fix(canvas): Live2D 外观 - 补齐随部署发布的 Cubism Core 运行库

.gitignore

@@ -73,6 +73,5 @@ camera_language_guide.md
 backend/cmd/server/server
 # One-off local probe scripts and their compiled output.
 backend/tmp_*
-# Deployment-owned proprietary Live2D Core; never redistribute in this repository.
-/web/public/live2d/live2dcubismcore.min.js
+# Keep the runtime in source control; its optional debug map is not deployed.
 /web/public/live2d/live2dcubismcore.min.js.map