chore(deploy): mount theme store at /data/theme_store

Points THEME_STORE_DIR at the existing solitaire-db PVC so catalog
content survives pod restarts. Scan is startup-only; restart the
deployment after adding zips.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

deploy/deployment.yaml

@@ -34,6 +34,11 @@ spec:
                   key: jwt-secret
             - name: SERVER_PORT
               value: "8080"
+            # Theme-store catalog directory on the persistent volume.
+            # Scanned once at startup — after dropping new theme zips
+            # into /data/theme_store, restart the deployment.
+            - name: THEME_STORE_DIR
+              value: /data/theme_store
           volumeMounts:
             - name: db-data
               mountPath: /data