diff --git a/src/api/types.ts b/src/api/types.ts
index a532d99..4bef5e4 100644
--- a/src/api/types.ts
+++ b/src/api/types.ts
@@ -781,6 +781,8 @@ export interface AiConversationSummary {
   completion_tokens?: number | null
   created_at: string
   updated_at: string
+  /** V49 断点续跑:running=进行中 / parked=中断可恢复 / null=无任务(2026-10-06 读侧透出) */
+  loop_state?: 'running' | 'parked' | null
 }
 
 /** G1 目标钉扎:单条目标记录(含状态追踪) */
diff --git a/src/components/ai/TopBar.vue b/src/components/ai/TopBar.vue
index 78a4ba5..2e5ab59 100644
--- a/src/components/ai/TopBar.vue
+++ b/src/components/ai/TopBar.vue
@@ -151,6 +151,30 @@
         <span class="ai-task-progress-fill" :style="{ width: taskProgressPct + '%' }"></span>
       </span>
     </div>
+    <!-- #14 桌面任务卡:后台在途任务(多会话并发生成中,点击切回) -->
+    <div v-if="runningTasks.length || recoverableTasks.length" class="ai-running-tasks-inline">
+      <button type="button" class="ai-running-tasks-badge ai-tool-badge" :class="{ 'is-active': runningTasksExpanded }" @click="togglePanel('running')" :title="$t('aiChat.runningTasks')">
+        <span class="ai-running-tasks-pulse"></span>
+        {{ runningTasks.length }}
+      </button>
+      <Transition name="ai-pop">
+        <div v-if="runningTasksExpanded" class="ai-running-tasks-list">
+          <button v-for="task in runningTasks" :key="task.id" type="button" class="ai-running-task-item" @click="switchToRunning(task.id)">
+            <span class="ai-running-task-dot"></span>
+            <span class="ai-running-task-title">{{ task.title }}</span>
+            <span class="ai-running-task-round">{{ t('aiChat.runningRounds', { n: task.rounds }) }}</span>
+          </button>
+          <template v-if="recoverableTasks.length">
+            <div class="ai-running-tasks-sep"></div>
+            <button v-for="task in recoverableTasks" :key="task.id" type="button" class="ai-running-task-item" @click="switchToRunning(task.id)">
+              <span class="ai-running-task-dot ai-running-task-dot--parked"></span>
+              <span class="ai-running-task-title">{{ task.title }}</span>
+              <span class="ai-running-task-round ai-running-task-round--parked">{{ t('aiChat.recoverableTask') }}</span>
+            </button>
+          </template>
+        </div>
+      </Transition>
+    </div>
     <!-- 目标计数 -->
     <div v-if="goals.length" class="ai-goals-inline">
       <button type="button" class="ai-goals-inline-badge ai-tool-badge" :class="{ 'is-active': goalsExpanded }" @click="togglePanel('goals')" :title="$t('aiChat.viewGoals')">
@@ -258,6 +282,8 @@ import { useI18n } from 'vue-i18n'
 import { useAiStore } from '../../stores/ai'
 import { aiApi } from '../../api/ai'
 import { pendingTaskProgress } from '../../composables/ai/useAiPendingState'
+import { convRounds } from '../../composables/ai/aiShared'
+import { switchConversation } from '../../composables/ai/useAiConversations'
 import type { AiMessage, ModelConfig, GoalEntry } from '../../api/types'
 
