chore: update auth-service to not be class based

tests/unit/auth/create-auth.ts

@@ -1,13 +1,13 @@
 import { drizzle } from "drizzle-orm/node-sqlite";
 import { migrate } from "drizzle-orm/node-sqlite/migrator";
 
-import { AuthService } from "~/server/web/auth";
+import { createAuthService } from "~/server/web/auth";
 
 export function createTestAuth() {
   const db = drizzle(":memory:");
   migrate(db, { migrationsFolder: "./drizzle" });
 
-  const auth = new AuthService({
+  const auth = createAuthService({
     secret: "test-secret-key-for-unit-tests",
     db,
     cookie: {