feat(python/robomp): added the wontfix primary classification and comment-only triage path

- Added `wontfix` to primary classification handling by updating host-tool classification metadata and issue taxonomy prompts.
- Updated kickoff/follow-up/system prompt guidance to treat intentional-design reports as `wontfix`, with maintainer-intent signals stopping work and ending in a single explanatory comment.
- Added tests to verify `classify_issue` persists a `wontfix` classification and returns a no-PR, comment-only next step.

python/robomp/src/proxy_client.py

@@ -11,10 +11,10 @@ to short-circuit the network.
 
 from __future__ import annotations
 
-import json
 import asyncio
-import time
+import json
 import logging
+import time
 from collections.abc import Mapping
 from pathlib import Path
 from typing import Any