 defineProps<{
@@ -414,6 +440,36 @@ const taskProgress = computed(() => {
 const agenticProgressVisible = computed(() =>
   store.state.streaming && store.state.agentRound > 0,
 )
+
+// ── #14 桌面任务卡:后台在途任务列表(多会话并发,切走后可见可切回) ──
+// 数据源=convRounds(轮次追踪,事件写)× store.isGenerating(状态,同源 convStates),
+// 排除当前会话(自身进度已有 agentic 实时进度条,不重复)。响应式:convRounds 是
+// aiShared 模块级 reactive Map,computed 内遍历即建依赖。
+const runningTasksExpanded = ref(false)
+const runningTasks = computed(() => {
+  const items: { id: string; title: string; rounds: number }[] = []
+  for (const [id, rounds] of convRounds) {
+    if (id === store.state.activeConversationId) continue
+    if (!store.isGenerating(id)) continue
+    const conv = store.state.conversations.find(c => c.id === id)
+    items.push({ id, title: conv?.title || t('aiChat.untitledConversation'), rounds })
+  }
+  return items
+})
+// V49 可恢复入口(断点续跑读侧):conversations 中 loop_state='parked' 的会话(重启中断待续),
+// 独立分区展示在任务面板下方,点击切回(继续与否由用户在会话内决定,不做自动续跑)
+const recoverableTasks = computed(() => {
+  return store.state.conversations
+    .filter(c => c.loop_state === 'parked' && c.id !== store.state.activeConversationId)
+    .slice(0, 10)
+    .map(c => ({ id: c.id, title: c.title || t('aiChat.untitledConversation') }))
+})
+async function switchToRunning(id: string) {
+  runningTasksExpanded.value = false
+  if (id !== store.state.activeConversationId) {
+    await switchConversation(id)
+  }
+}
 const taskProgressText = computed(() => {
   const p = taskProgress.value
   if (!p) return ''
@@ -531,11 +587,11 @@ interface ContextInfo {
 }
 const contextExpanded = ref(false)
 
-/** 弹出面板互斥:goals/history/summary/context 四个 badge 面板,点一个收起其他,再点当前切换。 */
-function togglePanel(panel: 'goals' | 'history' | 'summary' | 'context') {
-  const refs = { goals: goalsExpanded, history: historyExpanded, summary: summaryExpanded, context: contextExpanded }
+/** 弹出面板互斥:goals/history/summary/context/running 五个 badge 面板,点一个收起其他,再点当前切换。 */
+function togglePanel(panel: 'goals' | 'history' | 'summary' | 'context' | 'running') {
+  const refs = { goals: goalsExpanded, history: historyExpanded, summary: summaryExpanded, context: contextExpanded, running: runningTasksExpanded }
   const willOpen = !refs[panel].value
-  goalsExpanded.value = historyExpanded.value = summaryExpanded.value = contextExpanded.value = false
+  goalsExpanded.value = historyExpanded.value = summaryExpanded.value = contextExpanded.value = runningTasksExpanded.value = false
   refs[panel].value = willOpen
 }
 
@@ -754,7 +810,7 @@ onBeforeUnmount(() => {
   background: transparent;
   color: var(--df-text-dim);
   cursor: pointer;
-  transition: all 0.15s;
+  transition: background 0.15s, color 0.15s;
 }
 .ai-btn-icon:hover {
   background: var(--df-bg-card);
@@ -954,6 +1010,90 @@ onBeforeUnmount(() => {
   display: inline-flex;
   align-items: center;
 }
+
+/* ── #14 桌面任务卡:后台在途任务徽章+面板 ── */
+.ai-running-tasks-inline {
+  position: relative;
+  display: inline-flex;
+  align-items: center;
+}
+.ai-running-tasks-badge {
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+}
+.ai-running-tasks-pulse {
+  width: 6px;
+  height: 6px;
+  border-radius: 50%;
+  background: var(--df-success, #34c77b);
+  animation: ai-running-pulse 2s ease-in-out infinite;
+}
+@keyframes ai-running-pulse {
+  0%, 100% { opacity: 1; }
+  50% { opacity: 0.35; }
+}
+.ai-running-tasks-list {
+  position: absolute;
+  left: auto; right: 0;
+  top: 100%;
+  z-index: 100;
+  min-width: 260px;
+  max-width: 400px;
+  max-height: 300px;
+  overflow-y: auto;
+  background: var(--df-bg);
+  border: 0.5px solid var(--df-border);
+  border-radius: var(--df-radius-sm);
+  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
+  padding: 4px 0;
+}
+.ai-running-task-item {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  width: 100%;
+  padding: 5px 10px;
+  border: none;
+  background: none;
+  cursor: pointer;
+  text-align: left;
+  font-size: 12px;
+  color: var(--df-text);
+}
+.ai-running-task-item:hover {
+  background: var(--df-hover, rgba(128,128,128,0.08));
+}
+.ai-running-task-dot {
+  flex-shrink: 0;
+  width: 6px;
+  height: 6px;
+  border-radius: 50%;
+  background: var(--df-success, #34c77b);
+}
+.ai-running-task-title {
+  flex: 1;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+.ai-running-task-round {
+  flex-shrink: 0;
+  font-size: 11px;
+  color: var(--df-text-secondary, #888);
+}
+/* V49 可恢复分区:琥珀点+「可恢复」徽标,与进行中(绿)区分 */
+.ai-running-tasks-sep {
+  height: 1px;
+  margin: 4px 8px;
+  background: var(--df-border);
+}
+.ai-running-task-dot--parked {
+  background: var(--df-warning, #e6a23c);
+}
+.ai-running-task-round--parked {
+  color: var(--df-warning, #e6a23c);
+}
 .ai-history-inline-list {
   position: absolute;
   left: auto; right: 0;
diff --git a/src/composables/ai/aiShared.ts b/src/composables/ai/aiShared.ts
index d578cec..569820c 100644
--- a/src/composables/ai/aiShared.ts
+++ b/src/composables/ai/aiShared.ts
@@ -208,6 +208,26 @@ export function clearAllApprovalTimers(): void {
   _approvalTimers.clear()
 }
 
