ci(runner): restore isolated Molecule CI

- Scope VirtualBox cleanup to repository-owned Molecule resources\n- Route lint to hosted runners and harden self-hosted workflow execution\n- Add diagnostics, fixture coverage, and reproducible lint validation

.pre-commit-config.yaml

@@ -20,6 +20,8 @@ repos:
     rev: v6.22.2
     hooks:
       - id: ansible-lint
+        additional_dependencies: [ansible-core==2.18.0]
+        language_version: python3.12
   - repo: https://github.com/shellcheck-py/shellcheck-py
     rev: v0.9.0.6
     hooks:
@@ -33,3 +35,11 @@ repos:
     rev: 0.6.4
     hooks:
       - id: fix-smartquotes
+  - repo: local
+    hooks:
+      - id: cleanup-runner-resources-test
+        name: cleanup runner resources test
+        entry: .github/scripts/test-cleanup-runner-resources.sh
+        language: system
+        pass_filenames: false
+        files: ^\.github/scripts/(cleanup-runner-resources|test-cleanup-runner-resources)\.sh$