feat: show intent rate window summaries

components/department-dashboard/PerformanceConversionDetail.test.tsx

@@ -108,6 +108,7 @@ describe('PerformanceConversionDetail', () => {
     expect(screen.getByText(/经营数据更新至/)).toBeInTheDocument()
     expect(screen.getAllByText('12.50%').length).toBeGreaterThan(0)
     expect(screen.getAllByText('¥1,299.50').length).toBeGreaterThan(0)
+    expect(screen.getAllByText('——').length).toBe(3)
     expect(screen.getByRole('img', { name: /支付金额从/ })).toBeInTheDocument()
     expect(screen.getByRole('table')).toHaveTextContent('2026-07-13')
   })
@@ -148,4 +149,25 @@ describe('PerformanceConversionDetail', () => {
     await waitFor(() => expect(screen.getByRole('heading', { name: '亿家达折叠书桌' })).toBeInTheDocument())
     expect(fetchMock).toHaveBeenCalledTimes(2)
   })
+
+  it('shows complete intent-rate averages and change when 15 days are available', async () => {
+    const daily = Array.from({ length: 15 }, (_, index) => ({
+      ...detailData.daily[0],
+      date: `2026-07-${String(index + 1).padStart(2, '0')}`,
+      favorites: index < 8 ? 10 : 20,
+      cartUsers: 10,
+      visitors: 100,
+      paymentConversionRate: 0.03,
+    }))
+    global.fetch = jest.fn().mockResolvedValue({
+      ok: true,
+      json: async () => ({ success: true, data: { ...detailData, daily } }),
+    } as Response)
+
+    render(<PerformanceConversionDetail workflowId="flow-1" productId="1041432226288" returnHref="/workspaces/business/performance-conversion" />)
+
+    expect(await screen.findByText('23.00%')).toBeInTheDocument()
+    expect(screen.getByText('27.67%')).toBeInTheDocument()
+    expect(screen.getByText('20.29%')).toBeInTheDocument()
+  })
 })

components/department-dashboard/PerformanceConversionDetail.tsx

@@ -11,6 +11,7 @@ import {
 import DepartmentShell from './DepartmentShell'
 import {
   PERFORMANCE_CONVERSION_METRICS,
+  buildIntentRateWindowSummary,
   type PerformanceConversionDailyMetric,
   type PerformanceConversionMetricKey,
   type PerformanceConversionTimeseries,
@@ -138,6 +139,35 @@ function MetricSummary({ data }: { data: PerformanceConversionTimeseries }) {
   )
 }
 
+function IntentRateSummary({ daily }: { daily: PerformanceConversionDailyMetric[] }) {
+  const summary = buildIntentRateWindowSummary(daily)
+  const formatWindowValue = (value: number | null) => value === null ? '——' : `${(value * 100).toFixed(2)}%`
+
+  return (
+    <section className="border-t border-slate-200 bg-white" aria-labelledby="intent-rate-summary-title">
+      <header className="px-5 py-4 sm:px-7">
+        <h2 id="intent-rate-summary-title" className="font-bold text-slate-950">流程完结后 7日 / 15日平均值</h2>
+        <p className="mt-1 text-xs text-slate-500">从流程完结日开始计算，窗口内每天数据完整时显示，缺少天数或字段显示“——”</p>
+      </header>
+      <dl className="grid gap-px border-y border-slate-200 bg-slate-200 sm:grid-cols-3">
+        <div className="bg-white px-5 py-4 sm:px-7">
+          <dt className="text-xs font-semibold text-slate-500">完结后7日意向率平均</dt>
+          <dd className="mt-1 text-lg font-bold tabular-nums text-slate-950">{formatWindowValue(summary.sevenDayIntentRate)}</dd>
+        </div>
+        <div className="bg-white px-5 py-4 sm:px-7">
+          <dt className="text-xs font-semibold text-slate-500">完结后15日意向率平均</dt>
+          <dd className="mt-1 text-lg font-bold tabular-nums text-slate-950">{formatWindowValue(summary.fifteenDayIntentRate)}</dd>
+        </div>
+        <div className="bg-white px-5 py-4 sm:px-7">
+          <dt className="text-xs font-semibold text-slate-500">意向率环比（15日 / 7日）</dt>
+          <dd className="mt-1 text-lg font-bold tabular-nums text-slate-950">{formatWindowValue(summary.intentRateChange)}</dd>
+        </div>
+      </dl>
+      <p className="px-5 py-3 text-xs leading-5 text-slate-500 sm:px-7">意向率 = （收藏人数 + 加购人数）÷ 商品访客数 × 100% + 支付转化率</p>
+    </section>
+  )
+}
+
 function DetailContent({ data }: { data: PerformanceConversionTimeseries }) {
   const [metricKey, setMetricKey] = useState<PerformanceConversionMetricKey>('paymentAmount')
   const [detailGroup, setDetailGroup] = useState<'流量' | '兴趣' | '成交'>('流量')
@@ -172,6 +202,7 @@ function DetailContent({ data }: { data: PerformanceConversionTimeseries }) {
       </header>
 
