chore(deps-dev): vite 5 → 8, @vitejs/plugin-react 4 → 6

Supersedes #138 and #139, which are coupled (plugin-react 6 requires
vite 7+) and were deferred in June because `vite build` failed with
`Rolldown failed to resolve import "openai"` — vite 8 swaps in the
rolldown bundler, and the renderer was transitively pulling
core/dist/providers/deepseek.js.

That blocker is gone: #192 split dependency-free model metadata from the
provider implementation specifically so provider/OpenAI SDK code is
absent from renderer bundles. The import rolldown could not resolve no
longer reaches the renderer graph, so no `build.rolldownOptions.external`
migration is needed.

Also replaces `__dirname` with `import.meta.dirname` in vite.config.ts.
vite 8 warns that `__dirname` is unsupported by `configLoader: 'native'`,
which is planned to become the default in a future major. The repo
requires Node >=22, so `import.meta.dirname` is available.

Verified on top of React 19 (#211), forced rebuild throughout:
- tsc -b --force, lint (--max-warnings=0), format:check: clean
- 1033 tests across 8 packages: pass
- pnpm build + full build:tauri-assets pipeline: pass
  (app-server.cjs 599,395 bytes — within the 768 KiB #208 budget)
- desktop Playwright protocol journey (4 tests): pass

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

Author: t

apps/desktop/package.json

@@ -40,9 +40,9 @@
     "@types/node": "^22.10.0",
     "@types/react": "^19.2.17",
     "@types/react-dom": "^19.2.3",
-    "@vitejs/plugin-react": "^4.3.0",
+    "@vitejs/plugin-react": "^6.0.2",
     "typescript": "^5.7.0",
-    "vite": "^5.4.0",
+    "vite": "^8.0.16",
     "vitest": "^2.1.9"
   },
   "engines": {

apps/desktop/vite.config.ts

@@ -13,9 +13,9 @@ const host = process.env.TAURI_DEV_HOST;
 
 export default defineConfig({
   plugins: [react()],
-  root: resolve(__dirname, 'src'),
+  root: resolve(import.meta.dirname, 'src'),
   base: './',
-  publicDir: resolve(__dirname, 'public'),
+  publicDir: resolve(import.meta.dirname, 'public'),
   clearScreen: false,
   server: {
     port: 5173,
@@ -26,13 +26,13 @@ export default defineConfig({
   },
   envPrefix: ['VITE_', 'TAURI_'],
   build: {
-    outDir: resolve(__dirname, 'dist'),
+    outDir: resolve(import.meta.dirname, 'dist'),
     emptyOutDir: true,
     sourcemap: true,
     target: 'es2022',
     minify: 'esbuild',
     rollupOptions: {
-      input: resolve(__dirname, 'src', 'index.html'),
+      input: resolve(import.meta.dirname, 'src', 'index.html'),
     },
   },
   resolve: {
@@ -42,13 +42,21 @@ export default defineConfig({
       // cherry-picked from compiled subpaths. The agent runtime is a sidecar.
       {
         find: /^@deepcode\/core\/dist\/(.+)$/,
-        replacement: resolve(__dirname, '..', '..', 'packages', 'core', 'dist') + '/$1',
+        replacement: resolve(import.meta.dirname, '..', '..', 'packages', 'core', 'dist') + '/$1',
       },
       // Bare import — anything that resolves through the index. We avoid
       // doing this in the renderer, but keep the alias so types still resolve.
       {
         find: '@deepcode/core',
-        replacement: resolve(__dirname, '..', '..', 'packages', 'core', 'src', 'index.ts'),
+        replacement: resolve(
+          import.meta.dirname,
+          '..',
+          '..',
+          'packages',
+          'core',
+          'src',
+          'index.ts',
+        ),
       },
     ],
   },