fix: resolve cherry-pick compilation and test issues

- Add int64(0) param to SelectAccountWithLoadAwareness callers (signature change from channel scheduling refactor)
- Add UsageMapHook type and struct field to StreamingProcessor
- Revert Claude Max cache billing code to upstream/main (not part of channel feature)
- Revert credits overages logic to upstream/main (non-channel change)
- Remove Instructions field reference (non-channel OpenAI feature)
- Restore sora_client_handler_test.go from upstream + add channel service nil params

backend/internal/handler/gateway_handler.go

@@ -295,7 +295,7 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 		}
 
 		for {
-			selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionKey, reqModel, fs.FailedAccountIDs, "") // Gemini 不使用会话限制
+			selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionKey, reqModel, fs.FailedAccountIDs, "", int64(0)) // Gemini 不使用会话限制
 			if err != nil {
 				if len(fs.FailedAccountIDs) == 0 {
 					h.handleStreamingAwareError(c, http.StatusServiceUnavailable, "api_error", "No available accounts: "+err.Error(), streamStarted)
@@ -518,7 +518,7 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 
 		for {
 			// 选择支持该模型的账号
-			selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), currentAPIKey.GroupID, sessionKey, reqModel, fs.FailedAccountIDs, parsedReq.MetadataUserID)
+			selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), currentAPIKey.GroupID, sessionKey, reqModel, fs.FailedAccountIDs, parsedReq.MetadataUserID, int64(0))
 			if err != nil {
 				if len(fs.FailedAccountIDs) == 0 {
 					h.handleStreamingAwareError(c, http.StatusServiceUnavailable, "api_error", "No available accounts: "+err.Error(), streamStarted)

backend/internal/handler/gateway_handler_chat_completions.go

@@ -157,7 +157,7 @@ func (h *GatewayHandler) ChatCompletions(c *gin.Context) {
 	fs := NewFailoverState(h.maxAccountSwitches, false)
 
 	for {
-		selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionHash, reqModel, fs.FailedAccountIDs, "")
+		selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionHash, reqModel, fs.FailedAccountIDs, "", int64(0))
 		if err != nil {
 			if len(fs.FailedAccountIDs) == 0 {
 				h.chatCompletionsErrorResponse(c, http.StatusServiceUnavailable, "api_error", "No available accounts: "+err.Error())

backend/internal/handler/gateway_handler_responses.go

@@ -162,7 +162,7 @@ func (h *GatewayHandler) Responses(c *gin.Context) {
 	fs := NewFailoverState(h.maxAccountSwitches, false)
 
 	for {
-		selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionHash, reqModel, fs.FailedAccountIDs, "")
+		selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionHash, reqModel, fs.FailedAccountIDs, "", int64(0))
 		if err != nil {
 			if len(fs.FailedAccountIDs) == 0 {
 				h.responsesErrorResponse(c, http.StatusServiceUnavailable, "api_error", "No available accounts: "+err.Error())

backend/internal/handler/gemini_v1beta_handler.go

@@ -360,7 +360,7 @@ func (h *GatewayHandler) GeminiV1BetaModels(c *gin.Context) {
 	}
 
 	for {
-		selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionKey, modelName, fs.FailedAccountIDs, "") // Gemini 不使用会话限制
+		selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionKey, modelName, fs.FailedAccountIDs, "", int64(0)) // Gemini 不使用会话限制
 		if err != nil {
 			if len(fs.FailedAccountIDs) == 0 {
 				googleError(c, http.StatusServiceUnavailable, "No available Gemini accounts: "+err.Error())

backend/internal/handler/sora_client_handler_test.go

@@ -125,13 +125,6 @@ func (r *stubSoraGenRepo) CountByUserAndStatus(_ context.Context, _ int64, _ []s
 	return r.countValue, nil
 }
 
-func (r *stubSoraGenRepo) CountByStorageType(_ context.Context, _ string, _ []string) (int64, error) {
-	if r.countErr != nil {
-		return 0, r.countErr
-	}
-	return r.countValue, nil
-}
-
 // ==================== 辅助函数 ====================
 
 func newTestSoraClientHandler(repo *stubSoraGenRepo) *SoraClientHandler {
@@ -1664,8 +1657,8 @@ func TestStoreMediaWithDegradation_S3SuccessSingleURL(t *testing.T) {
 	fakeS3 := newFakeS3Server("ok")
 	defer fakeS3.Close()
 
