diff --git a/CHANGELOG.md b/CHANGELOG.md
index d2b2d7e..5f7159d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [1.0.9] - 2025-07-04
+
+### Changed
+- 更新多语言标签
+
+### Added
+- 增加Story删除时选择是否删除子任务的选项
+- 删除Story或Task时同时删除前后的关系线路
+
 ## [1.0.6] - 2025-07-03
 
 ### Changed
diff --git a/demo/App.vue b/demo/App.vue
index 0277485..92d9faf 100644
--- a/demo/App.vue
+++ b/demo/App.vue
@@ -9,9 +9,11 @@ import packageInfo from '../package.json'
 import '../src/styles/theme-variables.css'
 import VersionHistoryDrawer from './VersionHistoryDrawer.vue'
 import { useMessage } from '../src/composables/useMessage'
+import { useI18n } from '../src/composables/useI18n'
 import type { Task } from '../src/models/Task'
 
 const { showMessage } = useMessage()
+const { t, formatTranslation } = useI18n()
 
 const tasks = ref<Task[]>([])
 const milestones = ref<Task[]>([])
@@ -42,7 +44,7 @@ const toolbarConfig = {
 
 // 自定义CSV导出处理器（可选）
 const handleCustomCsvExport = () => {
-  showMessage('自定义CSV导出被调用', 'info', { closable: true })
+  showMessage(t.value.customCsvExportCalled, 'info', { closable: true })
 
   // 这里可以实现自定义的CSV导出逻辑
   // 例如：添加额外的数据处理、格式化、或发送到服务器等
@@ -70,11 +72,17 @@ const handleAddMilestone = () => {
 }
 
 const handleLanguageChange = (lang: 'zh' | 'en') => {
-  showMessage(`语言切换到：${lang}`, 'info', { closable: true })
+  const languageText = lang === 'zh' ? '中文' : 'English'
+  showMessage(formatTranslation('languageSwitchedTo', { language: languageText }), 'info', {
+    closable: true,
+  })
 }
 
 const handleThemeChange = (isDark: boolean) => {
-  showMessage(`主题切换到：${isDark ? '暗黑模式' : '明亮模式'}`, 'info', { closable: true })
+  const themeText = isDark ? t.value.darkModeText : t.value.lightModeText
+  showMessage(formatTranslation('themeSwitchedTo', { theme: themeText }), 'info', {
+    closable: true,
+  })
 }
 
 // 里程碑保存处理器示例
@@ -104,7 +112,7 @@ const handleMilestoneDelete = async (milestoneId: number) => {
   const milestoneIndex = milestones.value.findIndex(m => m.id === milestoneId)
   if (milestoneIndex !== -1) {
     milestones.value.splice(milestoneIndex, 1)
-    showMessage('里程碑删除成功', 'success', { closable: false })
+    showMessage(t.value.milestoneDeleteSuccess, 'success', { closable: false })
 
     // 等待DOM更新完成
     await nextTick()
@@ -146,7 +154,9 @@ const handleTaskUpdate = (updatedTask: Task) => {
 
   const originalTask = findOriginalTask(tasks.value)
   if (!originalTask) {
-    showMessage(`未找到要更新的任务，ID： ${updatedTask.id}`, 'warning', { closable: true })
+    showMessage(formatTranslation('taskNotFound', { id: updatedTask.id }), 'warning', {
+      closable: true,
+    })
     return
   }
 
@@ -203,9 +213,11 @@ const handleTaskUpdate = (updatedTask: Task) => {
       }
 
       if (!addToParentChildren(tasks.value)) {
-        showMessage(`未找到新父任务，ID： ${taskToAdd.parentId}，将作为顶级任务添加`, 'warning', {
-          closable: true,
-        })
+        showMessage(
+          formatTranslation('newParentTaskNotFound', { parentId: taskToAdd.parentId }),
+          'warning',
+          { closable: true },
+        )
         tasks.value.push(taskToAdd)
       }
     } else {
@@ -237,7 +249,9 @@ const handleTaskUpdate = (updatedTask: Task) => {
     }
 
     if (!updateTaskInPlace(tasks.value)) {
-      showMessage(`就地更新失败，未找到任务，ID： ${updatedTask.id}`, 'warning', { closable: true })
+      showMessage(formatTranslation('inPlaceUpdateFailed', { id: updatedTask.id }), 'warning', {
+        closable: true,
+      })
     }
   }
 }
@@ -285,7 +299,6 @@ const handleTaskAdd = (newTask: Task) => {
 
     // 尝试添加到父任务的children中
     if (!addToParentChildren(tasks.value)) {
-      console.warn('未找到父任务，ID：', newTask.parentId, '，将作为顶级任务添加')
       // 如果没找到父任务，作为顶级任务添加
       tasks.value.push({ ...newTask })
     }
@@ -297,13 +310,16 @@ const handleTaskAdd = (newTask: Task) => {
 
 // 任务删除处理器
 const handleTaskDelete = (taskToDelete: Task) => {
+  // 收集要删除的所有任务ID（包括子任务）
+  const deletedTaskIds = collectAllTaskIds(taskToDelete)
+
   // 递归查找和删除任务（支持嵌套结构）
   const deleteTaskFromArray = (taskArray: Task[]): boolean => {
     for (let i = 0; i < taskArray.length; i++) {
       if (taskArray[i].id === taskToDelete.id) {
         // 找到任务，删除它
         taskArray.splice(i, 1)
-        showMessage('已删除任务', 'success', { closable: false })
+        showMessage(t.value.taskDeletedSuccess, 'success', { closable: false })
         return true
       }
 
@@ -317,8 +333,116 @@ const handleTaskDelete = (taskToDelete: Task) => {
     return false
   }
 
-  if (!deleteTaskFromArray(tasks.value)) {
-    showMessage(`未找到要删除的任务，ID： ${taskToDelete.id}`, 'warning', { closable: true })
+  if (deleteTaskFromArray(tasks.value)) {
+    // 删除成功后，清理predecessor依赖关系
+    cleanupPredecessorReferences(deletedTaskIds)
+  } else {
+    showMessage(formatTranslation('taskToDeleteNotFound', { id: taskToDelete.id }), 'warning', {
+      closable: true,
+    })
+  }
+}
+
+// 删除story及其所有子任务
+const handleStoryDeleteWithChildren = (storyToDelete: Task) => {
+  // 收集要删除的所有任务ID（story及其所有子任务）
+  const deletedTaskIds = collectAllTaskIds(storyToDelete)
+
+  // 递归查找和删除story（包含其所有子任务）
+  const deleteStoryFromArray = (taskArray: Task[]): boolean => {
+    for (let i = 0; i < taskArray.length; i++) {
+      if (taskArray[i].id === storyToDelete.id) {
+        // 找到story，直接删除它（包含所有子任务）
+        taskArray.splice(i, 1)
+        showMessage(
+          formatTranslation('storyDeleteAllSuccess', { name: storyToDelete.name }),
+          'success',
+          {
+            closable: false,
+          },
+        )
+        return true
+      }
+
+      // 如果有子任务，递归查找
+      if (taskArray[i].children && taskArray[i].children.length > 0) {
+        if (deleteStoryFromArray(taskArray[i].children!)) {
+          return true
+        }
+      }
+    }
+    return false
+  }
+
+  if (deleteStoryFromArray(tasks.value)) {
+    // 删除成功后，清理predecessor依赖关系
+    cleanupPredecessorReferences(deletedTaskIds)
+  } else {
+    showMessage(formatTranslation('storyNotFound', { id: storyToDelete.id }), 'warning', {
+      closable: true,
+    })
+  }
+}
+
+// 仅删除story，保留子任务
+const handleStoryDeleteOnly = (storyToDelete: Task) => {
+  // 递归查找story并处理其子任务
+  const deleteStoryOnlyFromArray = (taskArray: Task[]): boolean => {
+    for (let i = 0; i < taskArray.length; i++) {
+      if (taskArray[i].id === storyToDelete.id) {
+        // 找到story
+        const childrenToPromote = taskArray[i].children || []
+
+        // 步骤a: 克隆并升级子任务
+        const upgradedChildren: Task[] = []
+        if (childrenToPromote.length > 0) {
+          childrenToPromote.forEach(child => {
+            // 深度克隆子任务
+            const clonedChild = JSON.parse(JSON.stringify(child))
+            // 升级：移除parentId，使其成为顶级任务
+            delete clonedChild.parentId
+            upgradedChildren.push(clonedChild)
+          })
+        }
+
+        // 步骤b: 删除story数据
+        taskArray.splice(i, 1)
+
+        // 将升级后的子任务push到tasks集合顶层
+        if (upgradedChildren.length > 0) {
+          tasks.value.push(...upgradedChildren)
+        }
+
+        showMessage(
+          formatTranslation('storyDeleteOnlySuccess', {
+            name: storyToDelete.name,
+            count: upgradedChildren.length,
+          }),
+          'success',
+          {
+            closable: false,
+          },
+        )
+        return true
+      }
+
+      // 如果有子任务，递归查找
+      if (taskArray[i].children && taskArray[i].children.length > 0) {
+        if (deleteStoryOnlyFromArray(taskArray[i].children!)) {
+          return true
+        }
+      }
+    }
+    return false
+  }
+
+  if (deleteStoryOnlyFromArray(tasks.value)) {
+    // 删除成功后，清理story的predecessor依赖关系（只清理story本身的ID，不影响子任务）
+    cleanupPredecessorReferences([storyToDelete.id])
+  } else {
+    showMessage(formatTranslation('storyNotFound', { id: storyToDelete.id }), 'warning', {
+      closable: true,
+    })
   }
 }
 
@@ -328,7 +452,9 @@ const handleMilestoneIconChange = (milestoneId: number, icon: string) => {
   if (milestoneIndex !== -1) {
     milestones.value[milestoneIndex].icon = icon
   } else {
-    showMessage(`未找到要更新图标的里程碑，ID： ${milestoneId}`, 'warning', { closable: true })
+    showMessage(formatTranslation('milestoneIconUpdateNotFound', { id: milestoneId }), 'warning', {
+      closable: true,
+    })
   }
 }
 
@@ -350,10 +476,16 @@ const handleTaskDrawerClose = () => {
   isEditMode.value = false
 }
 
-const handleTaskDrawerDelete = (taskId: number) => {
-  const taskToDelete = tasks.value.find(t => t.id === taskId)
-  if (taskToDelete) {
-    handleTaskDelete(taskToDelete)
+const handleTaskDrawerDelete = (task: Task, deleteChildren?: boolean) => {
+  if (task.type === 'story' && deleteChildren === true) {
+    // 删除story及其所有子任务
+    handleStoryDeleteWithChildren(task)
+  } else if (task.type === 'story' && deleteChildren === false) {
+    // 仅删除story，保留子任务
+    handleStoryDeleteOnly(task)
+  } else {
+    // 普通任务删除
+    handleTaskDelete(task)
   }
   showTaskDrawer.value = false
 }
@@ -411,6 +543,50 @@ function findTaskDeep(taskArray: Task[], id: number): Task | null {
   }
   return null
 }
+
+// 清理被删除任务的predecessor依赖关系
+const cleanupPredecessorReferences = (deletedTaskIds: number[]) => {
+  // 递归清理所有任务（包括嵌套的子任务）的predecessor
+  const cleanupTaskArray = (taskArray: Task[]) => {
+    taskArray.forEach(task => {
+      if (task.predecessor) {
+        // 将predecessor字符串解析为ID数组
+        const predecessorIds = task.predecessor
+          .split(',')
+          .map(id => parseInt(id.trim()))
+          .filter(id => !isNaN(id))
+
+        // 过滤掉被删除的任务ID
+        const validPredecessorIds = predecessorIds.filter(id => !deletedTaskIds.includes(id))
+
+        // 更新predecessor属性
+        if (validPredecessorIds.length === 0) {
+          delete task.predecessor
+        } else {
+          task.predecessor = validPredecessorIds.join(',')
+        }
+      }
+
+      // 递归处理子任务
+      if (task.children && task.children.length > 0) {
+        cleanupTaskArray(task.children)
+      }
+    })
+  }
+
+  cleanupTaskArray(tasks.value)
+}
+
+// 收集被删除任务及其所有子任务的ID
+const collectAllTaskIds = (task: Task): number[] => {
+  const ids = [task.id]
+  if (task.children && task.children.length > 0) {
+    task.children.forEach(child => {
+      ids.push(...collectAllTaskIds(child))
+    })
+  }
+  return ids
+}
 </script>
 
 <template>
@@ -459,7 +635,7 @@ function findTaskDeep(taskArray: Task[], id: number): Task | null {
         :on-milestone-delete="handleMilestoneDelete"
         :on-task-update="handleTaskUpdate"
         :on-task-add="handleTaskAdd"
-        :on-task-delete="handleTaskDelete"
+        :on-task-delete="handleTaskDrawerDelete"
         :on-milestone-icon-change="handleMilestoneIconChange"
         @taskbar-drag-end="handleTaskbarDragOrResizeEnd"
         @taskbar-resize-end="handleTaskbarDragOrResizeEnd"
diff --git a/demo/version-history.json b/demo/version-history.json
index 58d7745..5b39e5b 100644
--- a/demo/version-history.json
+++ b/demo/version-history.json
@@ -115,5 +115,14 @@
       "Story进度根据子任务集进度改编重新计算",
       "同时保留Story进度单独的调整方式"
     ]
+  },
+  {
+    "version": "1.0.9",
+    "date": "2025-07-04",
+    "notes": [
+      "更新多语言标签",
+      "增加Story删除时选择是否删除子任务的选项",
+      "删除Story或Task时同时删除前后的关系线路"
+    ]
   }
 ]
diff --git a/package-lock.json b/package-lock.json
index 9b2f1d1..d69bf2a 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,13 @@
 {
   "name": "jordium-gantt-vue3",
-  "version": "1.0.0",
+  "version": "1.0.9",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "jordium-gantt-vue3",
-      "version": "1.0.0",
+      "version": "1.0.9",
+      "license": "MIT",
       "dependencies": {
         "date-fns": "^4.1.0",
         "html2canvas": "^1.4.1",
diff --git a/package.json b/package.json
index b63204c..5aafb53 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jordium-gantt-vue3",
-  "version": "1.0.6",
+  "version": "1.0.9",
   "type": "module",
   "main": "dist/jordium-gantt-vue3.cjs.js",
   "module": "dist/jordium-gantt-vue3.es.js",
diff --git a/packageDemo/App.vue b/packageDemo/App.vue
index 0277485..92d9faf 100644
--- a/packageDemo/App.vue
+++ b/packageDemo/App.vue
@@ -9,9 +9,11 @@ import packageInfo from '../package.json'
 import '../src/styles/theme-variables.css'
 import VersionHistoryDrawer from './VersionHistoryDrawer.vue'
 import { useMessage } from '../src/composables/useMessage'
+import { useI18n } from '../src/composables/useI18n'
 import type { Task } from '../src/models/Task'
 
 const { showMessage } = useMessage()
+const { t, formatTranslation } = useI18n()
 
 const tasks = ref<Task[]>([])
 const milestones = ref<Task[]>([])
@@ -42,7 +44,7 @@ const toolbarConfig = {
 
 // 自定义CSV导出处理器（可选）
 const handleCustomCsvExport = () => {
-  showMessage('自定义CSV导出被调用', 'info', { closable: true })
+  showMessage(t.value.customCsvExportCalled, 'info', { closable: true })
 
   // 这里可以实现自定义的CSV导出逻辑
   // 例如：添加额外的数据处理、格式化、或发送到服务器等
@@ -70,11 +72,17 @@ const handleAddMilestone = () => {
 }
 
 const handleLanguageChange = (lang: 'zh' | 'en') => {
-  showMessage(`语言切换到：${lang}`, 'info', { closable: true })
+  const languageText = lang === 'zh' ? '中文' : 'English'
+  showMessage(formatTranslation('languageSwitchedTo', { language: languageText }), 'info', {
+    closable: true,
+  })
 }
 
 const handleThemeChange = (isDark: boolean) => {
-  showMessage(`主题切换到：${isDark ? '暗黑模式' : '明亮模式'}`, 'info', { closable: true })
+  const themeText = isDark ? t.value.darkModeText : t.value.lightModeText
+  showMessage(formatTranslation('themeSwitchedTo', { theme: themeText }), 'info', {
+    closable: true,
+  })
 }
 
 // 里程碑保存处理器示例
@@ -104,7 +112,7 @@ const handleMilestoneDelete = async (milestoneId: number) => {
   const milestoneIndex = milestones.value.findIndex(m => m.id === milestoneId)
   if (milestoneIndex !== -1) {
     milestones.value.splice(milestoneIndex, 1)
-    showMessage('里程碑删除成功', 'success', { closable: false })
+    showMessage(t.value.milestoneDeleteSuccess, 'success', { closable: false })
 
     // 等待DOM更新完成
     await nextTick()
@@ -146,7 +154,9 @@ const handleTaskUpdate = (updatedTask: Task) => {
 
   const originalTask = findOriginalTask(tasks.value)
   if (!originalTask) {
-    showMessage(`未找到要更新的任务，ID： ${updatedTask.id}`, 'warning', { closable: true })
+    showMessage(formatTranslation('taskNotFound', { id: updatedTask.id }), 'warning', {
+      closable: true,
+    })
     return
   }
 
@@ -203,9 +213,11 @@ const handleTaskUpdate = (updatedTask: Task) => {
       }
 
       if (!addToParentChildren(tasks.value)) {
-        showMessage(`未找到新父任务，ID： ${taskToAdd.parentId}，将作为顶级任务添加`, 'warning', {
-          closable: true,
-        })
+        showMessage(
+          formatTranslation('newParentTaskNotFound', { parentId: taskToAdd.parentId }),
+          'warning',
+          { closable: true },
+        )
         tasks.value.push(taskToAdd)
       }
     } else {
@@ -237,7 +249,9 @@ const handleTaskUpdate = (updatedTask: Task) => {
     }
 
     if (!updateTaskInPlace(tasks.value)) {
-      showMessage(`就地更新失败，未找到任务，ID： ${updatedTask.id}`, 'warning', { closable: true })
+      showMessage(formatTranslation('inPlaceUpdateFailed', { id: updatedTask.id }), 'warning', {
+        closable: true,
+      })
     }
   }
 }
@@ -285,7 +299,6 @@ const handleTaskAdd = (newTask: Task) => {
 
