fix(staffchat): 搜索聚合取最新命中(ASC页1陷阱)+tab切换不清搜索结果+is_send守卫兜底名+截断提示+TAB_KEYS单源

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

yunkes/src/views/StaffChat.vue

@@ -5,7 +5,7 @@ import { computed, ref, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { getAccounts } from '@/api'
 import type { Account } from '@/api/types'
-import StaffChatSide, { type TabKey } from '@/components/staffchat/StaffChatSide.vue'
+import StaffChatSide, { TAB_KEYS, type TabKey } from '@/components/staffchat/StaffChatSide.vue'
 import SessionPane from '@/components/staffchat/SessionPane.vue'
 import ChatMain from '@/components/staffchat/ChatMain.vue'
 import MomentsPane from '@/components/staffchat/MomentsPane.vue'
@@ -15,8 +15,8 @@ import StatsPane from '@/components/staffchat/StatsPane.vue'
 const props = defineProps<{ ownerId: string; tab?: string; talkerId?: string }>()
 const route = useRoute()
 const router = useRouter()
-// TabKey 从 StaffChatSide 导出(单一事实源);VALID 仅做运行时兜底
-const VALID: readonly TabKey[] = ['single', 'group', 'moments', 'contacts', 'stats']
+// TabKey/TAB_KEYS 从 StaffChatSide 导出(NAVS 单一事实源);VALID 仅做运行时兜底
+const VALID: readonly TabKey[] = TAB_KEYS
 function isTabKey(v: string | undefined): v is TabKey {
   return !!v && (VALID as readonly string[]).includes(v)
 }