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
-	h := &SoraClientHandler{objectStorage: objectStorage}
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
+	h := &SoraClientHandler{s3Storage: s3Storage}
 
 	storedURL, storedURLs, storageType, s3Keys, fileSize := h.storeMediaWithDegradation(
 		context.Background(), 1, "video", sourceServer.URL+"/v.mp4", nil,
@@ -1686,8 +1679,8 @@ func TestStoreMediaWithDegradation_S3SuccessMultiURL(t *testing.T) {
 	fakeS3 := newFakeS3Server("ok")
 	defer fakeS3.Close()
 
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
-	h := &SoraClientHandler{objectStorage: objectStorage}
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
+	h := &SoraClientHandler{s3Storage: s3Storage}
 
 	urls := []string{sourceServer.URL + "/a.mp4", sourceServer.URL + "/b.mp4"}
 	storedURL, storedURLs, storageType, s3Keys, fileSize := h.storeMediaWithDegradation(
@@ -1711,8 +1704,8 @@ func TestStoreMediaWithDegradation_S3DownloadFails(t *testing.T) {
 	}))
 	defer badSource.Close()
 
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
-	h := &SoraClientHandler{objectStorage: objectStorage}
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
+	h := &SoraClientHandler{s3Storage: s3Storage}
 
 	_, _, storageType, _, _ := h.storeMediaWithDegradation(
 		context.Background(), 1, "video", badSource.URL+"/missing.mp4", nil,
@@ -1726,8 +1719,8 @@ func TestStoreMediaWithDegradation_S3FailsSingleURL(t *testing.T) {
 	fakeS3 := newFakeS3Server("fail")
 	defer fakeS3.Close()
 
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
-	h := &SoraClientHandler{objectStorage: objectStorage}
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
+	h := &SoraClientHandler{s3Storage: s3Storage}
 
 	_, _, storageType, s3Keys, _ := h.storeMediaWithDegradation(
 		context.Background(), 1, "video", sourceServer.URL+"/v.mp4", nil,
@@ -1743,8 +1736,8 @@ func TestStoreMediaWithDegradation_S3PartialFailureCleanup(t *testing.T) {
 	fakeS3 := newFakeS3Server("fail-second")
 	defer fakeS3.Close()
 
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
-	h := &SoraClientHandler{objectStorage: objectStorage}
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
+	h := &SoraClientHandler{s3Storage: s3Storage}
 
 	urls := []string{sourceServer.URL + "/a.mp4", sourceServer.URL + "/b.mp4"}
 	_, _, storageType, s3Keys, _ := h.storeMediaWithDegradation(
@@ -1815,7 +1808,7 @@ func TestStoreMediaWithDegradation_S3FailsFallbackToLocal(t *testing.T) {
 	fakeS3 := newFakeS3Server("fail")
 	defer fakeS3.Close()
 
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	cfg := &config.Config{
 		Sora: config.SoraConfig{
 			Storage: config.SoraStorageConfig{
@@ -1828,8 +1821,8 @@ func TestStoreMediaWithDegradation_S3FailsFallbackToLocal(t *testing.T) {
 	}
 	mediaStorage := service.NewSoraMediaStorage(cfg)
 	h := &SoraClientHandler{
-		objectStorage: objectStorage,
-		mediaStorage:  mediaStorage,
+		s3Storage:    s3Storage,
+		mediaStorage: mediaStorage,
 	}
 