     // 尝试添加到父任务的children中
     if (!addToParentChildren(tasks.value)) {
-      console.warn('未找到父任务，ID：', newTask.parentId, '，将作为顶级任务添加')
       // 如果没找到父任务，作为顶级任务添加
       tasks.value.push({ ...newTask })
     }
@@ -297,13 +310,16 @@ const handleTaskAdd = (newTask: Task) => {
 
 // 任务删除处理器
 const handleTaskDelete = (taskToDelete: Task) => {
+  // 收集要删除的所有任务ID（包括子任务）
+  const deletedTaskIds = collectAllTaskIds(taskToDelete)
+
   // 递归查找和删除任务（支持嵌套结构）
   const deleteTaskFromArray = (taskArray: Task[]): boolean => {
     for (let i = 0; i < taskArray.length; i++) {
       if (taskArray[i].id === taskToDelete.id) {
         // 找到任务，删除它
         taskArray.splice(i, 1)
-        showMessage('已删除任务', 'success', { closable: false })
+        showMessage(t.value.taskDeletedSuccess, 'success', { closable: false })
         return true
       }
 
@@ -317,8 +333,116 @@ const handleTaskDelete = (taskToDelete: Task) => {
     return false
   }
 
-  if (!deleteTaskFromArray(tasks.value)) {
-    showMessage(`未找到要删除的任务，ID： ${taskToDelete.id}`, 'warning', { closable: true })
+  if (deleteTaskFromArray(tasks.value)) {
+    // 删除成功后，清理predecessor依赖关系
+    cleanupPredecessorReferences(deletedTaskIds)
+  } else {
+    showMessage(formatTranslation('taskToDeleteNotFound', { id: taskToDelete.id }), 'warning', {
+      closable: true,
+    })
+  }
+}
+
+// 删除story及其所有子任务
+const handleStoryDeleteWithChildren = (storyToDelete: Task) => {
+  // 收集要删除的所有任务ID（story及其所有子任务）
+  const deletedTaskIds = collectAllTaskIds(storyToDelete)
+
+  // 递归查找和删除story（包含其所有子任务）
+  const deleteStoryFromArray = (taskArray: Task[]): boolean => {
+    for (let i = 0; i < taskArray.length; i++) {
+      if (taskArray[i].id === storyToDelete.id) {
+        // 找到story，直接删除它（包含所有子任务）
+        taskArray.splice(i, 1)
+        showMessage(
+          formatTranslation('storyDeleteAllSuccess', { name: storyToDelete.name }),
+          'success',
+          {
+            closable: false,
+          },
+        )
+        return true
+      }
+
+      // 如果有子任务，递归查找
+      if (taskArray[i].children && taskArray[i].children.length > 0) {
+        if (deleteStoryFromArray(taskArray[i].children!)) {
+          return true
+        }
+      }
+    }
+    return false
+  }
+
+  if (deleteStoryFromArray(tasks.value)) {
+    // 删除成功后，清理predecessor依赖关系
+    cleanupPredecessorReferences(deletedTaskIds)
+  } else {
+    showMessage(formatTranslation('storyNotFound', { id: storyToDelete.id }), 'warning', {
+      closable: true,
+    })
+  }
+}
+
+// 仅删除story，保留子任务
+const handleStoryDeleteOnly = (storyToDelete: Task) => {
+  // 递归查找story并处理其子任务
+  const deleteStoryOnlyFromArray = (taskArray: Task[]): boolean => {
+    for (let i = 0; i < taskArray.length; i++) {
+      if (taskArray[i].id === storyToDelete.id) {
+        // 找到story
+        const childrenToPromote = taskArray[i].children || []
+
+        // 步骤a: 克隆并升级子任务
+        const upgradedChildren: Task[] = []
+        if (childrenToPromote.length > 0) {
+          childrenToPromote.forEach(child => {
+            // 深度克隆子任务
+            const clonedChild = JSON.parse(JSON.stringify(child))
+            // 升级：移除parentId，使其成为顶级任务
+            delete clonedChild.parentId
+            upgradedChildren.push(clonedChild)
+          })
+        }
+
+        // 步骤b: 删除story数据
+        taskArray.splice(i, 1)
+
+        // 将升级后的子任务push到tasks集合顶层
+        if (upgradedChildren.length > 0) {
+          tasks.value.push(...upgradedChildren)
+        }
+
+        showMessage(
+          formatTranslation('storyDeleteOnlySuccess', {
+            name: storyToDelete.name,
+            count: upgradedChildren.length,
+          }),
+          'success',
+          {
+            closable: false,
+          },
+        )
+        return true
+      }
+
+      // 如果有子任务，递归查找
+      if (taskArray[i].children && taskArray[i].children.length > 0) {
+        if (deleteStoryOnlyFromArray(taskArray[i].children!)) {
+          return true
+        }
+      }
+    }
+    return false
+  }
+
+  if (deleteStoryOnlyFromArray(tasks.value)) {
+    // 删除成功后，清理story的predecessor依赖关系（只清理story本身的ID，不影响子任务）
+    cleanupPredecessorReferences([storyToDelete.id])
+  } else {
+    showMessage(formatTranslation('storyNotFound', { id: storyToDelete.id }), 'warning', {
+      closable: true,
+    })
   }
 }
 
@@ -328,7 +452,9 @@ const handleMilestoneIconChange = (milestoneId: number, icon: string) => {
   if (milestoneIndex !== -1) {
     milestones.value[milestoneIndex].icon = icon
   } else {
-    showMessage(`未找到要更新图标的里程碑，ID： ${milestoneId}`, 'warning', { closable: true })
+    showMessage(formatTranslation('milestoneIconUpdateNotFound', { id: milestoneId }), 'warning', {
+      closable: true,
+    })
   }
 }
 
@@ -350,10 +476,16 @@ const handleTaskDrawerClose = () => {
   isEditMode.value = false
 }
 
-const handleTaskDrawerDelete = (taskId: number) => {
-  const taskToDelete = tasks.value.find(t => t.id === taskId)
-  if (taskToDelete) {
-    handleTaskDelete(taskToDelete)
+const handleTaskDrawerDelete = (task: Task, deleteChildren?: boolean) => {
+  if (task.type === 'story' && deleteChildren === true) {
+    // 删除story及其所有子任务
+    handleStoryDeleteWithChildren(task)
+  } else if (task.type === 'story' && deleteChildren === false) {
+    // 仅删除story，保留子任务
+    handleStoryDeleteOnly(task)
+  } else {
+    // 普通任务删除
+    handleTaskDelete(task)
   }
   showTaskDrawer.value = false
 }
@@ -411,6 +543,50 @@ function findTaskDeep(taskArray: Task[], id: number): Task | null {
   }
   return null
 }
+
+// 清理被删除任务的predecessor依赖关系
+const cleanupPredecessorReferences = (deletedTaskIds: number[]) => {
+  // 递归清理所有任务（包括嵌套的子任务）的predecessor
+  const cleanupTaskArray = (taskArray: Task[]) => {
+    taskArray.forEach(task => {
+      if (task.predecessor) {
+        // 将predecessor字符串解析为ID数组
+        const predecessorIds = task.predecessor
+          .split(',')
+          .map(id => parseInt(id.trim()))
+          .filter(id => !isNaN(id))
+
+        // 过滤掉被删除的任务ID
+        const validPredecessorIds = predecessorIds.filter(id => !deletedTaskIds.includes(id))
+
+        // 更新predecessor属性
+        if (validPredecessorIds.length === 0) {
+          delete task.predecessor
+        } else {
+          task.predecessor = validPredecessorIds.join(',')
+        }
+      }
+
+      // 递归处理子任务
+      if (task.children && task.children.length > 0) {
+        cleanupTaskArray(task.children)
+      }
+    })
+  }
+
+  cleanupTaskArray(tasks.value)
+}
+
+// 收集被删除任务及其所有子任务的ID
+const collectAllTaskIds = (task: Task): number[] => {
+  const ids = [task.id]
+  if (task.children && task.children.length > 0) {
+    task.children.forEach(child => {
+      ids.push(...collectAllTaskIds(child))
+    })
+  }
+  return ids
+}
 </script>
 
