fix: bundle path

[tianzhou]

Fix #135

[Copilot]

Pull request overview

This PR fixes the bundle path issue (#135) by aligning the frontend build output directory with the server's static file serving path. The changes consolidate the build output under dist/public, making the production build structure cleaner and more predictable.

Key Changes:

• Frontend build output redirected from frontend/dist to dist/public
• Server static file serving path updated to match the new build location

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
frontend/vite.config.ts	Configures Vite to output built frontend files to ../dist/public instead of the default dist directory
src/server.ts	Updates the static file serving path to dist/public (relative to compiled code location) to match the new frontend build output