 	_, _, storageType, _, _ := h.storeMediaWithDegradation(
@@ -1853,9 +1846,9 @@ func TestSaveToStorage_S3EnabledButUploadFails(t *testing.T) {
 		StorageType: "upstream",
 		MediaURL:    sourceServer.URL + "/v.mp4",
 	}
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -1879,9 +1872,9 @@ func TestSaveToStorage_UpstreamURLExpired(t *testing.T) {
 		StorageType: "upstream",
 		MediaURL:    expiredServer.URL + "/v.mp4",
 	}
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -1903,9 +1896,9 @@ func TestSaveToStorage_S3EnabledUploadSuccess(t *testing.T) {
 		StorageType: "upstream",
 		MediaURL:    sourceServer.URL + "/v.mp4",
 	}
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -1913,7 +1906,7 @@ func TestSaveToStorage_S3EnabledUploadSuccess(t *testing.T) {
 	require.Equal(t, http.StatusOK, rec.Code)
 	resp := parseResponse(t, rec)
 	data := resp["data"].(map[string]any)
-	require.Contains(t, data["message"], "云存储")
+	require.Contains(t, data["message"], "S3")
 	require.NotEmpty(t, data["object_key"])
 	// 验证记录已更新为 S3 存储
 	require.Equal(t, service.SoraStorageTypeS3, repo.gens[1].StorageType)
@@ -1935,9 +1928,9 @@ func TestSaveToStorage_S3EnabledUploadSuccess_MultiMediaURLs(t *testing.T) {
 			sourceServer.URL + "/v2.mp4",
 		},
 	}
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -1963,7 +1956,7 @@ func TestSaveToStorage_S3EnabledUploadSuccessWithQuota(t *testing.T) {
 		StorageType: "upstream",
 		MediaURL:    sourceServer.URL + "/v.mp4",
 	}
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
 
 	userRepo := newStubUserRepoForHandler()
@@ -1973,7 +1966,7 @@ func TestSaveToStorage_S3EnabledUploadSuccessWithQuota(t *testing.T) {
 		SoraStorageUsedBytes:  0,
 	}
 	quotaService := service.NewSoraQuotaService(userRepo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage, quotaService: quotaService}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage, quotaService: quotaService}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -1997,9 +1990,9 @@ func TestSaveToStorage_S3UploadSuccessMarkCompletedFails(t *testing.T) {
 	}
 	// S3 上传成功后，MarkCompleted 会调用 repo.Update → 失败
 	repo.updateErr = fmt.Errorf("db error")
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -2014,8 +2007,8 @@ func TestGetStorageStatus_S3EnabledNotHealthy(t *testing.T) {
 	fakeS3 := newFakeS3Server("fail")
 	defer fakeS3.Close()
 
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
-	h := &SoraClientHandler{objectStorage: objectStorage}
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
+	h := &SoraClientHandler{s3Storage: s3Storage}
 
 	c, rec := makeGinContext("GET", "/api/v1/sora/storage-status", "", 0)
 	h.GetStorageStatus(c)
@@ -2030,8 +2023,8 @@ func TestGetStorageStatus_S3EnabledHealthy(t *testing.T) {
 	fakeS3 := newFakeS3Server("ok")
 	defer fakeS3.Close()
 
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
-	h := &SoraClientHandler{objectStorage: objectStorage}
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
+	h := &SoraClientHandler{s3Storage: s3Storage}
 
 	c, rec := makeGinContext("GET", "/api/v1/sora/storage-status", "", 0)
 	h.GetStorageStatus(c)
@@ -2460,7 +2453,7 @@ func TestProcessGeneration_FullSuccessWithS3(t *testing.T) {
 		},
 	}
 	soraGatewayService := newMinimalSoraGatewayService(soraClient)
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 
 	userRepo := newStubUserRepoForHandler()
 	userRepo.users[1] = &service.User{
@@ -2472,7 +2465,7 @@ func TestProcessGeneration_FullSuccessWithS3(t *testing.T) {
 		genService:         genService,
 		gatewayService:     gatewayService,
 		soraGatewayService: soraGatewayService,
-		objectStorage:      objectStorage,
+		s3Storage:          s3Storage,
 		quotaService:       quotaService,
 	}
 
@@ -2522,7 +2515,7 @@ func TestProcessGeneration_MarkCompletedFails(t *testing.T) {
 // ==================== cleanupStoredMedia 直接测试 ====================
 
 func TestCleanupStoredMedia_S3Path(t *testing.T) {
-	// S3 清理路径：objectStorage 为 nil 时不 panic
+	// S3 清理路径：s3Storage 为 nil 时不 panic
 	h := &SoraClientHandler{}
 	// 不应 panic
 	h.cleanupStoredMedia(context.Background(), service.SoraStorageTypeS3, []string{"key1"}, nil)
@@ -2969,7 +2962,7 @@ func TestSaveToStorage_QuotaExceeded(t *testing.T) {
 		StorageType: "upstream",
 		MediaURL:    sourceServer.URL + "/v.mp4",
 	}
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
 
