Upgrade Vite to 6.2.3 and dependencies

- Update Vite from 5.0.12 to 6.2.3
- Update vite-plugin-pwa from 0.17.5 to 1.0.0
- Update TypeScript from 5.2.2 to 5.8.2
- Update ts-jest from 29.1.2 to 29.3.0
- Modernize vite.config.ts with defineConfig API

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: cdroulers