🐛 fix(monitoring): remove duplicate node-exporter definition

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

docker-compose.macmini.yml

@@ -1198,22 +1198,6 @@ services:
       timeout: 10s
       retries: 3
 
-  node-exporter:
-    image: prom/node-exporter:v1.7.0
-    container_name: mana-mon-node-exporter
-    restart: always
-    command:
-      - '--path.procfs=/host/proc'
-      - '--path.sysfs=/host/sys'
-      - '--path.rootfs=/rootfs'
-      - '--collector.filesystem.mount-points-exclude=^/(sys|proc|dev|host|etc)($$|/)'
-    volumes:
-      - /proc:/host/proc:ro
-      - /sys:/host/sys:ro
-      - /:/rootfs:ro
-    ports:
-      - "9100:9100"
-
   cadvisor:
     image: gcr.io/cadvisor/cadvisor:v0.49.1
     container_name: mana-mon-cadvisor