diff --git a/.gitea/workflows/ci.yml b/.gitea/workflows/ci.yml
index 416b8597..d25672cb 100644
--- a/.gitea/workflows/ci.yml
+++ b/.gitea/workflows/ci.yml
@@ -45,6 +45,13 @@ jobs:
         run: npm run lint
         working-directory: frontend
 
+      # svelte-check / tsc — catches generated-type drift (e.g. a hand-edited
+      # api.ts whose required fields are missing from Document/Person mocks).
+      # `npm run lint` alone does not type-check. See PR #673 / #671.
+      - name: Type check
+        run: npm run check
+        working-directory: frontend
+
       - name: Assert no banned vi.mock patterns
         shell: bash
         run: |