Fix circular dependency breaking ncc bundle

Don't export authRoutes from barrel file to break the cycle:
services.ts → auth/index.ts → auth/routes.ts → services.ts

Import authRoutes directly from ./auth/routes instead.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

express/routes.ts

@@ -2,7 +2,7 @@
 
 import nunjucks from "nunjucks";
 import { DateTime } from "ts-luxon";
-import { authRoutes } from "./auth";
+import { authRoutes } from "./auth/routes";
 import { contentTypes } from "./content-types";
 import { multiHandler } from "./handlers";
 import { HttpCode, httpCodes } from "./http-codes";