feat(web): scaffold Vite + React + TS SPA with Vitest

Bootstraps the web/ SPA: Vite 6 + React 19 + TypeScript 5.8, Vitest
with jsdom, @testing-library/react, and a green smoke test asserting
the App renders its Collection heading.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

web/package.json

@@ -0,0 +1,32 @@
+{
+  "name": "web",
+  "private": true,
+  "version": "0.0.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc -b && vite build",
+    "preview": "vite preview",
+    "test": "vitest run",
+    "test:watch": "vitest",
+    "typecheck": "tsc -b --noEmit",
+    "lint": "eslint .",
+    "gen:api": "openapi-typescript http://localhost:8080/api-docs/openapi.json -o src/api/schema.d.ts"
+  },
+  "dependencies": {
+    "react": "^19.1.0",
+    "react-dom": "^19.1.0"
+  },
+  "devDependencies": {
+    "@testing-library/jest-dom": "^6.6.3",
+    "@testing-library/react": "^16.3.0",
+    "@testing-library/user-event": "^14.6.1",
+    "@types/react": "^19.1.5",
+    "@types/react-dom": "^19.1.3",
+    "@vitejs/plugin-react": "^4.5.2",
+    "jsdom": "^26.1.0",
+    "typescript": "~5.8.3",
+    "vite": "^6.3.5",
+    "vitest": "^3.2.2"
+  }
+}