feat: 账套模式全量接入 — 12个API entity_id统一走token解析链 + 前端登录选公司/切换器重签token

- 后端: kpis/bsc_layers/cash/predict/growth_quality/tax_compliance/data 的 entity_id 参数统一改为 Depends(get_entity_id)
- 前端: 拦截器删除自动附加X-Entity-Id/entity_id; 登录页公司选择器(按用户名授权过滤); 切换器改POST /auth/switch-entity重新签发token+整页刷新; ReportCenter同步改造
- 修复前后端不匹配: login-entities路由→/auth/entities; login响应entity_id取user.entity_id

frontend/src/layouts/MainLayout.vue

@@ -48,6 +48,7 @@
 <script setup lang="ts">
 import { ref, computed, onMounted } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
+import { ElMessage } from 'element-plus'
 import api from '../api/index'
 import {
   User, Monitor, Document, TrendCharts, WarningFilled, Connection,
@@ -61,25 +62,35 @@ const router = useRouter()
 const isCollapse = ref(false)
 const mobileMenuOpen = ref(false)
 
-// ── 全局企业切换 ──
+// ── 全局企业切换（账套模式：switch-entity 重新签发token + 整页刷新） ──
 const entities = ref<any[]>([])
 const currentEntityId = ref(Number(localStorage.getItem('cma_entity_id') || 1))
 const currentEntityName = ref(localStorage.getItem('cma_entity_name') || '酣客')
-function onEntityChange(id: number) {
-  currentEntityId.value = id
-  const e = entities.value.find((x: any) => x.id === id)
-  currentEntityName.value = e?.short_name || e?.name || ''
-  localStorage.setItem('cma_entity_id', String(id))
-  localStorage.setItem('cma_entity_name', currentEntityName.value)
-  // 多租户联动：通知后端记录当前tenant（供项目Bot A2A分发）
+async function onEntityChange(id: number) {
+  if (id === Number(localStorage.getItem('cma_entity_id'))) return
   try {
-    api.post('/tenant/switch', { entity_id: id, source: 'cma-frontend' })
-  } catch (_) {}
-  location.reload()
+    const r: any = await api.post('/auth/switch-entity', {
+      entity_id: id,
+      from_entity_id: Number(localStorage.getItem('cma_entity_id') || 1),
+    })
+    localStorage.setItem('cma_token', r.token)
+    localStorage.setItem('cma_entity_id', String(r.entity_id))
+    localStorage.setItem('cma_entity_name', r.entity_short_name || r.entity_name || '')
+    // 多租户联动：通知后端记录当前tenant（供项目Bot A2A分发）
+    try {
+      api.post('/tenant/switch', { entity_id: r.entity_id, source: 'cma-frontend' })
+    } catch (_) {}
+    location.reload()
+  } catch (e: any) {
+    currentEntityId.value = Number(localStorage.getItem('cma_entity_id') || 1)
+    const msg = e?.response?.data?.detail || '切换失败'
+    ElMessage.error(msg)
+  }
 }
 onMounted(async () => {
+  // 账套模式：切换器只显示当前用户被授权的企业
   try {
-    const r: any = await api.get('/entities')
+    const r: any = await api.get('/auth/my-entities')
     entities.value = r.data || r || []
   } catch (_) {}
 })