feat(conductor): add track manager command for lifecycle management

Add /conductor:manage command with comprehensive track lifecycle operations:
- Archive completed tracks with reason tracking
- Restore archived tracks to active state
- Delete tracks permanently with safety confirmations
- Rename track IDs with full reference updates
- Cleanup orphaned artifacts and stale tracks
- Interactive menu when invoked without arguments

Also includes:
- Add Archived Tracks section to tracks.md template
- Update README with manage command documentation
- Bump version to 1.1.0
- Format files with prettier

plugins/conductor/templates/tracks.md

@@ -34,6 +34,15 @@ This file maintains the registry of all development tracks for the project. Each
 
 ---
 
+## Archived Tracks
+
+<!-- Archived tracks are moved here with reason and date -->
+
+| Track ID | Type | Reason | Archived | Folder |
+| -------- | ---- | ------ | -------- | ------ |
+
+---
+
 ## Track Creation Checklist
 
 When creating a new track: