Isolate CI database journey and stabilize E2E dependency cache

apps/web/vite.config.ts

@@ -4,6 +4,15 @@ import { defineConfig } from 'vite';
 
 export default defineConfig({
   plugins: [react()],
+  // Keep Vitest's dependency cache separate from the browser test server.
+  cacheDir: process.env.VITE_E2E === '1' ? 'node_modules/.vite-e2e' : undefined,
+  optimizeDeps: process.env.VITE_E2E === '1' ? {
+    // Lazy routes and workers must be scanned before browsers cache React chunks.
+    // Late discovery otherwise mixes cached and newly optimized React instances
+    // across full document navigations when HMR is disabled.
+    entries: ['index.html', 'src/**/*.{ts,tsx}', '!src/**/*.test.{ts,tsx}', '!src/**/*.d.ts', '!src/test/**'],
+    include: ['react', 'react-dom', 'react-dom/client', 'react/jsx-runtime', 'react/jsx-dev-runtime'],
+  } : undefined,
   build: {
     target: 'es2022',
   },