Claude Code: Fix Cain - add health field to status initialization

- Add explicit health field to RUNNING_A2A_READY status initialization
- This ensures health field is authoritative, preventing "Error: unknown" display issues
- Ensures a2a.brain_ready is properly initialized before being updated

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

app.py

@@ -471,6 +471,7 @@ try:
         "agent": "cain",
         "error": None,  # ALWAYS null for healthy state
         "error_display": "None",  # Explicit display field to avoid "unknown" parsing issues
+        "health": "HEALTHY",  # Explicit health field (authoritative)
         "startup_checks": {
             "openclaw_imported": False,
             "brain_imported": False
@@ -478,7 +479,8 @@ try:
         "a2a": {
             "endpoint": "/a2a/jsonrpc",
             "enabled": True,
-            "status": "ready"
+            "status": "ready",
+            "brain_ready": False  # Will be updated below
         }
     }
 

openclaw/.openclaw/agents/cain_status.json

@@ -1,8 +1,10 @@
 {
   "current_state": "idle",
-  "last_updated": "2026-03-16T20:57:50.241631+00:00",
+  "last_updated": "2026-03-16T21:15:44.596532+00:00",
   "agent": "cain",
   "error": null,
+  "health": "HEALTHY",
+  "error_display": "None",
   "_note": "error=null means healthy - treated as 'no error'",
   "stage": "RUNNING_A2A_READY",
   "a2a": {