fix: terminal backend cloud -> local (unknown type error)

'cloud' is not a valid terminal backend in hermes-agent.
Valid types: local, docker, ssh, modal, daytona, singularity.
HF Space container = local execution.

config.yaml

@@ -29,6 +29,6 @@ mcp_servers:
     env:
       MEMPALACE_PALACE_PATH: /data/hermes/palace
 terminal:
-  backend: cloud
+  backend: local
   timeout: 180
 timezone: Asia/Shanghai