chore: release v4.0.0 - sync 550+ skills and restructure docs

skills/conductor-manage/SKILL.md

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+---
+name: conductor-manage
+description: "Manage track lifecycle: archive, restore, delete, rename, and cleanup"
+metadata:
+  argument-hint: "[--archive | --restore | --delete | --rename | --list | --cleanup]"
+---
+
+# Track Manager
+
+Manage the complete track lifecycle including archiving, restoring, deleting, renaming, and cleaning up orphaned artifacts.
+
+## Use this skill when
+
+- Archiving, restoring, renaming, or deleting Conductor tracks
+- Listing track status or cleaning orphaned artifacts
+- Managing the track lifecycle across active, completed, and archived states
+
+## Do not use this skill when
+
+- Conductor is not initialized in the repository
+- You lack permission to modify track metadata or files
+- The task is unrelated to Conductor track management
+
+## Instructions
+
+- Verify `conductor/` structure and required files before proceeding.
+- Determine the operation mode from arguments or interactive prompts.
+- Confirm destructive actions (delete/cleanup) before applying.
+- Update `tracks.md` and metadata consistently.
+- If detailed steps are required, open `resources/implementation-playbook.md`.
+
+## Safety
+
+- Backup track data before delete operations.
+- Avoid removing archived tracks without explicit approval.
+
+## Resources
+
+- `resources/implementation-playbook.md` for detailed modes, prompts, and workflows.