feat: Eino adapter 和 callback 迁移到 trace 包（Phase 6.1）

- 移除 adapter.go 中的 ctxKeySessionID 定义
- 移除 callback.go 中的 ctxKeyRequestID 定义
- 统一使用 trace.WithSessionID/WithRequestID
- adapter.go 使用 trace.FromContext 替换 logger.Log
- callback.go 使用 trace.FromContext
- 移除双重日志，SetActiveRequest 失败直接返回错误
- 更新测试文件导入 trace 包

backend/internal/eino/adapter.go

@@ -8,20 +8,12 @@ import (
 
 	"github.com/cloudwego/eino/compose"
 
-	"github.com/hhs/camtalk/internal/logger"
 	"github.com/hhs/camtalk/internal/models"
 	"github.com/hhs/camtalk/internal/orchestrator"
 	"github.com/hhs/camtalk/internal/session"
+	"github.com/hhs/camtalk/internal/trace"
 )
 
-// ctxKeySessionID sessionID 的 context key。
-type ctxKeySessionID struct{}
-
-// WithSessionID 将 sessionID 注入 context。
-func WithSessionID(ctx context.Context, sessionID string) context.Context {
-	return context.WithValue(ctx, ctxKeySessionID{}, sessionID)
-}
-
 // EinoOrchestrator 实现 orchestrator.Orchestrator 接口。
 // 将 Eino Graph 包装为现有接口，WS Handler 几乎不用改。
 type EinoOrchestrator struct {
@@ -48,19 +40,19 @@ func (e *EinoOrchestrator) ProcessQuery(
 	req models.WsQuery,
 	sender orchestrator.Sender,
 ) error {
-	log := logger.Log
+	log := trace.FromContext(ctx)
 	startTime := time.Now()
 
 	// 1. 设置活跃请求
 	if err := e.sessionMgr.SetActiveRequest(ctx, sessionID, req.RequestID); err != nil {
-		log.Errorw("设置活跃请求失败", "error", err)
+		return err
 	}
 	defer e.sessionMgr.ClearActiveRequest(ctx, sessionID)
 
 	// 2. 获取会话配置
 	sess, err := e.sessionMgr.Get(ctx, sessionID)
 	if err != nil {
-		log.Errorw("获取会话失败", "error", err)
+		log.Errorw("get session failed", "error", err)
 		sender.SendError(models.WsError{
 			Type:      "error",
 			RequestID: req.RequestID,
@@ -75,7 +67,7 @@ func (e *EinoOrchestrator) ProcessQuery(
 	if req.Text == "" && req.Audio != "" {
 		audioData, err = base64.StdEncoding.DecodeString(req.Audio)
 		if err != nil {
-			log.Errorw("音频解码失败", "error", err)
+			log.Errorw("audio decode failed", "error", err)
 			sender.SendError(models.WsError{
 				Type:      "error",
 				RequestID: req.RequestID,
@@ -90,7 +82,7 @@ func (e *EinoOrchestrator) ProcessQuery(
 	if req.Image != "" {
 		imageData, err = base64.StdEncoding.DecodeString(req.Image)
 		if err != nil {
-			log.Errorw("图片解码失败", "error", err)
+			log.Errorw("image decode failed", "error", err)
 			sender.SendError(models.WsError{
 				Type:      "error",
 				RequestID: req.RequestID,
@@ -107,7 +99,7 @@ func (e *EinoOrchestrator) ProcessQuery(
 	// 5. 注入 context 值（供 Callback 和 Lambda 节点使用）
 	ctx = WithSender(ctx, sender)
 	ctx = WithRequestID(ctx, req.RequestID)
-	ctx = WithSessionID(ctx, sessionID)
+	ctx = trace.WithSessionID(ctx, sessionID)
 	ctx = WithStartTime(ctx, startTime)
 
 	// 创建 State 并从 input 复制元数据
@@ -125,7 +117,7 @@ func (e *EinoOrchestrator) ProcessQuery(
 	// 6. 调用 Graph（Stream 模式 + 运行时 Callback）
 	streamReader, err := e.graph.Runnable.Stream(ctx, input, e.callbacks)
 	if err != nil {
-		log.Errorw("Graph Stream 启动失败", "error", err)
+		log.Errorw("graph stream start failed", "error", err)
 		sender.SendError(models.WsError{
 			Type:      "error",
 			RequestID: req.RequestID,
@@ -143,7 +135,7 @@ func (e *EinoOrchestrator) ProcessQuery(
 			if err == io.EOF {
 				break
 			}
-			log.Errorw("Graph Stream 消费错误", "error", err)
+			log.Errorw("graph stream consume error", "error", err)
 			break
 		}
 		output = o
@@ -159,7 +151,7 @@ func (e *EinoOrchestrator) ProcessQuery(
 			Role:    "user",
 			Content: userText,
 		}); err != nil {
-			log.Errorw("追加用户消息到历史失败", "session", sessionID, "error", err)
+			log.Errorw("append user message failed", "error", err)
 		}
 	}
 
@@ -169,15 +161,12 @@ func (e *EinoOrchestrator) ProcessQuery(
 			Role:    "assistant",
 			Content: output.FullResponse,
 		}); err != nil {
-			log.Errorw("追加助手消息到历史失败", "session", sessionID, "error", err)
+			log.Errorw("append assistant message failed", "error", err)
 		}
 	}
 
 	latency := time.Since(startTime).Milliseconds()
-	log.Infow("Eino 编排完成",
-		"request_id", req.RequestID,
-		"latency_ms", latency,
-		"session_id", sessionID)
+	log.Infow("eino pipeline completed", "latency_ms", latency)
 
 	return nil
 }