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/server.py

@@ -656,7 +656,9 @@ def create_app(settings: Settings | None = None) -> FastAPI:
         if event is None:
             raise HTTPException(404, f"unknown delivery {delivery_id}")
         if event.state != "running":
-            raise HTTPException(409, f"delivery {delivery_id} is {event.state}; only running deliveries can be cancelled")
+            raise HTTPException(
+                409, f"delivery {delivery_id} is {event.state}; only running deliveries can be cancelled"
+            )
 
         pool: WorkerPool = bag["pool"]
         fired = await pool.cancel_event(delivery_id)