feat(ui): remove in-app entity switcher, entity fixed at login

- MainLayout/ReportCenter: drop switch-entity switcher, keep read-only entity tag
- KPIList/PredictDashboard/GrowthQuality: entity selectors locked to session entity
- api/index.ts: drop switchEntity/myEntities wrappers (endpoint kept for compat)
- sidebar brand now shows logged-in entity name

(cma-remove-inapp-entity-switcher-20260914)

frontend/src/views/ReportCenter.vue

@@ -4,18 +4,8 @@
     <div class="report-header">
       <h3 class="page-title">📊 CMA管理报表</h3>
       <div class="header-right">
-        <!-- 固定企业版（Phase C）：页内切换下拉隐藏，显示当前企业 tag -->
-        <el-tag v-if="isFixedEntity()" size="small" type="primary" effect="plain">{{ currentEntityNameTag }}</el-tag>
-        <el-select
-          v-else
-          v-model="currentEntityId"
-          size="small"
-          style="width:180px"
-          placeholder="选择企业"
-          @change="onEntityChange"
-        >
-          <el-option v-for="e in entities" :key="e.id" :label="e.short_name + ' / ' + e.name" :value="e.id" />
-        </el-select>
+        <!-- 企业只读标识（不可点）：账套由登录窗口选定，页内无切换入口 -->
+        <el-tag size="small" type="primary" effect="plain" class="entity-tag">{{ currentEntityNameTag }}</el-tag>
         <el-date-picker
           v-model="reportPeriod"
           type="month"
@@ -630,18 +620,17 @@
 import { ref, reactive, computed, onMounted, nextTick } from 'vue'
 import { ElMessage } from 'element-plus'
 import axios from 'axios'
-import { isFixedEntity, getFixedEntityId } from '../utils/entity'
+import { getFixedEntityId } from '../utils/entity'
 
 // ── 状态 ──
 const loading = ref(false)
 const activeTab = ref('profit')
 const reportPeriod = ref('2026-06')
 
-// ── 企业选择（新30号准则报表联动）──
-const entities = ref<any[]>([])
+// ── 当前企业（只读）：2026-09-14 需求——登录即定企业，页内无切换入口
 const currentEntityId = ref(Number(localStorage.getItem('cma_entity_id') || 1))
 
-// 固定企业版：页内切换下拉隐藏，右上角显示当前企业 tag
+// 右上角只读企业标识（不可点）
 const currentEntityNameTag = computed(() => {
   const f = getFixedEntityId()
   const n = localStorage.getItem('cma_entity_name')
@@ -649,50 +638,12 @@ const currentEntityNameTag = computed(() => {
 })
 
 function getEntityId() {
-  // 固定企业版恒取构建锁定值（防 localStorage 残留串账套）；切换版取登录/切换写入值
+  // 固定企业版恒取构建锁定值（防 localStorage 残留串账套）；默认版取登录时写入值
   const f = getFixedEntityId()
   if (f !== undefined) return f
   return Number(localStorage.getItem('cma_entity_id') || currentEntityId.value || 1)
 }
 
-async function loadEntities() {
-  try {
-    const r: any = await api.get('/auth/my-entities')
-    entities.value = r.data || r || []
-    const e = entities.value.find((x: any) => x.id === currentEntityId.value)
-    if (e) localStorage.setItem('cma_entity_name', e.short_name || e.name || '')
-  } catch {
-    entities.value = []
-  }
-}
-
-async function onEntityChange(id: number) {
-  // 账套模式：切换走 switch-entity 重新签发token + 整页刷新
-  if (id === Number(localStorage.getItem('cma_entity_id'))) return
-  try {
-    const r: any = await api.post('/auth/switch-entity', { entity_id: id })
-    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 || '')
-    ElMessage.success(`已切换企业：${r.entity_short_name || r.entity_name || id}`)
-    location.reload()
-  } catch (e: any) {
-    ElMessage.error(e?.response?.data?.detail || '切换失败')
-  }
-}
-
-// 跨页面同步：其他页面切换企业时联动刷新（固定企业版忽略——该版本不存在切换）
-if (typeof window !== 'undefined') {
-  window.addEventListener('storage', (ev: StorageEvent) => {
-    if (isFixedEntity()) return
-    if (ev.key === 'cma_entity_id' && ev.newValue) {
-      currentEntityId.value = Number(ev.newValue)
-      loadAll()
-      loadStatutory()
-    }
-  })
-}
-
 // API 配置
 const api = axios.create({ baseURL: '/api/cma', timeout: 30000 })
 api.interceptors.request.use((config: any) => {
@@ -1078,7 +1029,6 @@ function onBudgetSort(sort: any) {
 }
 
 onMounted(() => {
-  if (!isFixedEntity()) loadEntities()
   loadKpiOptions()
   loadAll()
   loadStatutory()