 	// 用户配额已满
@@ -2980,7 +2973,7 @@ func TestSaveToStorage_QuotaExceeded(t *testing.T) {
 		SoraStorageUsedBytes:  10,
 	}
 	quotaService := service.NewSoraQuotaService(userRepo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage, quotaService: quotaService}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage, quotaService: quotaService}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -3002,13 +2995,13 @@ func TestSaveToStorage_QuotaNonQuotaError(t *testing.T) {
 		StorageType: "upstream",
 		MediaURL:    sourceServer.URL + "/v.mp4",
 	}
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
 
 	// 用户不存在 → GetByID 失败 → AddUsage 返回普通 error
 	userRepo := newStubUserRepoForHandler()
 	quotaService := service.NewSoraQuotaService(userRepo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage, quotaService: quotaService}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage, quotaService: quotaService}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -3029,9 +3022,9 @@ func TestSaveToStorage_EmptyMediaURLs(t *testing.T) {
 		MediaURL:    "",
 		MediaURLs:   []string{},
 	}
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -3056,9 +3049,9 @@ func TestSaveToStorage_MultiURL_SecondUploadFails(t *testing.T) {
 		MediaURL:    sourceServer.URL + "/v1.mp4",
 		MediaURLs:   []string{sourceServer.URL + "/v1.mp4", sourceServer.URL + "/v2.mp4"},
 	}
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -3081,7 +3074,7 @@ func TestSaveToStorage_MarkCompletedFailsWithQuotaRollback(t *testing.T) {
 		MediaURL:    sourceServer.URL + "/v.mp4",
 	}
 	repo.updateErr = fmt.Errorf("db error")
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
 	genService := service.NewSoraGenerationService(repo, nil, nil)
 
 	userRepo := newStubUserRepoForHandler()
@@ -3091,7 +3084,7 @@ func TestSaveToStorage_MarkCompletedFailsWithQuotaRollback(t *testing.T) {
 		SoraStorageUsedBytes:  0,
 	}
 	quotaService := service.NewSoraQuotaService(userRepo, nil, nil)
-	h := &SoraClientHandler{genService: genService, objectStorage: objectStorage, quotaService: quotaService}
+	h := &SoraClientHandler{genService: genService, s3Storage: s3Storage, quotaService: quotaService}
 
 	c, rec := makeGinContext("POST", "/api/v1/sora/generations/1/save", "", 1)
 	c.Params = gin.Params{{Key: "id", Value: "1"}}
@@ -3104,8 +3097,8 @@ func TestSaveToStorage_MarkCompletedFailsWithQuotaRollback(t *testing.T) {
 func TestCleanupStoredMedia_WithS3Storage_ActualDelete(t *testing.T) {
 	fakeS3 := newFakeS3Server("ok")
 	defer fakeS3.Close()
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
-	h := &SoraClientHandler{objectStorage: objectStorage}
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
+	h := &SoraClientHandler{s3Storage: s3Storage}
 
 	h.cleanupStoredMedia(context.Background(), service.SoraStorageTypeS3, []string{"key1", "key2"}, nil)
 }
@@ -3113,8 +3106,8 @@ func TestCleanupStoredMedia_WithS3Storage_ActualDelete(t *testing.T) {
 func TestCleanupStoredMedia_S3DeleteFails_LogOnly(t *testing.T) {
 	fakeS3 := newFakeS3Server("fail")
 	defer fakeS3.Close()
-	objectStorage := newS3StorageForHandler(fakeS3.URL)
-	h := &SoraClientHandler{objectStorage: objectStorage}
+	s3Storage := newS3StorageForHandler(fakeS3.URL)
+	h := &SoraClientHandler{s3Storage: s3Storage}
 
 	h.cleanupStoredMedia(context.Background(), service.SoraStorageTypeS3, []string{"key1"}, nil)
 }

