diff --git a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/ai/chat/DashScopeChat.java b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/ai/chat/DashScopeChat.java
index 91c9932f..054ed81a 100644
--- a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/ai/chat/DashScopeChat.java
+++ b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/ai/chat/DashScopeChat.java
@@ -32,7 +32,8 @@ public class DashScopeChat {
 
     private final ChatClient chatClient;
 
-    private static final String DEFAULT_PROMPT = "你叫煤球，是一个博学的智能聊天助手，请根据用户提问回答！";
+    private static final String DEFAULT_PROMPT =
+        "你是一名智能助手，代号为“煤球”。回答时不要提及自身身份或角色设定，除非用户主动询问；请直接提供清晰、准确、专业的回答。";
 
     private static final String DEFAULT_FILE_DIR = System.getProperty("user.dir") + "/chat-memory";
 
diff --git a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/ai/service/impl/AIChatMemoryServiceImpl.java b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/ai/service/impl/AIChatMemoryServiceImpl.java
index 577aa700..d842e50d 100644
--- a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/ai/service/impl/AIChatMemoryServiceImpl.java
+++ b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/ai/service/impl/AIChatMemoryServiceImpl.java
@@ -4,6 +4,7 @@ import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
 import com.baomidou.mybatisplus.core.toolkit.Wrappers;
 import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import lombok.extern.slf4j.Slf4j;
 import org.dromara.ai.domain.AIChatMemory;
 import org.dromara.ai.domain.dto.AIChatMemoryQueryReq;
 import org.dromara.ai.domain.dto.AIChatMemoryUpdateReq;
@@ -13,11 +14,15 @@ import org.dromara.ai.service.IAIChatMemoryService;
 import org.dromara.common.core.constant.HttpStatus;
 import org.dromara.common.core.exception.ServiceException;
 import org.dromara.common.core.utils.StringUtils;
+import org.dromara.common.core.utils.file.FileUtils;
 import org.dromara.common.mybatis.core.page.PageQuery;
 import org.dromara.common.mybatis.core.page.TableDataInfo;
 import org.springframework.beans.BeanUtils;
 import org.springframework.stereotype.Service;
 
+import java.io.File;
+import java.io.IOException;
+import java.util.ArrayList;
 import java.util.Collection;
 import java.util.List;
 
@@ -27,6 +32,7 @@ import java.util.List;
  * @author lilemy
  * @date 2025-11-04
  */
+@Slf4j
 @Service
 public class AIChatMemoryServiceImpl extends ServiceImpl<AIChatMemoryMapper, AIChatMemory>
     implements IAIChatMemoryService {
@@ -103,9 +109,42 @@ public class AIChatMemoryServiceImpl extends ServiceImpl<AIChatMemoryMapper, AIC
      */
     @Override
     public Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid) {
-        if (isValid) {
-            //TODO 做一些业务上的校验,判断是否需要校验
+        List<AIChatMemory> aiChatMemories = this.listByIds(ids);
+        if (aiChatMemories.size() != ids.size()) {
+            throw new ServiceException("数据不存在");
         }
-        return baseMapper.deleteByIds(ids) > 0;
+        // 暂存文件路径
+        List<File> filesToDelete = new ArrayList<>();
+        for (AIChatMemory mem : aiChatMemories) {
+            if (StringUtils.isNotBlank(mem.getFileName())) {
+                File file = new File(System.getProperty("user.dir")
+                    + "/chat-memory/", mem.getFileName());
+
+                try {
+                    // 防止目录穿越
+                    if (file.getCanonicalPath().startsWith(
+                        new File(System.getProperty("user.dir") + "/chat-memory").getCanonicalPath())) {
+                        filesToDelete.add(file);
+                    } else {
+                        log.warn("危险的 filename 路径被拒绝删除: {}", mem.getFileName());
+                    }
+                } catch (IOException e) {
+                    log.warn("filename 获取失败: {}", mem.getFileName());
+                    throw new ServiceException("文件获取失败: " + mem.getFileName());
+                }
+            }
+        }
+        // 删除数据库
+        boolean b = baseMapper.deleteByIds(ids) > 0;
+        if (!b) {
+            throw new ServiceException("数据库删除失败");
+        }
+        // 删除文件（非事务，不影响数据库逻辑）
+        for (File f : filesToDelete) {
+            if (f.exists() && !FileUtils.del(f)) {
+                log.warn("文件删除失败: {}", f.getAbsolutePath());
+            }
+        }
+        return true;
     }
 }
diff --git a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/bigscreen/service/impl/BusWjzxServiceImpl.java b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/bigscreen/service/impl/BusWjzxServiceImpl.java
index 1c7c9b3c..0e70fa93 100644
--- a/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/bigscreen/service/impl/BusWjzxServiceImpl.java
+++ b/xinnengyuan/ruoyi-modules/ruoyi-system/src/main/java/org/dromara/bigscreen/service/impl/BusWjzxServiceImpl.java
@@ -1,34 +1,33 @@
 package org.dromara.bigscreen.service.impl;
 
