Claude Code: Add missing /api/state and /api/logs endpoints

- /api/state returns Cain's current state for A2A/Office polling
- /api/logs returns recent system logs for frontend display
- Port binding already correct (0.0.0.0:7860)

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

app.py

@@ -140,6 +140,55 @@ async def status():
     }
 
 
+@app.get("/api/state")
+async def api_state():
+    """Return Cain's current state for Office/A2A polling."""
+    from error_handlers import handle_status_file_read
+    status_data = handle_status_file_read()
+    return {
+        "state": status_data.get("current_state", "idle"),
+        "detail": status_data.get("error") or "Cain is operational",
+        "updated_at": datetime.utcnow().isoformat() + "+00:00",
+        "stage": status_data.get("stage", "RUNNING"),
+        "health": status_data.get("health", "HEALTHY")
+    }
+
+
+@app.get("/api/logs")
+async def api_logs():
+    """Return recent system logs for frontend display."""
+    try:
+        from openclaw.core.system_logger import get_last_lines
+        log_lines = get_last_lines(50)
+        logs = []
+        for line in log_lines:
+            # Parse log format: [timestamp] LEVEL message
+            if line.startswith("["):
+                try:
+                    close_bracket = line.index("]")
+                    timestamp = line[1:close_bracket]
+                    rest = line[close_bracket + 1:].strip()
+                    # Extract level if present
+                    parts = rest.split(" ", 1)
+                    if len(parts) >= 2 and parts[0] in ("INFO", "WARNING", "ERROR", "DEBUG"):
+                        level, message = parts
+                    else:
+                        level, message = "INFO", rest
+                    logs.append({
+                        "timestamp": timestamp,
+                        "level": level,
+                        "message": message
+                    })
+                except Exception:
+                    logs.append({"timestamp": "", "level": "INFO", "message": line})
+            else:
+                logs.append({"timestamp": "", "level": "INFO", "message": line})
+        return {"logs": logs}
+    except Exception as e:
+        logger.warning(f"Could not fetch logs: {e}")
+        return {"logs": []}
+
+
 # Office Agent Push endpoints - track agents pushing their status to Cain
 # Module-level initialization ensures variables exist before first request
 # This is the correct pattern for FastAPI - globals initialized once at module import