Merge pull request #978 from touwaeriol/worktree-fix/group

fix: filter soft-deleted users in group rate multiplier query

.github/workflows/backend-ci.yml

@@ -17,6 +17,7 @@ jobs:
           go-version-file: backend/go.mod
           check-latest: false
           cache: true
+          cache-dependency-path: backend/go.sum
       - name: Verify Go version
         run: |
           go version | grep -q 'go1.26.1'
@@ -36,6 +37,7 @@ jobs:
           go-version-file: backend/go.mod
           check-latest: false
           cache: true
+          cache-dependency-path: backend/go.sum
       - name: Verify Go version
         run: |
           go version | grep -q 'go1.26.1'

.gitignore

@@ -78,6 +78,7 @@ Desktop.ini
 # ===================
 tmp/
 temp/
+logs/
 *.tmp
 *.temp
 *.log
@@ -128,8 +129,15 @@ deploy/docker-compose.override.yml
 vite.config.js
 docs/*
 .serena/
+
+# ===================
+# 压测工具
+# ===================
+tools/loadtest/
+# Antigravity Manager
+Antigravity-Manager/
+antigravity_projectid_fix.patch
 .codex/
 frontend/coverage/
 aicodex
 output/
-

README.md

@@ -39,16 +39,6 @@ Sub2API is an AI API gateway platform designed to distribute and manage API quot
 - **Concurrency Control** - Per-user and per-account concurrency limits
 - **Rate Limiting** - Configurable request and token rate limits
 - **Admin Dashboard** - Web interface for monitoring and management
-- **External System Integration** - Embed external systems (e.g. payment, ticketing) via iframe to extend the admin dashboard
-
-## Ecosystem
-
-Community projects that extend or integrate with Sub2API:
-
-| Project | Description | Features |
-|---------|-------------|----------|
-| [Sub2ApiPay](https://github.com/touwaeriol/sub2apipay) | Self-service payment system | Self-service top-up and subscription purchase; supports YiPay protocol, WeChat Pay, Alipay, Stripe; embeddable via iframe |
-| [sub2api-mobile](https://github.com/ckken/sub2api-mobile) | Mobile admin console | Cross-platform app (iOS/Android/Web) for user management, account management, monitoring dashboard, and multi-backend switching; built with Expo + React Native |
 
 ## Tech Stack
 

README_CN.md

@@ -39,16 +39,6 @@ Sub2API 是一个 AI API 网关平台，用于分发和管理 AI 产品订阅（
 - **并发控制** - 用户级和账号级并发限制
 - **速率限制** - 可配置的请求和 Token 速率限制
 - **管理后台** - Web 界面进行监控和管理
-- **外部系统集成** - 支持通过 iframe 嵌入外部系统（如支付、工单等），扩展管理后台功能
-
-## 生态项目
-
-围绕 Sub2API 的社区扩展与集成项目：
-
-| 项目 | 说明 | 功能 |
-|------|------|------|
-| [Sub2ApiPay](https://github.com/touwaeriol/sub2apipay) | 自助支付系统 | 用户自助充值、自助订阅购买；兼容易支付协议、微信官方支付、支付宝官方支付、Stripe；支持 iframe 嵌入管理后台 |
-| [sub2api-mobile](https://github.com/ckken/sub2api-mobile) | 移动端管理控制台 | 跨平台应用（iOS/Android/Web），支持用户管理、账号管理、监控看板、多后端切换；基于 Expo + React Native 构建 |
 
 ## 技术栈
 

backend/cmd/server/VERSION

@@ -1 +1 @@
-0.1.88
+0.1.96.1

backend/cmd/server/wire.go

@@ -41,9 +41,6 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 		// Server layer ProviderSet
 		server.ProviderSet,
 
-		// Privacy client factory for OpenAI training opt-out
-		providePrivacyClientFactory,
-
 		// BuildInfo provider
 		provideServiceBuildInfo,
 
@@ -56,10 +53,6 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	return nil, nil
 }
 
-func providePrivacyClientFactory() service.PrivacyClientFactory {
-	return repository.CreatePrivacyReqClient
-}
-
 func provideServiceBuildInfo(buildInfo handler.BuildInfo) service.BuildInfo {
 	return service.BuildInfo{
 		Version:   buildInfo.Version,

