revert: remove park-meta.json copy from Dockerfile

Volume mount hides image-layer files on existing deployments anyway.
Deploy manually: curl -o park-meta.json <gitea-raw-url>

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

Dockerfile

@@ -44,13 +44,8 @@ COPY --from=deps --chown=nextjs:nodejs /app/node_modules ./node_modules
 RUN npx playwright install --with-deps chromium && \
     chown -R nextjs:nodejs /app/.playwright
 
-# Seed data directory with park-meta.json (RCDB coaster lists + rcdb_id mappings).
-# Must be copied before VOLUME so Docker initialises a fresh named volume with
-# this file already present. Existing volumes retain their own copy.
+# SQLite data directory — mount a named volume here for persistence
 RUN mkdir -p /app/data && chown nextjs:nodejs /app/data
-COPY --from=builder --chown=nextjs:nodejs /app/data/park-meta.json ./data/park-meta.json
-
-# SQLite database lives here — mount a named volume for persistence
 VOLUME ["/app/data"]
 
 USER nextjs