diff --git a/src/app_controller.py b/src/app_controller.py
index 5694a67..61b8dde 100644
--- a/src/app_controller.py
+++ b/src/app_controller.py
@@ -137,6 +137,7 @@ class AppController:
   self.active_track: Optional[models.Track] = None
   self.active_tickets: List[Dict[str, Any]] = []
   self.mma_streams: Dict[str, str] = {}
+  self._worker_status: Dict[str, str] = {}  # stream_id -> "running" | "completed" | "failed" | "killed"
   self._pending_patch_text: Optional[str] = None
   self._pending_patch_files: List[str] = []
   self._show_patch_modal: bool = False
@@ -293,6 +294,7 @@ class AppController:
     '_track_discussion_active': '_track_discussion_active',
     'proposed_tracks': 'proposed_tracks',
     'mma_streams': 'mma_streams',
+    '_worker_status': '_worker_status',
     'active_track': 'active_track',
     'active_tickets': 'active_tickets',
     'tracks': 'tracks',
@@ -397,9 +399,12 @@ class AppController:
      if stream_id:
       if is_streaming:
        if stream_id not in self.mma_streams: self.mma_streams[stream_id] = ""
+       if stream_id not in self._worker_status: self._worker_status[stream_id] = "running"
        self.mma_streams[stream_id] += text
       else:
        self.mma_streams[stream_id] = text
+       if stream_id in self._worker_status and self._worker_status[stream_id] == "running":
+        self._worker_status[stream_id] = "completed"
       if stream_id == "Tier 1":
        if "status" in payload:
         self.ai_status = payload["status"]
@@ -1151,6 +1156,7 @@ class AppController:
     "mma_status": self.mma_status,
     "ai_status": self.ai_status,
     "mma_streams": self.mma_streams,
+    "worker_status": self._worker_status,
     "active_tier": self.active_tier,
     "active_tickets": self.active_tickets,
     "proposed_tracks": self.proposed_tracks