Casdoor v4.0.0 changes frontend framework and static file paths

Casdoor v4.0.0 introduces a significant change by replacing the Ant Design console with a new frontend built using shadcn/ui and Vite, as detailed in the project's GitHub release notes. This update alters the build output layout for static files, moving from create-react-app's build/static/{js,css} structure to Vite's build/assets/. Operators relying on CDNs or reverse proxies to serve Casdoor's static files must update their configurations to reflect the new paths. While the previous Ant Design frontend remains in the codebase under web-old/, it is no longer built or served.

Before upgrading, operators should carefully review their static file serving setup, particularly if they use caching mechanisms or path-specific rules in their CDN or reverse proxy configurations. Failure to update these paths could result in broken functionality or missing assets in the Casdoor console. This change aligns with a broader trend in projects adopting modern build tools like Vite for improved performance and developer experience, but it also underscores the importance of verifying compatibility with existing infrastructure during upgrades.