fix: add a typecheck step after testing.

This ensures that what we end up with compiles. It's possible for all of
our tests to work, but the app pulls in some benign
file that accidentally downs the whole thing

This should stop that from ever happening.

server/.github/workflows/test-build-deploy.yml

@@ -48,6 +48,9 @@ jobs:
       - name: Lint Code
         run: pnpm lint
 
+      - name: Typecheck Code
+        run: pnpm typecheck
+
       - name: Upload Coverage
         if: always()
         run: |