feat(ui): converge 6 page-level entity selectors to read-only session tag

- DataQuality / ProductMatrix / AlertList / ActionPlanLibrary /
  views.GrowthQuality / PredictAccuracy: drop entity el-select
  (including the "all entities" option), show read-only session
  entity tag (not clickable), same style as the top bar tag
- drop page-level entity param from those requests; backend resolves
  entity from the session token (assert_entity_scope / get_entity_id)
- utils/entity.ts: add sessionEntityName() (cma_entity_name else id map)
- P3: ReportCenter header emoji removed; components/GrowthQuality
  detail drill-down el-dialog -> MyDialog

(cma-entity-selectors-converge-6pages-20260914)

frontend/src/utils/entity.ts

@@ -23,3 +23,13 @@ export function effectiveEntityId(): number {
   const stored = Number(localStorage.getItem('cma_entity_id'))
   return Number.isNaN(stored) ? 1 : stored
 }
+
+/** 会话企业显示名：优先 localStorage.cma_entity_name（登录时写入），否则按会话 entity_id 映射 */
+export function sessionEntityName(): string {
+  const stored = localStorage.getItem('cma_entity_name')
+  if (stored) return stored
+  const id = effectiveEntityId()
+  if (id === 1) return '酣客'
+  if (id === 2) return '博海'
+  return `企业 #${id}`
+}