 <template>
@@ -459,7 +635,7 @@ function findTaskDeep(taskArray: Task[], id: number): Task | null {
         :on-milestone-delete="handleMilestoneDelete"
         :on-task-update="handleTaskUpdate"
         :on-task-add="handleTaskAdd"
-        :on-task-delete="handleTaskDelete"
+        :on-task-delete="handleTaskDrawerDelete"
         :on-milestone-icon-change="handleMilestoneIconChange"
         @taskbar-drag-end="handleTaskbarDragOrResizeEnd"
         @taskbar-resize-end="handleTaskbarDragOrResizeEnd"
diff --git a/packageDemo/package-lock.json b/packageDemo/package-lock.json
index e188e7c..d466882 100644
--- a/packageDemo/package-lock.json
+++ b/packageDemo/package-lock.json
@@ -8,9 +8,6 @@
       "name": "packagedemo",
       "version": "1.0.0",
       "license": "MIT",
-      "dependencies": {
-        "jordium-gantt-vue3": "^1.0.1"
-      },
       "devDependencies": {
         "@typescript-eslint/eslint-plugin": "^6.21.0",
         "@typescript-eslint/parser": "^6.21.0",
@@ -30,6 +27,7 @@
       "version": "7.27.1",
       "resolved": "https://registry.npmjs.org/@babel/helper-string-parser/-/helper-string-parser-7.27.1.tgz",
       "integrity": "sha512-qMlSxKbpRlAridDExk92nSobyDdpPijUq2DW6oDnUqd0iOGxmQjyqhMIihI9+zv4LPyZdRje2cavWPbCbWm3eA==",
+      "dev": true,
       "engines": {
         "node": ">=6.9.0"
       }
@@ -38,6 +36,7 @@
       "version": "7.27.1",
       "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.27.1.tgz",
       "integrity": "sha512-D2hP9eA+Sqx1kBZgzxZh0y1trbuU+JoDkiEwqhQ36nodYqJwyEIhPSdMNd7lOm/4io72luTPWH20Yda0xOuUow==",
+      "dev": true,
       "engines": {
         "node": ">=6.9.0"
       }
@@ -46,6 +45,7 @@
       "version": "7.27.7",
       "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.27.7.tgz",
       "integrity": "sha512-qnzXzDXdr/po3bOTbTIQZ7+TxNKxpkN5IifVLXS+r7qwynkZfPyjZfE7hCXbo7IoO9TNcSyibgONsf2HauUd3Q==",
+      "dev": true,
       "dependencies": {
         "@babel/types": "^7.27.7"
       },
@@ -56,18 +56,11 @@
         "node": ">=6.0.0"
       }
     },
-    "node_modules/@babel/runtime": {
-      "version": "7.27.6",
-      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.27.6.tgz",
-      "integrity": "sha512-vbavdySgbTTrmFE+EsiqUTzlOr5bzlnJtUv9PynGCAKvfQqjIXbvFdumPM/GxMDfyuGMJaJAU6TO4zc1Jf1i8Q==",
-      "engines": {
-        "node": ">=6.9.0"
-      }
-    },
     "node_modules/@babel/types": {
       "version": "7.27.7",
       "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.27.7.tgz",
       "integrity": "sha512-8OLQgDScAOHXnAz2cV+RfzzNMipuLVBz2biuAJFMV9bfkNf393je3VM8CLkjQodW5+iWsSJdSgSWT6rsZoXHPw==",
+      "dev": true,
       "dependencies": {
         "@babel/helper-string-parser": "^7.27.1",
         "@babel/helper-validator-identifier": "^7.27.1"
@@ -617,7 +610,9 @@
     "node_modules/@jridgewell/sourcemap-codec": {
       "version": "1.5.3",
       "resolved": "https://registry.npmjs.org/@jridgewell/sourcemap-codec/-/sourcemap-codec-1.5.3.tgz",
-      "integrity": "sha512-AiR5uKpFxP3PjO4R19kQGIMwxyRyPuXmKEEy301V1C0+1rVjS94EZQXf1QKZYN8Q0YM+estSPhmx5JwNftv6nw=="
+      "integrity": "sha512-AiR5uKpFxP3PjO4R19kQGIMwxyRyPuXmKEEy301V1C0+1rVjS94EZQXf1QKZYN8Q0YM+estSPhmx5JwNftv6nw==",
+      "dev": true,
+      "peer": true
     },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.5",
@@ -938,24 +933,12 @@
       "integrity": "sha512-5+fP8P8MFNC+AyZCDxrB2pkZFPGzqQWUzpSeuuVLvm8VMcorNYavBqoFcxK8bQz4Qsbn4oUEEem4wDLfcysGHA==",
       "dev": true
     },
-    "node_modules/@types/raf": {
-      "version": "3.4.3",
-      "resolved": "https://registry.npmjs.org/@types/raf/-/raf-3.4.3.tgz",
-      "integrity": "sha512-c4YAvMedbPZ5tEyxzQdMoOhhJ4RD3rngZIdwC2/qDN3d7JpEhB6fiBRKVY1lg5B7Wk+uPBjn5f39j1/2MY1oOw==",
-      "optional": true
-    },
     "node_modules/@types/semver": {
       "version": "7.7.0",
       "resolved": "https://registry.npmjs.org/@types/semver/-/semver-7.7.0.tgz",
       "integrity": "sha512-k107IF4+Xr7UHjwDc7Cfd6PRQfbdkiRabXGRjo07b4WyPahFBZCZ1sE+BNxYIJPPg73UkfOsVOLwqVc/6ETrIA==",
       "dev": true
     },
-    "node_modules/@types/trusted-types": {
-      "version": "2.0.7",
-      "resolved": "https://registry.npmjs.org/@types/trusted-types/-/trusted-types-2.0.7.tgz",
-      "integrity": "sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw==",
-      "optional": true
-    },
     "node_modules/@typescript-eslint/eslint-plugin": {
       "version": "6.21.0",
       "resolved": "https://registry.npmjs.org/@typescript-eslint/eslint-plugin/-/eslint-plugin-6.21.0.tgz",
@@ -1195,6 +1178,7 @@
       "version": "3.5.17",
       "resolved": "https://registry.npmjs.org/@vue/compiler-core/-/compiler-core-3.5.17.tgz",
       "integrity": "sha512-Xe+AittLbAyV0pabcN7cP7/BenRBNcteM4aSDCtRvGw0d9OL+HG1u/XHLY/kt1q4fyMeZYXyIYrsHuPSiDPosA==",
+      "dev": true,
       "dependencies": {
         "@babel/parser": "^7.27.5",
         "@vue/shared": "3.5.17",
@@ -1207,6 +1191,7 @@
       "version": "3.5.17",
       "resolved": "https://registry.npmjs.org/@vue/compiler-dom/-/compiler-dom-3.5.17.tgz",
       "integrity": "sha512-+2UgfLKoaNLhgfhV5Ihnk6wB4ljyW1/7wUIog2puUqajiC29Lp5R/IKDdkebh9jTbTogTbsgB+OY9cEWzG95JQ==",
+      "dev": true,
       "dependencies": {
         "@vue/compiler-core": "3.5.17",
         "@vue/shared": "3.5.17"
@@ -1216,6 +1201,8 @@
       "version": "3.5.17",
       "resolved": "https://registry.npmjs.org/@vue/compiler-sfc/-/compiler-sfc-3.5.17.tgz",
       "integrity": "sha512-rQQxbRJMgTqwRugtjw0cnyQv9cP4/4BxWfTdRBkqsTfLOHWykLzbOc3C4GGzAmdMDxhzU/1Ija5bTjMVrddqww==",
+      "dev": true,
+      "peer": true,
       "dependencies": {
         "@babel/parser": "^7.27.5",
         "@vue/compiler-core": "3.5.17",
@@ -1232,6 +1219,8 @@
       "version": "3.5.17",
       "resolved": "https://registry.npmjs.org/@vue/compiler-ssr/-/compiler-ssr-3.5.17.tgz",
       "integrity": "sha512-hkDbA0Q20ZzGgpj5uZjb9rBzQtIHLS78mMilwrlpWk2Ep37DYntUz0PonQ6kr113vfOEdM+zTBuJDaceNIW0tQ==",
+      "dev": true,
+      "peer": true,
       "dependencies": {
         "@vue/compiler-dom": "3.5.17",
         "@vue/shared": "3.5.17"
@@ -1313,6 +1302,8 @@
       "version": "3.5.17",
       "resolved": "https://registry.npmjs.org/@vue/reactivity/-/reactivity-3.5.17.tgz",
       "integrity": "sha512-l/rmw2STIscWi7SNJp708FK4Kofs97zc/5aEPQh4bOsReD/8ICuBcEmS7KGwDj5ODQLYWVN2lNibKJL1z5b+Lw==",
+      "dev": true,
+      "peer": true,
       "dependencies": {
         "@vue/shared": "3.5.17"
       }
@@ -1321,6 +1312,8 @@
       "version": "3.5.17",
       "resolved": "https://registry.npmjs.org/@vue/runtime-core/-/runtime-core-3.5.17.tgz",
       "integrity": "sha512-QQLXa20dHg1R0ri4bjKeGFKEkJA7MMBxrKo2G+gJikmumRS7PTD4BOU9FKrDQWMKowz7frJJGqBffYMgQYS96Q==",
+      "dev": true,
+      "peer": true,
       "dependencies": {
         "@vue/reactivity": "3.5.17",
         "@vue/shared": "3.5.17"
@@ -1330,6 +1323,8 @@
       "version": "3.5.17",
       "resolved": "https://registry.npmjs.org/@vue/runtime-dom/-/runtime-dom-3.5.17.tgz",
       "integrity": "sha512-8El0M60TcwZ1QMz4/os2MdlQECgGoVHPuLnQBU3m9h3gdNRW9xRmI8iLS4t/22OQlOE6aJvNNlBiCzPHur4H9g==",
+      "dev": true,
+      "peer": true,
       "dependencies": {
         "@vue/reactivity": "3.5.17",
         "@vue/runtime-core": "3.5.17",
@@ -1341,6 +1336,8 @@
       "version": "3.5.17",
       "resolved": "https://registry.npmjs.org/@vue/server-renderer/-/server-renderer-3.5.17.tgz",
       "integrity": "sha512-BOHhm8HalujY6lmC3DbqF6uXN/K00uWiEeF22LfEsm9Q93XeJ/plHTepGwf6tqFcF7GA5oGSSAAUock3VvzaCA==",
+      "dev": true,
+      "peer": true,
       "dependencies": {
         "@vue/compiler-ssr": "3.5.17",
         "@vue/shared": "3.5.17"
@@ -1352,7 +1349,8 @@
     "node_modules/@vue/shared": {
       "version": "3.5.17",
       "resolved": "https://registry.npmjs.org/@vue/shared/-/shared-3.5.17.tgz",
-      "integrity": "sha512-CabR+UN630VnsJO/jHWYBC1YVXyMq94KKp6iF5MQgZJs5I8cmjw6oVMO1oDbtBkENSHSSn/UadWlW/OAgdmKrg=="
+      "integrity": "sha512-CabR+UN630VnsJO/jHWYBC1YVXyMq94KKp6iF5MQgZJs5I8cmjw6oVMO1oDbtBkENSHSSn/UadWlW/OAgdmKrg==",
+      "dev": true
     },
     "node_modules/@vue/tsconfig": {
       "version": "0.7.0",
@@ -1454,31 +1452,12 @@
         "node": ">=8"
       }
     },
-    "node_modules/atob": {
-      "version": "2.1.2",
-      "resolved": "https://registry.npmjs.org/atob/-/atob-2.1.2.tgz",
-      "integrity": "sha512-Wm6ukoaOGJi/73p/cl2GvLjTI5JM1k/O14isD73YML8StrH/7/lRFgmg8nICZgD3bZZvjwCGxtMOD3wWNAu8cg==",
-      "bin": {
-        "atob": "bin/atob.js"
-      },
-      "engines": {
-        "node": ">= 4.5.0"
-      }
-    },
     "node_modules/balanced-match": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/balanced-match/-/balanced-match-1.0.2.tgz",
       "integrity": "sha512-3oSeUO0TMV67hN1AmbXsK4yaqU7tjiHlbxRDZOpH0KW9+CeX4bRAaX0Anxt0tx2MrpRpWwQaPwIlISEJhYU5Pw==",
       "dev": true
     },
-    "node_modules/base64-arraybuffer": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/base64-arraybuffer/-/base64-arraybuffer-1.0.2.tgz",
-      "integrity": "sha512-I3yl4r9QB5ZRY3XuJVEPfc2XhZO6YweFPI+UovAzn+8/hb3oJ6lnysaFcjVpkCPfVWFUDvoZ8kmVDP7WyRtYtQ==",
-      "engines": {
-        "node": ">= 0.6.0"
-      }
-    },
     "node_modules/boolbase": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/boolbase/-/boolbase-1.0.0.tgz",
@@ -1506,17 +1485,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/btoa": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/btoa/-/btoa-1.2.1.tgz",
-      "integrity": "sha512-SB4/MIGlsiVkMcHmT+pSmIPoNDoHg+7cMzmt3Uxt628MTz2487DKSqK/fuhFBrkuqrYv5UCEnACpF4dTFNKc/g==",
-      "bin": {
-        "btoa": "bin/btoa.js"
-      },
-      "engines": {
-        "node": ">= 0.4.0"
-      }
-    },
     "node_modules/callsites": {
       "version": "3.1.0",
       "resolved": "https://registry.npmjs.org/callsites/-/callsites-3.1.0.tgz",
@@ -1526,25 +1494,6 @@
         "node": ">=6"
       }
     },
-    "node_modules/canvg": {
-      "version": "3.0.11",
-      "resolved": "https://registry.npmjs.org/canvg/-/canvg-3.0.11.tgz",
-      "integrity": "sha512-5ON+q7jCTgMp9cjpu4Jo6XbvfYwSB2Ow3kzHKfIyJfaCAOHLbdKPQqGKgfED/R5B+3TFFfe8pegYA+b423SRyA==",
-      "optional": true,
-      "dependencies": {
-        "@babel/runtime": "^7.12.5",
-        "@types/raf": "^3.4.0",
-        "core-js": "^3.8.3",
-        "raf": "^3.4.1",
-        "regenerator-runtime": "^0.13.7",
-        "rgbcolor": "^1.0.1",
-        "stackblur-canvas": "^2.0.0",
-        "svg-pathdata": "^6.0.3"
-      },
-      "engines": {
-        "node": ">=10.0.0"
-      }
-    },
     "node_modules/chalk": {
       "version": "4.1.2",
       "resolved": "https://registry.npmjs.org/chalk/-/chalk-4.1.2.tgz",
@@ -1585,17 +1534,6 @@
       "integrity": "sha512-/Srv4dswyQNBfohGpz9o6Yb3Gz3SrUDqBH5rTuhGR7ahtlbYKnVxw2bCFMRljaA7EXHaXZ8wsHdodFvbkhKmqg==",
       "dev": true
     },
-    "node_modules/core-js": {
-      "version": "3.43.0",
-      "resolved": "https://registry.npmjs.org/core-js/-/core-js-3.43.0.tgz",
-      "integrity": "sha512-N6wEbTTZSYOY2rYAn85CuvWWkCK6QweMn7/4Nr3w+gDBeBhk/x4EJeY6FPo4QzDoJZxVTv8U7CMvgWk6pOHHqA==",
-      "hasInstallScript": true,
-      "optional": true,
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/core-js"
-      }
-    },
     "node_modules/cross-spawn": {
       "version": "7.0.6",
       "resolved": "https://registry.npmjs.org/cross-spawn/-/cross-spawn-7.0.6.tgz",
@@ -1610,14 +1548,6 @@
         "node": ">= 8"
       }
     },
-    "node_modules/css-line-break": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/css-line-break/-/css-line-break-2.1.0.tgz",
-      "integrity": "sha512-FHcKFCZcAha3LwfVBhCQbW2nCNbkZXn7KVUJcsT5/P8YmfsVja0FMPJr0B903j/E69HUphKiV9iQArX8SDYA4w==",
-      "dependencies": {
-        "utrie": "^1.0.2"
-      }
-    },
     "node_modules/cssesc": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/cssesc/-/cssesc-3.0.0.tgz",
@@ -1633,16 +1563,9 @@
     "node_modules/csstype": {
       "version": "3.1.3",
       "resolved": "https://registry.npmjs.org/csstype/-/csstype-3.1.3.tgz",
-      "integrity": "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw=="
-    },
-    "node_modules/date-fns": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/date-fns/-/date-fns-4.1.0.tgz",
-      "integrity": "sha512-Ukq0owbQXxa/U3EGtsdVBkR1w7KOQ5gIBqdH2hkvknzZPYvBxb/aa6E8L7tmjFtkwZBu3UXBbjIgPo/Ez4xaNg==",
-      "funding": {
-        "type": "github",
-        "url": "https://github.com/sponsors/kossnocorp"
-      }
+      "integrity": "sha512-M1uQkMl8rQK/szD0LNhtqxIPLpimGm8sOBwU7lLnCpSbTyY3yeU1Vc7l4KT5zT4s/yOxHH5O7tIuuLOCnLADRw==",
+      "dev": true,
+      "peer": true
     },
     "node_modules/de-indent": {
       "version": "1.0.2",
@@ -1697,19 +1620,11 @@
         "node": ">=6.0.0"
       }
     },
-    "node_modules/dompurify": {
-      "version": "3.2.6",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.2.6.tgz",