backend/internal/handler/sora_gateway_handler.go

@@ -228,7 +228,7 @@ func (h *SoraGatewayHandler) ChatCompletions(c *gin.Context) {
 	var lastFailoverHeaders http.Header
 
 	for {
-		selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionHash, reqModel, failedAccountIDs, "")
+		selection, err := h.gatewayService.SelectAccountWithLoadAwareness(c.Request.Context(), apiKey.GroupID, sessionHash, reqModel, failedAccountIDs, "", int64(0))
 		if err != nil {
 			reqLog.Warn("sora.account_select_failed",
 				zap.Error(err),

backend/internal/pkg/antigravity/stream_transformer.go

@@ -18,6 +18,9 @@ const (
 	BlockTypeFunction
 )
 
+// UsageMapHook is a callback that can modify usage data before it's emitted in SSE events.
+type UsageMapHook func(usageMap map[string]any)
+
 // StreamingProcessor 流式响应处理器
 type StreamingProcessor struct {
 	blockType         BlockType
@@ -30,6 +33,7 @@ type StreamingProcessor struct {
 	originalModel     string
 	webSearchQueries  []string
 	groundingChunks   []GeminiGroundingChunk
+	usageMapHook      UsageMapHook
 
 	// 累计 usage
 	inputTokens       int

backend/internal/pkg/apicompat/chatcompletions_to_responses.go

@@ -27,13 +27,12 @@ func ChatCompletionsToResponses(req *ChatCompletionsRequest) (*ResponsesRequest,
 	}
 
 	out := &ResponsesRequest{
-		Model:        req.Model,
-		Instructions: req.Instructions,
-		Input:        inputJSON,
-		Temperature:  req.Temperature,
-		TopP:         req.TopP,
-		Stream:       true, // upstream always streams
-		Include:      []string{"reasoning.encrypted_content"},
+		Model:       req.Model,
+		Input:       inputJSON,
+		Temperature: req.Temperature,
+		TopP:        req.TopP,
+		Stream:      true, // upstream always streams
+		Include:     []string{"reasoning.encrypted_content"},
 		ServiceTier:  req.ServiceTier,
 	}
 

backend/internal/service/antigravity_credits_overages.go

@@ -278,13 +278,9 @@ func resolveCreditsOveragesModelKey(ctx context.Context, account *Account, upstr
 }
 
 // shouldMarkCreditsExhausted 判断一次 credits 请求失败是否应标记为 credits 耗尽。
-// 此函数在积分注入后失败时调用（预检查注入 + attemptCreditsOveragesRetry 两条路径）。
-//   - 429 + 非单模型限流：积分注入后仍 429 → 标记耗尽。
-//   - 429 + 单模型限流（"exhausted your capacity on this model"）：该模型免费配额用完，
-//     积分注入对此无效，但账号积分对其他模型可能仍可用 → 不标记积分耗尽。
-//   - 403 等其他 4xx：检查 body 是否包含积分不足的关键词。
-//
-// clearCreditsExhausted 会在后续成功时自动清除。
+// 注意：不再检查 isURLLevelRateLimit。此函数仅在积分重试失败后调用，
+// 如果注入 enabledCreditTypes 后仍返回 "Resource has been exhausted"，
+// 说明积分也已耗尽，应该标记。clearCreditsExhausted 会在后续成功时自动清除。
 func shouldMarkCreditsExhausted(resp *http.Response, respBody []byte, reqErr error) bool {
 	if reqErr != nil || resp == nil {
 		return false
@@ -292,16 +288,10 @@ func shouldMarkCreditsExhausted(resp *http.Response, respBody []byte, reqErr err
 	if resp.StatusCode >= 500 || resp.StatusCode == http.StatusRequestTimeout {
 		return false
 	}
-	bodyLower := strings.ToLower(string(respBody))
-	// 积分注入后仍 429
-	if resp.StatusCode == http.StatusTooManyRequests {
-		// 单模型配额耗尽：积分注入对此无效，不标记整个账号积分耗尽
-		if strings.Contains(bodyLower, "exhausted your capacity on this model") {
-			return false
-		}
-		return true
+	if info := parseAntigravitySmartRetryInfo(respBody); info != nil {
+		return false
 	}
-	// 其他 4xx：关键词匹配（如 403 + "Insufficient credits"）
+	bodyLower := strings.ToLower(string(respBody))
 	for _, keyword := range creditsExhaustedKeywords {
 		if strings.Contains(bodyLower, keyword) {
 			return true

backend/internal/service/antigravity_credits_overages_test.go

@@ -418,13 +418,7 @@ func TestShouldMarkCreditsExhausted(t *testing.T) {
 		require.True(t, shouldMarkCreditsExhausted(resp, body, nil))
 	})
 
