diff --git a/conductor/tracks/ui_performance_20260223/plan.md b/conductor/tracks/ui_performance_20260223/plan.md
index 18feb8d..bdb7d9c 100644
--- a/conductor/tracks/ui_performance_20260223/plan.md
+++ b/conductor/tracks/ui_performance_20260223/plan.md
@@ -22,9 +22,9 @@
 - [ ] Task: Conductor - User Manual Verification 'Phase 2: AI Tooling and Alert System' (Protocol in workflow.md)
 
 ## Phase 3: Diagnostics UI and Optimization
-- [ ] Task: Build the Diagnostics Panel in Dear PyGui
-    - [ ] Sub-task: Write Tests (verify panel components render)
-    - [ ] Sub-task: Implement Feature (plots, stat readouts in `gui.py`)
+- [x] Task: Build the Diagnostics Panel in Dear PyGui 30d838c
+    - [x] Sub-task: Write Tests (verify panel components render)
+    - [x] Sub-task: Implement Feature (plots, stat readouts in `gui.py`)
 - [ ] Task: Identify and fix main thread performance bottlenecks
     - [ ] Sub-task: Write Tests (reproducible "heavy" load test)
     - [ ] Sub-task: Implement Feature (refactor heavy logic to workers)