+import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
+import com.baomidou.mybatisplus.core.toolkit.Wrappers;
+import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
 import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import lombok.RequiredArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
+import org.dromara.bigscreen.domain.BusWjzx;
 import org.dromara.bigscreen.domain.dto.BusWjzxBo;
 import org.dromara.bigscreen.domain.vo.BusWjzxSjDateVo;
+import org.dromara.bigscreen.domain.vo.BusWjzxVo;
+import org.dromara.bigscreen.mapper.BusWjzxMapper;
+import org.dromara.bigscreen.service.IBusWjzxService;
 import org.dromara.common.core.domain.event.ProcessDeleteEvent;
 import org.dromara.common.core.domain.event.ProcessEvent;
 import org.dromara.common.core.domain.event.ProcessTaskEvent;
 import org.dromara.common.core.utils.MapstructUtils;
 import org.dromara.common.core.utils.StringUtils;
-import org.dromara.common.mybatis.core.page.TableDataInfo;
 import org.dromara.common.mybatis.core.page.PageQuery;
-import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
-import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
-import com.baomidou.mybatisplus.core.toolkit.Wrappers;
-import lombok.RequiredArgsConstructor;
-import org.dromara.common.satoken.utils.LoginHelper;
+import org.dromara.common.mybatis.core.page.TableDataInfo;
 import org.dromara.system.service.impl.SysOssServiceImpl;
-import org.dromara.xzd.biddingManagement.biddingDocument.domain.XzdBiddingFileEstimate;
-import org.dromara.xzd.biddingManagement.biddingDocument.domain.vo.XzdBiddingFileEstimateVo;
 import org.springframework.context.event.EventListener;
 import org.springframework.stereotype.Service;
-import org.dromara.bigscreen.domain.vo.BusWjzxVo;
-import org.dromara.bigscreen.domain.BusWjzx;
-import org.dromara.bigscreen.mapper.BusWjzxMapper;
-import org.dromara.bigscreen.service.IBusWjzxService;
 
 import java.time.LocalDate;
-import java.util.*;
-import java.util.stream.Collectors;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+import java.util.Map;
 
 /**
  * 文件中心Service业务层处理
@@ -53,7 +52,7 @@ public class BusWjzxServiceImpl extends ServiceImpl<BusWjzxMapper, BusWjzx> impl
      * @return 文件中心
      */
     @Override
-    public BusWjzxVo queryById(Long id){
+    public BusWjzxVo queryById(Long id) {
         return baseMapper.selectVoById(id);
     }
 
@@ -98,8 +97,7 @@ public class BusWjzxServiceImpl extends ServiceImpl<BusWjzxMapper, BusWjzx> impl
         Map<String, Object> params = bo.getParams();
         LambdaQueryWrapper<BusWjzx> lqw = Wrappers.lambdaQuery();
         lqw.orderByDesc(BusWjzx::getId);
-        lqw.eq(StringUtils.isNotBlank(bo.getWjm()), BusWjzx::getWjm, bo.getWjm());
-
+        lqw.like(StringUtils.isNotBlank(bo.getWjm()), BusWjzx::getWjm, bo.getWjm());
         lqw.eq(StringUtils.isNotBlank(bo.getAuditStatus()), BusWjzx::getAuditStatus, bo.getAuditStatus());
         lqw.eq(bo.getCreateBy() != null, BusWjzx::getCreateBy, bo.getCreateBy());
         return lqw;
@@ -115,7 +113,7 @@ public class BusWjzxServiceImpl extends ServiceImpl<BusWjzxMapper, BusWjzx> impl
     public Boolean insertByBo(BusWjzxBo bo) {
         BusWjzx add = MapstructUtils.convert(bo, BusWjzx.class);
         validEntityBeforeSave(add);
-        if (add != null && StringUtils.isNotBlank(add.getWjm())){
+        if (add != null && StringUtils.isNotBlank(add.getWjm())) {
             String[] split = add.getWjm().split("\\.");
             add.setWjlx(split[split.length - 1]);
         }
@@ -142,7 +140,7 @@ public class BusWjzxServiceImpl extends ServiceImpl<BusWjzxMapper, BusWjzx> impl
     /**
      * 保存前的数据校验
      */
-    private void validEntityBeforeSave(BusWjzx entity){
+    private void validEntityBeforeSave(BusWjzx entity) {
         //TODO 做一些数据校验,如唯一约束
     }
 
@@ -155,7 +153,7 @@ public class BusWjzxServiceImpl extends ServiceImpl<BusWjzxMapper, BusWjzx> impl
      */
     @Override
     public Boolean deleteWithValidByIds(Collection<Long> ids, Boolean isValid) {
-        if(isValid){
+        if (isValid) {
             //TODO 做一些业务上的校验,判断是否需要校验
         }
         ArrayList<Long> temp = new ArrayList<>();