fix(ci): download only required artifacts in release summary

The Release summary job was downloading ALL artifacts (~780 MB)
including Docker images it never uses. The 648 MB docker-image-local
consistently timed out after 5 retries. Now downloads only the 4
small artifacts actually needed (~2 KB total).

.github/workflows/release-gate.yml

@@ -635,11 +635,18 @@ jobs:
     steps:
       - uses: actions/checkout@v4.3.1
 
-      - name: Download all artifacts
+      - name: Download image-size artifacts
         uses: actions/download-artifact@v4.3.0
         with:
+          pattern: image-size-*
           path: /tmp/artifacts
 
+      - name: Download audit-checks artifact
+        uses: actions/download-artifact@v4.3.0
+        with:
+          name: audit-checks-results
+          path: /tmp/artifacts/audit-checks-results
+
       - name: Build summary comment
         id: summary
         env: