Simplify: drop custom scripts, use native s6 multi-profile supervision

- Remove patch_tts_tool.py (orphaned)
- Remove run-multi-gateways.sh (replaced by s6 native profile supervision)
- Remove start-hermes.sh (overengineered — the image does this natively)
- compose.yml: command: gateway run, drop HERMES_PROFILES env var
- Dockerfile: revert start-hermes.sh COPY addition

Per-profile gateways are now managed by s6-overlay natively:
profiles with desired_state=running in gateway_state.json are
auto-started by the s6 reconciler on boot.

ai/compose.yml

@@ -7,20 +7,13 @@ services:
         - default
     container_name: hermes
     restart: always
-    # Use the image default ENTRYPOINT ["/init", "/opt/hermes/docker/main-wrapper.sh"]
-    # for proper s6-overlay supervision. The CMD runs our multi-profile launcher
-    # which spawns per-profile gateways in background, then the default gateway
-    # in foreground (keeps the container alive).
-    command: ["/usr/local/bin/start-hermes.sh"]
+    # Gateway run enables the internal API server on port 8642
+    command: gateway run
     environment:
       - HERMES_UID=10000
       - HERMES_GID=10000
       - OLLAMA_HOST=http://ollama-cpu:11434
       - HERMES_DASHBOARD=1
-      # Multi-profile: comma-separated list of profiles to run as gateways.
-      # start-hermes.sh reads this and starts one gateway per profile.
-      # Add profiles here when they exist on disk (e.g. default,researcher,writer)
-      - HERMES_PROFILES=ashley,claire,finn,matt,paul
       - API_SERVER_ENABLED=true
       - API_SERVER_PORT=8642
       - API_SERVER_HOST=0.0.0.0