The frontend currently uses all Vite defaults — generic title, Vite favicon, no manifest, no meta tags. Clean it up so it looks polished and professional as "Nuzlocke Tracker".
## Current State
- Page title: "frontend" (Vite default)
- Favicon: `/vite.svg` (Vite logo)
- No `manifest.json` / `site.webmanifest`
- No meta description or Open Graph tags
- No theme-color meta tag
-`package.json` name is "frontend"
- Default `react.svg` sitting unused in `src/assets/`