Feature 01 task 2: Vite React TypeScript web skeleton

Add web/ with React 19, TypeScript, Vite, React Router 7 and TanStack
Query 5. Scripts: dev, build (tsc --noEmit + vite build), preview,
typecheck and test (Vitest run, jsdom, Testing Library). The dev server
proxies /api, /auth and /media to http://localhost:8080. App renders a
placeholder "MealQuest" shell covered by a smoke test. package-lock.json
is committed; node_modules and dist stay ignored.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

web/vite.config.ts

@@ -0,0 +1,19 @@
+import { defineConfig } from 'vitest/config'
+import react from '@vitejs/plugin-react'
+
+const backend = 'http://localhost:8080'
+
+export default defineConfig({
+  plugins: [react()],
+  server: {
+    proxy: {
+      '/api': backend,
+      '/auth': backend,
+      '/media': backend,
+    },
+  },
+  test: {
+    environment: 'jsdom',
+    setupFiles: ['./src/test/setup.ts'],
+  },
+})