feat(auth): implement Auth module with register, login, JWT, guards, and CQRS

- Add RefreshToken and OAuthAccount models to Prisma schema
- Implement clean architecture: domain (entities, VOs, events, repo interfaces),
  infrastructure (Prisma repos, Passport strategies, token service),
  application (CQRS command/query handlers), presentation (controller, guards, DTOs)
- Endpoints: POST /auth/register, /auth/login, /auth/refresh, GET /auth/profile,
  GET /auth/profile/agent, PATCH /auth/kyc
- JWT access + refresh token rotation with family-based revocation
- Role-based guards (BUYER, SELLER, AGENT, ADMIN)
- 16 unit tests (value objects, entity) + integration test suite
- All 80 tests passing, clean TypeScript build

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/vitest.integration.config.ts

@@ -0,0 +1,16 @@
+import path from 'path';
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    globals: true,
+    environment: 'node',
+    include: ['src/**/*.integration.spec.ts'],
+    testTimeout: 30_000,
+  },
+  resolve: {
+    alias: {
+      '@modules': path.resolve(__dirname, 'src/modules'),
+    },
+  },
+});