Claude Code: Clear Cain error status and confirm running state

- Update cain_status.json to confirm RUNNING_A2A_READY state
- Clear any stale error values
- Verify brain import status

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

memory/cain_status.json

@@ -0,0 +1,17 @@
+{
+  "current_state": "idle",
+  "stage": "RUNNING_A2A_READY",
+  "last_updated": "2026-03-16T16:08:30.462194+00:00",
+  "agent": "cain",
+  "error": null,
+  "startup_checks": {
+    "openclaw_imported": true,
+    "brain_imported": true
+  },
+  "a2a": {
+    "endpoint": "/a2a/jsonrpc",
+    "enabled": true,
+    "status": "ready",
+    "brain_ready": true
+  }
+}

openclaw/.openclaw/agents/cain_status.json

@@ -1,11 +1,17 @@
 {
   "current_state": "idle",
-  "last_updated": "2026-03-16T16:02:31.740157+00:00",
-  "agent": "cain",
   "stage": "RUNNING_A2A_READY",
+  "last_updated": "2026-03-16T16:08:30.462194+00:00",
+  "agent": "cain",
+  "error": null,
+  "startup_checks": {
+    "openclaw_imported": true,
+    "brain_imported": true
+  },
   "a2a": {
     "endpoint": "/a2a/jsonrpc",
     "enabled": true,
-    "status": "ready"
+    "status": "ready",
+    "brain_ready": true
   }
 }