Reenable NPM integration tests (#10623)

.github/actions/verify-release/action.yml

@@ -70,5 +70,18 @@ runs:
           exit 1
         fi
 
-# TODO: Add back integration tests once we resolve
-# https://github.com/google-gemini/gemini-cli/issues/10517
+    - name: 'Install dependencies for integration tests'
+      shell: 'bash'
+      working-directory: './verify'
+      run: 'npm ci'
+
+    - name: '🔬 Run integration tests against NPM release'
+      working-directory: './verify'
+      env:
+        GEMINI_API_KEY: '${{ inputs.gemini_api_key }}'
+        INTEGRATION_TEST_USE_INSTALLED_GEMINI: 'true'
+        # We must diable CI mode here because it interferes with interactive tests.
+        # See https://github.com/google-gemini/gemini-cli/issues/10517
+        CI: 'false'
+      shell: 'bash'
+      run: 'npm run test:integration:sandbox:none'