immich: migrate upload volume from NFS named volume to CIFS systemd bind mount

Replace fragile Docker NFS named volume with /mnt/nas_family/immich-library
bind mount backed by systemd mnt-nas_family.mount (permanent CIFS).

immich/docker-compose.yaml

@@ -17,8 +17,7 @@ services:
     #   file: hwaccel.transcoding.yml
     #   service: cpu # set to one of [nvenc, quicksync, rkmpp, vaapi, vaapi-wsl] for accelerated transcoding
     volumes:
-      # Do not edit the next line. If you want to change the media storage location on your system, edit the value of UPLOAD_LOCATION in the .env file
-      - ${UPLOAD_LOCATION}:/usr/src/app/upload
+      - /mnt/nas_family/immich-library:/usr/src/app/upload
       - /etc/localtime:/etc/localtime:ro
     env_file:
       - stack.env
@@ -84,12 +83,6 @@ services:
 
 volumes:
   model-cache:
-  library:
-    driver: local
-    driver_opts:
-      type: nfs
-      o: "addr=192.168.1.192,rw,nolock,soft"
-      device: ":/mnt/user/family/immich-library"
 
 networks:
   default: