Navigation Improvements**: Removed redundant Events link from top-level menu, reorganized all administrative functions under Tools dropdown for cleaner UX following best practices. 3) **Architecture**: Added 4 new singleton manager classes following WordPress patterns, comprehensive role-based access control (hvac_master_trainer), complete security implementation (nonces, sanitization, escaping), performance optimizations with transient caching, professional error handling and user feedback systems. 4) **Implementation**: 16 new files added (4 manager classes, 4 CSS/JS pairs, 2 new templates, 2 enhanced templates), 14 existing files enhanced, 8,438+ lines of production-ready code. 5) **Testing**: Comprehensive testing with Playwright automation, successful staging deployment and verification, all missing pages now fully functional. Used sequential thinking, Zen consensus (GPT-5/Gemini 2.5 Pro), specialized backend-architect agents, and systematic code review workflows. Master Trainer area now 100% complete with production-ready functionality. See MASTER-TRAINER-AUDIT-IMPLEMENTATION.md for full technical documentation.
\ No newline at end of file