Add stage 2: Vue/TypeScript PWA shell with auth-gated routing

Backend: new migration adds users.email_verified_at (null = unverified);
registration leaves it null, and the register/login/me payloads now expose
email_verified and email_verified_at.

Frontend (web/): Vite + Vue 3 + TypeScript PWA (vite-plugin-pwa). Pinia auth
store keeps the token in localStorage and validates it via GET /api/me on
load. vue-router guards redirect unauthenticated visitors to /login,
preserving the intended path; /register creates an account and signs in
immediately (with the email unverified). Placeholder home page, minimal
styling, generated icons. Dev server proxies /api to the API.

docker-compose.yml gains an optional "web" service (profile: frontend) so
`docker compose --profile frontend up -d` runs the dev server alongside the
API; `docker compose up -d` still starts the API alone.

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

web/tsconfig.node.json

@@ -0,0 +1,23 @@
+{
+  "compilerOptions": {
+    "tsBuildInfoFile": "./node_modules/.tmp/tsconfig.node.tsbuildinfo",
+    "target": "es2023",
+    "lib": ["ES2023"],
+    "types": ["node"],
+    "skipLibCheck": true,
+
+    /* Bundler mode */
+    "module": "nodenext",
+    "allowImportingTsExtensions": true,
+    "verbatimModuleSyntax": true,
+    "moduleDetection": "force",
+    "noEmit": true,
+
+    /* Linting */
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "erasableSyntaxOnly": true,
+    "noFallthroughCasesInSwitch": true
+  },
+  "include": ["vite.config.ts"]
+}