+// ── #14 任务式委托:per-conv 轮次追踪 convRounds(#14 桌面任务卡数据源) ──
+//
+// 语义:后台在途会话的 agentic 轮次(AiAgentRound 事件写入口),桌面任务卡显示
+// 「进行中 N 轮」。模块级 reactive Map(对齐 convStates 模式),conv 终态(AiCompleted/
+// AiError)时清除——任务卡消费方据「isGenerating && 有轮次记录」渲染在途项。
+export const convRounds = reactive(new Map<string, number>())
+
+/** 写入 conv 轮次(AiAgentRound case 唯一写入口,取 max 防事件乱序回退) */
+export function setConvRound(convId: string | null | undefined, round: number): void {
+  if (!convId) return
+  const cur = convRounds.get(convId) ?? 0
+  if (round > cur) convRounds.set(convId, round)
+}
+
+/** 清除 conv 轮次(终态收敛:与 setConvState idle 删除同语义) */
+export function clearConvRound(convId: string | null | undefined): void {
+  if (!convId) return
+  convRounds.delete(convId)
+}
+
 // ── L2 统一状态机 convStates(下沉自 useAiEvents,批4 双轨收口) ──
 //
 // 下沉原因:批4 退役 generatingConvs(bool 轨)后,stores/ai.ts(isGenerating)/
diff --git a/src/composables/ai/useAiEvents.ts b/src/composables/ai/useAiEvents.ts
index 0da107d..cf7dc83 100644
--- a/src/composables/ai/useAiEvents.ts
+++ b/src/composables/ai/useAiEvents.ts
@@ -1,4 +1,4 @@
-//! AI 事件监听与分发(分派器)— startListener / stopListener / handleEvent
+//! AI 事件监听与分发(分派器)— startListener(租约)/ ensureListenerStarted(幂等确保)/ handleEvent
 //!
 //! 拆分(批次 A-B1):14 个事件 case 按域拆到 3 个叶子 handler:
 //!   - useAiStreamingEvents.handleStreamingEvent(流式)
@@ -16,7 +16,7 @@ import { t } from '@/i18n/i18n-helpers'
 import { aiApi } from '@/api'
 import { useAppSettingsStore } from '@/stores/appSettings'
 import { state } from '@/stores/ai'
-import { nextMsgId, setConvState, convStates, switchingConvs, getConvStreamState, setConvCurrentText, setConvStreaming, clearConvStreamState, clearAllApprovalTimers, clearAllToolSlowTimers, flushCurrentText, friendlyError, notifyConversationChanged, clearLastDelta, discardConvPendingApprovals, addConvAgentFinished, clearConvAgentFinished, type AgentFinishedStatus } from './aiShared'
+import { nextMsgId, setConvState, convStates, switchingConvs, getConvStreamState, setConvCurrentText, setConvStreaming, clearConvStreamState, clearAllApprovalTimers, clearAllToolSlowTimers, flushCurrentText, friendlyError, notifyConversationChanged, clearLastDelta, discardConvPendingApprovals, addConvAgentFinished, clearConvAgentFinished, setConvRound, clearConvRound, type AgentFinishedStatus } from './aiShared'
 import { resetStreamWatchdog, clearAllStreamWatchdogs, clearResumeAttempts } from './useAiStream'
 import { setStreaming } from './streamingGuard'
 import { scheduleConversationsRefresh, activeConvKvKey } from './useAiConversations'
@@ -40,6 +40,9 @@ let _unlistenApprovalClear: (() => void) | null = null
 // startListener 并发去重:防 onMounted 与 sendMessage 首发竞态下重复注册 listener
 // (两回调写同一 state.currentText → 流式文字双倍)
 let _startPromise: Promise<void> | null = null
+// 租约计数(所有权模型,2026-10-05 根本修):仅组件挂载级 startListener 借/还,
+// send 等运行时路径走 ensureListenerStarted 不计数——计数只由对称生命周期驱动,不漂移。
+let _leaseCount = 0
 
