feat：替换 Dify 为自建 RAG去实现

1、修复了若干无权限时的失败提示语
2、新增了一个生成后续建议问题的功能
3、重构了知识问答部分的权限管理模块
4、修复了若干渲染不恰当的样式渲染

app/hooks/dify-dataset-manager/document-detail.ts

@@ -94,11 +94,24 @@ export function useDocumentDetail(datasetId: string, document: Document | null)
         pollIndexingStatus(batch);
     }, [stopPolling, pollIndexingStatus]);
 
-    // 当文档变化时重置设置
+    // 当文档变化时，从文档已有的 process_rule 回显设置，无则使用默认值
     useEffect(() => {
         if (document) {
-            // 可以从文档中读取已有的设置，这里使用默认值
-            setSettings(DEFAULT_DOCUMENT_DETAIL_SETTINGS);
+            const rule = (document as any).process_rule;
+            if (rule?.mode === 'custom' && rule?.rules) {
+                const seg = rule.rules.segmentation || {};
+                const preRules = rule.rules.pre_processing_rules || [];
+                setSettings({
+                    separator: (seg.separator || '\\n\\n').replace(/\n/g, '\\n'),
+                    maxTokens: seg.max_tokens || DEFAULT_DOCUMENT_DETAIL_SETTINGS.maxTokens,
+                    chunkOverlap: DEFAULT_DOCUMENT_DETAIL_SETTINGS.chunkOverlap,
+                    removeExtraSpaces: preRules.find((r: any) => r.id === 'remove_extra_spaces')?.enabled ?? DEFAULT_DOCUMENT_DETAIL_SETTINGS.removeExtraSpaces,
+                    removeUrlsEmails: preRules.find((r: any) => r.id === 'remove_urls_emails')?.enabled ?? DEFAULT_DOCUMENT_DETAIL_SETTINGS.removeUrlsEmails,
+                    indexingTechnique: DEFAULT_DOCUMENT_DETAIL_SETTINGS.indexingTechnique,
+                });
+            } else {
+                setSettings(DEFAULT_DOCUMENT_DETAIL_SETTINGS);
+            }
             setPreviewSegments([]);
             setShowPreview(false);
             setIsProcessing(false);