-      "integrity": "sha512-/2GogDQlohXPZe6D6NOgQvXLPSYBqIWMnZ8zzOhn09REE4eyAzb+Hed3jhoM9OkuaJ8P6ZGTTVWQKAi8ieIzfQ==",
-      "optional": true,
-      "optionalDependencies": {
-        "@types/trusted-types": "^2.0.7"
-      }
-    },
     "node_modules/entities": {
       "version": "4.5.0",
       "resolved": "https://registry.npmjs.org/entities/-/entities-4.5.0.tgz",
       "integrity": "sha512-V0hjH4dGPh9Ao5p0MoRY6BVqtwCjhz6vI5LT8AJ55H+4g9/4vbHx1I54fS0XuclLhDHArPQCiMjDxjaL8fPxhw==",
+      "dev": true,
       "engines": {
         "node": ">=0.12"
       },
@@ -1992,7 +1907,8 @@
     "node_modules/estree-walker": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-2.0.2.tgz",
-      "integrity": "sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w=="
+      "integrity": "sha512-Rfkk/Mp/DL7JVje3u18FxFujQlTNR2q6QfMSMB7AvCBx91NGj/ba3kCfza0f6dVDbw7YlRf/nDrn7pQrCCyQ/w==",
+      "dev": true
     },
     "node_modules/esutils": {
       "version": "2.0.3",
@@ -2064,11 +1980,6 @@
         "reusify": "^1.0.4"
       }
     },
-    "node_modules/fflate": {
-      "version": "0.8.2",
-      "resolved": "https://registry.npmjs.org/fflate/-/fflate-0.8.2.tgz",
-      "integrity": "sha512-cPJU47OaAoCbg0pBvzsgpTPhmhqI5eJjh/JIu8tPj5q+T7iLvW/JAYUqmE7KOB4R1ZyEhzBaIQpQpardBF5z8A=="
-    },
     "node_modules/file-entry-cache": {
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/file-entry-cache/-/file-entry-cache-6.0.1.tgz",
@@ -2263,18 +2174,6 @@
         "he": "bin/he"
       }
     },
-    "node_modules/html2canvas": {
-      "version": "1.4.1",
-      "resolved": "https://registry.npmjs.org/html2canvas/-/html2canvas-1.4.1.tgz",
-      "integrity": "sha512-fPU6BHNpsyIhr8yyMpTLLxAbkaK8ArIBcmZIRiBLiDhjeqvXolaEmDGmELFuX9I4xDcaKKcJl+TKZLqruBbmWA==",
-      "dependencies": {
-        "css-line-break": "^2.1.0",
-        "text-segmentation": "^1.0.3"
-      },
-      "engines": {
-        "node": ">=8.0.0"
-      }
-    },
     "node_modules/ignore": {
       "version": "5.3.2",
       "resolved": "https://registry.npmjs.org/ignore/-/ignore-5.3.2.tgz",
@@ -2371,20 +2270,6 @@
       "integrity": "sha512-RHxMLp9lnKHGHRng9QFhRCMbYAcVpn69smSGcq3f36xjgVVWThj4qqLbTLlq7Ssj8B+fIQ1EuCEGI2lKsyQeIw==",
       "dev": true
     },
-    "node_modules/jordium-gantt-vue3": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/jordium-gantt-vue3/-/jordium-gantt-vue3-1.0.1.tgz",
-      "integrity": "sha512-LaFzGN6LZnlSGhUxp8sEKK1YCtQX4NoE4V0yKBOIiUhF22ykJjtHXkQnOu5jH/Wtm0WR+WhQC/AOzA+WLl+VUA==",
-      "dependencies": {
-        "date-fns": "^4.1.0",
-        "html2canvas": "^1.4.1",
-        "jspdf": "^3.0.1",
-        "vue": "^3.5.13"
-      },
-      "peerDependencies": {
-        "vue": "^3.5.13"
-      }
-    },
     "node_modules/js-yaml": {
       "version": "4.1.0",
       "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz",
@@ -2415,23 +2300,6 @@
       "integrity": "sha512-Bdboy+l7tA3OGW6FjyFHWkP5LuByj1Tk33Ljyq0axyzdk9//JSi2u3fP1QSmd1KNwq6VOKYGlAu87CisVir6Pw==",
       "dev": true
     },
-    "node_modules/jspdf": {
-      "version": "3.0.1",
-      "resolved": "https://registry.npmjs.org/jspdf/-/jspdf-3.0.1.tgz",
-      "integrity": "sha512-qaGIxqxetdoNnFQQXxTKUD9/Z7AloLaw94fFsOiJMxbfYdBbrBuhWmbzI8TVjrw7s3jBY1PFHofBKMV/wZPapg==",
-      "dependencies": {
-        "@babel/runtime": "^7.26.7",
-        "atob": "^2.1.2",
-        "btoa": "^1.2.1",
-        "fflate": "^0.8.1"
-      },
-      "optionalDependencies": {
-        "canvg": "^3.0.11",
-        "core-js": "^3.6.0",
-        "dompurify": "^3.2.4",
-        "html2canvas": "^1.0.0-rc.5"
-      }
-    },
     "node_modules/keyv": {
       "version": "4.5.4",
       "resolved": "https://registry.npmjs.org/keyv/-/keyv-4.5.4.tgz",
@@ -2485,6 +2353,8 @@
       "version": "0.30.17",
       "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.17.tgz",
       "integrity": "sha512-sNPKHvyjVf7gyjwS4xGTaW/mCnF8wnjtifKBEhxfZ7E/S8tQ0rssrwGNn6q8JH/ohItJfSQp9mBtQYuTlH5QnA==",
+      "dev": true,
+      "peer": true,
       "dependencies": {
         "@jridgewell/sourcemap-codec": "^1.5.0"
       }
@@ -2542,6 +2412,7 @@
       "version": "3.3.11",
       "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.11.tgz",
       "integrity": "sha512-N8SpfPUnUp1bK+PMYW8qSWdl9U+wwNWI4QKxOYDy9JAro3WMX7p2OeVRF9v+347pnakNevPmiHhNmZ2HbFA76w==",
+      "dev": true,
       "funding": [
         {
           "type": "github",
@@ -2683,16 +2554,11 @@
         "node": ">=8"
       }
     },
-    "node_modules/performance-now": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/performance-now/-/performance-now-2.1.0.tgz",
-      "integrity": "sha512-7EAHlyLHI56VEIdK57uwHdHKIaAGbnXPiw0yWbarQZOKaKpvUIgW0jWRVLiatnM+XXlSwsanIBH/hzGMJulMow==",
-      "optional": true
-    },
     "node_modules/picocolors": {
       "version": "1.1.1",
       "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.1.1.tgz",
-      "integrity": "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA=="
+      "integrity": "sha512-xceH2snhtb5M9liqDsmEw56le376mTZkEX/jEb/RxNFyegNul7eNslCXP9FDj/Lcu0X8KEyMceP2ntpaHrDEVA==",
+      "dev": true
     },
     "node_modules/picomatch": {
       "version": "2.3.1",
@@ -2710,6 +2576,7 @@
       "version": "8.5.6",
       "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.5.6.tgz",
       "integrity": "sha512-3Ybi1tAuwAP9s0r1UQ2J4n5Y0G05bJkpUIO0/bI9MhwmD70S5aTWbXGBwxHrelT+XM1k6dM0pk+SwNkpTRN7Pg==",
+      "dev": true,
       "funding": [
         {
           "type": "opencollective",
@@ -2811,21 +2678,6 @@
         }
       ]
     },
-    "node_modules/raf": {
-      "version": "3.4.1",
-      "resolved": "https://registry.npmjs.org/raf/-/raf-3.4.1.tgz",
-      "integrity": "sha512-Sq4CW4QhwOHE8ucn6J34MqtZCeWFP2aQSmrlroYgqAV1PjStIhJXxYuTgUIfkEk7zTLjmIjLmU5q+fbD1NnOJA==",
-      "optional": true,
-      "dependencies": {
-        "performance-now": "^2.1.0"
-      }
-    },
-    "node_modules/regenerator-runtime": {
-      "version": "0.13.11",
-      "resolved": "https://registry.npmjs.org/regenerator-runtime/-/regenerator-runtime-0.13.11.tgz",
-      "integrity": "sha512-kY1AZVr2Ra+t+piVaJ4gxaFaReZVH40AKNo7UCX6W+dEwBo/2oZJzqfuN1qLq1oL45o56cPaTXELwrTh8Fpggg==",
-      "optional": true
-    },
     "node_modules/resolve-from": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-4.0.0.tgz",
@@ -2845,15 +2697,6 @@
         "node": ">=0.10.0"
       }
     },
-    "node_modules/rgbcolor": {
-      "version": "1.0.1",
-      "resolved": "https://registry.npmjs.org/rgbcolor/-/rgbcolor-1.0.1.tgz",
-      "integrity": "sha512-9aZLIrhRaD97sgVhtJOW6ckOEh6/GnvQtdVNfdZ6s67+3/XwLS9lBcQYzEEhYVeUowN7pRzMLsyGhK2i/xvWbw==",
-      "optional": true,
-      "engines": {
-        "node": ">= 0.8.15"
-      }
-    },
     "node_modules/rimraf": {
       "version": "3.0.2",
       "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-3.0.2.tgz",
@@ -2978,19 +2821,11 @@
       "version": "1.2.1",
       "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.1.tgz",
       "integrity": "sha512-UXWMKhLOwVKb728IUtQPXxfYU+usdybtUrK/8uGE8CQMvrhOpwvzDBwj0QhSL7MQc7vIsISBG8VQ8+IDQxpfQA==",
+      "dev": true,
       "engines": {
         "node": ">=0.10.0"
       }
     },
-    "node_modules/stackblur-canvas": {
-      "version": "2.7.0",
-      "resolved": "https://registry.npmjs.org/stackblur-canvas/-/stackblur-canvas-2.7.0.tgz",
-      "integrity": "sha512-yf7OENo23AGJhBriGx0QivY5JP6Y1HbrrDI6WLt6C5auYZXlQrheoY8hD4ibekFKz1HOfE48Ww8kMWMnJD/zcQ==",
-      "optional": true,
-      "engines": {
-        "node": ">=0.1.14"
-      }
-    },
     "node_modules/strip-ansi": {
       "version": "6.0.1",
       "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
@@ -3027,15 +2862,6 @@
         "node": ">=8"
       }
     },
-    "node_modules/svg-pathdata": {
-      "version": "6.0.3",
-      "resolved": "https://registry.npmjs.org/svg-pathdata/-/svg-pathdata-6.0.3.tgz",
-      "integrity": "sha512-qsjeeq5YjBZ5eMdFuUa4ZosMLxgr5RZ+F+Y1OrDhuOCEInRMA3x74XdBtggJcj9kOeInz0WE+LgCPDkZFlBYJw==",
-      "optional": true,
-      "engines": {
-        "node": ">=12.0.0"
-      }
-    },
     "node_modules/synckit": {
       "version": "0.11.8",
       "resolved": "https://registry.npmjs.org/synckit/-/synckit-0.11.8.tgz",
@@ -3051,14 +2877,6 @@
         "url": "https://opencollective.com/synckit"
       }
     },
-    "node_modules/text-segmentation": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/text-segmentation/-/text-segmentation-1.0.3.tgz",
-      "integrity": "sha512-iOiPUo/BGnZ6+54OsWxZidGCsdU8YbE4PSpdPinp7DeMtUJNJBoJ/ouUSTJjHkh1KntHaltHl/gDs2FC4i5+Nw==",
-      "dependencies": {
-        "utrie": "^1.0.2"
-      }
-    },
     "node_modules/text-table": {
       "version": "0.2.0",
       "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
@@ -3159,7 +2977,7 @@
       "version": "5.8.3",
       "resolved": "https://registry.npmjs.org/typescript/-/typescript-5.8.3.tgz",
       "integrity": "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ==",
-      "devOptional": true,
+      "dev": true,
       "bin": {
         "tsc": "bin/tsc",
         "tsserver": "bin/tsserver"
@@ -3183,14 +3001,6 @@
       "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw==",
       "dev": true
     },
-    "node_modules/utrie": {
-      "version": "1.0.2",
-      "resolved": "https://registry.npmjs.org/utrie/-/utrie-1.0.2.tgz",
-      "integrity": "sha512-1MLa5ouZiOmQzUbjbu9VmjLzn1QLXBhwpUa7kdLUQK+KQ5KA9I1vk5U4YHe/X2Ch7PYnJfWuWT+VbuxbGwljhw==",
-      "dependencies": {
-        "base64-arraybuffer": "^1.0.2"
-      }
-    },
     "node_modules/vite": {
       "version": "6.3.5",
       "resolved": "https://registry.npmjs.org/vite/-/vite-6.3.5.tgz",
@@ -3301,6 +3111,8 @@
       "version": "3.5.17",
       "resolved": "https://registry.npmjs.org/vue/-/vue-3.5.17.tgz",
       "integrity": "sha512-LbHV3xPN9BeljML+Xctq4lbz2lVHCR6DtbpTf5XIO6gugpXUN49j2QQPcMj086r9+AkJ0FfUT8xjulKKBkkr9g==",
+      "dev": true,
+      "peer": true,
       "dependencies": {
         "@vue/compiler-dom": "3.5.17",
         "@vue/compiler-sfc": "3.5.17",
diff --git a/packageDemo/package.json b/packageDemo/package.json
index d191f1c..94fc345 100644
--- a/packageDemo/package.json
+++ b/packageDemo/package.json
@@ -19,9 +19,6 @@
   ],
   "author": "Jordium.com",
   "license": "MIT",
-  "dependencies": {
-    "jordium-gantt-vue3": "^1.0.1"
-  },
   "devDependencies": {
     "@typescript-eslint/eslint-plugin": "^6.21.0",
     "@typescript-eslint/parser": "^6.21.0",
diff --git a/packageDemo/version-history.json b/packageDemo/version-history.json
index f284358..5b39e5b 100644
--- a/packageDemo/version-history.json
+++ b/packageDemo/version-history.json
@@ -90,5 +90,39 @@
     "version": "1.0.2",
     "date": "2025-07-01",
     "notes": ["升级README文档", "增加贡献说明", "增加贡献者列表"]
+  },
+  {
+    "version": "1.0.3",
+    "date": "2025-07-02",
+    "notes": ["增加Github Pages", "修改README, 添加GIthub在线Demo入口", "移除大体积静态资源"]
+  },
+  {
+    "version": "1.0.4",
+    "date": "2025-07-02",
+    "notes": ["修改NPM徽章CDN"]
+  },
+  {
+    "version": "1.0.5",
+    "date": "2025-07-02",
+    "notes": ["更新README中所有NPM徽章CDN地址"]
+  },
+  {
+    "version": "1.0.6",
+    "date": "2025-07-03",
+    "notes": [
+      "更新TaskDrawer组件的Progressbar样式",
+      "可通过拖拽进度条和文本修改的方式更改任务的进度",
+      "Story进度根据子任务集进度改编重新计算",
+      "同时保留Story进度单独的调整方式"
+    ]
+  },
+  {
+    "version": "1.0.9",
+    "date": "2025-07-04",
+    "notes": [
+      "更新多语言标签",
+      "增加Story删除时选择是否删除子任务的选项",
+      "删除Story或Task时同时删除前后的关系线路"
+    ]
   }
 ]
diff --git a/src/components/GanttChart.vue b/src/components/GanttChart.vue
index 3f4d492..6a7d2c7 100644
--- a/src/components/GanttChart.vue
+++ b/src/components/GanttChart.vue
@@ -51,7 +51,7 @@ interface Props {
   // 是否使用默认的TaskDrawer
   useDefaultDrawer?: boolean
   // 自定义删除处理器API
-  onTaskDelete?: (task: Task) => void
+  onTaskDelete?: (task: Task, deleteChildren?: boolean) => void
   // 里程碑保存处理器API
   onMilestoneSave?: (milestone: Task) => void
   // 里程碑删除处理器API
diff --git a/src/components/GanttConfirmDialog.vue b/src/components/GanttConfirmDialog.vue
index 37728e5..c05730b 100644
--- a/src/components/GanttConfirmDialog.vue
+++ b/src/components/GanttConfirmDialog.vue
@@ -7,10 +7,15 @@ const props = defineProps({
   message: { type: String, default: '' },
   confirmText: { type: String, default: '确认' },
   cancelText: { type: String, default: '取消' },
+  yesText: { type: String, default: '是' },
+  noText: { type: String, default: '否' },
+  type: { type: String, default: 'confirm-cancel' }, // 'confirm-cancel' | 'yes-no-cancel'
 })
-const emit = defineEmits(['confirm', 'cancel'])
+const emit = defineEmits(['confirm', 'cancel', 'yes', 'no'])
 const onConfirm = () => emit('confirm')
 const onCancel = () => emit('cancel')
+const onYes = () => emit('yes')
+const onNo = () => emit('no')
 </script>
 
 <template>
@@ -23,12 +28,27 @@ const onCancel = () => emit('cancel')
         <p>{{ props.message }}</p>
       </div>
       <div class="gantt-confirm-footer">
-        <button type="button" class="btn btn-default" @click="onCancel">
-          {{ props.cancelText }}
-        </button>
-        <button type="button" class="btn btn-danger" @click="onConfirm">
-          {{ props.confirmText }}
-        </button>
+        <template v-if="props.type === 'yes-no-cancel'">
+          <button type="button" class="btn btn-default" @click="onCancel">
+            {{ props.cancelText }}
+          </button>
+          <div class="gantt-confirm-footer-right">
+            <button type="button" class="btn btn-warning" @click="onNo">
+              {{ props.noText }}
+            </button>
+            <button type="button" class="btn btn-danger" @click="onYes">
+              {{ props.yesText }}
+            </button>
+          </div>
+        </template>
+        <template v-else>
+          <button type="button" class="btn btn-default" @click="onCancel">
+            {{ props.cancelText }}
+          </button>
+          <button type="button" class="btn btn-danger" @click="onConfirm">
+            {{ props.confirmText }}
+          </button>
+        </template>
       </div>
     </div>
   </div>
@@ -73,7 +93,13 @@ const onCancel = () => emit('cancel')
 }
 .gantt-confirm-footer {
   display: flex;
-  justify-content: flex-end;
+  justify-content: space-between;
+  align-items: center;
+  gap: 12px;
+}
+
+.gantt-confirm-footer-right {
+  display: flex;
   gap: 12px;
 }
 