 const appSettings = useAppSettingsStore()
 
@@ -219,6 +222,8 @@ export function handleEvent(event: AiChatEvent) {
       clearResumeAttempts(convId || undefined)
       // 终态即清进度快照(事件即逝态,会话已终止不留陈旧「进行中」)
       pendingTaskProgress.delete(convId || '')
+      // #14 桌面任务卡:终态即清轮次(任务卡据 convRounds 渲染在途项,终止不留陈旧项)
+      clearConvRound(convId || '')
       // FE1:后台会话终止只刷新列表(防抖调度,避免与 AiCompleted 收尾的 notify 双拉)。
       scheduleConversationsRefresh()
       // 后台会话终止也触发队列续发/清队(完成续发;错误清该会话队列)
@@ -238,6 +243,10 @@ export function handleEvent(event: AiChatEvent) {
       // 切换完成后由渲染层续显,避免切换窗口丢可见内容
       setConvStreaming(convId, true)
       setConvCurrentText(convId, (getConvStreamState(convId)?.currentText ?? '') + (event.delta ?? ''))
+    } else if (event.type === 'AiAgentRound' && convId && event.round > 0) {
+      // #14 桌面任务卡:后台会话轮次追踪(isCurrent=false 原本直接丢弃本事件,
+      // 任务卡需要后台轮次显示「进行中 N 轮」;取 max 防事件乱序回退)
+      setConvRound(convId, event.round)
     }
     return
   }
@@ -260,8 +269,30 @@ export function handleEvent(event: AiChatEvent) {
   void handleLifecycleEvent(event)
 }
 
-/** 启动事件监听(幂等 + 并发去重,onMounted 与 sendMessage 首发竞态不会重复注册) */
-export async function startListener() {
+/** 启动事件监听(幂等确保注册,无所有权——send 等运行时路径调用,不计入租约)。
+ *  所有权模型(2026-10-05 根本修):
+ *  - ensureListenerStarted:仅保证 listener 存在,谁都可调、任意次,不持租约;
+ *  - startListener:组件挂载用,返回 release 租约句柄,unmount 时调用归还;
+ *    最后一份租约归还才真拆 listener + 清全局计时器。
+ *  两者分离根治「send 裸调 start 无配对 stop → 裸计数只涨不跌 → 永不真拆」的结构性漂移:
+ *  计数只由组件挂载/卸载这一对对称生命周期驱动,不变量可静态审计。 */
+export async function startListener(): Promise<() => void> {
+  await ensureListenerStarted()
+  _leaseCount++
+  let released = false
+  return () => {
+    if (released) {
+      // 双重归还是调用方 bug(组件卸载钩子重复执行等),dev 下即刻暴露防静默漂移
+      if (import.meta.env.DEV) console.error('[useAiEvents] listener 租约重复归还(调用方 bug)')
+      return
+    }
+    released = true
+    releaseLease()
+  }
+}
+
+/** 幂等确保 listener 已注册(并发去重;不持租约,不触发拆卸)。 */
+export async function ensureListenerStarted(): Promise<void> {
   if (_unlistenAiEvent && _unlistenConvChanged && _unlistenApprovalClear) {
     return
   }
@@ -304,8 +335,14 @@ export async function startListener() {
   }
 }
 
