fix(skills): resolve session resolution, add cancelled event status, and scope mqtt topic

.agents/skills/multi-agent-mux-monitor/scripts/reconcile.sh

@@ -131,9 +131,9 @@ for s in d.get('herdr_sessions', []):
     if s.get('delegate_job_id') == _jid and s.get('status') == 'running':
         _name = s.get('name')
         _srv = s.get('herdr_workspace') or s.get('herdr_server') or 'default'
-        if _event == 'completed':
+        if _event in ('completed', 'cancelled'):
             s['delegate_job_id'] = None
-            print('MQTT Monitor: job completed on ' + str(_name) + ' — session kept alive', flush=True)
+            print('MQTT Monitor: job ' + _event + ' on ' + str(_name) + ' — session kept alive', flush=True)
             _changed = True
         else:
             s['status'] = 'terminated'
@@ -216,7 +216,7 @@ def on_message(_client, _userdata, msg):
         
         print(f"MQTT Monitor: recorded event {event} for job {jid} (seq={seq})", flush=True)
         
-        if event in ("completed", "error"):
+        if event in ("completed", "error", "cancelled"):
             print(f"MQTT Monitor: received terminal event {event} for job {jid}", flush=True)
             handle_terminal(jid, event)
     except Exception as e:
@@ -227,8 +227,13 @@ def on_connect(_c, _u, _flags, reason_code, _props):
     rc = mqtt_common.reason_code_value(reason_code)
     if rc == 0:
         state['connected'] = True
-        _c.subscribe("python/mqtt/jobs/+/events", qos=1)
-        print("MQTT Monitor: subscribed to python/mqtt/jobs/+/events", flush=True)
+        ws_path = os.path.abspath(workspace_root) if workspace_root else os.getcwd()
+        import hashlib
+        fp = hashlib.sha256(ws_path.encode('utf-8')).hexdigest()[:12]
+        topic = f"mam/{fp}/jobs/+/events"
+        _c.subscribe(topic, qos=1)
+        _c.subscribe("python/mqtt/jobs/+/events", qos=1)  # legacy fallback during transition
+        print(f"MQTT Monitor: subscribed to {topic}", flush=True)
     else:
         state['failed'] = True
         print(f"MQTT Monitor connection failed: rc={rc}", flush=True)