diff --git a/src/components/TaskDrawer.vue b/src/components/TaskDrawer.vue
index dcde5ad..04d9010 100644
--- a/src/components/TaskDrawer.vue
+++ b/src/components/TaskDrawer.vue
@@ -25,7 +25,7 @@ const emit = defineEmits<{
   'update:visible': [value: boolean]
   submit: [task: Task]
   close: []
-  delete: [task: Task]
+  delete: [task: Task, deleteChildren?: boolean]
 }>()
 
 const { t } = useI18n()
@@ -35,6 +35,19 @@ const submitting = ref(false)
 const isVisible = ref(props.visible)
 const showDeleteConfirm = ref(false)
 
+// 根据任务类型确定dialog类型
+const dialogType = computed(() => {
+  return props.task?.type === 'story' ? 'yes-no-cancel' : 'confirm-cancel'
+})
+
+// 根据任务类型确定dialog消息
+const dialogMessage = computed(() => {
+  if (props.task?.type === 'story') {
+    return t.value.confirmDeleteStory.replace('{name}', props.task?.name || '')
+  }
+  return t.value.confirmDeleteTask.replace('{name}', props.task?.name || '')
+})
+
 // 表单数据
 const formData = reactive<Task>({
   id: 0, // 默认值，创建时会被重新分配
@@ -156,7 +169,7 @@ const handleProgressKeydown = (event: KeyboardEvent) => {
   ]
 
   // 允许数字
-  const isNumber = /^[0-9]$/.test(key)
+  const isNumber = /^\d$/.test(key)
   const isAllowedKey = allowedKeys.includes(key)
 
   // 如果是Ctrl+A、Ctrl+C、Ctrl+V、Ctrl+X等组合键，允许通过
@@ -167,7 +180,6 @@ const handleProgressKeydown = (event: KeyboardEvent) => {
   // 如果不是允许的按键或数字，阻止输入
   if (!isNumber && !isAllowedKey) {
     event.preventDefault()
-    return
   }
 }
 
