diff --git a/yunkes/src/components/staffchat/SessionPane.vue b/yunkes/src/components/staffchat/SessionPane.vue
index 4f4091a..0fb5303 100644
--- a/yunkes/src/components/staffchat/SessionPane.vue
+++ b/yunkes/src/components/staffchat/SessionPane.vue
@@ -29,11 +29,21 @@ const errorMsg = ref<string | null>(null)
 const pinnedOpen = ref(true)
 /** search 模式聚合结果(q 命中的消息按会话去重,取首条作为该会话快照)。 */
 const searchResults = ref<ChatSession[]>([])
+/** 搜索命中总数与截断标记(后端单页上限 100,超出时只聚合已取回条内的会话)。 */
+const searchTotal = ref(0)
+const searchTruncated = ref(false)
+
+/** 清搜索态: 结果与截断提示一起清,不残留上次的统计。 */
+function clearSearch() {
+  searchResults.value = []
+  searchTotal.value = 0
+  searchTruncated.value = false
+}
 
 async function load() {
   loading.value = true
   errorMsg.value = null
-  searchResults.value = []
+  clearSearch()
   try {
     const res = await getSessions({
       owner_account_id: props.ownerId,
@@ -48,16 +58,21 @@ async function load() {
     loading.value = false
   }
 }
-watch(() => [props.ownerId, props.kind, friendTab.value] as const, load, { immediate: true })
+watch(() => [props.ownerId, props.kind] as const, load, { immediate: true })
+/** 好友/已删 tab 只过滤 list 会话列表(is_del);search 模式的消息搜索与 is_del
+    无关——切 tab 不重载、不清关键词/结果(搜索跨 tab 保持有效)。 */
+watch(friendTab, () => {
+  if (mode.value === 'list') load()
+})
 
 /** 切模式清关键词与旧结果,避免 list 过滤词被误当搜索词。 */
 watch(mode, () => {
   keyword.value = ''
-  searchResults.value = []
+  clearSearch()
 })
 /** search 模式清空关键词 → 回到未搜索态(不残留上次聚合结果)。 */
 watch(keyword, (k) => {
-  if (mode.value === 'search' && !k.trim()) searchResults.value = []
+  if (mode.value === 'search' && !k.trim()) clearSearch()
 })
 
 /** 置顶区: 仅 单聊+未删好友+list 模式(后端 pinned 目前只有 filehelper)。 */
@@ -106,7 +121,7 @@ function sessionKey(s: ChatSession): string {
 async function runSearch() {
   const k = keyword.value.trim()
   if (mode.value !== 'search' || !k) {
-    searchResults.value = []
+    clearSearch()
     return
   }
   loading.value = true
@@ -119,10 +134,14 @@ async function runSearch() {
       page: 1,
       page_size: 100,
     })
+    searchTotal.value = res.total
+    searchTruncated.value = res.total > res.items.length
     // 已加载的会话列表提供昵称/头像;未命中(search 只回消息)再以 sender_name/键兜底
     const known = new Map(sessions.value.map(s => [sessionKey(s), s]))
     const seen = new Map<string, ChatSession>()
-    for (const m of res.items) {
+    // 陷阱: 后端 /messages 按 timestamp ASC 排序,page 1 取回的是最旧的 100 条命中。
+    // 倒序遍历(新→旧)+ 首见即取,保证每个会话的快照时间 = 已取回命中里最新的那条。
+    for (const m of [...res.items].reverse()) {
       const key = m.room_id ?? m.talker_id ?? ''
       if (!key || seen.has(key)) continue
       const hit = known.get(key)
@@ -131,7 +150,8 @@ async function runSearch() {
         type: m.room_id ? 'group' : 'friend',
         talker_id: m.room_id ? undefined : m.talker_id ?? undefined,
         room_id: m.room_id ?? undefined,
-        name: hit?.name ?? m.sender_name ?? key,
+        // is_send=true 时 sender_name 是员工自己,不能当卡片标题
+        name: hit?.name ?? (!m.is_send ? m.sender_name : key),
         avatar: hit?.avatar ?? undefined,
         today_count: 0,
         last_chat_time: m.timestamp ?? null,
@@ -142,7 +162,7 @@ async function runSearch() {
     )
   } catch (e) {
     errorMsg.value = (e as Error).message
-    searchResults.value = []
+    clearSearch()
   } finally {
     loading.value = false
   }
@@ -212,6 +232,11 @@ async function runSearch() {
         </template>
       </div>
 
+      <!-- ── 搜索截断提示: 命中超单页上限,聚合只覆盖已取回的最旧 100 条 ── -->
+      <div v-if="mode === 'search' && searchTruncated" class="sc-sessions__hint">
+        共 {{ searchTotal }} 条命中，仅聚合最旧 100 条内的会话
+      </div>
+
       <!-- ── 主列表 ── -->
       <div v-if="!loading && visible.length === 0" class="yk-empty">{{ emptyText }}</div>
       <div
@@ -330,7 +355,7 @@ async function runSearch() {
   font-size: 12px;
   transition: transform 0.25s cubic-bezier(0.22, 0.8, 0.36, 1);
 }
-/* 展开时箭头朝下(未转),折叠时转 180° 朝上 */
+/* 展开时(is-open)转 180° 箭头朝上,折叠时未转朝下 */
 .sc-sessions__fold-icon.is-open {
   transform: rotate(180deg);
 }
@@ -338,6 +363,14 @@ async function runSearch() {
   margin-bottom: 6px;
 }
 
+/* 搜索截断提示(弱化小字,同 __time 的灰) */
+.sc-sessions__hint {
+  padding: 4px 8px 6px;
+  font-size: 11px;
+  line-height: 1.4;
+  color: #8a94a4;
+}
+
 /* 会话卡(置顶/主列表共用) */
 .sc-sessions__item {
   display: flex;
diff --git a/yunkes/src/components/staffchat/StaffChatSide.vue b/yunkes/src/components/staffchat/StaffChatSide.vue
index 941d794..08c82b7 100644
--- a/yunkes/src/components/staffchat/StaffChatSide.vue
+++ b/yunkes/src/components/staffchat/StaffChatSide.vue
@@ -7,6 +7,8 @@ const NAVS = [
 
 /** 员工聊天窗口导航键(与路由 :tab 段同名)。 */
 export type TabKey = (typeof NAVS)[number]['key']
+/** TabKey 的运行时键列表(StaffChat.vue 路由 tab 收窄复用,NAVS 单一事实源)。 */
+export const TAB_KEYS: readonly TabKey[] = NAVS.map(n => n.key)
 </script>
 
 <script setup lang="ts">
diff --git a/yunkes/src/views/StaffChat.vue b/yunkes/src/views/StaffChat.vue
index 14a518d..1299e5a 100644
--- a/yunkes/src/views/StaffChat.vue
+++ b/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)
 }