feat(staff): 微信 5 数字 modal 换本地数据源（metric 过滤 + 合成分页）

Co-Authored-By: Claude <noreply@anthropic.com>

yunkes/src/views/StaffList.vue

@@ -3,7 +3,7 @@ import { computed, onMounted, reactive, ref } from 'vue'
 import { useRouter } from 'vue-router'
 import { ElMessage } from 'element-plus'
 import { getAccounts, getCustomers, getMessages, getStaffChatStats } from '@/api'
-import type { Account, Channel, StaffChatStats } from '@/api/types'
+import type { Account, Channel, Page, StaffChatCustomer, StaffChatStats } from '@/api/types'
 import YkStaffDetailModal from '@/components/YkStaffDetailModal.vue'
 import { useChannelStore } from '@/stores/channel'
 import { channelLabel, formatTime } from '@/utils/format'
@@ -347,11 +347,50 @@ function commModalColsFor(metric: ChatMetric): any[] {
   }
   return cols
 }
+/** 按 metric 过滤客户明细（口径见 spec §4；last_is_send 为 null 时既非最后回复也非未回复）。 */
+function metricFilter(c: StaffChatCustomer, m: ChatMetric): boolean {
+  switch (m) {
+    case 'chat':
+      return true
+    case 'effective':
+      return c.send_count >= 1 && c.receive_count >= 1
+    case 'follow':
+      return c.interaction_days >= 2
+    case 'last_reply':
+      return c.last_is_send === 1
+    case 'no_reply':
+      return c.last_is_send === 0
+  }
+}
+
+/** 微信员工 5 数字 → 明细 modal（数据源：本地 staff-chat-stats，按 metric 过滤 + 合成分页）。 */
 function openWechatCommModal(row: Account, metric: ChatMetric): void {
-  // Task 3 接真实数据 + metric 过滤 + 合成分页。此处先立标题与列骨架。
   detailTitle.value = `${METRIC_TITLES[metric]} · ${row.user_name ?? row.account_id}`
   detailCols.value = commModalColsFor(metric)
-  detailFetcher.value = async () => ({ items: [], total: 0, page: 1, page_size: 10 })
+  detailFetcher.value = async (page: number, page_size: number): Promise<Page<any>> => {
+    // 复用已缓存的 stats；点击早于列表加载完成则按需补拉。
+    let stats = staffStats.value[row.account_id]
+    if (!stats) {
+      try {
+        stats = await getStaffChatStats({
+          owner_account_id: row.account_id,
+          start: statsStart.value,
+          end: statsEnd.value,
+        })
+        staffStats.value[row.account_id] = stats
+      } catch {
+        return { items: [], total: 0, page, page_size }
+      }
+    }
+    const filtered = stats.customers.filter((c) => metricFilter(c, metric))
+    const startIdx = (page - 1) * page_size
+    return {
+      items: filtered.slice(startIdx, startIdx + page_size),
+      total: filtered.length,
+      page,
+      page_size,
+    }
+  }
   detailOpen.value = true
 }