test: add operationGuard tests to test runner (#120)

Add missing operationGuard.test.ts import and execution to runTests.ts.
This ensures operation guard tests are included in the test suite,
improving coverage from 92.82% to 93.15%.

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Model-Raw: claude-opus-4-5-20251101

Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>

Author: nullvariant

extensions/git-id-switcher/src/test/runTests.ts

@@ -21,6 +21,7 @@ import { runConfigChangeDetectorTests } from './configChangeDetector.test';
 import { runCommandAllowlistTests } from './commandAllowlist.test';
 import { runDocumentationTests } from './documentation.test';
 import { runWorkspaceTrustTests } from './workspaceTrust.test';
+import { runOperationGuardTests } from './operationGuard.test';
 
 async function main(): Promise<void> {
   console.log('╔════════════════════════════════════════════╗');
@@ -79,6 +80,9 @@ async function main(): Promise<void> {
     // Run workspace trust tests
     await runWorkspaceTrustTests();
 
+    // Run operation guard tests
+    await runOperationGuardTests();
+
     console.log('╔════════════════════════════════════════════╗');
     console.log('║   🎉 All Security Tests Passed!            ║');
     console.log('╚════════════════════════════════════════════╝\n');