diff --git a/src/api/idea.ts b/src/api/idea.ts
index 1e015e2..535412e 100644
--- a/src/api/idea.ts
+++ b/src/api/idea.ts
@@ -49,4 +49,14 @@ export const ideaApi = {
   listEvaluations(ideaId: string): Promise<IdeaEvaluationRecord[]> {
     return invoke('list_idea_evaluations', { ideaId })
   },
+
+  /** 归档/取消归档灵感(归档功能 P1,V47)。返回是否命中(灵感不存在/已软删为 false)。 */
+  archive(id: string, archived: boolean): Promise<boolean> {
+    return invoke('archive_idea', { id, archived })
+  },
+
+  /** 列出归档灵感(archived = 1 且未删,updated_at DESC)。 */
+  listArchived(): Promise<IdeaRecord[]> {
+    return invoke('list_archived_ideas')
+  },
 }
diff --git a/src/api/task.ts b/src/api/task.ts
index d071e64..e3a4787 100644
--- a/src/api/task.ts
+++ b/src/api/task.ts
@@ -59,4 +59,14 @@ export const taskApi = {
   advance(id: string, targetStatus: string): Promise<TaskRecord> {
     return invoke('advance_task', { id, targetStatus })
   },
+
+  /** 归档/取消归档任务(归档功能 P1,V46)。返回是否命中(任务不存在/已软删为 false)。 */
+  archive(id: string, archived: boolean): Promise<boolean> {
+    return invoke('archive_task', { id, archived })
+  },
+
+  /** 列出归档任务(archived = 1 且未删,updated_at DESC)。projectId 可选过滤。 */
+  listArchived(projectId?: string): Promise<TaskRecord[]> {
+    return invoke('list_archived_tasks', { projectId: projectId ?? null })
+  },
 }
diff --git a/src/api/types.ts b/src/api/types.ts
index f6ac207..d5b171d 100644
--- a/src/api/types.ts
+++ b/src/api/types.ts
@@ -37,6 +37,8 @@ export interface IdeaRecord {
   scores: string | null
   /** 关联灵感 id JSON 数组字符串(对齐后端 related_ids Option<String>),null/空串=无关联 */
   related_ids: string | null
+  /** 归档标记(归档功能 P1,V47 列)。归档灵感退出主视图,仅在归档箱可见。 */
+  archived: boolean
   created_at: string
   updated_at: string
 }
@@ -189,6 +191,12 @@ export interface TaskRecord {
    * 老任务无结构化规格时为 undefined。
    */
   content_json?: string
+  /**
+   * 归档标记(归档功能 P1,V46 列)。与 status/queue 正交的纯元数据:
+   * archived=true 的任务退出主视图(后端活跃查询恒过滤),仅在归档视图可见。
+   * 老任务后端 DEFAULT 0 保证该字段始终存在。
+   */
+  archived: boolean
   created_at: string
   updated_at: string
 }
diff --git a/src/components/ideas/IdeaDetail.vue b/src/components/ideas/IdeaDetail.vue
index 36f54b1..ebc0176 100644
--- a/src/components/ideas/IdeaDetail.vue
+++ b/src/components/ideas/IdeaDetail.vue
@@ -286,10 +286,14 @@
       </div>
     </div>
 
-    <!-- 操作(P0-② 立项按钮已上移至标题行,此处仅留删除) -->
+    <!-- 操作(P0-② 立项按钮已上移至标题行) -->
     <div class="detail-section" style="margin-top:8px">
       <div class="action-buttons">
-        <button class="btn btn-ghost" :disabled="deleting" @click="$emit('delete')">
+        <!-- 归档功能 P1:主列表=归档动线;归档箱=取消归档动线(删除隐藏,防误删归档记忆) -->
+        <button class="btn btn-ghost" :disabled="deleting" @click="$emit('archive', !inArchiveBox)">
+          {{ inArchiveBox ? $t('ideas.quickUnarchive') : $t('ideas.quickArchive') }}
+        </button>
+        <button v-if="!inArchiveBox" class="btn btn-ghost" :disabled="deleting" @click="$emit('delete')">
           {{ deleting ? $t('ideas.deleting') : $t('ideas.deleteIdea') }}
         </button>
       </div>
@@ -315,12 +319,15 @@ const props = defineProps<{
   evalError: string
   promoting: boolean
   deleting: boolean
+  /** 归档功能 P1:父视图是否处于归档箱模式(决定操作按钮语义:归档↔取消归档) */
+  inArchiveBox?: boolean
 }>()
 
 const emit = defineEmits<{
   (e: 'evaluate'): void
   (e: 'promote'): void
   (e: 'delete'): void
+  (e: 'archive', archived: boolean): void
   (e: 'status-change', value: IdeaStatus): void
   // 返 Promise<boolean> 让子组件 await 知成功/失败。
   // true=落库成功(关编辑态);false=失败(保持编辑态,toast 由父组件处理)。
diff --git a/src/i18n/en/ideas.ts b/src/i18n/en/ideas.ts
index cbf039e..bc474fe 100644
--- a/src/i18n/en/ideas.ts
+++ b/src/i18n/en/ideas.ts
@@ -28,6 +28,7 @@ export default {
       createFailed: 'Failed to create idea',
       deleteFailed: 'Failed to delete idea',
       relateFailed: 'Failed to update relations',
+      archiveFailed: 'Archive operation failed',
     },
 
     // Action feedback toasts (WK-16/18: success/failure light toast, aligns Knowledge.createdToast)
@@ -147,6 +148,14 @@ export default {
     // ⑥ Status change confirm (terminal promoted/rejected/archived or leaving approved)
     confirmStatus: 'Change idea "{title}" status from {from} to {to}?',
     promoteFailed: 'Promotion failed',
+    // Archive P1: idea archive box
+    filterArchived: '📦 Archive',
+    archiveBoxEmpty: 'No archived ideas',
+    quickArchive: '📦 Archive',
+    quickUnarchive: '📤 Unarchive',
+    confirmArchive: 'Archive idea "{title}"? It will leave the main view; find it in the Archive box.',
+    archivedToast: 'Archived',
+    unarchivedToast: 'Unarchived',
     evalFailed: 'Evaluation failed',
   },
 }
diff --git a/src/i18n/en/tasks.ts b/src/i18n/en/tasks.ts
index 6e07465..ef709d5 100644
--- a/src/i18n/en/tasks.ts
+++ b/src/i18n/en/tasks.ts
@@ -53,6 +53,14 @@ export default {
     quickStatus: 'Status',
     quickPriority: 'Priority',
     quickDelete: '🗑 Delete',
+    // Archive P1: archive moves out of main view, keep searchable; delete moves to trash
+    quickArchive: '📦 Archive',
+    quickUnarchive: '📤 Unarchive',
+    confirmArchive: 'Archive task "{title}"? It will leave the main view; find it in the Archive box.',
+    archivedToast: 'Archived',
+    unarchivedToast: 'Unarchived',
+    archiveBox: '📦 Archive',
+    archiveBoxEmpty: 'No archived tasks',
 
     // Batch action bar (shared by Tasks / ProjectDetail / TaskDetail subtasks)
     batch: {
@@ -129,6 +137,7 @@ export default {
       createFailed: 'Failed to create task',
       deleteFailed: 'Failed to delete task',
       updateFailed: 'Failed to update task',
+      archiveFailed: 'Archive operation failed',
       selectProject: 'Please select a project',
     },
   },
diff --git a/src/i18n/zh-CN/ideas.ts b/src/i18n/zh-CN/ideas.ts
index 6e9ed4e..f90ddea 100644
--- a/src/i18n/zh-CN/ideas.ts
+++ b/src/i18n/zh-CN/ideas.ts
@@ -28,6 +28,7 @@ export default {
       createFailed: '创建灵感失败',
       deleteFailed: '删除灵感失败',
       relateFailed: '更新关联关系失败',
+      archiveFailed: '归档操作失败',
     },
 
     // 操作反馈 toast(WK-16/18:成功/失败轻提示,对齐 Knowledge.createdToast)
@@ -147,6 +148,14 @@ export default {
     // ⑥ 状态切换确认(终态 promoted/rejected/archived 或离开 approved 失去立项入口)
     confirmStatus: '将灵感「{title}」状态从 {from} 改为 {to}?',
     promoteFailed: '立项失败',
+    // 归档功能 P1(灵感归档箱)
+    filterArchived: '📦 归档箱',
+    archiveBoxEmpty: '暂无归档灵感',
+    quickArchive: '📦 归档到归档箱',
+    quickUnarchive: '📤 取消归档',
+    confirmArchive: '归档灵感「{title}」?归档后移出主视图,可在归档箱查看。',
+    archivedToast: '已归档',
+    unarchivedToast: '已取消归档',
     evalFailed: '评估失败',
   },
 }
diff --git a/src/i18n/zh-CN/tasks.ts b/src/i18n/zh-CN/tasks.ts
index d14207a..3432bec 100644
--- a/src/i18n/zh-CN/tasks.ts
+++ b/src/i18n/zh-CN/tasks.ts
@@ -53,6 +53,14 @@ export default {
     quickStatus: '状态',
     quickPriority: '优先级',
     quickDelete: '🗑 删除',
+    // 归档功能 P1(归档=移出主视图保留检索,区别于删除=进回收站)
+    quickArchive: '📦 归档',
+    quickUnarchive: '📤 取消归档',
+    confirmArchive: '归档任务「{title}」?归档后移出主视图,可在归档箱查看。',
+    archivedToast: '已归档',
+    unarchivedToast: '已取消归档',
+    archiveBox: '📦 归档箱',
+    archiveBoxEmpty: '暂无归档任务',
 
     // 批量操作栏(三处任务列表共用:Tasks / ProjectDetail / TaskDetail 子任务)
     batch: {
@@ -129,6 +137,7 @@ export default {
       createFailed: '创建任务失败',
       deleteFailed: '删除任务失败',
       updateFailed: '更新任务失败',
+      archiveFailed: '归档操作失败',
       selectProject: '请选择项目',
     },
   },
diff --git a/src/stores/project.ts b/src/stores/project.ts
index 96c7327..aa2621f 100644
--- a/src/stores/project.ts
+++ b/src/stores/project.ts
@@ -179,6 +179,7 @@ function createStore() {
     createTask: tasksStore.createTask,
     updateTask: tasksStore.updateTask,
     deleteTask: tasksStore.deleteTask,
+    archiveTask: tasksStore.archiveTask,
     // P1-b A0:统计独立通道(Dashboard 卡片 + ActiveProjectsPanel 各项目任务数)
     loadStats,
     // idea actions
@@ -186,6 +187,7 @@ function createStore() {
     createIdea: ideasStore.createIdea,
     updateIdea: ideasStore.updateIdea,
     deleteIdea: ideasStore.deleteIdea,
+    archiveIdea: ideasStore.archiveIdea,
     evaluateIdea: ideasStore.evaluateIdea,
     promoteIdea: ideasStore.promoteIdea,
     relateIdeas: ideasStore.relateIdeas,
diff --git a/src/stores/project/ideas.ts b/src/stores/project/ideas.ts
index fa02439..afb3026 100644
--- a/src/stores/project/ideas.ts
+++ b/src/stores/project/ideas.ts
@@ -70,6 +70,19 @@ export function createIdeasStore() {
     })
   }
 
+  /**
+   * 归档/取消归档灵感(归档功能 P1)。归档=移出主视图(list_by_query 恒带 archived=0),
+   * 本地同步从列表移除(取消归档时调 loadIdeas 重拉)。返回后端命中布尔。
+   */
+  async function archiveIdea(id: string, archived: boolean): Promise<boolean> {
+    const ok = await runWithCatch(state, t('ideas.err.archiveFailed'), async () => {
+      const hit = await ideaApi.archive(id, archived)
+      if (hit && archived) state.ideas = state.ideas.filter(x => x.id !== id)
+      return hit
+    })
+    return ok === true
+  }
+
   return {
     loadIdeas,
     createIdea,
@@ -78,5 +91,6 @@ export function createIdeasStore() {
     evaluateIdea,
     promoteIdea,
     relateIdeas,
+    archiveIdea,
   }
 }
diff --git a/src/stores/project/tasks.ts b/src/stores/project/tasks.ts
index 8183281..3257cd0 100644
--- a/src/stores/project/tasks.ts
+++ b/src/stores/project/tasks.ts
@@ -69,10 +69,24 @@ export function createTasksStore() {
     return ok === true
   }
 
+  /**
+   * 归档/取消归档任务(归档功能 P1)。归档=移出主视图(后端活跃查询恒过滤),
+   * 本地同步从列表移除(取消归档时调 loadTasks 重拉)。返回后端命中布尔。
+   */
+  async function archiveTask(id: string, archived: boolean): Promise<boolean> {
+    const ok = await runWithCatch(state, t('tasks.err.archiveFailed'), async () => {
+      const hit = await taskApi.archive(id, archived)
+      if (hit && archived) state.tasks = state.tasks.filter(x => x.id !== id)
+      return hit
+    })
+    return ok === true
+  }
+
   return {
     loadTasks,
     createTask,
     updateTask,
     deleteTask,
+    archiveTask,
   }
 }
diff --git a/src/views/Ideas.vue b/src/views/Ideas.vue
index 32b740e..b56b71f 100644
--- a/src/views/Ideas.vue
+++ b/src/views/Ideas.vue
@@ -54,7 +54,7 @@
         <div class="idea-list">
           <!-- 三态:加载/空(错误改走顶部 error-banner,WK-7 不整表替换列表) -->
           <div v-if="store.loading" class="empty-state">{{ $t('common.loading') }}</div>
-          <div v-else-if="filteredIdeas.length === 0" class="empty-state">{{ $t('ideas.listEmpty') }}</div>
+          <div v-else-if="filteredIdeas.length === 0" class="empty-state">{{ activeFilter === 'archived' ? $t('ideas.archiveBoxEmpty') : $t('ideas.listEmpty') }}</div>
           <template v-else>
             <div
               v-for="idea in pagedIdeas"
@@ -93,9 +93,11 @@
         :eval-error="evalError"
         :promoting="promoting"
         :deleting="deleting"
+        :in-archive-box="activeFilter === 'archived'"
         @evaluate="evaluateCurrentIdea"
         @promote="promoteToProject"
         @delete="deleteCurrentIdea"
+        @archive="archiveCurrentIdea"
         @status-change="onStatusChange"
         @update-desc="onUpdateDesc"
         @update-related="onUpdateRelated"
@@ -160,7 +162,8 @@ import { useRouter, useRoute } from 'vue-router'
 import { useI18n } from 'vue-i18n'
 import { Message } from '@arco-design/web-vue'
 import { useProjectStore } from '../stores/project'
-import type { IdeaStatus, IdeaQuery } from '../api/types'
+import type { IdeaRecord, IdeaStatus, IdeaQuery } from '../api/types'
+import { ideaApi } from '../api'
 import { formatDate } from '../utils/time'
 import { stripMd } from '../utils/markdown'
 import { scoreTier } from '../utils/ideaEval'
@@ -180,7 +183,7 @@ const store = useProjectStore()
 // 确认弹层状态机抽至 composables/useConfirm(原 4 视图重复:Projects/ProjectDetail/Ideas/Settings)
 const { confirmState, confirmDialog, answerConfirm } = useConfirm()
 
-type FilterKey = 'all' | 'hot' | 'pending' | 'promoted'
+type FilterKey = 'all' | 'hot' | 'pending' | 'promoted' | 'archived'
 
 // ⑤ 列表筛选/排序/分页状态持久化 localStorage(对齐 Tasks.vue:193-201 用 usePersistedRef),
 // key 前缀 'ideas.',刷新页面/重开恢复用户的筛选视图。selectedId 不持久化(随路由恢复)。
@@ -212,6 +215,8 @@ const filters: { key: FilterKey; labelKey: string; icon: string }[] = [
   { key: 'hot', labelKey: 'ideas.filter.hot', icon: '🔥' },
   { key: 'pending', labelKey: 'ideas.filter.pending', icon: '⏳' },
   { key: 'promoted', labelKey: 'ideas.filter.promoted', icon: '🚀' },
+  // 归档功能 P1:归档箱(独立数据源 listArchived,不走主查询)
+  { key: 'archived', labelKey: 'ideas.filterArchived', icon: '📦' },
 ]
 
 // ── 状态映射(单一数据源在 @/constants/project,列表/详情/下拉共用) ──
@@ -237,9 +242,21 @@ function buildIdeaQuery(): IdeaQuery {
   return q
 }
 
+// 归档功能 P1:归档箱独立数据源(切到归档箱 filter 时拉取;其余 filter 保持 null 不请求)
+const archivedIdeas = ref<IdeaRecord[]>([])
+
 // 按当前视图查询加载(登记 setActiveIdeaQuery 供 df-data-changed 联动刷新复用同一筛选,
 // 避免 promote/relate/监听触发无参 loadIdeas 全量冲掉当前筛选视图)
-function loadCurrentView() {
+// 归档箱模式:拉归档数据源,主查询不动。
+async function loadCurrentView() {
+  if (activeFilter.value === 'archived') {
+    try {
+      archivedIdeas.value = await ideaApi.listArchived()
+    } catch (e: any) {
+      Message.error(e?.toString() ?? t('ideas.err.loadFailed'))
+    }
+    return
+  }
   store.setActiveIdeaQuery(buildIdeaQuery())
   return store.loadIdeas(buildIdeaQuery())
 }
@@ -272,6 +289,9 @@ watch(sortMode, () => { page.value = 1; void reloadIdeas(true) })
 watch(searchQuery, () => { page.value = 1; void reloadIdeas(false) })
 
 const filteredIdeas = computed(() => {
+  // 归档箱模式:整列表切归档数据源
+  if (activeFilter.value === 'archived') return archivedIdeas.value
+
   let ideas = store.ideas
 
   // hot(按 score≥80)/pending(多状态 draft+pending_review)保留前端 filter:
@@ -380,6 +400,30 @@ async function deleteCurrentIdea() {
   }
 }
 
+// 归档功能 P1:归档/取消归档当前灵感(归档箱内取消归档后自动切回 all 重载)。
+async function archiveCurrentIdea(archived: boolean) {
+  if (!currentIdea.value || deleting.value) return
+  if (archived && !await confirmDialog(t('ideas.confirmArchive', { title: currentIdea.value.title }))) return
+  deleting.value = true
+  try {
+    const ok = await store.archiveIdea(currentIdea.value.id, archived)
+    if (!ok) { Message.error(t('ideas.err.archiveFailed')); return }
+    Message.success(archived ? t('ideas.archivedToast') : t('ideas.unarchivedToast'))
+    if (activeFilter.value === 'archived') {
+      // 归档箱内:本地移除 + 选中态清理
+      archivedIdeas.value = archivedIdeas.value.filter(i => i.id !== currentIdea.value?.id)
+      if (selectedId.value === currentIdea.value?.id) selectedId.value = null
+    } else {
+      // 主列表归档成功:store 已本地移除,清选中(归档项不再可见)
+      selectedId.value = null
+    }
+  } catch (e: any) {
+    Message.error(e?.toString() ?? t('ideas.err.archiveFailed'))
+  } finally {
+    deleting.value = false
+  }
+}
+
 async function promoteToProject() {
   if (!currentIdea.value || promoting.value) return
   promoting.value = true
diff --git a/src/views/Tasks.vue b/src/views/Tasks.vue
index 388a51a..c987329 100644
--- a/src/views/Tasks.vue
+++ b/src/views/Tasks.vue
@@ -60,6 +60,8 @@
       <div class="filter-group view-toggle">
         <button class="seg-btn" :class="{ 'is-active': viewMode === 'list' }" @click="viewMode = 'list'">{{ $t('tasks.kanban.toggleList') }}</button>
         <button class="seg-btn" :class="{ 'is-active': viewMode === 'kanban' }" @click="viewMode = 'kanban'">{{ $t('tasks.kanban.toggleKanban') }}</button>
+        <!-- 归档箱 P1:开关态独立于 list/kanban,开启后整页只渲染归档任务 -->
+        <button class="seg-btn" :class="{ 'is-active': archiveBoxMode }" @click="toggleArchiveBox">{{ $t('tasks.archiveBox') }}</button>
       </div>
       <!-- 列表模式全选(看板无批量栏,隐藏) -->
       <label v-if="viewMode === 'list'" class="select-all" :title="$t('tasks.batch.selectHint')">
@@ -77,7 +79,8 @@
     <div class="task-groups" v-if="viewMode === 'list'">
       <div v-if="loading" class="empty-state">{{ $t('common.loading') }}</div>
       <div v-else-if="filteredGroups.length === 0" class="empty-state">
-        <div class="empty-icon">📋</div>
+        <div class="empty-icon">{{ archiveBoxMode ? '📦' : '📋' }}</div>
+        <p v-if="archiveBoxMode">{{ $t('tasks.archiveBoxEmpty') }}</p>
         <div>{{ $t('tasks.group.empty') }}</div>
         <button class="btn btn-primary btn-sm" @click="openCreateModal()">{{ $t('tasks.create') }}</button>
       </div>
@@ -258,6 +261,7 @@
                       </button>
                     </div>
                     <div class="quick-menu-divider"></div>
+                    <button class="quick-menu-item" @click="quickArchive(row.task, true)">{{ $t('tasks.quickArchive') }}</button>
                     <button class="quick-menu-item quick-menu-danger" @click="quickDelete(row.task)">{{ $t('tasks.quickDelete') }}</button>
                   </div>
                 </div>
@@ -434,6 +438,10 @@ const activeProject = usePersistedRef('tasks.activeProject', 'all')
 const activeStatuses = usePersistedRef<string[]>('tasks.activeStatuses', [])
 // 列表/看板视图切换(持久化;看板模式隐藏状态多选与排序,列即状态)
 const viewMode = usePersistedRef<'list' | 'kanban'>('tasks.viewMode', 'list')
+// 归档功能 P1:归档箱开关(持久化)。开启后整页只渲染归档任务(独立数据源,不经 buildTaskQuery)。
+const archiveBoxMode = usePersistedRef('tasks.archiveBoxMode', false)
+// 归档箱数据源(仅归档箱模式拉取;列表态保持 null 不请求)
+const archivedTasks = ref<TaskRecord[]>([])
 
 // 状态多选切换:点击「全部」清空数组(空=未筛选=显示全部);
 // 点击具体状态时移除「全部」残留(已有具体筛选则「全部」芯片不应保留激活)。
@@ -547,6 +555,43 @@ async function quickDelete(task: TaskRecord, childCount = 0) {
     showToast(e?.toString() ?? t('tasks.err.deleteFailed'), 'error')
   }
 }
+// 归档功能 P1:快捷归档(archive=true 归档,false=归档箱内取消归档)。
+// 归档后任务退出主视图(后端活跃查询恒过滤),本地从当前数据源移除;归档箱内取消则从归档箱移除并回主列表。
+async function quickArchive(task: TaskRecord, archived: boolean) {
+  quickMenuId.value = null
+  if (archived && !await confirmDialog(t('tasks.confirmArchive', { title: task.title }))) return
+  try {
+    const ok = await store.archiveTask(task.id, archived)
+    if (!ok) { showToast(t('tasks.err.archiveFailed'), 'error'); return }
+    showToast(archived ? t('tasks.archivedToast') : t('tasks.unarchivedToast'))
+    // 归档箱模式:取消归档后从归档箱移除;列表模式无需动 store(store.archiveTask 已移除)
+    if (archiveBoxMode.value) archivedTasks.value = archivedTasks.value.filter(x => x.id !== task.id)
+  } catch (e: any) {
+    showToast(e?.toString() ?? t('tasks.err.archiveFailed'), 'error')
+  }
+}
+
+// 归档箱开关:开启时拉归档数据源;关闭时按当前筛选重拉主列表。
+// 看板模式进入归档箱自动切回列表(归档箱走列表渲染,看板列语义=状态,与归档正交)。
+async function toggleArchiveBox() {
+  archiveBoxMode.value = !archiveBoxMode.value
+  quickMenuId.value = null
+  if (archiveBoxMode.value) {
+    if (viewMode.value === 'kanban') viewMode.value = 'list'
+    loading.value = true
+    try {
+      const pid = activeProject.value === 'all' ? undefined : activeProject.value
+      archivedTasks.value = await taskApi.listArchived(pid)
+    } catch (e: any) {
+      showToast(e?.toString() ?? t('tasks.err.loadFailed'), 'error')
+    } finally {
+      loading.value = false
+    }
+  } else {
+    loading.value = true
+    try { await store.loadTasks(buildTaskQuery()) } finally { loading.value = false }
+  }
+}
 // 点击外部关闭快捷菜单
 function closeQuickMenu() { quickMenuId.value = null }
 function toggleGroup(name: string) {
@@ -631,10 +676,12 @@ interface TaskGroup {
 }
 
 // 树组装 — 顶层 = 无 parent_id 的任务,每个顶层挂 children;父进度前端计算(D6,全量已在前端)。
+// 归档功能 P1:归档箱模式数据源切 archivedTasks(独立拉取,不经 buildTaskQuery)。
+const listSource = computed<TaskRecord[]>(() => (archiveBoxMode.value ? archivedTasks.value : store.tasks))
 const taskRows = computed<TaskRow[]>(() => {
   // 子任务按 parent_id 分组(1 级嵌套)
   const childMap = new Map<string, TaskRecord[]>()
-  for (const t of store.tasks) {
+  for (const t of listSource.value) {
     if (!t.parent_id) continue
     const arr = childMap.get(t.parent_id) ?? []
     arr.push(t)
@@ -648,7 +695,7 @@ const taskRows = computed<TaskRow[]>(() => {
     const bv = (b as any)[sortBy.value] ?? ''
     return String(bv).localeCompare(String(av))
   }
-  const tops = store.tasks.filter(t => !t.parent_id).sort(cmp)
+  const tops = listSource.value.filter(t => !t.parent_id).sort(cmp)
   const rows: TaskRow[] = []
   for (const t of tops) {
     const children = (childMap.get(t.id) ?? []).sort(cmp)