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/implement.md

@@ -1,7 +1,17 @@
 ---
 description: "Execute tasks from a track's implementation plan following TDD workflow"
 argument-hint: "[track-id] [--task X.Y] [--phase N]"
-allowed-tools: ["Read", "Write", "Edit", "Glob", "Grep", "Bash", "AskUserQuestion", "TodoWrite"]
+allowed-tools:
+  [
+    "Read",
+    "Write",
+    "Edit",
+    "Glob",
+    "Grep",
+    "Bash",
+    "AskUserQuestion",
+    "TodoWrite",
+  ]
 ---
 
 # Implement Track