feat(ui): Implement manual skeleton context injection

conductor/tracks.md

@@ -56,7 +56,7 @@ This file tracks all major tracks for the project. Each track has its own detail
 11. [x] **Track: Track Progress Visualization**
     *Link: [./tracks/track_progress_viz_20260306/](./tracks/track_progress_viz_20260306/)*
 
-12. [ ] **Track: Manual Skeleton Context Injection**
+12. [~] **Track: Manual Skeleton Context Injection**
     *Link: [./tracks/manual_skeleton_injection_20260306/](./tracks/manual_skeleton_injection_20260306/)*
 
 13. [ ] **Track: On-Demand Definition Lookup**

conductor/tracks/manual_skeleton_injection_20260306/plan.md

@@ -5,10 +5,10 @@
 ## Phase 1: UI Foundation
 Focus: Add file injection button and state
 
-- [ ] Task 1.1: Initialize MMA Environment
+- [x] Task 1.1: Initialize MMA Environment
     - Run `activate_skill mma-orchestrator` before starting
 
-- [ ] Task 1.2: Add injection state variables
+- [~] Task 1.2: Add injection state variables
     - WHERE: `src/gui_2.py` `App.__init__`
     - WHAT: State for injection UI
     - HOW: