新增: 无人值守P0任务边界全链

- 任务级授权边界判定与审批旁路单点插桩
- boundary_json 随会话落库(V45 可逆迁移)
- 六路非正常终局统一安全停靠与托盘通知
- 每五轮进度事件与会话头部进度条
- 前端边界配置卡侧栏徽标及 UX 校验补齐

src/components/ai/ConversationSidebar.vue

@@ -71,6 +71,10 @@
                 <span v-if="store.isGenerating(conv.id)" class="ai-conv-gen-dot" :title="t('aiChat.generating')"></span>
                 <!-- V1: 待审批徽标(橙点计数,复用既有 aiChat.pendingApprovalCount 文案) -->
                 <span v-if="pendingCountOf(conv.id) > 0" class="ai-conv-approve-badge" :title="t('aiChat.pendingApprovalCount', { n: pendingCountOf(conv.id) })">{{ pendingCountOf(conv.id) }}</span>
+                <!-- 无人值守边界徽标:该会话已授权任务边界(镜像渐进填充);点击随会话切回显 -->
+                <span v-if="hasBoundary(conv.id)" class="ai-conv-boundary-badge" :title="t('ai.taskBoundary.badge')">
+                  <svg width="8" height="8" viewBox="0 0 24 24" fill="currentColor"><path d="M12 2 4 5v6c0 5 3.4 9.7 8 11 4.6-1.3 8-6 8-11V5l-8-3z"/></svg>
+                </span>
               </span>
               <span class="ai-conv-item-time">{{ formatRelative(conv.updated_at) }}</span>
             </div>
@@ -161,6 +165,10 @@
                   <span v-if="store.isGenerating(conv.id)" class="ai-conv-gen-dot" :title="t('aiChat.generating')"></span>
                   <!-- V1: 待审批徽标(橙点计数,复用既有 aiChat.pendingApprovalCount 文案) -->
                   <span v-if="pendingCountOf(conv.id) > 0" class="ai-conv-approve-badge" :title="t('aiChat.pendingApprovalCount', { n: pendingCountOf(conv.id) })">{{ pendingCountOf(conv.id) }}</span>
+                  <!-- 无人值守边界徽标:该会话已授权任务边界(镜像渐进填充);点击随会话切回显 -->
+                  <span v-if="hasBoundary(conv.id)" class="ai-conv-boundary-badge" :title="t('ai.taskBoundary.badge')">
+                    <svg width="8" height="8" viewBox="0 0 24 24" fill="currentColor"><path d="M12 2 4 5v6c0 5 3.4 9.7 8 11 4.6-1.3 8-6 8-11V5l-8-3z"/></svg>
+                  </span>
                 </span>
                 <span class="ai-conv-item-time">{{ formatRelative(conv.updated_at) }}</span>
               </div>
@@ -215,6 +223,10 @@
                   <span v-if="store.isGenerating(conv.id)" class="ai-conv-gen-dot" :title="t('aiChat.generating')"></span>
                   <!-- V1: 待审批徽标(橙点计数,复用既有 aiChat.pendingApprovalCount 文案) -->
                   <span v-if="pendingCountOf(conv.id) > 0" class="ai-conv-approve-badge" :title="t('aiChat.pendingApprovalCount', { n: pendingCountOf(conv.id) })">{{ pendingCountOf(conv.id) }}</span>
+                  <!-- 无人值守边界徽标:该会话已授权任务边界(镜像渐进填充);点击随会话切回显 -->
+                  <span v-if="hasBoundary(conv.id)" class="ai-conv-boundary-badge" :title="t('ai.taskBoundary.badge')">
+                    <svg width="8" height="8" viewBox="0 0 24 24" fill="currentColor"><path d="M12 2 4 5v6c0 5 3.4 9.7 8 11 4.6-1.3 8-6 8-11V5l-8-3z"/></svg>
+                  </span>
                 </span>
                 <span class="ai-conv-item-time">{{ formatRelative(conv.updated_at) }}</span>
               </div>
@@ -279,6 +291,9 @@ import { useI18n } from 'vue-i18n'
 import { useAiStore } from '../../stores/ai'
 // V1 只读消费:跨会话待审批真相源(state.pendingApprovals 仅是活跃会话投影,后台会话挂起不进投影)
 import { convPendingApprovals } from '../../composables/ai/aiShared'
+// 无人值守边界徽标只读消费:getConvBoundary 读镜像(reactive Map,模板内读取可追踪;
+// 镜像由边界配置卡在切会话/写入时渐进填充,无批量 IPC 属契约限制)
+import { getConvBoundary } from '../../composables/ai/useTaskBoundary'
 // UX走查 P2-7 只读订阅:rename/archive/pin 失败通知由 useAiConversations 发布,本组件弹就近 toast
 import { convOpFailNotice } from '../../composables/ai/useAiConversations'
 import { useToast } from '../../composables/useToast'
@@ -508,6 +523,11 @@ function pendingCountOf(convId: string): number {
   return pendingCountByConv.value.get(convId) ?? 0
 }
 
+/** 该会话是否已授权无人值守边界(徽标显隐)。直接读 reactive Map,渲染效应自动追踪增删 */
+function hasBoundary(convId: string): boolean {
+  return getConvBoundary(convId) !== null
+}
+
 // ── 对话分组:今天 / 昨天 / 更早 ──
 const bucketLabels = computed<Record<string, string>>(() => ({
   today: t('aiChat.today'),
@@ -842,6 +862,19 @@ body.ai-sidebar-resizing * {
   text-align: center;
   cursor: help;
 }
+/* 无人值守边界徽标(盾形,accent 色系与「已授权」语义一致;纯标记不计数) */
+.ai-conv-boundary-badge {
+  flex-shrink: 0;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 12px;
+  height: 12px;
+  border-radius: 6px;
+  background: color-mix(in srgb, var(--df-accent) 18%, transparent);
+  color: var(--df-accent);
+  cursor: help;
+}
 .ai-conv-item-actions {
   display: none;
   align-items: center;