@@ -311,6 +323,39 @@ const cancelDelete = () => {
   showDeleteConfirm.value = false
 }
 
+// Story删除：选择"是" - 删除story及其所有子任务
+const handleDeleteYes = () => {
+  showDeleteConfirm.value = false
+  if (props.task && props.isEdit) {
+    try {
+      submitting.value = true
+      emit('delete', props.task, true) // 传递true表示删除所有子任务
+      handleClose()
+    } catch (error) {
+      showMessage(t.value.taskDeleteFailed, 'error')
+    } finally {
+      submitting.value = false
+    }
+  }
+}
+
+// Story删除：选择"否" - 仅删除story，保留子任务
+// Story删除：选择"否" - 仅删除story，保留子任务
+const handleDeleteNo = () => {
+  showDeleteConfirm.value = false
+  if (props.task && props.isEdit) {
+    try {
+      submitting.value = true
+      emit('delete', props.task, false) // 传递false表示仅删除story
+      handleClose()
+    } catch (error) {
+      showMessage(t.value.taskDeleteFailed, 'error')
+    } finally {
+      submitting.value = false
+    }
+  }
+}
+
 // 获取任务数据的事件处理器
 const handleTasksChanged = (event: CustomEvent) => {
   allTasks.value = event.detail || []
@@ -390,7 +435,7 @@ watch(
           <div class="form-group">
             <label class="form-label" for="task-assignee">{{ t.assignee }}</label>
             <select id="task-assignee" v-model="formData.assignee" class="form-select">
-              <option value="">请选择负责人</option>
+              <option value="">{{ t.selectAssignee }}</option>
               <option value="张三">张三</option>
               <option value="李四">李四</option>
               <option value="王五">王五</option>
@@ -546,10 +591,15 @@ watch(
           <GanttConfirmDialog
             :visible="showDeleteConfirm"
             :title="t.delete"
-            :message="t.confirmDeleteTask.replace('{name}', task?.name || '')"
+            :type="dialogType"
+            :message="dialogMessage"
             :confirm-text="t.confirm"
             :cancel-text="t.cancel"
+            :yes-text="t.storyDeleteYes"
+            :no-text="t.storyDeleteNo"
             @confirm="confirmDelete"
+            @yes="handleDeleteYes"
+            @no="handleDeleteNo"
             @cancel="cancelDelete"
           />
         </div>
diff --git a/src/components/Timeline.vue b/src/components/Timeline.vue
index dd501a2..6a307e5 100644
--- a/src/components/Timeline.vue
+++ b/src/components/Timeline.vue
@@ -22,7 +22,7 @@ interface Props {
   // 是否使用默认的TaskDrawer
   useDefaultDrawer?: boolean
   // 自定义删除处理器
-  onTaskDelete?: (task: Task) => void
+  onTaskDelete?: (task: Task, deleteChildren?: boolean) => void
   // 里程碑保存事件处理器
   onMilestoneSave?: (milestone: Task) => void
   // 新增：外部传入的时间轴起止
@@ -810,12 +810,12 @@ onUnmounted(() => {
   }
 })
 
-const handleTaskDelete = (taskId: number) => {
+const handleTaskDelete = (taskId: number, deleteChildren?: boolean) => {
   // 调用父组件传入的删除处理器
   if (props.onTaskDelete && typeof props.onTaskDelete === 'function') {
     const taskToDelete = tasks.value.find(task => task.id === taskId)
     if (taskToDelete) {
-      props.onTaskDelete(taskToDelete)
+      props.onTaskDelete(taskToDelete, deleteChildren)
     }
   }
 
@@ -833,8 +833,8 @@ const handleTaskDelete = (taskId: number) => {
 }
 
 // TaskDrawer删除事件适配器
-const handleDrawerTaskDelete = (task: Task) => {
-  handleTaskDelete(task.id)
+const handleDrawerTaskDelete = (task: Task, deleteChildren?: boolean) => {
+  handleTaskDelete(task.id, deleteChildren)
 }
 
 // 暴露公共API
diff --git a/src/composables/useI18n.ts b/src/composables/useI18n.ts
index 08564bb..d2fb037 100644
--- a/src/composables/useI18n.ts
+++ b/src/composables/useI18n.ts
@@ -119,8 +119,31 @@ const messages = {
     taskUpdateSuccess: '任务更新成功',
     taskCreateSuccess: '任务创建成功',
     confirmDeleteTask: '确定要删除任务"{name}"吗？此操作不可撤销。',
-    taskDeleteSuccess: '任务删除成功',
     taskDeleteFailed: '删除失败，请重试',
+    // Story删除相关
+    confirmDeleteStory: '是否删除该需求{name}及其所有的子任务？该操作不可撤回',
+    storyDeleteYes: '是, 继续',
+    storyDeleteNo: '不，仅删除需求',
+    storyDeleteAllSuccess: '已删除需求【{name}】及其所有子任务',
+    storyDeleteOnlySuccess: '已删除需求【{name}】，{count}个子任务已升级保留',
+    storyNotFound: '未找到要删除的需求，ID：{id}',
+    // 里程碑删除成功
+    milestoneDeleteSuccess: '里程碑删除成功',
+    // 其他删除成功消息
+    taskDeletedSuccess: '已删除任务',
+    // 选择器占位符
+    selectAssignee: '请选择负责人',
+    // 通用消息
+    customCsvExportCalled: '自定义CSV导出被调用',
+    languageSwitchedTo: '语言切换到：{language}',
+    themeSwitchedTo: '主题切换到：{theme}',
+    lightModeText: '明亮模式',
+    darkModeText: '暗黑模式',
+    taskNotFound: '未找到要更新的任务，ID：{id}',
+    newParentTaskNotFound: '未找到新父任务，ID：{parentId}，将作为顶级任务添加',
+    inPlaceUpdateFailed: '就地更新失败，未找到任务，ID：{id}',
+    taskToDeleteNotFound: '未找到要删除的任务，ID：{id}',
+    milestoneIconUpdateNotFound: '未找到要更新图标的里程碑，ID：{id}',
     overtime: '超',
     overdue: '逾期',
     days: '天',
@@ -238,8 +261,33 @@ const messages = {
     taskCreateSuccess: 'Task created successfully',
     confirmDeleteTask:
       'Are you sure you want to delete task "{name}"? This action cannot be undone.',
-    taskDeleteSuccess: 'Task deleted successfully',
     taskDeleteFailed: 'Delete failed, please try again',
+    // Story deletion related
+    confirmDeleteStory:
+      'Do you want to delete the requirement {name} and all its subtasks? This action cannot be undone',
+    storyDeleteYes: 'Yes, Continue',
+    storyDeleteNo: 'No, Delete Requirement Only',
+    storyDeleteAllSuccess: 'Deleted requirement [{name}] and all its subtasks',
+    storyDeleteOnlySuccess: 'Deleted requirement [{name}], {count} subtasks have been promoted',
+    storyNotFound: 'Requirement not found, ID: {id}',
+    // Milestone deletion success
+    milestoneDeleteSuccess: 'Milestone deleted successfully',
+    // Other deletion success messages
+    taskDeletedSuccess: 'Task deleted',
+    // Selector placeholders
+    selectAssignee: 'Select assignee',
+    // Common messages
+    customCsvExportCalled: 'Custom CSV export called',
+    languageSwitchedTo: 'Language switched to: {language}',
+    themeSwitchedTo: 'Theme switched to: {theme}',
+    lightModeText: 'Light Mode',
+    darkModeText: 'Dark Mode',
+    taskNotFound: 'Task not found for update, ID: {id}',
+    newParentTaskNotFound:
+      'New parent task not found, ID: {parentId}, will be added as top-level task',
+    inPlaceUpdateFailed: 'In-place update failed, task not found, ID: {id}',
+    taskToDeleteNotFound: 'Task to delete not found, ID: {id}',
+    milestoneIconUpdateNotFound: 'Milestone not found for icon update, ID: {id}',
     overtime: 'Over',
     overdue: 'Overdue',
     days: ' days',
@@ -282,6 +330,15 @@ export function useI18n() {
     return typeof translation === 'string' ? translation : key
   }
 
+  // 格式化带参数的翻译文本
+  const formatTranslation = (key: string, params: Record<string, string | number>): string => {
+    let text = getTranslation(key)
+    Object.keys(params).forEach(param => {
+      text = text.replace(new RegExp(`{${param}}`, 'g'), String(params[param]))
+    })
+    return text
+  }
+
   // 切换语言
   const setLocale = (locale: Locale) => {
     currentLocale.value = locale
@@ -305,6 +362,7 @@ export function useI18n() {
   return {
     t,
     getTranslation,
+    formatTranslation,
     locale,
     setLocale,
     formatYearMonth,
diff --git a/src/styles/app.css b/src/styles/app.css
index 4478875..577e086 100644
--- a/src/styles/app.css
+++ b/src/styles/app.css
@@ -65,3 +65,14 @@
   background: #f78989;
   border-color: #f78989;
 }
+
+/* 通用 .btn-warning 按钮样式 */
+.btn-warning {
+  background: var(--gantt-warning, #e6a23c);
+  border-color: var(--gantt-warning, #e6a23c);
+  color: #fff;
+}
+.btn-warning:hover:not(:disabled) {
+  background: #ebb563;
+  border-color: #ebb563;
+}