-/** 停止事件监听(卸载时调用,释放后端 listener + 清看门狗/计时器,防回调改已卸载组件 state) */
-export function stopListener() {
+/** 归还一份租约:计数归零才真拆(多实例挂载时先退出的实例不误拆他人在用的 listener)。 */
+function releaseLease() {
+  if (_leaseCount === 0) {
+    if (import.meta.env.DEV) console.error('[useAiEvents] 租约下溢(归还多于借出,调用方 bug)')
+    return
+  }
+  _leaseCount--
+  if (_leaseCount > 0) return
   _unlistenAiEvent?.()
   _unlistenConvChanged?.()
   _unlistenApprovalClear?.()
@@ -323,7 +360,7 @@ export function stopListener() {
 export function useAiEvents() {
   return {
     startListener,
-    stopListener,
+    ensureListenerStarted,
     handleEvent,
     flushCurrentText,
     friendlyError,
diff --git a/src/composables/ai/useAiLifecycleEvents.ts b/src/composables/ai/useAiLifecycleEvents.ts
index 627cce0..5e7366f 100644
--- a/src/composables/ai/useAiLifecycleEvents.ts
+++ b/src/composables/ai/useAiLifecycleEvents.ts
@@ -9,7 +9,7 @@ import { emit } from '@tauri-apps/api/event'
 import { useAppSettingsStore } from '@/stores/appSettings'
 import { state } from '@/stores/ai'
 import { t } from '@/i18n/i18n-helpers'
-import { nextMsgId, convStates, clearApprovalTimer, flushCurrentText, clearAllToolSlowTimers, friendlyError, notifyConversationChanged, clearLastDelta, discardConvPendingApprovals, notifyQueueCleared } from './aiShared'
+import { nextMsgId, convStates, clearApprovalTimer, flushCurrentText, clearAllToolSlowTimers, friendlyError, notifyConversationChanged, clearLastDelta, discardConvPendingApprovals, notifyQueueCleared, clearConvRound } from './aiShared'
 import { clearTextIdleTimer, pendingMaxRounds, pendingHelp, pendingDirAuths, pendingTaskParked, pendingTaskProgress } from './useAiPendingState'
 import { clearStreamWatchdog, clearResumeAttempts } from './useAiStream'
 import { setStreaming } from './streamingGuard'
@@ -74,6 +74,8 @@ function cleanupTerminatedConversation(convId: string, reason: 'AiCompleted' | '
   }
   setStreaming(false, { convId: convId || null, reason })
   state.agentRound = 0 // 结束/中断/求助,复位轮次(隐藏进度条)
+  // #14 桌面任务卡:终态即清 per-conv 轮次(前台会话终态收敛,与后台分支 clearConvRound 对齐)
+  clearConvRound(convId)
   // convStates 收敛:AiError 保留 error 项(停止按钮显「重试」态),其余删项回 idle
   if (reason === 'AiError') {
     if (convId) convStates.set(convId, 'error')
diff --git a/src/composables/ai/useAiSend.ts b/src/composables/ai/useAiSend.ts
index e524ca3..4de50ca 100644
--- a/src/composables/ai/useAiSend.ts
+++ b/src/composables/ai/useAiSend.ts
@@ -23,7 +23,7 @@ import type { ContentPart, AiMessage, MentionSpan, MessageId } from '@/api/types
 import { t } from '@/i18n/i18n-helpers'
 import { resetStreamWatchdog, clearStreamWatchdog, clearResumeAttempts } from './useAiStream'
 import { setStreaming } from './streamingGuard'
-import { startListener } from './useAiEvents'
+import { ensureListenerStarted } from './useAiEvents'
 import { nextMsgId, startApprovalTimer, clearApprovalTimer, clearAllApprovalTimers, resolveAiLang, convStates, setConvCurrentText, setConvStreaming, flushCurrentText, notifyQueueCleared, classifySendError, type SendErrorKind } from './aiShared'
 
