補齊 MCP 早退狀態

services/mcp_router.py

@@ -236,6 +236,7 @@ class MCPRouter:
             return MCPResult(
                 success=False, server=server, tool=tool,
                 error='MCP_ROUTER_ENABLED=false (戰役 v5.0 預設 OFF；待 docker-compose.mcp.yml deploy 後翻 ON)',
+                status='error',
             )
 
         # 白名單檢查
@@ -243,6 +244,7 @@ class MCPRouter:
             return MCPResult(
                 success=False, server=server, tool=tool,
                 error=f'tool not in registry: caller={caller} server={server} tool={tool}',
+                status='error',
             )
 
         # Server 配置檢查
@@ -251,6 +253,7 @@ class MCPRouter:
             return MCPResult(
                 success=False, server=server, tool=tool,
                 error=f'unknown server: {server}',
+                status='error',
             )
 
         # Cache 命中