backend/cmd/server/wire_gen.go

@@ -81,7 +81,6 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	userHandler := handler.NewUserHandler(userService)
 	apiKeyHandler := handler.NewAPIKeyHandler(apiKeyService)
 	usageLogRepository := repository.NewUsageLogRepository(client, db)
-	usageBillingRepository := repository.NewUsageBillingRepository(client, db)
 	usageService := service.NewUsageService(usageLogRepository, userRepository, client, apiKeyAuthCacheInvalidator)
 	usageHandler := handler.NewUsageHandler(usageService, apiKeyService)
 	redeemHandler := handler.NewRedeemHandler(redeemService)
@@ -105,8 +104,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	proxyRepository := repository.NewProxyRepository(client, db)
 	proxyExitInfoProber := repository.NewProxyExitInfoProber(configConfig)
 	proxyLatencyCache := repository.NewProxyLatencyCache(redisClient)
-	privacyClientFactory := providePrivacyClientFactory()
-	adminService := service.NewAdminService(userRepository, groupRepository, accountRepository, soraAccountRepository, proxyRepository, apiKeyRepository, redeemCodeRepository, userGroupRateRepository, billingCacheService, proxyExitInfoProber, proxyLatencyCache, apiKeyAuthCacheInvalidator, client, settingService, subscriptionService, userSubscriptionRepository, privacyClientFactory)
+	adminService := service.NewAdminService(userRepository, groupRepository, accountRepository, soraAccountRepository, proxyRepository, apiKeyRepository, redeemCodeRepository, userGroupRateRepository, billingCacheService, proxyExitInfoProber, proxyLatencyCache, apiKeyAuthCacheInvalidator, client, settingService, subscriptionService, userSubscriptionRepository)
 	concurrencyCache := repository.ProvideConcurrencyCache(redisClient, configConfig)
 	concurrencyService := service.ProvideConcurrencyService(concurrencyCache, accountRepository, configConfig)
 	adminUserHandler := admin.NewUserHandler(adminService, concurrencyService)
@@ -164,9 +162,9 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	deferredService := service.ProvideDeferredService(accountRepository, timingWheelService)
 	claudeTokenProvider := service.NewClaudeTokenProvider(accountRepository, geminiTokenCache, oAuthService)
 	digestSessionStore := service.NewDigestSessionStore()
-	gatewayService := service.NewGatewayService(accountRepository, groupRepository, usageLogRepository, usageBillingRepository, userRepository, userSubscriptionRepository, userGroupRateRepository, gatewayCache, configConfig, schedulerSnapshotService, concurrencyService, billingService, rateLimitService, billingCacheService, identityService, httpUpstream, deferredService, claudeTokenProvider, sessionLimitCache, rpmCache, digestSessionStore, settingService)
+	gatewayService := service.NewGatewayService(accountRepository, groupRepository, usageLogRepository, userRepository, userSubscriptionRepository, userGroupRateRepository, gatewayCache, configConfig, schedulerSnapshotService, concurrencyService, billingService, rateLimitService, billingCacheService, identityService, httpUpstream, deferredService, claudeTokenProvider, sessionLimitCache, rpmCache, digestSessionStore, settingService)
 	openAITokenProvider := service.NewOpenAITokenProvider(accountRepository, geminiTokenCache, openAIOAuthService)
-	openAIGatewayService := service.NewOpenAIGatewayService(accountRepository, usageLogRepository, usageBillingRepository, userRepository, userSubscriptionRepository, userGroupRateRepository, gatewayCache, configConfig, schedulerSnapshotService, concurrencyService, billingService, rateLimitService, billingCacheService, httpUpstream, deferredService, openAITokenProvider)
+	openAIGatewayService := service.NewOpenAIGatewayService(accountRepository, usageLogRepository, userRepository, userSubscriptionRepository, userGroupRateRepository, gatewayCache, configConfig, schedulerSnapshotService, concurrencyService, billingService, rateLimitService, billingCacheService, httpUpstream, deferredService, openAITokenProvider)
 	geminiMessagesCompatService := service.NewGeminiMessagesCompatService(accountRepository, groupRepository, gatewayCache, schedulerSnapshotService, geminiTokenProvider, rateLimitService, httpUpstream, antigravityGatewayService, configConfig)
 	opsSystemLogSink := service.ProvideOpsSystemLogSink(opsRepository)
 	opsService := service.NewOpsService(opsRepository, settingRepository, configConfig, accountRepository, userRepository, concurrencyService, gatewayService, openAIGatewayService, geminiMessagesCompatService, antigravityGatewayService, opsSystemLogSink)
@@ -228,7 +226,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	opsCleanupService := service.ProvideOpsCleanupService(opsRepository, db, redisClient, configConfig)
 	opsScheduledReportService := service.ProvideOpsScheduledReportService(opsService, userService, emailService, redisClient, configConfig)
 	soraMediaCleanupService := service.ProvideSoraMediaCleanupService(soraMediaStorage, configConfig)
-	tokenRefreshService := service.ProvideTokenRefreshService(accountRepository, soraAccountRepository, oAuthService, openAIOAuthService, geminiOAuthService, antigravityOAuthService, compositeTokenCacheInvalidator, schedulerCache, configConfig, tempUnschedCache, privacyClientFactory, proxyRepository)
+	tokenRefreshService := service.ProvideTokenRefreshService(accountRepository, soraAccountRepository, oAuthService, openAIOAuthService, geminiOAuthService, antigravityOAuthService, compositeTokenCacheInvalidator, schedulerCache, configConfig, tempUnschedCache)
 	accountExpiryService := service.ProvideAccountExpiryService(accountRepository)
 	subscriptionExpiryService := service.ProvideSubscriptionExpiryService(userSubscriptionRepository)
 	scheduledTestRunnerService := service.ProvideScheduledTestRunnerService(scheduledTestPlanRepository, scheduledTestService, accountTestService, rateLimitService, configConfig)
@@ -247,10 +245,6 @@ type Application struct {
 	Cleanup func()
 }
 
-func providePrivacyClientFactory() service.PrivacyClientFactory {
-	return repository.CreatePrivacyReqClient
-}
-
 func provideServiceBuildInfo(buildInfo handler.BuildInfo) service.BuildInfo {
 	return service.BuildInfo{
 		Version:   buildInfo.Version,

backend/ent/group.go

@@ -62,26 +62,28 @@ type Group struct {
 	SoraVideoPricePerRequestHd *float64 `json:"sora_video_price_per_request_hd,omitempty"`
 	// SoraStorageQuotaBytes holds the value of the "sora_storage_quota_bytes" field.
 	SoraStorageQuotaBytes int64 `json:"sora_storage_quota_bytes,omitempty"`
-	// 是否仅允许 Claude Code 客户端
+	// allow Claude Code client only
 	ClaudeCodeOnly bool `json:"claude_code_only,omitempty"`
-	// 非 Claude Code 请求降级使用的分组 ID
+	// fallback group for non-Claude-Code requests
 	FallbackGroupID *int64 `json:"fallback_group_id,omitempty"`
-	// 无效请求兜底使用的分组 ID
+	// fallback group for invalid request
 	FallbackGroupIDOnInvalidRequest *int64 `json:"fallback_group_id_on_invalid_request,omitempty"`
-	// 模型路由配置：模型模式 -> 优先账号ID列表
+	// model routing config: pattern -> account ids
 	ModelRouting map[string][]int64 `json:"model_routing,omitempty"`
-	// 是否启用模型路由配置
+	// whether model routing is enabled
 	ModelRoutingEnabled bool `json:"model_routing_enabled,omitempty"`
-	// 是否注入 MCP XML 调用协议提示词（仅 antigravity 平台）
+	// whether MCP XML prompt injection is enabled
 	McpXMLInject bool `json:"mcp_xml_inject,omitempty"`
-	// 支持的模型系列：claude, gemini_text, gemini_image
+	// supported model scopes: claude, gemini_text, gemini_image
 	SupportedModelScopes []string `json:"supported_model_scopes,omitempty"`
-	// 分组显示排序，数值越小越靠前
+	// group display order, lower comes first
 	SortOrder int `json:"sort_order,omitempty"`
 	// 是否允许 /v1/messages 调度到此 OpenAI 分组
 	AllowMessagesDispatch bool `json:"allow_messages_dispatch,omitempty"`
 	// 默认映射模型 ID，当账号级映射找不到时使用此值
 	DefaultMappedModel string `json:"default_mapped_model,omitempty"`
+	// simulate claude usage as claude-max style (1h cache write)
+	SimulateClaudeMaxEnabled bool `json:"simulate_claude_max_enabled,omitempty"`
 	// Edges holds the relations/edges for other nodes in the graph.
 	// The values are being populated by the GroupQuery when eager-loading is set.
 	Edges        GroupEdges `json:"edges"`
@@ -190,7 +192,7 @@ func (*Group) scanValues(columns []string) ([]any, error) {
 		switch columns[i] {
 		case group.FieldModelRouting, group.FieldSupportedModelScopes:
 			values[i] = new([]byte)
-		case group.FieldIsExclusive, group.FieldClaudeCodeOnly, group.FieldModelRoutingEnabled, group.FieldMcpXMLInject, group.FieldAllowMessagesDispatch:
+		case group.FieldIsExclusive, group.FieldClaudeCodeOnly, group.FieldModelRoutingEnabled, group.FieldMcpXMLInject, group.FieldAllowMessagesDispatch, group.FieldSimulateClaudeMaxEnabled:
 			values[i] = new(sql.NullBool)
 		case group.FieldRateMultiplier, group.FieldDailyLimitUsd, group.FieldWeeklyLimitUsd, group.FieldMonthlyLimitUsd, group.FieldImagePrice1k, group.FieldImagePrice2k, group.FieldImagePrice4k, group.FieldSoraImagePrice360, group.FieldSoraImagePrice540, group.FieldSoraVideoPricePerRequest, group.FieldSoraVideoPricePerRequestHd:
 			values[i] = new(sql.NullFloat64)
@@ -431,6 +433,12 @@ func (_m *Group) assignValues(columns []string, values []any) error {
 			} else if value.Valid {
 				_m.DefaultMappedModel = value.String
 			}
+		case group.FieldSimulateClaudeMaxEnabled:
+			if value, ok := values[i].(*sql.NullBool); !ok {
+				return fmt.Errorf("unexpected type %T for field simulate_claude_max_enabled", values[i])
+			} else if value.Valid {
+				_m.SimulateClaudeMaxEnabled = value.Bool
+			}
 		default:
 			_m.selectValues.Set(columns[i], values[i])
 		}
@@ -630,6 +638,9 @@ func (_m *Group) String() string {
 	builder.WriteString(", ")
 	builder.WriteString("default_mapped_model=")
 	builder.WriteString(_m.DefaultMappedModel)
+	builder.WriteString(", ")
+	builder.WriteString("simulate_claude_max_enabled=")
+	builder.WriteString(fmt.Sprintf("%v", _m.SimulateClaudeMaxEnabled))
 	builder.WriteByte(')')
 	return builder.String()
 }

backend/ent/group/group.go

@@ -79,6 +79,8 @@ const (
 	FieldAllowMessagesDispatch = "allow_messages_dispatch"
 	// FieldDefaultMappedModel holds the string denoting the default_mapped_model field in the database.
 	FieldDefaultMappedModel = "default_mapped_model"
+	// FieldSimulateClaudeMaxEnabled holds the string denoting the simulate_claude_max_enabled field in the database.
+	FieldSimulateClaudeMaxEnabled = "simulate_claude_max_enabled"
 	// EdgeAPIKeys holds the string denoting the api_keys edge name in mutations.
 	EdgeAPIKeys = "api_keys"
 	// EdgeRedeemCodes holds the string denoting the redeem_codes edge name in mutations.
@@ -186,6 +188,7 @@ var Columns = []string{
 	FieldSortOrder,
 	FieldAllowMessagesDispatch,
 	FieldDefaultMappedModel,
+	FieldSimulateClaudeMaxEnabled,
 }
 
 var (
@@ -259,6 +262,8 @@ var (
 	DefaultDefaultMappedModel string
 	// DefaultMappedModelValidator is a validator for the "default_mapped_model" field. It is called by the builders before save.
 	DefaultMappedModelValidator func(string) error
+	// DefaultSimulateClaudeMaxEnabled holds the default value on creation for the "simulate_claude_max_enabled" field.
+	DefaultSimulateClaudeMaxEnabled bool
 )
 
 // OrderOption defines the ordering options for the Group queries.
@@ -419,6 +424,11 @@ func ByDefaultMappedModel(opts ...sql.OrderTermOption) OrderOption {
 	return sql.OrderByField(FieldDefaultMappedModel, opts...).ToFunc()
 }
 
+// BySimulateClaudeMaxEnabled orders the results by the simulate_claude_max_enabled field.
+func BySimulateClaudeMaxEnabled(opts ...sql.OrderTermOption) OrderOption {
+	return sql.OrderByField(FieldSimulateClaudeMaxEnabled, opts...).ToFunc()
+}
+
 // ByAPIKeysCount orders the results by api_keys count.
 func ByAPIKeysCount(opts ...sql.OrderTermOption) OrderOption {
 	return func(s *sql.Selector) {

backend/ent/group/where.go

@@ -205,6 +205,11 @@ func DefaultMappedModel(v string) predicate.Group {
 	return predicate.Group(sql.FieldEQ(FieldDefaultMappedModel, v))
 }
 
+// SimulateClaudeMaxEnabled applies equality check predicate on the "simulate_claude_max_enabled" field. It's identical to SimulateClaudeMaxEnabledEQ.
+func SimulateClaudeMaxEnabled(v bool) predicate.Group {
+	return predicate.Group(sql.FieldEQ(FieldSimulateClaudeMaxEnabled, v))
+}
+
 // CreatedAtEQ applies the EQ predicate on the "created_at" field.
 func CreatedAtEQ(v time.Time) predicate.Group {
 	return predicate.Group(sql.FieldEQ(FieldCreatedAt, v))
@@ -1555,6 +1560,16 @@ func DefaultMappedModelContainsFold(v string) predicate.Group {
 	return predicate.Group(sql.FieldContainsFold(FieldDefaultMappedModel, v))
 }
 
+// SimulateClaudeMaxEnabledEQ applies the EQ predicate on the "simulate_claude_max_enabled" field.
+func SimulateClaudeMaxEnabledEQ(v bool) predicate.Group {
+	return predicate.Group(sql.FieldEQ(FieldSimulateClaudeMaxEnabled, v))
+}
+
+// SimulateClaudeMaxEnabledNEQ applies the NEQ predicate on the "simulate_claude_max_enabled" field.
+func SimulateClaudeMaxEnabledNEQ(v bool) predicate.Group {
+	return predicate.Group(sql.FieldNEQ(FieldSimulateClaudeMaxEnabled, v))
+}
+
 // HasAPIKeys applies the HasEdge predicate on the "api_keys" edge.
 func HasAPIKeys() predicate.Group {
 	return predicate.Group(func(s *sql.Selector) {

backend/ent/group_create.go

@@ -452,6 +452,20 @@ func (_c *GroupCreate) SetNillableDefaultMappedModel(v *string) *GroupCreate {
 	return _c
 }
 
+// SetSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field.
+func (_c *GroupCreate) SetSimulateClaudeMaxEnabled(v bool) *GroupCreate {
+	_c.mutation.SetSimulateClaudeMaxEnabled(v)
+	return _c
+}
+
+// SetNillableSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field if the given value is not nil.
+func (_c *GroupCreate) SetNillableSimulateClaudeMaxEnabled(v *bool) *GroupCreate {
+	if v != nil {
+		_c.SetSimulateClaudeMaxEnabled(*v)
+	}
+	return _c
+}
+
 // AddAPIKeyIDs adds the "api_keys" edge to the APIKey entity by IDs.
 func (_c *GroupCreate) AddAPIKeyIDs(ids ...int64) *GroupCreate {
 	_c.mutation.AddAPIKeyIDs(ids...)
@@ -649,6 +663,10 @@ func (_c *GroupCreate) defaults() error {
 		v := group.DefaultDefaultMappedModel
 		_c.mutation.SetDefaultMappedModel(v)
 	}
+	if _, ok := _c.mutation.SimulateClaudeMaxEnabled(); !ok {
+		v := group.DefaultSimulateClaudeMaxEnabled
+		_c.mutation.SetSimulateClaudeMaxEnabled(v)
+	}
 	return nil
 }
 
@@ -730,6 +748,9 @@ func (_c *GroupCreate) check() error {
 			return &ValidationError{Name: "default_mapped_model", err: fmt.Errorf(`ent: validator failed for field "Group.default_mapped_model": %w`, err)}
 		}
 	}
+	if _, ok := _c.mutation.SimulateClaudeMaxEnabled(); !ok {
+		return &ValidationError{Name: "simulate_claude_max_enabled", err: errors.New(`ent: missing required field "Group.simulate_claude_max_enabled"`)}
+	}
 	return nil
 }
 
@@ -885,6 +906,10 @@ func (_c *GroupCreate) createSpec() (*Group, *sqlgraph.CreateSpec) {
 		_spec.SetField(group.FieldDefaultMappedModel, field.TypeString, value)
 		_node.DefaultMappedModel = value
 	}
+	if value, ok := _c.mutation.SimulateClaudeMaxEnabled(); ok {
+		_spec.SetField(group.FieldSimulateClaudeMaxEnabled, field.TypeBool, value)
+		_node.SimulateClaudeMaxEnabled = value
+	}
 	if nodes := _c.mutation.APIKeysIDs(); len(nodes) > 0 {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.O2M,
@@ -1599,6 +1624,18 @@ func (u *GroupUpsert) UpdateDefaultMappedModel() *GroupUpsert {
 	return u
 }
 
+// SetSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field.
+func (u *GroupUpsert) SetSimulateClaudeMaxEnabled(v bool) *GroupUpsert {
+	u.Set(group.FieldSimulateClaudeMaxEnabled, v)
+	return u
+}
+
+// UpdateSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field to the value that was provided on create.
+func (u *GroupUpsert) UpdateSimulateClaudeMaxEnabled() *GroupUpsert {
+	u.SetExcluded(group.FieldSimulateClaudeMaxEnabled)
+	return u
+}
+
 // UpdateNewValues updates the mutable fields using the new values that were set on create.
 // Using this option is equivalent to using:
 //
@@ -2295,6 +2332,20 @@ func (u *GroupUpsertOne) UpdateDefaultMappedModel() *GroupUpsertOne {
 	})
 }
 
+// SetSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field.
+func (u *GroupUpsertOne) SetSimulateClaudeMaxEnabled(v bool) *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.SetSimulateClaudeMaxEnabled(v)
+	})
+}
+
+// UpdateSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field to the value that was provided on create.
+func (u *GroupUpsertOne) UpdateSimulateClaudeMaxEnabled() *GroupUpsertOne {
+	return u.Update(func(s *GroupUpsert) {
+		s.UpdateSimulateClaudeMaxEnabled()
+	})
+}
+
 // Exec executes the query.
 func (u *GroupUpsertOne) Exec(ctx context.Context) error {
 	if len(u.create.conflict) == 0 {
@@ -3157,6 +3208,20 @@ func (u *GroupUpsertBulk) UpdateDefaultMappedModel() *GroupUpsertBulk {
 	})
 }
 
+// SetSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field.
+func (u *GroupUpsertBulk) SetSimulateClaudeMaxEnabled(v bool) *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.SetSimulateClaudeMaxEnabled(v)
+	})
+}
+
+// UpdateSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field to the value that was provided on create.
+func (u *GroupUpsertBulk) UpdateSimulateClaudeMaxEnabled() *GroupUpsertBulk {
+	return u.Update(func(s *GroupUpsert) {
+		s.UpdateSimulateClaudeMaxEnabled()
+	})
+}
+
 // Exec executes the query.
 func (u *GroupUpsertBulk) Exec(ctx context.Context) error {
 	if u.create.err != nil {

backend/ent/group_update.go

@@ -653,6 +653,20 @@ func (_u *GroupUpdate) SetNillableDefaultMappedModel(v *string) *GroupUpdate {
 	return _u
 }
 
+// SetSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field.
+func (_u *GroupUpdate) SetSimulateClaudeMaxEnabled(v bool) *GroupUpdate {
+	_u.mutation.SetSimulateClaudeMaxEnabled(v)
+	return _u
+}
+
+// SetNillableSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field if the given value is not nil.
+func (_u *GroupUpdate) SetNillableSimulateClaudeMaxEnabled(v *bool) *GroupUpdate {
+	if v != nil {
+		_u.SetSimulateClaudeMaxEnabled(*v)
+	}
+	return _u
+}
+
 // AddAPIKeyIDs adds the "api_keys" edge to the APIKey entity by IDs.
 func (_u *GroupUpdate) AddAPIKeyIDs(ids ...int64) *GroupUpdate {
 	_u.mutation.AddAPIKeyIDs(ids...)
@@ -1149,6 +1163,9 @@ func (_u *GroupUpdate) sqlSave(ctx context.Context) (_node int, err error) {
 	if value, ok := _u.mutation.DefaultMappedModel(); ok {
 		_spec.SetField(group.FieldDefaultMappedModel, field.TypeString, value)
 	}
+	if value, ok := _u.mutation.SimulateClaudeMaxEnabled(); ok {
+		_spec.SetField(group.FieldSimulateClaudeMaxEnabled, field.TypeBool, value)
+	}
 	if _u.mutation.APIKeysCleared() {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.O2M,
@@ -2081,6 +2098,20 @@ func (_u *GroupUpdateOne) SetNillableDefaultMappedModel(v *string) *GroupUpdateO
 	return _u
 }
 
+// SetSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field.
+func (_u *GroupUpdateOne) SetSimulateClaudeMaxEnabled(v bool) *GroupUpdateOne {
+	_u.mutation.SetSimulateClaudeMaxEnabled(v)
+	return _u
+}
+
+// SetNillableSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field if the given value is not nil.
+func (_u *GroupUpdateOne) SetNillableSimulateClaudeMaxEnabled(v *bool) *GroupUpdateOne {
+	if v != nil {
+		_u.SetSimulateClaudeMaxEnabled(*v)
+	}
+	return _u
+}
+
 // AddAPIKeyIDs adds the "api_keys" edge to the APIKey entity by IDs.
 func (_u *GroupUpdateOne) AddAPIKeyIDs(ids ...int64) *GroupUpdateOne {
 	_u.mutation.AddAPIKeyIDs(ids...)
@@ -2607,6 +2638,9 @@ func (_u *GroupUpdateOne) sqlSave(ctx context.Context) (_node *Group, err error)
 	if value, ok := _u.mutation.DefaultMappedModel(); ok {
 		_spec.SetField(group.FieldDefaultMappedModel, field.TypeString, value)
 	}
+	if value, ok := _u.mutation.SimulateClaudeMaxEnabled(); ok {
+		_spec.SetField(group.FieldSimulateClaudeMaxEnabled, field.TypeBool, value)
+	}
 	if _u.mutation.APIKeysCleared() {
 		edge := &sqlgraph.EdgeSpec{
 			Rel:     sqlgraph.O2M,

backend/ent/migrate/schema.go

@@ -410,6 +410,7 @@ var (
 		{Name: "sort_order", Type: field.TypeInt, Default: 0},
 		{Name: "allow_messages_dispatch", Type: field.TypeBool, Default: false},
 		{Name: "default_mapped_model", Type: field.TypeString, Size: 100, Default: ""},
+		{Name: "simulate_claude_max_enabled", Type: field.TypeBool, Default: false},
 	}
 	// GroupsTable holds the schema information for the "groups" table.
 	GroupsTable = &schema.Table{

backend/ent/mutation.go

@@ -8252,6 +8252,7 @@ type GroupMutation struct {
 	addsort_order                           *int
 	allow_messages_dispatch                 *bool
 	default_mapped_model                    *string
+	simulate_claude_max_enabled             *bool
 	clearedFields                           map[string]struct{}
 	api_keys                                map[int64]struct{}
 	removedapi_keys                         map[int64]struct{}
@@ -10068,6 +10069,42 @@ func (m *GroupMutation) ResetDefaultMappedModel() {
 	m.default_mapped_model = nil
 }
 
+// SetSimulateClaudeMaxEnabled sets the "simulate_claude_max_enabled" field.
+func (m *GroupMutation) SetSimulateClaudeMaxEnabled(b bool) {
+	m.simulate_claude_max_enabled = &b
+}
+
+// SimulateClaudeMaxEnabled returns the value of the "simulate_claude_max_enabled" field in the mutation.
+func (m *GroupMutation) SimulateClaudeMaxEnabled() (r bool, exists bool) {
+	v := m.simulate_claude_max_enabled
+	if v == nil {
+		return
+	}
+	return *v, true
+}
+
+// OldSimulateClaudeMaxEnabled returns the old "simulate_claude_max_enabled" field's value of the Group entity.
+// If the Group object wasn't provided to the builder, the object is fetched from the database.
+// An error is returned if the mutation operation is not UpdateOne, or the database query fails.
+func (m *GroupMutation) OldSimulateClaudeMaxEnabled(ctx context.Context) (v bool, err error) {
+	if !m.op.Is(OpUpdateOne) {
+		return v, errors.New("OldSimulateClaudeMaxEnabled is only allowed on UpdateOne operations")
+	}
+	if m.id == nil || m.oldValue == nil {
+		return v, errors.New("OldSimulateClaudeMaxEnabled requires an ID field in the mutation")
+	}
+	oldValue, err := m.oldValue(ctx)
+	if err != nil {
+		return v, fmt.Errorf("querying old value for OldSimulateClaudeMaxEnabled: %w", err)
+	}
+	return oldValue.SimulateClaudeMaxEnabled, nil
+}
+
+// ResetSimulateClaudeMaxEnabled resets all changes to the "simulate_claude_max_enabled" field.
+func (m *GroupMutation) ResetSimulateClaudeMaxEnabled() {
+	m.simulate_claude_max_enabled = nil
+}
+
 // AddAPIKeyIDs adds the "api_keys" edge to the APIKey entity by ids.
 func (m *GroupMutation) AddAPIKeyIDs(ids ...int64) {
 	if m.api_keys == nil {
@@ -10426,7 +10463,7 @@ func (m *GroupMutation) Type() string {
 // order to get all numeric fields that were incremented/decremented, call
 // AddedFields().
 func (m *GroupMutation) Fields() []string {
-	fields := make([]string, 0, 32)
+	fields := make([]string, 0, 33)
 	if m.created_at != nil {
 		fields = append(fields, group.FieldCreatedAt)
 	}
@@ -10523,6 +10560,9 @@ func (m *GroupMutation) Fields() []string {
 	if m.default_mapped_model != nil {
 		fields = append(fields, group.FieldDefaultMappedModel)
 	}
+	if m.simulate_claude_max_enabled != nil {
+		fields = append(fields, group.FieldSimulateClaudeMaxEnabled)
+	}
 	return fields
 }
 