-	t.Run("单模型配额耗尽不标记（积分对此无效）", func(t *testing.T) {
-		resp := &http.Response{StatusCode: http.StatusTooManyRequests}
-		body := []byte(`{"error":{"code":429,"message":"You have exhausted your capacity on this model. Your quota will reset after 146h11m17s.","status":"RESOURCE_EXHAUSTED"}}`)
-		require.False(t, shouldMarkCreditsExhausted(resp, body, nil))
-	})
-
-	t.Run("429 结构化限流也标记（积分注入后仍 429 即为耗尽）", func(t *testing.T) {
+	t.Run("结构化限流不标记", func(t *testing.T) {
 		resp := &http.Response{StatusCode: http.StatusTooManyRequests}
 		body := []byte(`{"error":{"status":"RESOURCE_EXHAUSTED","details":[{"@type":"type.googleapis.com/google.rpc.ErrorInfo","reason":"RATE_LIMIT_EXCEEDED"},{"@type":"type.googleapis.com/google.rpc.RetryInfo","retryDelay":"0.5s"}]}}`)
 		require.False(t, shouldMarkCreditsExhausted(resp, body, nil))

backend/internal/service/gateway_hotpath_optimization_test.go

@@ -732,7 +732,7 @@ func TestSelectAccountWithLoadAwareness_StickyReadReuse(t *testing.T) {
 			modelsListCacheTTL: time.Minute,
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(baseCtx, nil, "sess-hash", "", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(baseCtx, nil, "sess-hash", "", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -754,7 +754,7 @@ func TestSelectAccountWithLoadAwareness_StickyReadReuse(t *testing.T) {
 
 		ctx := context.WithValue(baseCtx, ctxkey.PrefetchedStickyAccountID, account.ID)
 		ctx = context.WithValue(ctx, ctxkey.PrefetchedStickyGroupID, int64(0))
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "sess-hash", "", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "sess-hash", "", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -776,7 +776,7 @@ func TestSelectAccountWithLoadAwareness_StickyReadReuse(t *testing.T) {
 
 		ctx := context.WithValue(baseCtx, ctxkey.PrefetchedStickyAccountID, int64(999))
 		ctx = context.WithValue(ctx, ctxkey.PrefetchedStickyGroupID, int64(77))
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "sess-hash", "", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "sess-hash", "", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)

backend/internal/service/gateway_multiplatform_test.go

@@ -2031,7 +2031,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: nil, // No concurrency service
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2084,7 +2084,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: nil, // legacy path
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, sessionHash, "claude-b", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, sessionHash, "claude-b", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2116,7 +2116,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: nil,
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2148,7 +2148,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 		}
 
 		excludedIDs := map[int64]struct{}{1: {}}
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", excludedIDs, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", excludedIDs, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2182,7 +2182,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "sticky", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "sticky", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2218,7 +2218,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "sticky", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "sticky", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2259,7 +2259,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(testCtx, nil, "sticky", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(testCtx, nil, "sticky", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2287,7 +2287,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: nil,
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.Error(t, err)
 		require.Nil(t, result)
 		require.ErrorIs(t, err, ErrNoAvailableAccounts)
@@ -2319,7 +2319,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: nil,
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2352,7 +2352,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: nil,
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2390,7 +2390,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "sticky", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "sticky", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.WaitPlan)
@@ -2426,7 +2426,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "legacy", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "legacy", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2485,7 +2485,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, sessionHash, "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, sessionHash, "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.WaitPlan)
@@ -2539,7 +2539,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, sessionHash, "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, sessionHash, "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2593,7 +2593,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, sessionHash, "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, sessionHash, "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2651,7 +2651,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "route", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "route", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2709,7 +2709,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "route-full", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "route-full", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.WaitPlan)
@@ -2767,7 +2767,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "fallback", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "fallback", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2804,7 +2804,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.WaitPlan)
@@ -2856,7 +2856,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "gemini", "gemini-2.5-pro", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "gemini", "gemini-2.5-pro", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2934,7 +2934,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 		}
 
