update:1.切换数据库PostgreSQL

frontend/src/components/ChapterAnalysis.tsx

@@ -67,6 +67,14 @@ export default function ChapterAnalysis({ chapterId, visible, onClose }: Chapter
       }
       
       const taskData: AnalysisTask = await response.json();
+      
+      // 如果状态为 none（无任务），设置 task 为 null，让前端显示"开始分析"按钮
+      if (taskData.status === 'none' || !taskData.has_task) {
+        setTask(null);
+        setError(null); // 清除错误，这不是错误状态
+        return;
+      }
+      
       setTask(taskData);
       
       if (taskData.status === 'completed') {

frontend/src/pages/Chapters.tsx

@@ -321,6 +321,7 @@ export default function Chapters() {
         setAnalysisTasksMap(prev => ({
           ...prev,
           [editingId]: {
+            has_task: true,
             task_id: taskId,
             chapter_id: editingId,
             status: 'pending',

frontend/src/types/index.ts

@@ -390,14 +390,16 @@ export interface ApiError {
 
 // 章节分析任务相关类型
 export interface AnalysisTask {
-  task_id: string;
+  has_task: boolean;
+  task_id: string | null;
   chapter_id: string;
-  status: 'pending' | 'running' | 'completed' | 'failed';
+  status: 'pending' | 'running' | 'completed' | 'failed' | 'none';
   progress: number;
-  error_message?: string;
-  created_at?: string;
-  started_at?: string;
-  completed_at?: string;
+  error_message?: string | null;
+  auto_recovered?: boolean;
+  created_at?: string | null;
+  started_at?: string | null;
+  completed_at?: string | null;
 }
 
 // 分析结果 - 钩子