Summary

• show the plugin auto mode as Enabled / 启用插件 in the strategy switch console
• keep the submitted workflow value as auto so backend behavior is unchanged
• update the helper text and validation assertions

Tests

• node --input-type=module --check < web/strategy-switch-console/worker.js
• inline index.html script node --check
• node --experimental-default-type=module tests/strategy_switch_worker_validation.mjs
• /tmp/qsl-followup-pytest-venv-20260619/bin/python -m pytest tests/test_runtime_settings.py -q