Remove manual coolify network config — Coolify manages this automatically

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

docker-compose.yaml

@@ -18,9 +18,6 @@ services:
       timeout: 10s
       retries: 3
       start_period: 10s
-    networks:
-      - coolify
-      - default
 
   cron:
     build: .
@@ -34,13 +31,7 @@ services:
     depends_on:
       web:
         condition: service_healthy
-    networks:
-      - default
 
 volumes:
   cot_data:
     driver: local
-
-networks:
-  coolify:
-    external: true