diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8c343eb..1e954a2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,11 @@ 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).
 
+## [1.2.1] - 2025-07-22
+
+### Fixed
+- SonarQube代码质量检查问题修改
+
 ## [1.2.0] - 2025-07-21
 
 ### Added
diff --git a/demo/App.vue b/demo/App.vue
index 9827297..57d2326 100644
--- a/demo/App.vue
+++ b/demo/App.vue
@@ -118,14 +118,14 @@ const handleMilestoneDelete = async (milestoneId: number) => {
     window.dispatchEvent(
       new CustomEvent('milestone-deleted', {
         detail: { milestoneId },
-      }),
+      })
     )
 
     // 触发强制更新事件，确保Timeline重新渲染
     window.dispatchEvent(
       new CustomEvent('milestone-data-changed', {
         detail: { milestones: milestones.value },
-      }),
+      })
     )
   }
 
@@ -219,7 +219,7 @@ const handleTaskUpdate = (updatedTask: Task) => {
         showMessage(
           formatTranslation('newParentTaskNotFound', { parentId: taskToAdd.parentId }),
           'warning',
-          { closable: true },
+          { closable: true }
         )
         tasks.value.push(taskToAdd)
       }
@@ -267,7 +267,7 @@ const handleTaskAdd = (newTask: Task) => {
     const maxId = Math.max(
       ...tasks.value.map(t => t.id || 0),
       ...milestones.value.map(m => m.id || 0),
-      0,
+      0
     )
     newTask.id = maxId + 1
   }
@@ -362,7 +362,7 @@ const handleStoryDeleteWithChildren = (storyToDelete: Task) => {
           'success',
           {
             closable: false,
-          },
+          }
         )
         return true
       }
@@ -424,7 +424,7 @@ const handleStoryDeleteOnly = (storyToDelete: Task) => {
           'success',
           {
             closable: false,
-          },
+          }
         )
         return true
       }
@@ -498,7 +498,7 @@ function handleTaskbarDragOrResizeEnd(newTask) {
       `开始: ${oldTask.startDate} → ${newTask.startDate}\n` +
       `结束: ${oldTask.endDate} → ${newTask.endDate}`,
     'info',
-    { closable: true },
+    { closable: true }
   )
 }
 function handleMilestoneDragEnd(newMilestone) {
@@ -508,7 +508,7 @@ function handleMilestoneDragEnd(newMilestone) {
     `里程碑【${newMilestone.name}】\n` +
       `开始: ${oldMilestone.endDate} → ${newMilestone.startDate}`,
     'info',
-    { closable: true },
+    { closable: true }
   )
 }
 
@@ -573,9 +573,9 @@ const collectAllTaskIds = (task: Task): number[] => {
 // Timer事件处理
 function onTimerStarted(task: Task) {
   showMessage(
-    `Demo 任务【${task.name}】\n开始计时：${new Date(task.timerStartTime).toLocaleString()}${task.timerStartDesc ? `\n计时说明：${task.timerStartDesc}` : ''}`,
+    `Demo 任务【${task.name}】\n开始计时：${new Date(task.timerStartTime).toLocaleString()}\n计时说明：${task.timerStartDesc ? task.timerStartDesc : ''}`,
     'info',
-    { closable: true },
+    { closable: true }
   )
 }
 function onTimerStopped(task: Task) {
diff --git a/demo/version-history.json b/demo/version-history.json
index efc4407..bfe29c6 100644
--- a/demo/version-history.json
+++ b/demo/version-history.json
@@ -157,5 +157,10 @@
       "GanttChart增加@task-updated(编辑任务完成)事件",
       "升级TaskDrawer统一在GanttChart中管理"
     ]
+  },
+  {
+    "version": "1.2.1",
+    "date": "2025-07-22",
+    "notes": ["SonarQube代码质量检查问题修改"]
   }
 ]
diff --git a/package.json b/package.json
index cd28fbc..4c2cbe7 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "jordium-gantt-vue3",
-  "version": "1.2.0",
+  "version": "1.2.1",
   "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 9827297..57d2326 100644
--- a/packageDemo/App.vue
+++ b/packageDemo/App.vue
@@ -118,14 +118,14 @@ const handleMilestoneDelete = async (milestoneId: number) => {
     window.dispatchEvent(
       new CustomEvent('milestone-deleted', {
         detail: { milestoneId },
-      }),
+      })
     )
 
     // 触发强制更新事件，确保Timeline重新渲染
     window.dispatchEvent(
       new CustomEvent('milestone-data-changed', {
         detail: { milestones: milestones.value },
-      }),
+      })
     )
   }
 
