新增: 设置页 UX 重构(master-detail 左导航 + 搜索 + 即时反馈 + 导入导出)

- SettingsNav 左导航 7 类 + 顶部搜索(索引匹配 label/desc 高亮定位)
- GeneralPanel 拆分 Appearance/Performance/Advanced Section
- SettingRow 统一行 + 即时反馈(已保存)+ 下轮生效 badge
- 统一组件库 settings.css(scoped 重复 class 抽全局)
- 导入导出(默认排除 keyring 密钥)
- activeCategory 持久化 + 窄屏折叠 tab

src/components/settings/AllowedDirsPanel.vue

@@ -142,20 +142,10 @@ onMounted(load)
 </script>
 
 <style scoped>
-.panel {
-  background: var(--df-bg-card);
-  border: 0.5px solid var(--df-border);
-  border-radius: var(--df-radius-lg);
-  padding: var(--df-pad-panel);
-}
-.panel-header {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  margin-bottom: var(--df-gap-head);
-}
-.panel-header h2 { font-size: 15px; font-weight: 500; }
-
+/* 阶段1/3 UX 重构:panel/panel-header/empty-hint/btn 系列/setting-select/
+   已迁移到 settings.css 全局。
+   本 scoped 仅保留 AllowedDirsPanel 特有样式:allowed-dirs/dir-row/dir-path/
+   add-row/dir-input/actions。 */
 .allowed-dirs { display: flex; flex-direction: column; gap: 8px; }
 .allowed-dirs-desc {
   font-size: 12px; color: var(--df-text-dim); margin: 0 0 4px; line-height: 1.5;
@@ -172,26 +162,7 @@ onMounted(load)
   overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
   flex: 1; margin-right: 12px;
 }
-.empty-hint { font-size: 12px; color: var(--df-text-dim); padding: 8px 0; }
 .add-row { display: flex; gap: 8px; margin-top: 4px; }
 .dir-input { flex: 1; min-width: 0; }
 .actions { display: flex; gap: 8px; margin-top: 8px; }
-
-.btn {
-  padding: 8px 16px; border: none; border-radius: var(--df-radius-sm);
-  font-size: 13px; cursor: pointer; transition: all 0.15s;
-}
-.btn-primary { background: var(--df-accent); color: #fff; }
-.btn-primary:hover { background: var(--df-accent-hover); }
-.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }
-.btn-ghost { background: transparent; color: var(--df-text-secondary); border: 0.5px solid var(--df-border); }
-.btn-ghost:hover { background: var(--df-bg-card); color: var(--df-text); }
-.btn-ghost:disabled { opacity: 0.5; cursor: not-allowed; }
-.btn-sm { padding: 4px 12px; font-size: 12px; }
-
-.setting-select {
-  padding: 6px 12px; background: var(--df-bg); border: 0.5px solid var(--df-border);
-  border-radius: var(--df-radius-sm); color: var(--df-text); font-size: 13px; outline: none;
-}
-.setting-select:focus { border-color: var(--df-accent); }
 </style>