conductor(plan): Mark Python Style Refactor track as COMPLETE

All 3 phases done:
- Phase 1: Pilot tooling [c75b926]
- Phase 2: Core refactor [db65162]
- Phase 3: Type hints + styleguide [3216e87]

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

TASKS.md

@@ -9,14 +9,11 @@
 
 ### 1. AI-Optimized Python Style Refactor
 **Track**: `conductor/tracks/python_style_refactor_20260227/`
-**Status**: IN_PROGRESS — Phase 3
+**Status**: COMPLETE
 **Completed**:
 - Phase 1: Research and Pilot Tooling [checkpoint: c75b926]
 - Phase 2: Core Refactor - Indentation and Newlines [checkpoint: db65162]
-**Remaining in Phase 3** (AI-Optimized Metadata and Final Cleanup):
-- [~] Type hints for UI modules: `gui_2.py`, `gui_legacy.py`
-- [ ] Update style guide documentation
-- [ ] User manual verification
+- Phase 3: AI-Optimized Metadata and Final Cleanup [checkpoint: 3216e87]
 
 ### 2. Robust Live Simulation Verification
 **Track**: `conductor/tracks/robust_live_simulation_verification/`