/* 顶栏主题切换：页面加载时恢复上次主题 + 同步按钮图标
   约定：light 主题显示 🌙（点击切暗），dark 主题显示 ☀️（点击切亮） */
(function(){
    if (typeof bricks === 'undefined') return;
    var KEY = 'pipeline_ui_theme';

    function applyTheme(t){
        document.documentElement.setAttribute('data-theme', t);
        var btn = bricks.getWidgetById('theme_toggle_btn', bricks.app);
        if (btn && btn.dom_element){
            btn.opts.label = (t === 'light') ? '🌙' : '☀️';
            btn.dom_element.textContent = btn.opts.label;
        }
    }
    window.applyPipelineTheme = applyTheme;

    function _start(){
        if (bricks.app && bricks.getWidgetById){
            var t = null;
            try { t = localStorage.getItem(KEY); } catch(e) {}
            applyTheme(t || 'light');
        } else {
            setTimeout(_start, 300);
        }
    }
    setTimeout(_start, 300);
})();