feat: KPI细条新增两项完成率 + 侧边菜单加两个占位项

frontend/src/pages/Dashboard/Dashboard.jsx

@@ -7,6 +7,8 @@ import {
   BarChartOutlined,
   PictureOutlined,
   UploadOutlined,
+  TargetOutlined,
+  AimOutlined,
 } from '@ant-design/icons'
 import useAuthStore from '../../stores/authStore'
 import { listEpisodes } from '../../services/episodeService'
@@ -54,6 +56,32 @@ function getShortTitle(title) {
   return title.length > 9 ? title.slice(0, 9) + '...' : title
 }
 
+/**
+ * 计算当年完成率（纯前端，量纲已确认为 0~1 小数直接相除）
+ * - "当年"= 当前自然年（new Date().getFullYear()）
+ * - avg(audience_share) 当年已录期 ÷ base/stretch_target
+ * - 无数据时始终返回 { base: '—', stretch: '—' }
+ * - 完成率可 >100% 正常显示
+ */
+function calcCompletionRate(episodes, targets) {
+  const yearInt = new Date().getFullYear()
+  const yearEpisodes = episodes.filter(e => {
+    const airYear = new Date(e.air_date).getFullYear()
+    return airYear === yearInt && e.audience_share != null
+  })
+  const target = (targets || []).find(t => Number(t.year) === yearInt)
+
+  if (!yearEpisodes.length || !target) return { base: '—', stretch: '—' }
+
+  const avgShare = yearEpisodes.reduce((sum, e) => sum + Number(e.audience_share), 0) / yearEpisodes.length
+  const baseRate = avgShare / Number(target.base_target)
+  const stretchRate = avgShare / Number(target.stretch_target)
+  return {
+    base: (baseRate * 100).toFixed(1) + '%',
+    stretch: (stretchRate * 100).toFixed(1) + '%',
+  }
+}
+
 function Dashboard() {
   const { user } = useAuthStore()
   const [episodes, setEpisodes] = useState([])
@@ -95,7 +123,8 @@ function Dashboard() {
     setCoverModalOpen(false)
   }
 
-  // KPI 数据
+  // KPI 数据（扩为 5 项：原有 3 项 + 年度完成率 2 项）
+  const completion = calcCompletionRate(episodes, targets)
   const kpiData = [
     {
       icon: <EyeOutlined style={{ color: '#6b8e6b', fontSize: 14 }} />,
@@ -115,6 +144,18 @@ function Dashboard() {
       label: '年度目标',
       value: targets.length || '--',
     },
+    {
+      icon: <TargetOutlined style={{ color: '#7b5e9e', fontSize: 14 }} />,
+      bg: '#f3e5f5',
+      label: '基础目标完成率',
+      value: completion.base,
+    },
+    {
+      icon: <AimOutlined style={{ color: '#c0584f', fontSize: 14 }} />,
+      bg: '#fce4ec',
+      label: '摸高目标完成率',
+      value: completion.stretch,
+    },
   ]
 
   return (