chore: migrate Vite config to Vite 8 beta (Rolldown) (#8152)

Prepares Vite config for Vite 8 by migrating from esbuild/Rollup to
Rolldown/Oxc.

## Changes
- Migrate `build.rollupOptions` → `build.rolldownOptions`
- Replace `manualChunks` with `codeSplitting.groups`
- Update Storybook config with `strictExecutionOrder` for module loading
compatibility

## Testing
- [x] `pnpm typecheck` passes
- [x] `pnpm build` succeeds
- [x] `pnpm test:unit` passes

---------

Co-authored-by: Amp <amp@ampcode.com>

apps/desktop-ui/vite.config.mts

@@ -64,7 +64,7 @@ export default defineConfig(() => {
       })
     ],
     build: {
-      minify: SHOULD_MINIFY ? ('esbuild' as const) : false,
+      minify: SHOULD_MINIFY,
       target: 'es2022',
       sourcemap: true
     }