ci: fail closed on sharded test gate

.github/workflows/ci.yml

@@ -84,8 +84,18 @@ jobs:
   test:
     runs-on: ubuntu-latest
     needs: [test-isolated, test-shared]
+    if: ${{ always() }}
     steps:
-      - run: echo "All test shards passed"
+      - name: Verify test shards passed
+        env:
+          ISOLATED_RESULT: ${{ needs.test-isolated.result }}
+          SHARED_RESULT: ${{ needs.test-shared.result }}
+        run: |
+          if [ "$ISOLATED_RESULT" != "success" ] || [ "$SHARED_RESULT" != "success" ]; then
+            echo "::error::test-isolated=${ISOLATED_RESULT}, test-shared=${SHARED_RESULT}"
+            exit 1
+          fi
+          echo "All test shards passed"
 
   typecheck:
     runs-on: ubuntu-latest

script/publish-workflow.test.ts

@@ -9,6 +9,10 @@ const workflowChecks = [
     testRuns: [
       "run: bun run script/run-ci-tests.ts --phase=isolated --shard-count=4 --shard-index=${{ matrix.shard }}",
       "run: bun run script/run-ci-tests.ts --phase=shared",
+      "if: ${{ always() }}",
+      "ISOLATED_RESULT: ${{ needs.test-isolated.result }}",
+      "SHARED_RESULT: ${{ needs.test-shared.result }}",
+      "echo \"::error::test-isolated=${ISOLATED_RESULT}, test-shared=${SHARED_RESULT}\"",
       "run: bun test src/shared/dist-bundle-bun-globals.test.ts",
     ],
   },