test(metadata): expand end-to-end scenarios and assertions

.github/workflows/e2e-metadata-write.yml

@@ -3,6 +3,12 @@ run-name: ${{ format('Metadata Write E2E - {0}', github.ref_name) }}
 
 on:
   workflow_dispatch:
+    inputs:
+      vitest-args:
+        description: "Optional vitest args (examples: --shard=1/2, --testNamePattern=\"concurrency hardening\")"
+        required: false
+        default: ""
+        type: string
   push:
     paths:
       - "server/src/modules/book/**"
@@ -46,3 +52,4 @@ jobs:
       check-name: Server Metadata Write E2E
       artifact-name: metadata-write-e2e-report
       job-timeout-minutes: 60
+      vitest-args: ${{ github.event_name == 'workflow_dispatch' && inputs.vitest-args || '' }}

.github/workflows/e2e-runner.yml

@@ -20,6 +20,11 @@ on:
         required: false
         type: number
         default: 45
+      vitest-args:
+        description: "Optional extra args forwarded to vitest (for shard/testNamePattern reruns)"
+        required: false
+        type: string
+        default: ""
 
 env:
   FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: "true"
@@ -65,7 +70,12 @@ jobs:
 
       - name: Run e2e suite
         shell: bash
-        run: pnpm run test:e2e -- ${{ inputs.suite-id }}
+        run: |
+          if [ -n "${{ inputs.vitest-args }}" ]; then
+            pnpm run test:e2e -- ${{ inputs.suite-id }} ${{ inputs.vitest-args }}
+          else
+            pnpm run test:e2e -- ${{ inputs.suite-id }}
+          fi
 
       - name: Publish test report annotations
         if: always()