@@ -219,7 +219,7 @@ const handleTaskUpdate = (updatedTask: Task) => {
         showMessage(
           formatTranslation('newParentTaskNotFound', { parentId: taskToAdd.parentId }),
           'warning',
-          { closable: true },
+          { closable: true }
         )
         tasks.value.push(taskToAdd)
       }
@@ -267,7 +267,7 @@ const handleTaskAdd = (newTask: Task) => {
     const maxId = Math.max(
       ...tasks.value.map(t => t.id || 0),
       ...milestones.value.map(m => m.id || 0),
-      0,
+      0
     )
     newTask.id = maxId + 1
   }
@@ -362,7 +362,7 @@ const handleStoryDeleteWithChildren = (storyToDelete: Task) => {
           'success',
           {
             closable: false,
-          },
+          }
         )
         return true
       }
@@ -424,7 +424,7 @@ const handleStoryDeleteOnly = (storyToDelete: Task) => {
           'success',
           {
             closable: false,
-          },
+          }
         )
         return true
       }
@@ -498,7 +498,7 @@ function handleTaskbarDragOrResizeEnd(newTask) {
       `开始: ${oldTask.startDate} → ${newTask.startDate}\n` +
       `结束: ${oldTask.endDate} → ${newTask.endDate}`,
     'info',
-    { closable: true },
+    { closable: true }
   )
 }
 function handleMilestoneDragEnd(newMilestone) {
@@ -508,7 +508,7 @@ function handleMilestoneDragEnd(newMilestone) {
     `里程碑【${newMilestone.name}】\n` +
       `开始: ${oldMilestone.endDate} → ${newMilestone.startDate}`,
     'info',
-    { closable: true },
+    { closable: true }
   )
 }
 
@@ -573,9 +573,9 @@ const collectAllTaskIds = (task: Task): number[] => {
 // Timer事件处理
 function onTimerStarted(task: Task) {
   showMessage(
-    `Demo 任务【${task.name}】\n开始计时：${new Date(task.timerStartTime).toLocaleString()}${task.timerStartDesc ? `\n计时说明：${task.timerStartDesc}` : ''}`,
+    `Demo 任务【${task.name}】\n开始计时：${new Date(task.timerStartTime).toLocaleString()}\n计时说明：${task.timerStartDesc ? task.timerStartDesc : ''}`,
     'info',
-    { closable: true },
+    { closable: true }
   )
 }
 function onTimerStopped(task: Task) {
diff --git a/packageDemo/version-history.json b/packageDemo/version-history.json
index efc4407..bfe29c6 100644
--- a/packageDemo/version-history.json
+++ b/packageDemo/version-history.json
@@ -157,5 +157,10 @@
       "GanttChart增加@task-updated(编辑任务完成)事件",
       "升级TaskDrawer统一在GanttChart中管理"
     ]
+  },
+  {
+    "version": "1.2.1",
+    "date": "2025-07-22",
+    "notes": ["SonarQube代码质量检查问题修改"]
   }
 ]
diff --git a/src/components/MultiSelectPredecessor.vue b/src/components/MultiSelectPredecessor.vue
index 1da4ff5..d8f118a 100644
--- a/src/components/MultiSelectPredecessor.vue
+++ b/src/components/MultiSelectPredecessor.vue
@@ -41,7 +41,7 @@ const availableTasks = computed(() => {
     task =>
       task.type === 'task' &&
       task.id !== props.currentTaskId &&
-      !selectedPredecessorIds.value.includes(task.id),
+      !selectedPredecessorIds.value.includes(task.id)
   )
 })
 
@@ -69,13 +69,13 @@ watch(
   () => {
     selectedValue.value = ''
   },
-  { immediate: true },
+  { immediate: true }
 )
 </script>
 
 <template>
   <div class="multi-select-predecessor">
-    <label class="form-label">{{ label }}</label>
+    <label class="form-label" for="predecessor-select">{{ label }}</label>
     <div class="predecessor-selector">
       <!-- 已选择的前置任务标签 -->
       <div v-if="selectedPredecessors.length > 0" class="selected-tags">
@@ -89,7 +89,12 @@ watch(
 
       <!-- 下拉选择器 -->
       <div class="select-wrapper">
-        <select v-model="selectedValue" class="form-select" @change="addPredecessor">
+        <select
+          id="predecessor-select"
+          v-model="selectedValue"
+          class="form-select"
+          @change="addPredecessor"
+        >
           <option value="">{{ placeholder }}</option>
           <option v-for="task in availableTasks" :key="task.id" :value="task.id">
             {{ task.name }} (ID: {{ task.id }})
diff --git a/src/components/TaskDrawer.vue b/src/components/TaskDrawer.vue
index 9d1c941..c5272f5 100644
--- a/src/components/TaskDrawer.vue
+++ b/src/components/TaskDrawer.vue
@@ -1117,10 +1117,6 @@ function confirmTimer(desc: string) {
   background: var(--gantt-primary, #409eff);
 }
 
-.progress-slider::-moz-range-track {
-  background: var(--gantt-border-light, #e4e7ed);
-}
-
 /* 为更好的兼容性，添加一个伪元素来显示已完成部分 */
 .progress-slider::before {
   content: '';