fix: cursor claude role error

Author: bincooo

relay/llm/cursor/adapter.go

@@ -123,7 +123,7 @@ func (api *api) Completion(ctx *gin.Context) (err error) {
 		cookie = strings.Split(cookie, "%3A%3A")[1]
 	}
 
-	buffer, err := convertRequest(completion)
+	buffer, err := convertRequest(ctx, completion)
 	if err != nil {
 		return
 	}

relay/llm/cursor/fetch.go

@@ -1,9 +1,11 @@
 package cursor
 
 import (
+	"chatgpt-adapter/core/gin/response"
 	"context"
 	"encoding/binary"
 	"fmt"
+	"github.com/gin-gonic/gin"
 	"github.com/iocgo/sdk/stream"
 	"math/rand"
 	"net/http"
@@ -40,7 +42,12 @@ func fetch(ctx context.Context, proxied string, cookie string, buffer []byte) (r
 	return
 }
 
-func convertRequest(completion model.Completion) (buffer []byte, err error) {
+func convertRequest(ctx *gin.Context, completion model.Completion) (buffer []byte, err error) {
+	specialized := ctx.GetBool("specialized")
+	if specialized && response.IsClaude(ctx, completion.Model) {
+		completion.Messages = completion.Messages[:1]
+		completion.Messages[0].Set("role", "user")
+	}
 	messages := stream.Map(stream.OfSlice(completion.Messages), func(message model.Keyv[interface{}]) *ChatMessage_UserMessage {
 		return &ChatMessage_UserMessage{
 			MessageId: uuid.NewString(),

relay/llm/cursor/message.go

@@ -208,7 +208,7 @@ func echoMessages(ctx *gin.Context, completion model.Completion) {
 
 func newScanner(body io.ReadCloser) (scanner *bufio.Scanner) {
 	// 每个字节占8位
-	// 00000011 第一个字节是占位符，应该是用来代表消息类型的 假定 0: 消息体/proto, 1: 系统提示词/gzip, 3: 错误标记/gzip
+	// 00000011 第一个字节是占位符，应该是用来代表消息类型的 假定 0: 消息体/proto, 1: 系统提示词/gzip, 2、3: 错误标记/gzip
 	// 00000000 00000000 00000010 11011000 4个字节描述包体大小
 	scanner = bufio.NewScanner(body)
 	var (
@@ -248,9 +248,14 @@ func newScanner(body io.ReadCloser) (scanner *bufio.Scanner) {
 				return setup, []byte("event: error"), err
 			}
 
+			if magic == 2 { // 内部异常信息
+				return setup, []byte("event: error"), err
+			}
+
 			if magic == 1 { // 系统提示词标记？
 				return setup, []byte("event: system"), err
 			}
+
 			// magic == 0
 			return setup, []byte("event: message"), err
 		}

relay/llm/cursor/toolcall.go

@@ -25,7 +25,7 @@ func toolChoice(ctx *gin.Context, proxies, cookie string, completion model.Compl
 				"content": message,
 			},
 		}
-		messageBuffer, err := convertRequest(completion)
+		messageBuffer, err := convertRequest(ctx, completion)
 		if err != nil {
 			return "", err
 		}