修复: gen_stream判重+重试分类+状态机最短路径+既有测试修复

src/i18n/en/taskDetail.ts

@@ -41,6 +41,7 @@ export default {
       sendBack: 'Send Back',
       sendBackToReview: 'Send Back to Review',
       block: 'Block',
+      defer: 'Defer',
       cancel: 'Cancel Task',
     },
     advancing: 'Advancing...',

src/i18n/en/tasks.ts

@@ -30,6 +30,7 @@ export default {
       done: 'Done',
       blocked: 'Blocked',
       cancelled: 'Cancelled',
+      deferred: 'Deferred',
     },
 
     // Groups
@@ -53,6 +54,39 @@ export default {
     quickPriority: 'Priority',
     quickDelete: '🗑 Delete',
 
+    // Batch action bar (shared by Tasks / ProjectDetail / TaskDetail subtasks)
+    batch: {
+      selected: '{n} selected',
+      selectAll: 'Select All',
+      clear: 'Clear',
+      advanceTo: 'Move to',
+      noCommonTarget: 'No common target status for selected tasks',
+      cancel: 'Cancel',
+      defer: 'Defer',
+      resume: 'Resume',
+      priority: 'Priority',
+      assignee: 'Assignee',
+      assigneePlaceholder: 'Enter assignee…',
+      delete: 'Delete',
+      confirmDelete: 'Delete {n} tasks? {c} subtasks will be cascaded.',
+      confirmDeletePlain: 'Delete {n} tasks?',
+      deleteResult: 'Deleted {n} tasks ({c} subtasks cascaded)',
+      advanceResult: 'Advanced {n} tasks',
+      updateResult: 'Updated {n} tasks',
+      skipped: '{n} tasks skipped (not allowed)',
+      failed: '{n} failed',
+      selectHint: 'Select tasks for batch actions',
+    },
+
+    // Task kanban board
+    kanban: {
+      toggleList: 'List',
+      toggleKanban: 'Board',
+      emptyColumn: 'No tasks',
+      dragHandle: 'Drag to move',
+      parentNoDrag: 'Parent status is aggregated from subtasks and cannot be dragged',
+    },
+
     // New task modal
     modal: {
       title: 'New Task',
@@ -85,6 +119,7 @@ export default {
       done: '✅ Done',
       blocked: '🚫 Blocked',
       cancelled: '🗑️ Cancelled',
+      deferred: '⏰ Deferred',
     },
     // Error fallbacks (user-visible via state.error)
     err: {

src/i18n/zh-CN/taskDetail.ts

@@ -41,6 +41,7 @@ export default {
       sendBack: '退回修改',              // in_review → in_progress
       sendBackToReview: '退回重审',      // testing → in_review
       block: '阻塞',                     // * → blocked
+      defer: '暂缓',                     // * → deferred
       cancel: '取消任务',                // * → cancelled
     },
     advancing: '推进中...',

src/i18n/zh-CN/tasks.ts

@@ -30,6 +30,7 @@ export default {
       done: '已完成',
       blocked: '已阻塞',
       cancelled: '已取消',
+      deferred: '已暂缓',
     },
 
     // 分组
@@ -53,6 +54,39 @@ export default {
     quickPriority: '优先级',
     quickDelete: '🗑 删除',
 
+    // 批量操作栏(三处任务列表共用:Tasks / ProjectDetail / TaskDetail 子任务)
+    batch: {
+      selected: '已选 {n} 项',
+      selectAll: '全选',
+      clear: '清空',
+      advanceTo: '推进到',
+      noCommonTarget: '所选任务无可统一推进的状态',
+      cancel: '取消',
+      defer: '暂缓',
+      resume: '恢复',
+      priority: '改优先级',
+      assignee: '指派',
+      assigneePlaceholder: '输入负责人…',
+      delete: '删除',
+      confirmDelete: '确定批量删除 {n} 个任务吗？将级联删除 {c} 个子任务。',
+      confirmDeletePlain: '确定批量删除 {n} 个任务吗？',
+      deleteResult: '已删除 {n} 个任务（含级联 {c} 个子任务）',
+      advanceResult: '已推进 {n} 个任务',
+      updateResult: '已更新 {n} 个任务',
+      skipped: '{n} 个任务不允许该操作，已跳过',
+      failed: '失败 {n}',
+      selectHint: '勾选任务后批量操作',
+    },
+
+    // 任务看板
+    kanban: {
+      toggleList: '列表',
+      toggleKanban: '看板',
+      emptyColumn: '暂无任务',
+      dragHandle: '拖动以移动',
+      parentNoDrag: '父任务状态由子任务聚合，不能直接拖动',
+    },
+
     // 新建任务模态
     modal: {
       title: '新建任务',
@@ -85,6 +119,7 @@ export default {
       done: '✅ 已完成',
       blocked: '🚫 已阻塞',
       cancelled: '🗑️ 已取消',
+      deferred: '⏰ 已暂缓',
     },
     // 错误回退(state.error 用户可见)
     err: {