Serve the wasm and scripts gzip-compressed (packed at build time)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Dockerfile

@@ -31,4 +31,6 @@ COPY nginx.conf /etc/nginx/conf.d/default.conf
 COPY www/ /usr/share/nginx/html/
 COPY --from=build /out/ /usr/share/nginx/html/
 COPY --from=standalone /out/standalone/ /usr/share/nginx/html/standalone/
+# packed once for gzip_static (nginx.conf)
+RUN cd /usr/share/nginx/html && gzip -k -9 dungeoncraft.wasm mq_js_bundle.js standalone/DungeonCraft.html
 EXPOSE 80