@@ -10595,6 +10635,8 @@ func (m *GroupMutation) Field(name string) (ent.Value, bool) {
 		return m.AllowMessagesDispatch()
 	case group.FieldDefaultMappedModel:
 		return m.DefaultMappedModel()
+	case group.FieldSimulateClaudeMaxEnabled:
+		return m.SimulateClaudeMaxEnabled()
 	}
 	return nil, false
 }
@@ -10668,6 +10710,8 @@ func (m *GroupMutation) OldField(ctx context.Context, name string) (ent.Value, e
 		return m.OldAllowMessagesDispatch(ctx)
 	case group.FieldDefaultMappedModel:
 		return m.OldDefaultMappedModel(ctx)
+	case group.FieldSimulateClaudeMaxEnabled:
+		return m.OldSimulateClaudeMaxEnabled(ctx)
 	}
 	return nil, fmt.Errorf("unknown Group field %s", name)
 }
@@ -10901,6 +10945,13 @@ func (m *GroupMutation) SetField(name string, value ent.Value) error {
 		}
 		m.SetDefaultMappedModel(v)
 		return nil
+	case group.FieldSimulateClaudeMaxEnabled:
+		v, ok := value.(bool)
+		if !ok {
+			return fmt.Errorf("unexpected type %T for field %s", value, name)
+		}
+		m.SetSimulateClaudeMaxEnabled(v)
+		return nil
 	}
 	return fmt.Errorf("unknown Group field %s", name)
 }
@@ -11334,6 +11385,9 @@ func (m *GroupMutation) ResetField(name string) error {
 	case group.FieldDefaultMappedModel:
 		m.ResetDefaultMappedModel()
 		return nil
+	case group.FieldSimulateClaudeMaxEnabled:
+		m.ResetSimulateClaudeMaxEnabled()
+		return nil
 	}
 	return fmt.Errorf("unknown Group field %s", name)
 }

backend/ent/runtime/runtime.go

@@ -463,6 +463,10 @@ func init() {
 	group.DefaultDefaultMappedModel = groupDescDefaultMappedModel.Default.(string)
 	// group.DefaultMappedModelValidator is a validator for the "default_mapped_model" field. It is called by the builders before save.
 	group.DefaultMappedModelValidator = groupDescDefaultMappedModel.Validators[0].(func(string) error)
+	// groupDescSimulateClaudeMaxEnabled is the schema descriptor for simulate_claude_max_enabled field.
+	groupDescSimulateClaudeMaxEnabled := groupFields[29].Descriptor()
+	// group.DefaultSimulateClaudeMaxEnabled holds the default value on creation for the simulate_claude_max_enabled field.
+	group.DefaultSimulateClaudeMaxEnabled = groupDescSimulateClaudeMaxEnabled.Default.(bool)
 	idempotencyrecordMixin := schema.IdempotencyRecord{}.Mixin()
 	idempotencyrecordMixinFields0 := idempotencyrecordMixin[0].Fields()
 	_ = idempotencyrecordMixinFields0

backend/ent/schema/group.go

@@ -33,8 +33,6 @@ func (Group) Mixin() []ent.Mixin {
 
 func (Group) Fields() []ent.Field {
 	return []ent.Field{
-		// 唯一约束通过部分索引实现（WHERE deleted_at IS NULL），支持软删除后重用
-		// 见迁移文件 016_soft_delete_partial_unique_indexes.sql
 		field.String("name").
 			MaxLen(100).
 			NotEmpty(),
@@ -51,7 +49,6 @@ func (Group) Fields() []ent.Field {
 			MaxLen(20).
 			Default(domain.StatusActive),
 
-		// Subscription-related fields (added by migration 003)
 		field.String("platform").
 			MaxLen(50).
 			Default(domain.PlatformAnthropic),
@@ -73,7 +70,6 @@ func (Group) Fields() []ent.Field {
 		field.Int("default_validity_days").
 			Default(30),
 
-		// 图片生成计费配置（antigravity 和 gemini 平台使用）
 		field.Float("image_price_1k").
 			Optional().
 			Nillable().
@@ -87,7 +83,6 @@ func (Group) Fields() []ent.Field {
 			Nillable().
 			SchemaType(map[string]string{dialect.Postgres: "decimal(20,8)"}),
 
-		// Sora 按次计费配置（阶段 1）
 		field.Float("sora_image_price_360").
 			Optional().
 			Nillable().
@@ -109,45 +104,38 @@ func (Group) Fields() []ent.Field {
 		field.Int64("sora_storage_quota_bytes").
 			Default(0),
 
-		// Claude Code 客户端限制 (added by migration 029)
 		field.Bool("claude_code_only").
 			Default(false).
-			Comment("是否仅允许 Claude Code 客户端"),
+			Comment("allow Claude Code client only"),
 		field.Int64("fallback_group_id").
 			Optional().
 			Nillable().
-			Comment("非 Claude Code 请求降级使用的分组 ID"),
+			Comment("fallback group for non-Claude-Code requests"),
 		field.Int64("fallback_group_id_on_invalid_request").
 			Optional().
 			Nillable().
-			Comment("无效请求兜底使用的分组 ID"),
+			Comment("fallback group for invalid request"),
 
-		// 模型路由配置 (added by migration 040)
 		field.JSON("model_routing", map[string][]int64{}).
 			Optional().
 			SchemaType(map[string]string{dialect.Postgres: "jsonb"}).
-			Comment("模型路由配置：模型模式 -> 优先账号ID列表"),
-
-		// 模型路由开关 (added by migration 041)
+			Comment("model routing config: pattern -> account ids"),
 		field.Bool("model_routing_enabled").
 			Default(false).
-			Comment("是否启用模型路由配置"),
+			Comment("whether model routing is enabled"),
 
