feat(frontend): 时区下拉、表格时区列与刷新反馈

- 编辑器 IANA 时区改为 Select，当前只保留 Asia/Shanghai；编辑旧任务时保留其已有值
- 任务表新增「时区」列，类型标签并入名称列，重新分配列宽
- 手动刷新改为独立状态 + 顶部进度条 + 固定按钮宽度，避免刷新时工具栏左右跳动与旧内容残留的观感

frontend/src/App.css

@@ -62,9 +62,44 @@
 /* ---------- 任务列表 ---------- */
 
 .task-card {
+  position: relative;
   overflow: hidden;
 }
 
+/* 手动刷新时的顶部进度条：不改变表格布局，也避免旧数据看起来像「残影」 */
+.refresh-bar {
+  position: absolute;
+  z-index: 2;
+  top: 0;
+  right: 0;
+  left: 0;
+  height: 2px;
+  overflow: hidden;
+  background-color: var(--su-color-primary-soft);
+  pointer-events: none;
+}
+
+.refresh-bar::after {
+  content: '';
+  position: absolute;
+  top: 0;
+  bottom: 0;
+  left: 0;
+  width: 40%;
+  background-color: var(--su-color-primary);
+  animation: refresh-slide 1.1s ease-in-out infinite;
+}
+
+@keyframes refresh-slide {
+  from {
+    transform: translateX(-100%);
+  }
+
+  to {
+    transform: translateX(250%);
+  }
+}
+
 /* 表格嵌在卡片里：去掉自身描边与圆角，避免「卡片套卡片」 */
 .task-table {
   border: 0;
@@ -99,6 +134,12 @@
   min-width: 140px;
 }
 
+/* 「刷新」和「同步中...」字数不同，固定宽度避免刷新时工具栏左右跳动 */
+.refresh-button {
+  min-width: 68px;
+  justify-content: center;
+}
+
 .task-name-cell {
   display: flex;
   min-width: 0;
@@ -106,9 +147,16 @@
   gap: 2px;
 }
 
+.task-name-row {
+  display: flex;
+  min-width: 0;
+  align-items: center;
+  gap: 6px;
+}
+
 .task-name {
   display: block;
-  max-width: 240px;
+  max-width: 170px;
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
@@ -119,6 +167,10 @@
   font-family: var(--su-font-mono);
 }
 
+.timezone-cell {
+  white-space: nowrap;
+}
+
 .schedule-cell {
   display: flex;
   align-items: flex-start;

frontend/src/components/TaskEditorModal.tsx

@@ -60,13 +60,7 @@ const HTTP_METHOD_OPTIONS = [
   { value: 'POST', label: 'POST' },
 ]
 
-const TIMEZONE_SUGGESTIONS = [
+const TIMEZONE_OPTIONS = ['Asia/Shanghai']
-  'Asia/Shanghai',
-  'Asia/Hong_Kong',
-  'UTC',
-  'Europe/London',
-  'America/New_York',
-]
 
 const CRON_PREVIEW_COUNTS = [3, 5, 8, 10]
 
@@ -112,6 +106,11 @@ export function TaskEditorModal({
   const cronValue = watch('cron')
   const timezoneValue = watch('timezone')
   const scriptPreview = watch('script')
+  // 当前只开放 Asia/Shanghai；编辑旧任务时把它已有的时区也保留成一个选项，
+  // 避免下拉显示成空值。
+  const timezoneOptions = Array.from(
+    new Set(timezoneValue ? [...TIMEZONE_OPTIONS, timezoneValue] : TIMEZONE_OPTIONS),
+  ).map((zone) => ({ value: zone, label: zone }))
   const debouncedCron = useDebouncedValue(cronValue, 300)
   const debouncedTimezone = useDebouncedValue(timezoneValue, 300)
   const debouncedWorkingDir = useDebouncedValue(
@@ -425,23 +424,19 @@ export function TaskEditorModal({
         </section>
 
         <div className="form-grid">
-          <FormField
+          <FormField label="IANA 时区" error={errors.timezone?.message}>
-            label="IANA 时区"
+            <Controller
-            htmlFor="task-timezone"
+              control={control}
-            error={errors.timezone?.message}
+              name="timezone"
-          >
+              render={({ field }) => (
-            <Input
+                <Select
-              id="task-timezone"
+                  className="form-select"
-              {...register('timezone')}
+                  options={timezoneOptions}
-              list="timezone-options"
+                  value={field.value}
-              placeholder="Asia/Shanghai"
+                  onChange={field.onChange}
-              aria-invalid={Boolean(errors.timezone)}
+                />
+              )}
             />
-            <datalist id="timezone-options">
-              {TIMEZONE_SUGGESTIONS.map((zone) => (
-                <option value={zone} key={zone} />
-              ))}
-            </datalist>
           </FormField>
 
