diff --git a/openspec/changes/user-accounts/tasks.md b/openspec/changes/user-accounts/tasks.md
index f24f284..53a4b27 100644
--- a/openspec/changes/user-accounts/tasks.md
+++ b/openspec/changes/user-accounts/tasks.md
@@ -17,7 +17,7 @@
 - [x] 3.1 `[sonnet]` Create `src/auth.ts` with Auth.js v5 config: JWT strategy, Credentials provider (email/password with bcryptjs verify), Google OAuth provider
 - [x] 3.2 `[sonnet]` Add JWT callback to embed `user.id` in token and session callback to expose `session.user.id`
 - [x] 3.3 `[sonnet]` Handle Google OAuth sign-in callback: create user on first sign-in, find existing user on returning sign-in
-- [ ] 3.4 `[haiku]` Create `src/app/api/auth/[...nextauth]/route.ts` exporting GET/POST handlers
+- [x] 3.4 `[haiku]` Create `src/app/api/auth/[...nextauth]/route.ts` exporting GET/POST handlers
 
 ## 4. Registration API
 
diff --git a/src/app/api/auth/[...nextauth]/route.ts b/src/app/api/auth/[...nextauth]/route.ts
new file mode 100644
index 0000000..2e06971
--- /dev/null
+++ b/src/app/api/auth/[...nextauth]/route.ts
@@ -0,0 +1 @@
+export { GET, POST } from "@/auth";