新增: 灵感归档箱与任务归档动线

- ideasStore/taskStore: archiveIdea/archiveTask IPC 封装(本地移除/本地更新,对齐 delete 语义)
- project.ts 组合 store 显式透传 archiveIdea/archiveTask
- Ideas.vue: 筛选栏归档箱 Tab(独立数据源 ideaApi.listArchived,主查询不受扰);archiveCurrentIdea 处理器(归档确认+归档箱内取消归档自动清选中);IdeaDetail 传 in-archive-box prop
- IdeaDetail.vue: inArchiveBox prop + archive emit;操作区归档/取消归档按钮,归档箱模式隐藏删除(防误删归档记忆)
- i18n zh-CN/en ideas 补 filterArchived/archiveBoxEmpty/quickArchive/quickUnarchive/confirmArchive/toast 键(前批遗留)
验收: vue-tsc --noEmit EXIT 0

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',
   },
 }

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',
     },
   },