Migrate JavaScript to TypeScript with full type safety

- Rename all .js/.jsx files to .ts/.tsx across resources/js and theme dirs
- Add TypeScript 6.0 with strict mode, tsconfig.json
- Add type definitions for Inertia page props, Alpine.js, Turbolinks
- Update vite.config.js entries to .ts/.tsx extensions
- Update all Blade @vite() calls to match new .ts/.tsx entry points
- Add TypeScript ESLint config (replacing unused Vue plugin)
- Add @types/react, @types/react-dom, @types/lodash
- Add typecheck script and integrate into check pipeline
- Full tsc --noEmit, ESLint, and production build pass cleanly

resources/themes/atom/views/maintenance.blade.php

@@ -10,7 +10,7 @@
  <link rel="stylesheet" href="https://unpkg.com/flowbite@1.5.1/dist/flowbite.min.css"/>
  <script src="https://unpkg.com/flowbite@1.5.1/dist/flowbite.js"></script>
 
- @vite(['resources/themes/' . setting('theme') . '/css/app.css', 'resources/themes/' . setting('theme') . '/js/app.js'], 'build')
+ @vite(['resources/themes/' . setting('theme') . '/css/app.css', 'resources/themes/' . setting('theme') . '/js/app.ts'], 'build')
 
  <style>
  .gradient-bg {