           <FormField label="任务类型 (Action Type)">

frontend/src/pages/TaskDashboard.tsx

@@ -68,12 +68,12 @@ const ACTION_TYPE_OPTIONS = [
 ]
 
 const TABLE_COLUMNS: TableColumn[] = [
-  { key: 'name', title: '名称 / 任务标识', width: 260 },
+  { key: 'name', title: '名称 / 任务标识', width: 250 },
-  { key: 'schedule', title: '调度周期', width: 240 },
+  { key: 'schedule', title: '调度周期', width: 210 },
-  { key: 'type', title: '类型', width: 96 },
+  { key: 'timezone', title: '时区', width: 120 },
-  { key: 'status', title: '状态', width: 120 },
+  { key: 'status', title: '状态', width: 110 },
-  { key: 'timeout', title: '超时配置', width: 100 },
+  { key: 'timeout', title: '超时', width: 90 },
-  { key: 'actions', title: '操作', align: 'right', width: 300 },
+  { key: 'actions', title: '操作', align: 'right', width: 260 },
 ]
 
 export function TaskDashboard() {
@@ -89,6 +89,7 @@ export function TaskDashboard() {
   const [logTask, setLogTask] = useState<Task | null>(null)
   const [initialRunId, setInitialRunId] = useState<number | null>(null)
   const [actionError, setActionError] = useState<string | null>(null)
+  const [refreshing, setRefreshing] = useState(false)
   const [queryDraft, setQueryDraft] = useState(q)
   const debouncedQuery = useDebouncedValue(queryDraft, 300)
 
@@ -229,9 +230,19 @@ export function TaskDashboard() {
     setEditorOpen(true)
   }
 
-  const refreshAll = () => {
+  const refreshAll = async () => {
-    void queryClient.invalidateQueries({ queryKey: ['tasks'] })
+    if (refreshing) {
-    void queryClient.invalidateQueries({ queryKey: ['health'] })
+      return
+    }
+    setRefreshing(true)
+    try {
+      await Promise.all([
+        queryClient.invalidateQueries({ queryKey: ['tasks'] }),
+        queryClient.invalidateQueries({ queryKey: ['health'] }),
+      ])
+    } finally {
+      setRefreshing(false)
+    }
   }
 
   const rows = tasks.map((task) => {
@@ -244,9 +255,12 @@ export function TaskDashboard() {
       id: task.id,
       name: (
         <div className="task-name-cell">
-          <Text className="task-name" strong>
+          <div className="task-name-row">
-            {task.name}
+            <Text className="task-name" strong>
-          </Text>
+              {task.name}
+            </Text>
+            <Tag shape="rounded">{actionTypeLabel(task.action.type)}</Tag>
+          </div>
           <Text className="task-id" size="xs" tone="muted">
             {task.id}
           </Text>
@@ -255,9 +269,6 @@ export function TaskDashboard() {
       schedule: (
         <div className="schedule-cell">
           <code className="code-chip">{task.cron}</code>
-          <Text size="xs" tone="muted">
-            {task.timezone}
-          </Text>
           <Text size="xs" tone="muted">
             {task.enabled
               ? nextRuns.get(task.id)
@@ -267,8 +278,10 @@ export function TaskDashboard() {
           </Text>
         </div>
       ),
-      type: (
+      timezone: (
-        <Tag shape="rounded">{actionTypeLabel(task.action.type)}</Tag>
+        <Text className="timezone-cell" size="sm" tone="sub">
+          {task.timezone}
+        </Text>
       ),
       status: <EnabledBadge enabled={task.enabled} />,
       timeout: (
@@ -365,6 +378,9 @@ export function TaskDashboard() {
       </section>
 
       <Card padding="none" className="task-card">
+        {refreshing ? (
+          <div className="refresh-bar" role="progressbar" aria-label="正在刷新" />
+        ) : null}
         <div className="toolbar">
           <SearchField
             className="toolbar-search"
@@ -403,8 +419,12 @@ export function TaskDashboard() {
                 清除筛选
               </TextButton>
             ) : null}
-            <TextButton onClick={refreshAll} disabled={tasksQuery.isFetching}>
+            <TextButton
-              {tasksQuery.isFetching ? '同步中...' : '刷新'}
+              className="refresh-button"
+              onClick={() => void refreshAll()}
+              disabled={refreshing}
+            >
+              {refreshing ? '同步中...' : '刷新'}
             </TextButton>
           </div>
         </div>