diff --git a/yunkes/src/views/ChatTimeline.vue b/yunkes/src/views/ChatTimeline.vue
index 3d8a303..039ced4 100644
--- a/yunkes/src/views/ChatTimeline.vue
+++ b/yunkes/src/views/ChatTimeline.vue
@@ -108,15 +108,6 @@ const conversationTitle = computed(() => {
   return '聊天记录'
 })
 
-const TWO_WEEKS_MS = 14 * 86_400_000
-
-function defaultRange(): [Date, Date] {
-  const end = new Date()
-  end.setHours(23, 59, 59, 999)
-  const start = new Date(end.getTime() - TWO_WEEKS_MS)
-  start.setHours(0, 0, 0, 0)
-  return [start, end]
-}
 function rangeFromQuery(): [Date, Date] | null {
   const s = route.query.start,
     e = route.query.end
@@ -127,11 +118,12 @@ function rangeFromQuery(): [Date, Date] | null {
   }
   return null
 }
-// 本地日期窗 ref:mount 时取 route.query(stat modal 带窗入口)否则默认近 2 周;
-// 跨会话切换持久(不随路由 param 变化重置),与云客真机一致。
-const dateRange = ref<[Date, Date]>(rangeFromQuery() ?? defaultRange())
-const winStart = computed(() => dateRange.value[0].getTime())
-const winEnd = computed(() => dateRange.value[1].getTime())
+// 本地日期窗 ref:mount 时取 route.query(stat modal 带窗入口)否则**全部时间**——
+// 默认近 2 周会把老对话过滤成空(实测 7-26 的对话在 08-22 打开显示「暂无聊天
+// 记录」,2026-08-22);点「查看聊天记录」就该看到记录,要过滤再手动选时间。
+const dateRange = ref<[Date, Date] | null>(rangeFromQuery())
+const winStart = computed(() => dateRange.value?.[0].getTime())
+const winEnd = computed(() => dateRange.value?.[1].getTime())
 const keyword = ref('')
 
 /** 归属账号昵称(账号表查,回退原始 id)。 */
@@ -159,7 +151,9 @@ const subtitle = computed(() => {
   let s =
     `渠道：${channelLabel(channelTyped.value)} · 归属账号：${ownerLabel}` +
     (total.value > 0 ? ` · 共 ${total.value} 条` : '')
-  s += ` · 时段：${formatTime(winStart.value)} ~ ${formatTime(winEnd.value)}`
+  s += winStart.value && winEnd.value
+    ? ` · 时段：${formatTime(winStart.value)} ~ ${formatTime(winEnd.value)}`
+    : ' · 时段：全部时间'
   return s
 })
 
@@ -357,7 +351,10 @@ onMounted(() => {
               v-model="dateRange"
               type="daterange"
               size="small"
-              :clearable="false"
+              range-separator="至"
+              start-placeholder="开始日期"
+              end-placeholder="结束日期"
+              clearable
               @change="onDateChange"
             />
             <el-input