fix: add betterframe-data volume to server in Coolify compose

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.coolify.yml

@@ -20,6 +20,8 @@ services:
     restart: unless-stopped
     environment:
       - TZ=UTC
+    volumes:
+      - betterframe-data:/var/lib/betterframe
     expose:
       - "18080"
       - "18081"
@@ -94,6 +96,11 @@ services:
     networks:
       - betterframe
 
+volumes:
+  betterframe-data:
+  nrdata:
+  pgdata:
+
 networks:
   betterframe:
     driver: bridge