智能助手优化，删除冗余代码

@@ -266,26 +266,6 @@ public class QuestionEmbeddingServiceImpl implements IQuestionEmbeddingService {
         return text.replaceAll("\\s+", " ").trim();
     }
 
-    private static boolean isHeading(Paragraph para, Range range) {
-        int styleIndex = para.getStyleIndex();
-        if (styleIndex >= 1 && styleIndex <= 9) {
-            return true;
-        }
-
-        try {
-            CharacterRun run = para.getCharacterRun(0);
-            if (run.isBold() || run.getFontSize() > 12) {
-                return true;
-            }
-        } catch (Exception e) {
-            log.warn("获取字符格式失败", e);
-        }
-
-        String text = para.text().trim();
-        return text.toUpperCase().equals(text) &&
-                text.length() < 100 &&
-                !text.contains("\t");
-    }
 
     private String removeUuidSuffix(String fileName) {
         // 移除UUID后缀部分
@@ -302,64 +282,6 @@ public class QuestionEmbeddingServiceImpl implements IQuestionEmbeddingService {
     }
 
 
-    // 后备分割方案：按段落结构分割
-    private List<String> splitByContentStructure(XWPFDocument doc) {
-        List<String> segments = new ArrayList<>();
-        StringBuilder currentSegment = new StringBuilder();
-        final int MAX_SEGMENT_LENGTH = 1000; // 最大分段长度
-
-        for (IBodyElement element : doc.getBodyElements()) {
-            String text = "";
-            if (element instanceof XWPFParagraph) {
-                text = ((XWPFParagraph) element).getText().trim();
-            } else if (element instanceof XWPFTable) {
-                text = extractTableContent((XWPFTable) element);
-            }
-
-            if (text.isEmpty()) continue;
-
-            // 当遇到空行或达到最大长度时分段
-            if (currentSegment.length() + text.length() > MAX_SEGMENT_LENGTH
-                    && currentSegment.length() > 0) {
-                segments.add(currentSegment.toString().trim());
-                currentSegment = new StringBuilder();
-            }
-
-            currentSegment.append(text).append("\n\n");
-        }
-
-        if (currentSegment.length() > 0) {
-            segments.add(currentSegment.toString().trim());
-        }
-        return segments;
-    }
-
-    // 按标题分割文本
-    private List<String> splitByHeadings(String content) {
-        List<String> segments = new ArrayList<>();
-        StringBuilder currentSegment = new StringBuilder();
-        String[] lines = content.split("\\r?\\n");
-
-        for (String line : lines) {
-            // 检测标题行（以1-6个#开头，后面跟着空格）
-            if (line.trim().matches("^#{1,6}\\s+.*")) {
-                // 保存当前分段
-                if (!currentSegment.isEmpty()) {
-                    segments.add(currentSegment.toString().trim());
-                    currentSegment = new StringBuilder();
-                }
-            }
-            currentSegment.append(line).append("\n");
-        }
-
-        // 添加最后一个分段
-        if (!currentSegment.isEmpty()) {
-            segments.add(currentSegment.toString().trim());
-        }
-
-        return segments;
-    }
-
     private String extractTableContent(XWPFTable table) {
         StringBuilder tableContent = new StringBuilder();
         table.getRows().forEach(row -> {
@@ -381,7 +303,6 @@ public class QuestionEmbeddingServiceImpl implements IQuestionEmbeddingService {
         try (XWPFDocument doc = new XWPFDocument(new FileInputStream(filePath))) {
             StringBuilder currentContent = new StringBuilder();
             List<String> titlePath = new ArrayList<>();
-            String lastOutput = null;
 
             for (IBodyElement element : doc.getBodyElements()) {
                 if (element instanceof XWPFParagraph) {

@@ -162,7 +162,7 @@ public class ZdyRagController {
                         "2. 严格基于参考内容回答，禁止使用参考内容中与问题无关的内容\n" +
                         "3. 回答结构：\n" +
                         "   - 首先用一句话直接回答问题核心（仅限参考内容中明确包含的信息）\n" +
-                        "   - 然后列出支持该答案的具体证据（可直接引用参考内容）\n" +
+                        "   - 然后列出支持该答案的具体内容（可直接引用参考内容）\n" +
                         "4. 禁止以下行为：\n" +
                         "   - 添加参考内容中不存在的信息\n" +
                         "   - 在回答中提及‘参考内容’等字样\n" +