Add shared Docker network and Miniflux plugin for Hermes

- Create external 'monotrope' Docker network so services can
  communicate by container name
- Add Miniflux to the shared network (db stays on internal network)
- Add Hermes Miniflux plugin with list_feeds and get_unread_entries tools
- Mount plugin directory and pass Miniflux API key to Hermes container

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

infra/hermes/docker-compose.yml

@@ -9,15 +9,24 @@ services:
       options:
         max-size: "10m"
         max-file: "3"
+    networks:
+      - monotrope
     volumes:
       - hermes_data:/opt/data
       - ./config.yaml:/opt/data/config.yaml:ro
+      - ./plugins:/opt/data/plugins:ro
     environment:
       OPENROUTER_API_KEY: "${OPENROUTER_API_KEY}"
       TELEGRAM_BOT_TOKEN: "${TELEGRAM_BOT_TOKEN}"
       TELEGRAM_ALLOWED_USERS: "${TELEGRAM_ALLOWED_USERS}"
+      MINIFLUX_API_KEY: "${MINIFLUX_API_KEY}"
+      MINIFLUX_BASE_URL: "http://miniflux:8080"
     env_file:
       - .env
 
+networks:
+  monotrope:
+    external: true
+
 volumes:
   hermes_data: