fix: auth handler + circular imports — Phase 1 verification (P1-009) (#73)

Co-authored-by: Jason Woltje <jason@diversecanvas.com>
Co-committed-by: Jason Woltje <jason@diversecanvas.com>

apps/gateway/src/auth/auth.guard.ts

@@ -8,7 +8,7 @@ import {
 import { fromNodeHeaders } from 'better-auth/node';
 import type { Auth } from '@mosaic/auth';
 import type { FastifyRequest } from 'fastify';
-import { AUTH } from './auth.module.js';
+import { AUTH } from './auth.tokens.js';
 
 @Injectable()
 export class AuthGuard implements CanActivate {