docs: add critical task for recording stats update mechanism

docs/TODO.md

@@ -10,6 +10,19 @@
 **Tests:** 285/286 passing - 99.7% (73% coverage)
 **Status:** Awaiting infrastructure setup
 
+### High Priority Tasks
+
+**🔴 CRITICAL: Recording Stats Update Mechanism**
+- **Issue:** Fields `recordingsDone` and `recordingsReceived` exist in database but no mechanism to update them
+- **Requirements:**
+  - Analyze how to update these fields consistently with tier system and ratings
+  - Determine update trigger: after match completion? after rating? automatic on suggestion acceptance?
+  - Ensure consistency with existing rating system
+  - Consider edge cases: declined suggestions, cancelled matches, incomplete ratings
+  - Design API endpoints or automated triggers for stat updates
+- **Impact:** Tier system fairness algorithm depends on accurate karma tracking
+- **Dependencies:** Matches API, Ratings API, Recording Suggestions
+
 ### Recently Completed (2025-11-29)
 - 3-Tier Account System (BASIC/SUPPORTER/COMFORT) with fairness algorithm
 - Dual Buffer System (prep before + rest after dancing)