feat: complete Nexus mission-control workflows

backend/appsettings.json

@@ -5,6 +5,7 @@
   "Integrations": {
     "OpenClaw": {
       "BaseUrl": "http://127.0.0.1:18789",
+      "RequiredVersion": "",
       "Token": "",
       "Password": ""
     },
@@ -21,5 +22,9 @@
     "AccessTokenExpirationMinutes": 15,
     "RefreshTokenExpirationDays": 7
   },
+  "TaskRecovery": {
+    "StaleHours": 2,
+    "IntervalMinutes": 30
+  },
   "AllowedHosts": "*"
 }