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/skills/venv-diagnostics.md

@@ -55,9 +55,13 @@ This reports broken dependencies (missing or incompatible versions).
 Verify the server's main module can be imported:
 
 ```bash
-cd <server_cwd> && .venv/bin/python -c "import mcp_server.server" 2>&1
+cd <server_cwd> && .venv/bin/python -c "import <module>.server" 2>&1
 ```
 
+Where `<module>` is the server's Python module:
+- gitea: `gitea_mcp` (pip-installed package)
+- All others: `mcp_server` (local source)
+
 Common failures:
 | Error | Cause | Fix |
 |-------|-------|-----|