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/commands/new-track.md

@@ -1,7 +1,8 @@
 ---
 description: "Create a new track with specification and phased implementation plan"
 argument-hint: "<feature|bug|chore|refactor> <name>"
-allowed-tools: ["Read", "Write", "Edit", "Glob", "Grep", "Bash", "AskUserQuestion"]
+allowed-tools:
+  ["Read", "Write", "Edit", "Glob", "Grep", "Bash", "AskUserQuestion"]
 ---
 
 # New Track