 /// UX-P2-A5:drainQueue 失败气泡的错误分类文案映射(分类逻辑 aiShared.classifySendError,
@@ -117,7 +117,7 @@ async function doSend(text: string, skill?: string, force = false, parts?: Conte
     setConvCurrentText(targetConvId, '')
   }
 
-  await startListener()
+  await ensureListenerStarted()
   const lang = resolveAiLang()
   try {
     // force=true 走 force_send IPC(复位残留 generating),否则走正常 send
@@ -183,7 +183,7 @@ async function regenerate() {
   // 会话态走 per-conv 键(与 doSend 一致),不再落 legacy 单 timer fallback
   resetStreamWatchdog(regenConvId || undefined)
 
-  await startListener()
+  await ensureListenerStarted()
   const lang = resolveAiLang()
   const convId = state.activeConversationId
   if (!convId) {
@@ -259,7 +259,7 @@ async function editMessage(newMessage: string) {
   // 会话态走 per-conv 键(与 doSend 一致),不再落 legacy 单 timer fallback
   resetStreamWatchdog(editConvId || undefined)
 
-  await startListener()
+  await ensureListenerStarted()
   const lang = resolveAiLang()
   const convId = state.activeConversationId
   if (!convId) {
diff --git a/src/composables/ai/useAiStreamingEvents.ts b/src/composables/ai/useAiStreamingEvents.ts
index df564b7..01beff5 100644
--- a/src/composables/ai/useAiStreamingEvents.ts
+++ b/src/composables/ai/useAiStreamingEvents.ts
@@ -10,7 +10,7 @@ import { emit } from '@tauri-apps/api/event'
 import { useAppSettingsStore } from '@/stores/appSettings'
 import { state } from '@/stores/ai'
 import { t } from '@/i18n/i18n-helpers'
-import { nextMsgId, findToolCall, startApprovalTimer, clearToolSlowTimer, getLastDelta, setLastDelta, flushCurrentText, addPendingApproval } from './aiShared'
+import { nextMsgId, findToolCall, startApprovalTimer, clearToolSlowTimer, getLastDelta, setLastDelta, flushCurrentText, addPendingApproval, setConvRound } from './aiShared'
 import { resetTextIdleTimer, clearTextIdleTimer, pendingDirAuths, pushPendingDirAuth } from './useAiPendingState'
 import { clearStreamWatchdog } from './useAiStream'
 import type { AiChatEvent, AiMessage, MessageId } from '@/api/types'
@@ -57,6 +57,10 @@ export function handleStreamingEvent(event: AiChatEvent): boolean {
       })
       // round>0 才更新进度条(round=0 是审批通过后「隔开新一轮」的占位,实际轮次未推进,防闪烁)
       if (event.round > 0) state.agentRound = event.round
+      // #14 桌面任务卡:per-conv 轮次追踪,前台会话在此写(取 max 防事件乱序回退);
+      // 后台会话在 useAiEvents 非 current 分支的 return 前补写(彼处 AiAgentRound
+      // 原本直接穿透丢弃,任务卡需要后台轮次才能显示「进行中 N 轮」)
+      if (event.round > 0) setConvRound(event.conversation_id || state.activeConversationId, event.round)
       return true
     }
 
diff --git a/src/composables/ai/useAiWindow.ts b/src/composables/ai/useAiWindow.ts
index 1bc64ed..90eb464 100644
--- a/src/composables/ai/useAiWindow.ts
+++ b/src/composables/ai/useAiWindow.ts
@@ -17,7 +17,7 @@ import { nextMsgId, getConvState, convStates } from './aiShared'
 import type { MessageId } from '@/api/types'
 import { setStreaming } from './streamingGuard'
 import { persistUiState } from './useAiPanel'
-import { stopListener } from './useAiEvents'
+
 
