feat: add subscription service — user auth, Stripe billing, API keys, dashboard

- NextAuth v5 with email+password credentials, JWT sessions
- Registration, login, email verification, password reset flows
- Stripe integration: Free (15/day), Starter ($5/1k/mo), Pro ($20/100k/mo)
- API key management (cb_ prefix) with hash-based validation
- Dashboard with generations history, settings, billing management
- Rate limiting: Redis daily counter (free), DB monthly (paid)
- Generate route auth: Bearer API key + session, anonymous allowed
- Worker userId propagation for generation history
- Pricing section on landing page, auth-aware navbar
- Middleware with route protection, CORS for codeboard.vectry.tech
- Docker env vars for auth, Stripe, email (smtp.migadu.com)

apps/web/package.json

@@ -14,19 +14,28 @@
     "@codeboard/database": "*",
     "@codeboard/shared": "*",
     "@tailwindcss/typography": "^0.5.19",
+    "bcryptjs": "^3.0.3",
     "bullmq": "^5.34.0",
+    "clsx": "^2.1.1",
     "cmdk": "^1.1.1",
     "ioredis": "^5.4.0",
     "lucide-react": "^0.563.0",
     "mermaid": "^11.4.0",
     "next": "^14.2.0",
+    "next-auth": "^5.0.0-beta.30",
+    "nodemailer": "^7.0.7",
     "react": "^18.3.0",
     "react-dom": "^18.3.0",
-    "react-markdown": "^9.0.0"
+    "react-markdown": "^9.0.0",
+    "stripe": "^20.3.1",
+    "tailwind-merge": "^2.6.0",
+    "zod": "^3.24.0"
   },
   "devDependencies": {
     "@tailwindcss/postcss": "^4.0.0",
+    "@types/bcryptjs": "^2.4.6",
     "@types/node": "^20.0.0",
+    "@types/nodemailer": "^6.4.17",
     "@types/react": "^18.3.0",
     "@types/react-dom": "^18.3.0",
     "postcss": "^8.5.0",