优化: 重新设计 Cron 编辑器交互体验

核心问题：预设选中后下方 Tab 编辑器仍展开显示混乱的技术细节。

重新设计为三层交互：
1. 预设按钮（一键选择常见场景，选中高亮，无多余 UI）
2. 自定义选择器（每天/每周/每月/间隔四种模式，直观的时间选择器
   和星期按钮，无需理解 cron 语法）
3. 手动输入（高级用户直接编辑 cron 表达式）

同时优化中文描述为自然语言（"每天 02:00 执行" 替代 "02 时 00 分 执行"）

web/src/components/CronInput/CronInput.tsx

@@ -1,4 +1,4 @@
-import { Button, Input, Space, Switch, Tabs, Typography, Radio, Select } from '@arco-design/web-react'
+import { Button, Divider, Input, Select, Space, Switch, Typography } from '@arco-design/web-react'
 import { useEffect, useMemo, useState } from 'react'
 
 export interface CronInputProps {
@@ -6,17 +6,7 @@ export interface CronInputProps {
   onChange?: (value: string) => void
 }
 
-const DEFAULT_CRON = '* * * * *'
-
-type CronPart = 'minute' | 'hour' | 'day' | 'month' | 'week'
-
-interface CronState {
-  minute: string
-  hour: string
-  day: string
-  month: string
-  week: string
-}
+const DEFAULT_CRON = '0 2 * * *'
 
 // 常用预设
 const PRESETS = [
@@ -27,249 +17,311 @@ const PRESETS = [
   { label: '每周日 03:00', value: '0 3 * * 0' },
   { label: '每月 1 日 02:00', value: '0 2 1 * *' },
   { label: '每 30 分钟', value: '*/30 * * * *' },
-  { label: '每小时', value: '0 * * * *' },
+  { label: '每小时整点', value: '0 * * * *' },
 ]
 
-function parseCron(expr: string): CronState {
-  const parts = (expr || DEFAULT_CRON).trim().split(/\s+/)
-  return {
-    minute: parts[0] || '*',
-    hour: parts[1] || '*',
-    day: parts[2] || '*',
-    month: parts[3] || '*',
-    week: parts[4] || '*',
-  }
-}
+const HOUR_OPTIONS = Array.from({ length: 24 }, (_, i) => ({
+  label: `${String(i).padStart(2, '0')} 时`,
+  value: String(i),
+}))
 
-function stringifyCron(state: CronState): string {
-  return `${state.minute} ${state.hour} ${state.day} ${state.month} ${state.week}`
-}
+const MINUTE_OPTIONS = Array.from({ length: 12 }, (_, i) => ({
+  label: `${String(i * 5).padStart(2, '0')} 分`,
+  value: String(i * 5),
+}))
 
-// 将 cron 表达式转为中文可读描述
+const WEEKDAY_OPTIONS = [
+  { label: '周一', value: '1' },
+  { label: '周二', value: '2' },
+  { label: '周三', value: '3' },
+  { label: '周四', value: '4' },
+  { label: '周五', value: '5' },
+  { label: '周六', value: '6' },
+  { label: '周日', value: '0' },
+]
+
+const DAY_OPTIONS = Array.from({ length: 31 }, (_, i) => ({
+  label: `${i + 1} 日`,
+  value: String(i + 1),
+}))
+
+type ScheduleMode = 'daily' | 'weekly' | 'monthly' | 'interval'
+
+// 将 cron 表达式转为自然语言中文描述
 function describeCron(expr: string): string {
   const parts = expr.trim().split(/\s+/)
   if (parts.length !== 5) return ''
-  const [minute, hour, day, month, week] = parts
+  const [minute, hour, day, _month, week] = parts
 
-  const segments: string[] = []
+  // 每 N 分钟
+  if (minute.includes('/') && hour === '*' && day === '*' && week === '*') {
+    return `每 ${minute.split('/')[1]} 分钟执行一次`
+  }
+  // 每 N 小时
+  if (minute !== '*' && hour.includes('/') && day === '*' && week === '*') {
+    return `每 ${hour.split('/')[1]} 小时执行一次（在第 ${minute} 分）`
+  }
+  // 每小时
+  if (minute !== '*' && hour === '*' && day === '*' && week === '*') {
+    return `每小时的第 ${minute} 分执行`
+  }
 
-  // 月
-  if (month !== '*') segments.push(`${month} 月`)
-  // 日
-  if (day !== '*') segments.push(`${day} 日`)
-  // 周
-  if (week !== '*') {
+  const hh = hour.padStart(2, '0')
+  const mm = minute.padStart(2, '0')
+  const time = `${hh}:${mm}`
+
+  // 每周某天
+  if (day === '*' && week !== '*') {
     const weekNames: Record<string, string> = { '0': '日', '1': '一', '2': '二', '3': '三', '4': '四', '5': '五', '6': '六', '7': '日' }
-    const weekDesc = week.split(',').map((w) => weekNames[w] || w).join('、')
-    segments.push(`星期${weekDesc}`)
+    const days = week.split(',').map((w) => `周${weekNames[w] || w}`).join('、')
+    return `每${days} ${time} 执行`
   }
-  // 小时
-  if (hour.includes('/')) {
-    segments.push(`每 ${hour.split('/')[1]} 小时`)
-  } else if (hour !== '*') {
-    segments.push(`${hour.padStart(2, '0')} 时`)
+  // 每月某日
+  if (day !== '*' && week === '*') {
+    return `每月 ${day} 日 ${time} 执行`
   }
-  // 分钟
-  if (minute.includes('/')) {
-    segments.push(`每 ${minute.split('/')[1]} 分钟`)
-  } else if (minute !== '*') {
-    segments.push(`${minute.padStart(2, '0')} 分`)
-  } else if (hour !== '*' && !hour.includes('/')) {
-    segments.push('00 分')
+  // 每天
+  if (day === '*' && week === '*' && hour !== '*' && !hour.includes('/')) {
+    return `每天 ${time} 执行`
   }
 
-  if (segments.length === 0) return '每分钟执行'
-  return segments.join(' ') + ' 执行'
+  return ''
 }
 
-function generateOptions(min: number, max: number) {
-  return Array.from({ length: max - min + 1 }, (_, i) => ({
-    label: String(i + min),
-    value: String(i + min),
-  }))
-}
-
-const MINUTES_OPTIONS = generateOptions(0, 59)
-const HOURS_OPTIONS = generateOptions(0, 23)
-const DAYS_OPTIONS = generateOptions(1, 31)
-const MONTHS_OPTIONS = generateOptions(1, 12)
-const WEEKS_OPTIONS = [
-  { label: '星期日', value: '0' },
-  { label: '星期一', value: '1' },
-  { label: '星期二', value: '2' },
-  { label: '星期三', value: '3' },
-  { label: '星期四', value: '4' },
-  { label: '星期五', value: '5' },
-  { label: '星期六', value: '6' },
-]
-
 export function CronInput({ value, onChange }: CronInputProps) {
-  const [internalValue, setInternalValue] = useState(value || DEFAULT_CRON)
+  const [cronExpr, setCronExpr] = useState(value || DEFAULT_CRON)
   const [isAdvanced, setIsAdvanced] = useState(false)
-  const [state, setState] = useState<CronState>(parseCron(internalValue))
+  const [showCustom, setShowCustom] = useState(false)
 
-  // Sync prop to internal state
+  // 自定义模式的状态
+  const [mode, setMode] = useState<ScheduleMode>('daily')
+  const [customHour, setCustomHour] = useState('2')
+  const [customMinute, setCustomMinute] = useState('0')
+  const [customWeekdays, setCustomWeekdays] = useState<string[]>(['0'])
+  const [customDay, setCustomDay] = useState('1')
+  const [customInterval, setCustomInterval] = useState('6')
+
+  // 从 prop 同步
   useEffect(() => {
-    if (value !== undefined && value !== internalValue) {
-      setInternalValue(value || DEFAULT_CRON)
-      if (!isAdvanced) {
-        setState(parseCron(value || DEFAULT_CRON))
-      }
+    if (value !== undefined && value !== cronExpr) {
+      setCronExpr(value || DEFAULT_CRON)
     }
-  }, [value, isAdvanced, internalValue])
+  }, [value])
 
-  const description = useMemo(() => describeCron(internalValue), [internalValue])
+  const description = useMemo(() => describeCron(cronExpr), [cronExpr])
+  const isPreset = PRESETS.some((p) => p.value === cronExpr)
 
-  const notifyChange = (nextValue: string) => {
-    setInternalValue(nextValue)
-    if (onChange) {
-      onChange(nextValue)
-    }
+  const emit = (expr: string) => {
+    setCronExpr(expr)
+    onChange?.(expr)
   }
 
-  const handleStateChange = (part: CronPart, val: string) => {
-    const nextState = { ...state, [part]: val }
-    setState(nextState)
-    notifyChange(stringifyCron(nextState))
-  }
-
-  const handlePreset = (cronExpr: string) => {
-    setInternalValue(cronExpr)
-    setState(parseCron(cronExpr))
-    if (onChange) onChange(cronExpr)
-  }
-
-  const renderPartTab = (
-    part: CronPart,
-    title: string,
-    options: { label: string; value: string }[],
-    allowAnyVal = '*',
+  // 从自定义选择器构建 cron
+  const buildCustomCron = (
+    m: ScheduleMode,
+    h: string,
+    min: string,
+    weekdays: string[],
+    day: string,
+    interval: string,
   ) => {
-    const currentVal = state[part]
-    const isAny = currentVal === allowAnyVal || currentVal === '*' || currentVal === '?'
-    const isSpecific = !isAny && !currentVal.includes('/') && !currentVal.includes('-')
+    switch (m) {
+      case 'daily':
+        return `${min} ${h} * * *`
+      case 'weekly':
+        return `${min} ${h} * * ${weekdays.sort().join(',') || '0'}`
+      case 'monthly':
+        return `${min} ${h} ${day} * *`
+      case 'interval':
+        return `0 */${interval} * * *`
+      default:
+        return DEFAULT_CRON
+    }
+  }
 
-    const type = isAny ? 'any' : 'specific'
-    const specificValues = isSpecific ? currentVal.split(',') : []
+  const handleCustomChange = (updates: {
+    mode?: ScheduleMode
+    hour?: string
+    minute?: string
+    weekdays?: string[]
+    day?: string
+    interval?: string
+  }) => {
+    const m = updates.mode ?? mode
+    const h = updates.hour ?? customHour
+    const min = updates.minute ?? customMinute
+    const w = updates.weekdays ?? customWeekdays
+    const d = updates.day ?? customDay
+    const iv = updates.interval ?? customInterval
 
-    return (
-      <div style={{ padding: '16px 0' }}>
-        <Radio.Group
-          direction="vertical"
-          value={type}
-          onChange={(val) => {
-            if (val === 'any') {
-              handleStateChange(part, allowAnyVal)
-            } else {
-              handleStateChange(part, options[0].value)
-            }
-          }}
-        >
-          <Radio value="any">
-            <Typography.Text>通配 ({allowAnyVal}) - 任意{title}</Typography.Text>
-          </Radio>
-          <Radio value="specific">
-            <Typography.Text>指定{title}</Typography.Text>
-          </Radio>
-        </Radio.Group>
+    if (updates.mode !== undefined) setMode(m)
+    if (updates.hour !== undefined) setCustomHour(h)
+    if (updates.minute !== undefined) setCustomMinute(min)
+    if (updates.weekdays !== undefined) setCustomWeekdays(w)
+    if (updates.day !== undefined) setCustomDay(d)
+    if (updates.interval !== undefined) setCustomInterval(iv)
 
-        {type === 'specific' && (
-          <div style={{ paddingLeft: 24, marginTop: 12 }}>
-            <Select
-              mode="multiple"
-              placeholder={`请选择${title}`}
-              value={specificValues}
-              options={options}
-              onChange={(vals: string[]) => {
-                if (vals.length === 0) {
-                  handleStateChange(part, allowAnyVal)
-                } else {
-                  const sorted = [...vals].sort((a, b) => Number(a) - Number(b))
-                  handleStateChange(part, sorted.join(','))
-                }
-              }}
-              style={{ width: '100%', maxWidth: 400 }}
-              allowClear
-            />
-          </div>
-        )}
-      </div>
-    )
+    emit(buildCustomCron(m, h, min, w, d, iv))
   }
 
   return (
-    <div className="cron-input-container">
-      {/* 常用预设 */}
-      <div style={{ marginBottom: 12 }}>
-        <Typography.Text type="secondary" style={{ display: 'block', marginBottom: 8 }}>常用预设</Typography.Text>
-        <Space wrap size="small">
-          {PRESETS.map((preset) => (
-            <Button
-              key={preset.value}
-              size="small"
-              type={internalValue === preset.value ? 'primary' : 'secondary'}
-              onClick={() => handlePreset(preset.value)}
-            >
-              {preset.label}
-            </Button>
-          ))}
-        </Space>
-      </div>
-
-      {/* 表达式 + 可读描述 */}
-      <div style={{ marginBottom: 12, display: 'flex', justifyContent: 'space-between', alignItems: 'center' }}>
-        <Input
-          value={internalValue}
-          onChange={(val) => {
-            setInternalValue(val)
-            if (isAdvanced && onChange) {
-              onChange(val)
-            }
-          }}
-          readOnly={!isAdvanced}
-          style={{ width: 240, fontFamily: 'monospace' }}
-          placeholder="* * * * *"
-        />
-        <Space>
-          <Typography.Text type="secondary">高级模式</Typography.Text>
-          <Switch
-            checked={isAdvanced}
-            onChange={(checked) => {
-              setIsAdvanced(checked)
-              if (!checked) {
-                setState(parseCron(internalValue))
-                notifyChange(stringifyCron(parseCron(internalValue)))
-              }
+    <div>
+      {/* 预设按钮 */}
+      <Space wrap size="small" style={{ marginBottom: 12 }}>
+        {PRESETS.map((preset) => (
+          <Button
+            key={preset.value}
+            size="small"
+            type={cronExpr === preset.value ? 'primary' : 'secondary'}
+            onClick={() => {
+              emit(preset.value)
+              setShowCustom(false)
+              setIsAdvanced(false)
             }}
-          />
-        </Space>
+          >
+            {preset.label}
+          </Button>
+        ))}
+        <Button
+          size="small"
+          type={!isPreset && !isAdvanced ? 'primary' : 'secondary'}
+          onClick={() => {
+            setShowCustom(true)
+            setIsAdvanced(false)
+          }}
+        >
+          自定义...
+        </Button>
+      </Space>
+
+      {/* 中文描述 + cron 表达式 */}
+      <div style={{ display: 'flex', alignItems: 'center', gap: 12, marginBottom: 8 }}>
+        <Input
+          value={cronExpr}
+          readOnly={!isAdvanced}
+          style={{ width: 180, fontFamily: 'monospace', fontSize: 13 }}
+          placeholder="0 2 * * *"
+          onChange={(val) => {
+            if (isAdvanced) emit(val)
+          }}
+        />
+        {description && (
+          <Typography.Text type="secondary">{description}</Typography.Text>
+        )}
+        <div style={{ marginLeft: 'auto' }}>
+          <Space size="mini">
+            <Typography.Text type="secondary" style={{ fontSize: 12 }}>手动输入</Typography.Text>
+            <Switch
+              size="small"
+              checked={isAdvanced}
+              onChange={(checked) => {
+                setIsAdvanced(checked)
+                setShowCustom(false)
+                if (!checked) {
+                  setCronExpr(cronExpr)
+                }
+              }}
+            />
+          </Space>
+        </div>
       </div>
 
-      {/* 中文可读描述 */}
-      {description && (
-        <Typography.Paragraph type="secondary" style={{ marginBottom: 12, marginTop: 0 }}>
-          {description}
-        </Typography.Paragraph>
-      )}
+      {/* 自定义选择器 */}
+      {showCustom && !isAdvanced && (
+        <div style={{ padding: '12px 16px', background: 'var(--color-fill-1)', borderRadius: 6 }}>
+          <Space size="large" style={{ marginBottom: 12 }}>
+            <Button size="small" type={mode === 'daily' ? 'primary' : 'text'} onClick={() => handleCustomChange({ mode: 'daily' })}>
+              每天
+            </Button>
+            <Button size="small" type={mode === 'weekly' ? 'primary' : 'text'} onClick={() => handleCustomChange({ mode: 'weekly' })}>
+              每周
+            </Button>
+            <Button size="small" type={mode === 'monthly' ? 'primary' : 'text'} onClick={() => handleCustomChange({ mode: 'monthly' })}>
+              每月
+            </Button>
+            <Button size="small" type={mode === 'interval' ? 'primary' : 'text'} onClick={() => handleCustomChange({ mode: 'interval' })}>
+              间隔
+            </Button>
+          </Space>
 
