Add Windows uninstall instructions and expand migration steps

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.codex/INSTALL.md

@@ -29,7 +29,18 @@ Enable superpowers skills in Codex via native skill discovery. Just clone and sy
 
 ## Migrating from old bootstrap
 
-If your `~/.codex/AGENTS.md` contains a superpowers block that references `superpowers-codex bootstrap`, remove that block — it's no longer needed. Native skill discovery replaces the old bootstrap system.
+If you installed superpowers before native skill discovery, you need to:
+
+1. **Update the repo:**
+   ```bash
+   cd ~/.codex/superpowers && git pull
+   ```
+
+2. **Create the skills symlink** (step 2 above) — this is the new discovery mechanism.
+
+3. **Remove the old bootstrap block** from `~/.codex/AGENTS.md` — any block referencing `superpowers-codex bootstrap` is no longer needed.
+
+4. **Restart Codex.**
 
 ## Verify
 

docs/README.codex.md

@@ -95,7 +95,12 @@ Skills update instantly through the symlink.
 rm ~/.agents/skills/superpowers
 ```
 
-Optionally delete the clone: `rm -rf ~/.codex/superpowers`.
+**Windows (PowerShell):**
+```powershell
+Remove-Item "$env:USERPROFILE\.agents\skills\superpowers"
+```
+
+Optionally delete the clone: `rm -rf ~/.codex/superpowers` (Windows: `Remove-Item -Recurse -Force "$env:USERPROFILE\.codex\superpowers"`).
 
 ## Troubleshooting