Task 7 complete: move config operational orchestration from routers into service/task layer

backend/app/tasks/health_check.py

@@ -129,6 +129,11 @@ async def _run_probe(app: FastAPI) -> None:
     )
 
 
+async def run_probe(app: FastAPI) -> None:
+    """Run a single health probe outside the scheduled job context."""
+    await _run_probe(app)
+
+
 def register(app: FastAPI) -> None:
     """Add the health-check job to the application scheduler.