Upgrade Vite from v4 to v7 (v4 is EOL)

[Tim020]

Problem

Vite 4.5.5 is EOL (End of Life) and no longer receives security updates. We should upgrade to Vite 7.x for:

• Security patches
• Performance improvements
• Better Node 24 support
• New features

Current Setup

• Vite 4.5.5
• @vitejs/plugin-vue2 2.3.4
• Manual chunking configuration for vendor bundles

Migration Considerations

• Review Vite 7 breaking changes
• Test @vitejs/plugin-vue2 compatibility with Vite 7
• Verify manual chunking config still works
• Check build output size changes
• Test dev server performance
• Verify all build scripts work
• Update vite.config.js if needed

References

• Vite 7 Migration Guide
• Vite 7 Changelog

Estimated Effort

1-2 hours (mostly testing)