fix: add missing command: gateway run to hermes service

Without this,  is empty and entrypoint.sh runs bare 'hermes'
which defaults to interactive chat mode. With a non-TTY stdin
this exits immediately with prompt_toolkit's 'Input is not a
terminal' warning, causing a container restart loop.

The profile gateways (run-multi-gateways.sh) were unaffected
because the script passes 'gateway run' explicitly.

ai/compose.yml

@@ -35,6 +35,8 @@ services:
       "bash /opt/data/hermes-tools/install.sh && bash /opt/data/hermes-tools/run-multi-gateways.sh && exec /usr/bin/tini -g -- /opt/hermes/docker/entrypoint.sh \"$@\"",
       "hermes-entrypoint"]
     restart: always
+    # Gateway run enables the internal API server on port 8642
+    command: gateway run
     environment:
       - OLLAMA_HOST=http://ollama:11434
       - HERMES_DASHBOARD=1