feat(chat): 新增保存润色结果向量接口并重构向量类型

- ChatController 新增 /save_embed 接口，接收 ChatSaveReq 保存用户选中润色句子的向量
- 统一向量参数由 List<Float> 改为 float[]，降低 GC 压力
- 向量搜索增加 ≥0.9 相似度过滤，仅返回高置信结果
- 精简 DemoController 测试接口，下线冗余的 testSaveEmbed/testSearch
- 调整 Embedding 模型为 qwen3-embedding-4b，降低资源占用
- 放开 /chat/save_embed 匿名访问，适配前端直调

src/main/java/com/yolo/keyborad/controller/ChatController.java

@@ -1,7 +1,11 @@
 package com.yolo.keyborad.controller;
 
 import cn.dev33.satoken.stp.StpUtil;
+import cn.hutool.core.util.IdUtil;
+import com.yolo.keyborad.common.BaseResponse;
+import com.yolo.keyborad.common.ResultUtils;
 import com.yolo.keyborad.model.dto.chat.ChatReq;
+import com.yolo.keyborad.model.dto.chat.ChatSaveReq;
 import com.yolo.keyborad.model.dto.chat.ChatStreamMessage;
 import com.yolo.keyborad.model.entity.KeyboardCharacter;
 import com.yolo.keyborad.service.KeyboardCharacterService;
@@ -12,6 +16,7 @@ import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.annotation.Resource;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.ai.chat.client.ChatClient;
+import org.springframework.ai.embedding.EmbeddingResponse;
 import org.springframework.ai.openai.OpenAiChatOptions;
 import org.springframework.ai.openai.OpenAiEmbeddingModel;
 import org.springframework.boot.context.properties.bind.DefaultValue;
@@ -47,15 +52,11 @@ public class ChatController {
 
     @PostMapping("/talk")
     @Operation(summary = "聊天润色接口", description = "聊天润色接口")
-    @Parameter(name = "userInput",required = true,description = "测试聊天接口",example = "talk to something")
     public Flux<ServerSentEvent<ChatStreamMessage>> testTalk(@RequestBody ChatReq chatReq){
-
         KeyboardCharacter character = keyboardCharacterService.getById(chatReq.getCharacterId());
-
         // 1. LLM 流式输出
         Flux<ChatStreamMessage> llmFlux = client
-                .prompt(character.getPrompt() +
-                        "\nUser message: %s".formatted(chatReq.getMessage()))
+                .prompt(character.getPrompt())
                 .system("""
                 Format rules:
                 - Return EXACTLY 3 replies.
@@ -97,8 +98,9 @@ public class ChatController {
     @PostMapping("/save_embed")
     @Operation(summary = "保存润色后的句子", description = "保存润色后的句子")
     @Parameter(name = "userInput",required = true,description = "测试聊天接口",example = "talk to something")
-    public Flux<String> testTalkWithVector(@RequestBody ChatReq chatReq) {
-
-        return null;
+    public BaseResponse<Boolean> testTalkWithVector(@RequestBody ChatSaveReq chatSaveReq) {
+        float[] embed = embeddingModel.embed(chatSaveReq.getUserInputMessage());
+        qdrantVectorService.upsertPoint(IdUtil.getSnowflakeNextId(), embed, chatSaveReq.getUserSelectMessage());
+        return ResultUtils.success(true);
     }
 }

src/main/java/com/yolo/keyborad/controller/DemoController.java

@@ -97,23 +97,23 @@ public class DemoController {
     }
 
 
-    @PostMapping("/testSaveEmbed")
-    @Operation(summary = "测试存储向量接口", description = "测试存储向量接口")
-    @Parameter(name = "userInput",required = true,description = "测试存储向量接口")
-    public BaseResponse<Boolean> testSaveEmbed(@RequestBody EmbedSaveReq embedSaveReq) {
-         qdrantVectorService.upsertPoint(embedSaveReq.getRecordItem().getId()
-                 , embedSaveReq.getVector()
-                 , JSONUtil.toJsonStr(embedSaveReq.getRecordItem()));
-        return ResultUtils.success(true);
-    }
+//    @PostMapping("/testSaveEmbed")
+//    @Operation(summary = "测试存储向量接口", description = "测试存储向量接口")
+//    @Parameter(name = "userInput",required = true,description = "测试存储向量接口")
+//    public BaseResponse<Boolean> testSaveEmbed(@RequestBody EmbedSaveReq embedSaveReq) {
+//         qdrantVectorService.upsertPoint(embedSaveReq.getRecordItem().getId()
+//                 , embedSaveReq.getVector()
+//                 , JSONUtil.toJsonStr(embedSaveReq.getRecordItem()));
+//        return ResultUtils.success(true);
+//    }
 
 
-    @PostMapping("/testSearch")
-    @Operation(summary = "测试搜索向量接口", description = "测试搜索向量接口")
-    @Parameter(name = "userInput",required = true,description = "测试搜索向量接口")
-    public BaseResponse<List<QdrantSearchItem>> testSearch(@RequestBody SearchEmbedReq searchEmbedReq) {
-        return ResultUtils.success(qdrantVectorService.searchPoint(searchEmbedReq.getUserInputEmbed(), 3));
-    }
+//    @PostMapping("/testSearch")
+//    @Operation(summary = "测试搜索向量接口", description = "测试搜索向量接口")
+//    @Parameter(name = "userInput",required = true,description = "测试搜索向量接口")
+//    public BaseResponse<List<QdrantSearchItem>> testSearch(@RequestBody SearchEmbedReq searchEmbedReq) {
+//        return ResultUtils.success(qdrantVectorService.searchPoint(searchEmbedReq.getUserInputEmbed(), 3));
+//    }
 
 
     @PostMapping("/tsetSearchText")