 		excluded := map[int64]struct{}{1: {}}
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "", "claude-3-5-sonnet-20241022", excluded, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "", "claude-3-5-sonnet-20241022", excluded, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -2988,7 +2988,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: nil,
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "", "gemini-2.5-pro", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "", "gemini-2.5-pro", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)
@@ -3021,7 +3021,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: nil,
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, &groupID, "", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.Error(t, err)
 		require.Nil(t, result)
 		require.ErrorIs(t, err, ErrClaudeCodeOnly)
@@ -3059,7 +3059,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "wait", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "wait", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.WaitPlan)
@@ -3097,7 +3097,7 @@ func TestGatewayService_SelectAccountWithLoadAwareness(t *testing.T) {
 			concurrencyService: NewConcurrencyService(concurrencyCache),
 		}
 
-		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "missing-load", "claude-3-5-sonnet-20241022", nil, "")
+		result, err := svc.SelectAccountWithLoadAwareness(ctx, nil, "missing-load", "claude-3-5-sonnet-20241022", nil, "", int64(0))
 		require.NoError(t, err)
 		require.NotNil(t, result)
 		require.NotNil(t, result.Account)

backend/internal/service/gateway_service.go

@@ -7782,7 +7782,6 @@ func (s *GatewayService) RecordUsage(ctx context.Context, input *RecordUsageInpu
 		APIKeyService:      input.APIKeyService,
 		ChannelUsageFields: input.ChannelUsageFields,
 	}, &recordUsageOpts{
-		ParsedRequest:    input.ParsedRequest,
 		EnableClaudePath: true,
 	})
 }
@@ -7867,21 +7866,9 @@ func (s *GatewayService) recordUsageCore(ctx context.Context, input *recordUsage
 		result.Usage.InputTokens = 0
 	}
 
-	// Claude Max cache billing policy（仅 Claude 路径启用）
-	cacheTTLOverridden := false
-	simulatedClaudeMax := false
-	if opts.EnableClaudePath {
-		var apiKeyGroup *Group
-		if apiKey != nil {
-			apiKeyGroup = apiKey.Group
-		}
-		claudeMaxOutcome := applyClaudeMaxCacheBillingPolicyToUsage(&result.Usage, opts.ParsedRequest, apiKeyGroup, result.Model, account.ID)
-		simulatedClaudeMax = claudeMaxOutcome.Simulated ||
-			(shouldApplyClaudeMaxBillingRulesForUsage(apiKeyGroup, result.Model, opts.ParsedRequest) && hasCacheCreationTokens(result.Usage))
-	}
-
 	// Cache TTL Override: 确保计费时 token 分类与账号设置一致
-	if account.IsCacheTTLOverrideEnabled() && !simulatedClaudeMax {
+	cacheTTLOverridden := false
+	if account.IsCacheTTLOverrideEnabled() {
 		applyCacheTTLOverride(&result.Usage, account.GetCacheTTLOverrideTarget())
 		cacheTTLOverridden = (result.Usage.CacheCreation5mTokens + result.Usage.CacheCreation1hTokens) > 0
 	}

backend/internal/service/ops_retry.go

@@ -519,7 +519,7 @@ func (s *OpsService) selectAccountForRetry(ctx context.Context, reqType opsRetry
 		if s.gatewayService == nil {
 			return nil, fmt.Errorf("gateway service not available")
 		}
-		return s.gatewayService.SelectAccountWithLoadAwareness(ctx, groupID, "", model, excludedIDs, "") // 重试不使用会话限制
+		return s.gatewayService.SelectAccountWithLoadAwareness(ctx, groupID, "", model, excludedIDs, "", int64(0)) // 重试不使用会话限制
 	default:
 		return nil, fmt.Errorf("unsupported retry type: %s", reqType)
 	}