 // ── 主窗口事件跟随 unlistener ──
 let _unlistenMove: (() => void) | null = null
@@ -200,19 +200,19 @@ async function detachPanel(convId?: string) {
     stopFollowMain()
   })
   state.detached = true
-  // 时序加固:detached 置 true 后立即停主窗口 listener,不依赖 v-if → AiChat onBeforeUnmount 的
-  // 异步传播。消除 detached=true 到 AiChat 实际卸载的窗口期(reattach 重叠期/HMR/极速 mount-unmount
-  // 竞态下,onBeforeUnmount 可能延迟,旧 listener 残留会与分离窗口新 listener 并存竞态)。
-  // stopListener 同步释放后端 listener + 清看门狗,分离窗口 resumeInDetached 起自己的 startListener。
+  // 时序注(2026-10-05 租约模型):原此处同步调 stopListener() 提前拆主窗 listener,消除
+  // detached=true 到 AiChat 实际卸载的窗口期竞态——但同步拆全局单例正是双实例互踩根源,
+  // 租约模型下删除:主窗 v-if 立即失效 → onBeforeUnmount 归还租约(最后一份才真拆)。
+  // 竞态窗口期(毫秒级)旧 listener 多活无害:事件按 conversation_id 路由,分离窗口独立注册
+  // (BUG-260624-02 已实证审批事件无缺口),主窗残听仅多收一次同事件,无串台。
   //
   // BUG-260624-02 核验结论(2026-08-15):分离窗口事件监听独立存在,审批事件无缺口。
   // 链路:本窗口 url '#/ai-detached' → AiDetached.vue 挂 AiChat(detached) → AiChat onMounted
   // 调 store.startListener()(独立 JS context 各自注册);后端 ai-chat-event 为 app 级广播
   // (emit 到全部 webview),故审批类事件(工具 pending/审批结果)分离窗口自身可收。
   // 前端派生的 'ai-pending-arrived'(useAiStreamingEvents/useAiToolEvents emit)亦为全局广播,
-  // 分离窗口 ToolCardList 的 listener 同样收到。主窗口 listener 在此 stopListener 释清,
+  // 分离窗口 ToolCardList 的 listener 同样收到。主窗 listener 由租约归还(见上方时序注)释清,
   // 不与分离窗口并存竞态。审批超时计时器(aiShared)同样随 listener 在接管窗口内重建。
-  stopListener()
 }
 
 /** 关闭分离窗口并回到内嵌面板(主窗口侧调用)。
@@ -234,9 +234,9 @@ async function reattachPanel() {
   persistUiState()
   // V11c: 清分离窗活跃会话 KV(分离窗已全关,残留无意义;下次 detachPanel 会重新种子)
   void useAppSettingsStore().remove('df-ai-active-conv-detached')
-  // 时序加固:reattach 关闭分离窗口后,显式停分离窗口残留 listener(分离窗口 close 异步,
-  // onBeforeUnmount stopListener 可能延迟),防主面板重新挂载 startListener 时与旧 listener 重叠竞态。
-  stopListener()
+  // 时序注(租约模型):原此处显式 stopListener 防「分离窗旧 listener 与主面板重挂载重叠」——
+  // 但分离窗 listener 活在分离窗自己的 JS context,主窗此处拆的只是本 context 已归还空的
+  // listener(跨 webview 隔离,原调用实为 no-op 式心理安慰)。租约归还链已完整覆盖,删除。
   // 清所有 per-conv 快照(分离窗口已全关,快照无消费方)
   cleanupAllDetachedSnapshots()
 }
@@ -348,9 +348,8 @@ async function resumeInDetached(convId: string | null) {
 async function closeDetachedWindow() {
   state.docked = false
   stopFollowMain()
-  // 时序加固:关闭分离窗口前先停 listener,防 close 异步传播期间 onBeforeUnmount 延迟、
-  // 主面板重挂载 startListener 与旧分离窗口 listener 短暂并存(极速 mount-unmount/HMR 竞态)。
-  stopListener()
+  // 时序注(租约模型):原此处关闭前先 stopListener 防竞态——同上,租约归还链
+  // (本窗口 AiChat onBeforeUnmount)已完整覆盖,强拆会使租约计数与实际状态失配,删除。
   const { getCurrentWebviewWindow } = await import('@tauri-apps/api/webviewWindow')
   const currentWin = getCurrentWebviewWindow()
   const lbl = currentWin.label
diff --git a/src/i18n/en/aiChat.ts b/src/i18n/en/aiChat.ts
index 75ed977..ac029d4 100644
--- a/src/i18n/en/aiChat.ts
+++ b/src/i18n/en/aiChat.ts
@@ -43,6 +43,7 @@ export default {
     restoreSidebar: 'Restore sidebar',
     sidebarResizeHint: 'Drag to resize sidebar',
     detachWindow: 'Detach window',
+    reattachToMain: 'Reattach to main panel',
     closePanel: 'Close panel',
     dockRight: 'Dock to main window right',
     undock: 'Undock',
@@ -255,6 +256,8 @@ export default {
     autoCompressed: 'Context auto-compressed (earlier messages folded into summary)',
     compressError: 'Compression failed: {msg}',
     clearError: 'Clear failed: {msg}',
+    initError: 'AI panel init failed: {msg} (reopen panel to retry)',
+    initDegraded: 'List load failed, continuing in degraded mode: {msg}',
     // Separator expand / collapse
     expand: 'Expand',
     collapse: 'Collapse',
@@ -263,6 +266,10 @@ export default {
 
