feat: 重构知识库文档导入任务化流程

- 新增上传建单、异步解析、分块处理与异步向量化闭环

- 收口分享页权限、完成态检索过滤与 SSE 局部状态刷新

easyflow-ui-admin/app/src/views/ai/documentCollection/KnowledgeShareManagement.vue

@@ -129,16 +129,37 @@ const endpointDocs = computed(() => {
           },
           {
             method: 'POST',
-            path: '/document/import/commit',
-            hint: '导入文档',
+            path: '/document/import/task/create',
+            hint: '创建导入任务',
             params: [
               { name: 'knowledgeId', location: 'body', required: true },
               {
-                name: 'previewSessionIds',
+                name: 'fileName',
                 location: 'body',
                 required: true,
-                note: '预览接口返回的会话 ID 数组',
+                note: '文件名',
               },
+              { name: 'filePath', location: 'body', required: true, note: '上传后的文件路径' },
+            ],
+          },
+          {
+            method: 'POST',
+            path: '/document/import/task/preview',
+            hint: '生成分块预览',
+            params: [
+              { name: 'knowledgeId', location: 'body', required: true },
+              { name: 'documentId', location: 'body', required: true },
+              { name: 'files[0].strategyConfig', location: 'body', note: '拆分策略配置' },
+            ],
+          },
+          {
+            method: 'POST',
+            path: '/document/import/task/startIndex',
+            hint: '启动向量化',
+            params: [
+              { name: 'knowledgeId', location: 'body', required: true },
+              { name: 'documentId', location: 'body', required: true },
+              { name: 'previewSessionId', location: 'body', note: '预览接口返回的会话 ID' },
             ],
           },
         ];