       <MetricSummary data={data} />
+      <IntentRateSummary daily={data.daily} />
 
       {!hasDailyData ? (
         <div className="px-5 py-12 text-center">

components/department-dashboard/performance-conversion.test.ts

@@ -1,6 +1,8 @@
 import {
   BUSINESS_TREND_BRANDS,
   addCalendarMonths,
+  buildIntentRateWindowSummary,
+  calculateIntentRate,
   daysBetweenInclusive,
   extractValidProductIds,
   isValidDateKey,
@@ -35,4 +37,64 @@ describe('performance conversion helpers', () => {
     expect(isValidDateKey('2026-02-29')).toBe(false)
     expect(isValidDateKey('2026-9-17')).toBe(false)
   })
+
+  it('calculates intent rate from daily interest and conversion metrics', () => {
+    expect(calculateIntentRate({ favorites: 10, cartUsers: 5, visitors: 100, paymentConversionRate: 0.03 })).toBe(0.18)
+    expect(calculateIntentRate({ favorites: 10, cartUsers: 5, visitors: 0, paymentConversionRate: 0.03 })).toBeNull()
+    expect(calculateIntentRate({ favorites: 10, cartUsers: null, visitors: 100, paymentConversionRate: 0.03 })).toBeNull()
+  })
+
+  it('calculates complete 7-day and 15-day averages with intent-rate change', () => {
+    const daily = Array.from({ length: 15 }, (_, index) => ({
+      date: `2026-07-${String(index + 1).padStart(2, '0')}`,
+      impressions: 1000,
+      visitors: 100,
+      clickRate: 0.1,
+      favorites: index < 8 ? 10 : 20,
+      cartUsers: 10,
+      paymentConversionRate: 0.03,
+      paymentAmount: 100,
+      roi: 1,
+    }))
+
+    const summary = buildIntentRateWindowSummary(daily)
+    expect(summary.sevenDayIntentRate).toBeCloseTo(0.23, 12)
+    expect(summary.fifteenDayIntentRate).toBeCloseTo(0.27666666666666667, 12)
+    expect(summary.intentRateChange).toBeCloseTo(0.20289855072463767, 12)
+  })
+
+  it('returns unavailable values when a window is incomplete or its 7-day rate is zero', () => {
+    const fiveDays = Array.from({ length: 5 }, (_, index) => ({
+      date: `2026-07-${String(index + 1).padStart(2, '0')}`,
+      impressions: 1000,
+      visitors: 100,
+      clickRate: 0.1,
+      favorites: 10,
+      cartUsers: 10,
+      paymentConversionRate: 0.03,
+      paymentAmount: 100,
+      roi: 1,
+    }))
+    expect(buildIntentRateWindowSummary(fiveDays)).toEqual({
+      sevenDayIntentRate: null,
+      fifteenDayIntentRate: null,
+      intentRateChange: null,
+    })
+
+    const zeroSevenDayRate = Array.from({ length: 15 }, (_, index) => ({
+      date: `2026-07-${String(index + 1).padStart(2, '0')}`,
+      impressions: 1000,
+      visitors: 100,
+      clickRate: 0.1,
+      favorites: index < 7 ? 0 : 10,
+      cartUsers: index < 7 ? 0 : 10,
+      paymentConversionRate: index < 7 ? 0 : 0.03,
+      paymentAmount: 100,
+      roi: 1,
+    }))
+    expect(buildIntentRateWindowSummary(zeroSevenDayRate)).toMatchObject({
+      sevenDayIntentRate: 0,
+      intentRateChange: null,
+    })
+  })
 })

components/department-dashboard/performance-conversion.ts

@@ -66,6 +66,12 @@ export type PerformanceConversionDailyMetric = {
   roi: number | null
 }
 
+export type PerformanceConversionWindowSummary = {
+  sevenDayIntentRate: number | null
+  fifteenDayIntentRate: number | null
+  intentRateChange: number | null
+}
+
 export type PerformanceConversionTimeseries = {
   workflow: PerformanceConversionWorkflowItem
   product: {
@@ -87,6 +93,36 @@ export type PerformanceConversionTimeseries = {
   }
 }
 
+export function calculateIntentRate(day: Pick<PerformanceConversionDailyMetric, 'favorites' | 'cartUsers' | 'visitors' | 'paymentConversionRate'>): number | null {
+  const { favorites, cartUsers, visitors, paymentConversionRate } = day
+  if (favorites === null || cartUsers === null || visitors === null || paymentConversionRate === null
+    || ![favorites, cartUsers, visitors, paymentConversionRate].every((value) => Number.isFinite(value))) {
+    return null
+  }
+  if (visitors <= 0) return null
+  return (favorites + cartUsers) / visitors + paymentConversionRate
+}
+
+function averageIntentRate(daily: PerformanceConversionDailyMetric[], windowSize: number) {
+  const window = daily.slice(0, windowSize)
+  if (window.length !== windowSize) return null
+  const values = window.map(calculateIntentRate)
+  if (values.some((value) => value === null)) return null
+  return values.reduce<number>((total, value) => total + (value ?? 0), 0) / windowSize
+}
+
+export function buildIntentRateWindowSummary(daily: PerformanceConversionDailyMetric[]): PerformanceConversionWindowSummary {
+  const sevenDayIntentRate = averageIntentRate(daily, 7)
+  const fifteenDayIntentRate = averageIntentRate(daily, 15)
+  const intentRateChange = sevenDayIntentRate !== null
+    && sevenDayIntentRate !== 0
+    && fifteenDayIntentRate !== null
+    ? (fifteenDayIntentRate - sevenDayIntentRate) / sevenDayIntentRate
+    : null
+
+  return { sevenDayIntentRate, fifteenDayIntentRate, intentRateChange }
+}
+
 export function extractValidProductIds(...values: unknown[]): string[] {
   const candidates = values.flatMap((value) => String(value || '')
     .split(/[\s,，;；/、|]+/)