update

modules/ai/src/main/java/com/bytedesk/ai/robot/RobotConsts.java

@@ -108,8 +108,8 @@ public class RobotConsts {
             3. 提升客户满意度;
             4. 严禁回答政治、暴力、色情等违法违规问题;
             5. 仅根据上下文内容回答问题，不要添加其他内容;
-            6. 如果上下文内容不完整，无法回答问题，直接回答“未查找到相关问题答案”，不要猜测;
             """;
+        //     6. 如果上下文内容不完整，无法回答问题，直接回答“未查找到相关问题答案”，不要猜测;
 
     // 默认知识库对话提示词
     public static final String ROBOT_LLM_CHAT_PROMPT = """

modules/ai/src/main/java/com/bytedesk/ai/robot/RobotRestController.java

@@ -183,6 +183,20 @@ public class RobotRestController extends BaseRestController<RobotRequest, RobotR
         return ResponseEntity.ok(JsonResult.success(robotResponse));
     }
 
+    @Operation(summary = "更新机器人提示词", description = "仅根据UID更新机器人提示词内容")
+    @ApiResponse(responseCode = "200", description = "更新成功",
+        content = @Content(mediaType = "application/json", 
+        schema = @Schema(implementation = RobotResponse.class)))
+    @PreAuthorize("hasAuthority('ROBOT_UPDATE')")
+    @ActionAnnotation(title = "机器人", action = "更新", description = "update robot prompt text")
+    @PostMapping("/update/prompt/text")
+    public ResponseEntity<?> updatePromptText(@RequestBody RobotRequest request) {
+
+        RobotResponse robotResponse = robotRestService.updatePromptText(request);
+
+        return ResponseEntity.ok(JsonResult.success(robotResponse));
+    }
+
     @Operation(summary = "更新机器人知识库", description = "更新机器人的知识库UID")
     @ApiResponse(responseCode = "200", description = "更新成功",
         content = @Content(mediaType = "application/json", 

modules/ai/src/main/java/com/bytedesk/ai/robot/RobotRestService.java

@@ -567,6 +567,33 @@ public class RobotRestService extends BaseRestServiceWithExport<RobotEntity, Rob
         return convertToResponse(savedRobot);
     }
 
+    @Transactional
+    public RobotResponse updatePromptText(RobotRequest request) {
+        if (!StringUtils.hasText(request.getUid())) {
+            throw new IllegalArgumentException("robot uid is required");
+        }
+        Optional<RobotEntity> robotOptional = findByUid(request.getUid());
+        if (!robotOptional.isPresent()) {
+            throw new NotFoundException("Robot not found with UID: " + request.getUid());
+        }
+        String newPrompt = resolvePromptValue(request);
+        if (!StringUtils.hasText(newPrompt)) {
+            throw new IllegalArgumentException("prompt is required");
+        }
+        RobotEntity robot = robotOptional.get();
+        RobotLlm robotLlm = robot.getLlm();
+        if (robotLlm == null) {
+            robotLlm = new RobotLlm();
+        }
+        robotLlm.setPrompt(newPrompt);
+        robot.setLlm(robotLlm);
+        RobotEntity savedRobot = save(robot);
+        if (savedRobot == null) {
+            throw new RuntimeException("update robot prompt " + request.getUid() + " failed");
+        }
+        return convertToResponse(savedRobot);
+    }
+
     // 知识库更新请通过 RobotSettings 接口更新 kbEnabled/kbUid
     @Transactional
     public RobotResponse updateKbUid(RobotRequest request) {
@@ -612,6 +639,16 @@ public class RobotRestService extends BaseRestServiceWithExport<RobotEntity, Rob
         return robot;
     }
 
+    private String resolvePromptValue(RobotRequest request) {
+        if (StringUtils.hasText(request.getPrompt())) {
+            return request.getPrompt();
+        }
+        if (request.getLlm() != null && StringUtils.hasText(request.getLlm().getPrompt())) {
+            return request.getLlm().getPrompt();
+        }
+        return null;
+    }
+
 
     // 初始化
     // public void initDefaultRobot(String orgUid, String uid) {

modules/ai/src/main/java/com/bytedesk/ai/springai/service/BaseSpringAIService.java

@@ -178,7 +178,7 @@ public abstract class BaseSpringAIService implements SpringAIService {
                     ? aggregated.getSourceReferences()
                     : new ArrayList<>();
             log.info("LLM 模式，KB 结果数 {}, 来源数 {}", kbResults.size(), sourceReferences.size());
-
+            
             if (kbResults.isEmpty()) {
                 // 未命中 KB：根据配置选择 默认回复 或 继续使用 LLM
                 boolean useLlmWhenKbEmpty = robot.getLlm() != null