fix(docs): update stale mcp_server references for gitea-mcp migration

- DEBUGGING-CHECKLIST: gitea test uses gitea_mcp.server (not mcp_server)
- debug-mcp skills: generic module placeholder, gitea exception noted
- Removed orphan .doc-guardian-queue from projman

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

plugins/debug-mcp/commands/debug-mcp-scaffold.md

@@ -108,6 +108,9 @@ python-dotenv>=1.0.0
      "cwd": "mcp-servers/<server_name>"
    }
    ```
+
+   **Note:** Use `mcp_server.server` for new servers being scaffolded.
+   Exception: gitea uses `gitea_mcp.server` (pip-installed package).
 3. Show the change and ask user to confirm before writing
 
 ### Phase 5: Completion