     // ── TopBar bottom context badges (tooltip + L3 full context popover labels) ──
     viewGoals: 'View goals',
+    runningTasks: 'Running background tasks',
+    runningRounds: '{n} rounds running',
+    untitledConversation: 'Untitled conversation',
+    recoverableTask: 'Interrupted · recoverable',
     viewHistory: 'View history messages',
     viewSummary: 'View context summary',
     viewContext: 'View AI context',
diff --git a/src/i18n/zh-CN/aiChat.ts b/src/i18n/zh-CN/aiChat.ts
index 6027f93..d04847e 100644
--- a/src/i18n/zh-CN/aiChat.ts
+++ b/src/i18n/zh-CN/aiChat.ts
@@ -43,6 +43,7 @@ export default {
     restoreSidebar: '还原侧栏',
     sidebarResizeHint: '拖拽调整侧栏宽度',
     detachWindow: '分离窗口',
+    reattachToMain: '收回主面板',
     closePanel: '关闭面板',
     dockRight: '吸附到主窗口右侧',
     undock: '取消吸附',
@@ -256,6 +257,8 @@ export default {
     autoCompressed: '上下文已自动压缩(较早消息已折叠为摘要)',
     compressError: '压缩失败:{msg}',
     clearError: '清空失败:{msg}',
+    initError: 'AI 面板初始化失败:{msg}(重开面板可重试)',
+    initDegraded: '列表加载失败,面板降级继续:{msg}',
     // 折叠条展开 / 收起
     expand: '展开',
     collapse: '收起',
@@ -264,6 +267,10 @@ export default {
 
     // ── TopBar 底部上下文徽章(tooltip + L3 完整上下文 popover 标签) ──
     viewGoals: '查看目标',
+    runningTasks: '后台进行中任务',
+    runningRounds: '进行中 {n} 轮',
+    untitledConversation: '未命名会话',
+    recoverableTask: '中断·可恢复',
     viewHistory: '查看历史消息',
     viewSummary: '查看上下文摘要',
     viewContext: '查看 AI 上下文',
diff --git a/src/stores/ai.ts b/src/stores/ai.ts
index f524b18..c9ec666 100644
--- a/src/stores/ai.ts
+++ b/src/stores/ai.ts
@@ -7,7 +7,7 @@
 //! - composables 之间通过模块级 import 直接互调(events↔send↔stream 耦合)
 //!
 //! composables 职责:
-//! - useAiEvents    startListener/stopListener/handleEvent/flushCurrentText/findToolCall/friendlyError/notifyConversationChanged
+//! - useAiEvents    startListener/ensureListenerStarted/handleEvent/flushCurrentText/findToolCall/friendlyError/notifyConversationChanged
 //! - useAiStream    onStreamTimeout/resetStreamWatchdog/clearStreamWatchdog + STREAM_TIMEOUT_MS
 //! - useAiSend      sendMessage/approveToolCall/drainQueue/cancelQueued/clearQueue/stopChat
 //! - useAiConversations  loadConversations/newConversation/switchConversation/deleteConversation/renameConversation/archiveConversation/toggleArchivedFold/toggleSidebar