-      {!isAdvanced && (
-        <Tabs type="card-gutter" size="small">
-          <Tabs.TabPane key="minute" title="分钟">
-            {renderPartTab('minute', '分钟', MINUTES_OPTIONS, '*')}
-          </Tabs.TabPane>
-          <Tabs.TabPane key="hour" title="小时">
-            {renderPartTab('hour', '小时', HOURS_OPTIONS, '*')}
-          </Tabs.TabPane>
-          <Tabs.TabPane key="day" title="日">
-            {renderPartTab('day', '日', DAYS_OPTIONS, '*')}
-          </Tabs.TabPane>
-          <Tabs.TabPane key="month" title="月">
-            {renderPartTab('month', '月', MONTHS_OPTIONS, '*')}
-          </Tabs.TabPane>
-          <Tabs.TabPane key="week" title="周">
-            {renderPartTab('week', '周', WEEKS_OPTIONS, '*')}
-          </Tabs.TabPane>
-        </Tabs>
+          {mode === 'interval' ? (
+            <Space align="center">
+              <Typography.Text>每</Typography.Text>
+              <Select
+                size="small"
+                value={customInterval}
+                style={{ width: 80 }}
+                options={[
+                  { label: '1', value: '1' },
+                  { label: '2', value: '2' },
+                  { label: '3', value: '3' },
+                  { label: '4', value: '4' },
+                  { label: '6', value: '6' },
+                  { label: '8', value: '8' },
+                  { label: '12', value: '12' },
+                ]}
+                onChange={(val) => handleCustomChange({ interval: val })}
+              />
+              <Typography.Text>小时执行一次</Typography.Text>
+            </Space>
+          ) : (
+            <>
+              {mode === 'weekly' && (
+                <div style={{ marginBottom: 8 }}>
+                  <Space wrap size="mini">
+                    {WEEKDAY_OPTIONS.map((opt) => (
+                      <Button
+                        key={opt.value}
+                        size="mini"
+                        type={customWeekdays.includes(opt.value) ? 'primary' : 'secondary'}
+                        onClick={() => {
+                          const next = customWeekdays.includes(opt.value)
+                            ? customWeekdays.filter((v) => v !== opt.value)
+                            : [...customWeekdays, opt.value]
+                          handleCustomChange({ weekdays: next.length > 0 ? next : [opt.value] })
+                        }}
+                      >
+                        {opt.label}
+                      </Button>
+                    ))}
+                  </Space>
+                </div>
+              )}
+              {mode === 'monthly' && (
+                <div style={{ marginBottom: 8 }}>
+                  <Space align="center">
+                    <Typography.Text>每月</Typography.Text>
+                    <Select
+                      size="small"
+                      value={customDay}
+                      style={{ width: 90 }}
+                      options={DAY_OPTIONS}
+                      onChange={(val) => handleCustomChange({ day: val })}
+                    />
+                  </Space>
+                </div>
+              )}
+              <Space align="center">
+                <Typography.Text>执行时间</Typography.Text>
+                <Select
+                  size="small"
+                  value={customHour}
+                  style={{ width: 90 }}
+                  options={HOUR_OPTIONS}
+                  onChange={(val) => handleCustomChange({ hour: val })}
+                />
+                <Typography.Text>:</Typography.Text>
+                <Select
+                  size="small"
+                  value={customMinute}
+                  style={{ width: 90 }}
+                  options={MINUTE_OPTIONS}
+                  onChange={(val) => handleCustomChange({ minute: val })}
+                />
+              </Space>
+            </>
+          )}
+        </div>
       )}
     </div>
   )