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/worker/src/processor.ts

@@ -8,6 +8,7 @@ import { generateDocs } from "./jobs/generate.js";
 interface GenerateJobData {
   repoUrl: string;
   generationId: string;
+  userId?: string;
 }
 
 const redis = new IORedis(process.env.REDIS_URL ?? "redis://localhost:6379");
@@ -109,7 +110,8 @@ export async function processGenerationJob(
         status: "COMPLETED",
         progress: 100,
         result: docs as any,
-        duration
+        duration,
+        userId: job.data.userId ?? null,
       }
     });