-		// MCP XML 协议注入开关 (added by migration 042)
 		field.Bool("mcp_xml_inject").
 			Default(true).
-			Comment("是否注入 MCP XML 调用协议提示词（仅 antigravity 平台）"),
+			Comment("whether MCP XML prompt injection is enabled"),
 
-		// 支持的模型系列 (added by migration 046)
 		field.JSON("supported_model_scopes", []string{}).
 			Default([]string{"claude", "gemini_text", "gemini_image"}).
 			SchemaType(map[string]string{dialect.Postgres: "jsonb"}).
-			Comment("支持的模型系列：claude, gemini_text, gemini_image"),
+			Comment("supported model scopes: claude, gemini_text, gemini_image"),
 
-		// 分组排序 (added by migration 052)
 		field.Int("sort_order").
 			Default(0).
-			Comment("分组显示排序，数值越小越靠前"),
+			Comment("group display order, lower comes first"),
 
 		// OpenAI Messages 调度配置 (added by migration 069)
 		field.Bool("allow_messages_dispatch").
@@ -157,6 +145,9 @@ func (Group) Fields() []ent.Field {
 			MaxLen(100).
 			Default("").
 			Comment("默认映射模型 ID，当账号级映射找不到时使用此值"),
+		field.Bool("simulate_claude_max_enabled").
+			Default(false).
+			Comment("simulate claude usage as claude-max style (1h cache write)"),
 	}
 }
 
@@ -172,14 +163,11 @@ func (Group) Edges() []ent.Edge {
 		edge.From("allowed_users", User.Type).
 			Ref("allowed_groups").
 			Through("user_allowed_groups", UserAllowedGroup.Type),
-		// 注意：fallback_group_id 直接作为字段使用，不定义 edge
-		// 这样允许多个分组指向同一个降级分组（M2O 关系）
 	}
 }
 
 func (Group) Indexes() []ent.Index {
 	return []ent.Index{
-		// name 字段已在 Fields() 中声明 Unique()，无需重复索引
 		index.Fields("status"),
 		index.Fields("platform"),
 		index.Fields("subscription_type"),

backend/go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/DATA-DOG/go-sqlmock v1.5.2
 	github.com/DouDOU-start/go-sora2api v1.1.0
 	github.com/alitto/pond/v2 v2.6.2
-	github.com/aws/aws-sdk-go-v2 v1.41.3
+	github.com/aws/aws-sdk-go-v2 v1.41.2
 	github.com/aws/aws-sdk-go-v2/config v1.32.10
 	github.com/aws/aws-sdk-go-v2/credentials v1.19.10
 	github.com/aws/aws-sdk-go-v2/service/s3 v1.96.2
@@ -66,7 +66,7 @@ require (
 	github.com/aws/aws-sdk-go-v2/service/sso v1.30.11 // indirect
 	github.com/aws/aws-sdk-go-v2/service/ssooidc v1.35.15 // indirect
 	github.com/aws/aws-sdk-go-v2/service/sts v1.41.7 // indirect
-	github.com/aws/smithy-go v1.24.2 // indirect
+	github.com/aws/smithy-go v1.24.1 // indirect
 	github.com/bdandy/go-errors v1.2.2 // indirect
 	github.com/bdandy/go-socks4 v1.2.3 // indirect
 	github.com/bmatcuk/doublestar v1.3.4 // indirect
@@ -87,6 +87,7 @@ require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f // indirect
 	github.com/distribution/reference v0.6.0 // indirect
+	github.com/dlclark/regexp2 v1.10.0 // indirect
 	github.com/docker/docker v28.5.1+incompatible // indirect
 	github.com/docker/go-connections v0.6.0 // indirect
 	github.com/docker/go-units v0.5.0 // indirect
@@ -137,6 +138,8 @@ require (
 	github.com/opencontainers/image-spec v1.1.1 // indirect
 	github.com/pelletier/go-toml/v2 v2.2.2 // indirect
 	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pkoukk/tiktoken-go v0.1.8 // indirect
+	github.com/pkoukk/tiktoken-go-loader v0.0.2 // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c // indirect
 	github.com/quic-go/qpack v0.6.0 // indirect

