fix: correct volume types and photo path in docker-compose

- Use explicit type: volume for the luma_data named volume so compose
  managers (CasaOS etc.) don't misinterpret it as a bind mount
- Use type: bind / read_only: true for the photo directory
- Both server and worker now reference /media/Plex/Gallery consistently
- Worker was previously left with the placeholder path, causing it to
  watch a non-existent directory and index nothing

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

docker-compose.yml

@@ -11,8 +11,13 @@ services:
       POSTER_DIR: /data/posters
       NODE_ENV: production
     volumes:
-      - luma_data:/data
+      - type: volume
-      - /your/photo/directory:/photos:ro    # ← change this path
+        source: luma_data
+        target: /data
+      - type: bind
+        source: /media/Plex/Gallery
+        target: /photos
+        read_only: true
     healthcheck:
       test: ["CMD", "wget", "-qO-", "http://localhost:3000/api/health"]
       interval: 30s
@@ -29,8 +34,13 @@ services:
       POSTER_DIR: /data/posters
       PHOTO_DIR: /photos
     volumes:
-      - luma_data:/data
+      - type: volume
-      - /your/photo/directory:/photos:ro    # ← same path as server
+        source: luma_data
+        target: /data
+      - type: bind
+        source: /media/Plex/Gallery
+        target: /photos
+        read_only: true
     depends_on:
       server:
         condition: service_healthy