Compact request activity into a live summary and modal history

backend/app/services/operation_progress.py

@@ -70,7 +70,7 @@ def begin_operation(operation_id: str, *, label: Optional[str], path: str) -> To
                     "id": uuid.uuid4().hex,
                     "service": "Magent",
                     "state": "complete",
-                    "message": "Magent received the action.",
+                    "message": "Your action has been received. Magent is starting the checks.",
                     "started_at": now_iso,
                     "finished_at": now_iso,
                     "duration_ms": 0,
@@ -178,9 +178,9 @@ def finish_operation(operation_id: str, *, success: bool, status_code: Optional[
                 "service": "Magent",
                 "state": "complete" if success else "error",
                 "message": (
-                    "Magent finished processing the action."
+                    "This action has finished. Check the request status for what happens next."
                     if success
-                    else "Magent could not complete the action."
+                    else "This action could not be completed. Open the activity details to see which step needs attention."
                 ),
                 "started_at": now_iso,
                 "finished_at": now_iso,