Use native vgi.v3 runner with safe SHM pool lifetime

Author: rustyconover

.github/workflows/integration.yml

@@ -20,7 +20,7 @@ concurrency:
 
 env:
   # Match the test suite to the native runner built from this exact revision.
-  VGI_REF: a83ff7e8cd46aa840a10e78fe9b31603931824c2
+  VGI_REF: 7b1e1fbbe745d77fdacf52d6d135fa3ef4491d48
   VGI_NATIVE_RUNNER_BRANCH: release/vgi-v3-ci-20261028
   # Disable local sibling substitution: validate the released Maven dependency.
   VGI_RPC_JAVA_DIR: /nonexistent