Commit Needle production dist and nginx-only Docker image

- Track Needle/MenuScene/dist and Needle/SampleScene/dist for container deploys
- Dockerfile copies pre-built dist (no npm in image); rebuild with npm run build before commit
- Fix Needle .gitignore: /assets/ so dist/assets is not ignored
- Git LFS: track *.wasm; relax .dockerignore so dist is sent as build context

Made-with: Cursor

.dockerignore

@@ -14,12 +14,9 @@ MemoryCaptures/
 Recordings/
 obj/
 
-# Host-side Node (reinstalled in container)
+# Host-side Node (not needed when image serves pre-built dist)
 **/node_modules/
 
-# Build output (rebuilt in container)
-**/Needle/*/dist/
-
 # OS
 .DS_Store
 Thumbs.db