backend/go.sum

@@ -24,8 +24,6 @@ github.com/apparentlymart/go-textseg/v15 v15.0.0 h1:uYvfpb3DyLSCGWnctWKGj857c6ew
 github.com/apparentlymart/go-textseg/v15 v15.0.0/go.mod h1:K8XmNZdhEBkdlyDdvbmmsvpAG721bKi0joRfFdHIWJ4=
 github.com/aws/aws-sdk-go-v2 v1.41.2 h1:LuT2rzqNQsauaGkPK/7813XxcZ3o3yePY0Iy891T2ls=
 github.com/aws/aws-sdk-go-v2 v1.41.2/go.mod h1:IvvlAZQXvTXznUPfRVfryiG1fbzE2NGK6m9u39YQ+S4=
-github.com/aws/aws-sdk-go-v2 v1.41.3 h1:4kQ/fa22KjDt13QCy1+bYADvdgcxpfH18f0zP542kZA=
-github.com/aws/aws-sdk-go-v2 v1.41.3/go.mod h1:mwsPRE8ceUUpiTgF7QmQIJ7lgsKUPQOUl3o72QBrE1o=
 github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.5 h1:zWFmPmgw4sveAYi1mRqG+E/g0461cJ5M4bJ8/nc6d3Q=
 github.com/aws/aws-sdk-go-v2/aws/protocol/eventstream v1.7.5/go.mod h1:nVUlMLVV8ycXSb7mSkcNu9e3v/1TJq2RTlrPwhYWr5c=
 github.com/aws/aws-sdk-go-v2/config v1.32.10 h1:9DMthfO6XWZYLfzZglAgW5Fyou2nRI5CuV44sTedKBI=
@@ -62,8 +60,6 @@ github.com/aws/aws-sdk-go-v2/service/sts v1.41.7 h1:NITQpgo9A5NrDZ57uOWj+abvXSb8
 github.com/aws/aws-sdk-go-v2/service/sts v1.41.7/go.mod h1:sks5UWBhEuWYDPdwlnRFn1w7xWdH29Jcpe+/PJQefEs=
 github.com/aws/smithy-go v1.24.1 h1:VbyeNfmYkWoxMVpGUAbQumkODcYmfMRfZ8yQiH30SK0=
 github.com/aws/smithy-go v1.24.1/go.mod h1:LEj2LM3rBRQJxPZTB4KuzZkaZYnZPnvgIhb4pu07mx0=
-github.com/aws/smithy-go v1.24.2 h1:FzA3bu/nt/vDvmnkg+R8Xl46gmzEDam6mZ1hzmwXFng=
-github.com/aws/smithy-go v1.24.2/go.mod h1:YE2RhdIuDbA5E5bTdciG9KrW3+TiEONeUWCqxX9i1Fc=
 github.com/bdandy/go-errors v1.2.2 h1:WdFv/oukjTJCLa79UfkGmwX7ZxONAihKu4V0mLIs11Q=
 github.com/bdandy/go-errors v1.2.2/go.mod h1:NkYHl4Fey9oRRdbB1CoC6e84tuqQHiqrOcZpqFEkBxM=
 github.com/bdandy/go-socks4 v1.2.3 h1:Q6Y2heY1GRjCtHbmlKfnwrKVU/k81LS8mRGLRlmDlic=
@@ -128,6 +124,8 @@ github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f h1:lO4WD4F/r
 github.com/dgryski/go-rendezvous v0.0.0-20200823014737-9f7001d12a5f/go.mod h1:cuUVRXasLTGF7a8hSLbxyZXjz+1KgoB3wDUb6vlszIc=
 github.com/distribution/reference v0.6.0 h1:0IXCQ5g4/QMHHkarYzh5l+u8T3t73zM5QvfrDyIgxBk=
 github.com/distribution/reference v0.6.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5Y4f/wlDRiLyi3E=
+github.com/dlclark/regexp2 v1.10.0 h1:+/GIL799phkJqYW+3YbOd8LCcbHzT0Pbo8zl70MHsq0=
+github.com/dlclark/regexp2 v1.10.0/go.mod h1:DHkYz0B9wPfa6wondMfaivmHpzrQ3v9q8cnmRbL6yW8=
 github.com/docker/docker v28.5.1+incompatible h1:Bm8DchhSD2J6PsFzxC35TZo4TLGR2PdW/E69rU45NhM=
 github.com/docker/docker v28.5.1+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/go-connections v0.6.0 h1:LlMG9azAe1TqfR7sO+NJttz1gy6KO7VJBh+pMmjSD94=
@@ -184,6 +182,7 @@ github.com/google/go-querystring v1.1.0/go.mod h1:Kcdr2DB4koayq7X8pmAG4sNG59So17
 github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e h1:ijClszYn+mADRFY17kjQEVQ1XRhq2/JR1M3sGqeJoxs=
 github.com/google/pprof v0.0.0-20250317173921-a4b03ec1a45e/go.mod h1:boTsfXsheKC2y+lKOCMpSfarhxDeIzfZG1jqGcPl3cA=
+github.com/google/subcommands v1.2.0/go.mod h1:ZjhPrFU+Olkh9WazFPsl27BQ4UPiG37m3yTrtFlrHVk=
 github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
 github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/wire v0.7.0 h1:JxUKI6+CVBgCO2WToKy/nQk0sS+amI9z9EjVmdaocj4=
@@ -203,6 +202,8 @@ github.com/icholy/digest v1.1.0 h1:HfGg9Irj7i+IX1o1QAmPfIBNu/Q5A5Tu3n/MED9k9H4=
 github.com/icholy/digest v1.1.0/go.mod h1:QNrsSGQ5v7v9cReDI0+eyjsXGUoRSUZQHeQ5C4XLa0Y=
 github.com/imroc/req/v3 v3.57.0 h1:LMTUjNRUybUkTPn8oJDq8Kg3JRBOBTcnDhKu7mzupKI=
 github.com/imroc/req/v3 v3.57.0/go.mod h1:JL62ey1nvSLq81HORNcosvlf7SxZStONNqOprg0Pz00=
+github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
+github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
 github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
 github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
 github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
@@ -285,6 +286,10 @@ github.com/pelletier/go-toml/v2 v2.2.2 h1:aYUidT7k73Pcl9nb2gScu7NSrKCSHIDE89b3+6
 github.com/pelletier/go-toml/v2 v2.2.2/go.mod h1:1t835xjRzz80PqgE6HHgN2JOsmgYu/h4qDAS4n929Rs=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pkoukk/tiktoken-go v0.1.8 h1:85ENo+3FpWgAACBaEUVp+lctuTcYUO7BtmfhlN/QTRo=
+github.com/pkoukk/tiktoken-go v0.1.8/go.mod h1:9NiV+i9mJKGj1rYOT+njbv+ZwA/zJxYdewGl6qVatpg=
+github.com/pkoukk/tiktoken-go-loader v0.0.2 h1:LUKws63GV3pVHwH1srkBplBv+7URgmOmhSkRxsIvsK4=
+github.com/pkoukk/tiktoken-go-loader v0.0.2/go.mod h1:4mIkYyZooFlnenDlormIo6cd5wrlUKNr97wp9nGgEKo=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
 github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
@@ -337,6 +342,8 @@ github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSS
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
 github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
 github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
@@ -345,8 +352,6 @@ github.com/stretchr/testify v1.8.1/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o
 github.com/stretchr/testify v1.8.2/go.mod h1:w2LPCIKwWwSfY2zedu0+kehJoqGctiVI29o6fzry7u4=
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
-github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
-github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
 github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
 github.com/subosito/gotenv v1.6.0/go.mod h1:Dk4QP5c2W3ibzajGcXpNraDfq2IrhjMIvMSWPKKo0FU=
 github.com/tam7t/hpkp v0.0.0-20160821193359-2b70b4024ed5 h1:YqAladjX7xpA6BM04leXMWAEjS0mTZ5kUU9KRBriQJc=
@@ -436,11 +441,11 @@ golang.org/x/sys v0.0.0-20210616094352-59db8d763f22/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.0.0-20220704084225-05e143d24a9e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.11.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
 golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/term v0.40.0 h1:36e4zGLqU4yhjlmxEaagx2KuYbJq3EwY8K943ZsHcvg=
 golang.org/x/term v0.40.0/go.mod h1:w2P8uVp06p2iyKKuvXIm7N/y0UCRt3UfJTfZ7oOpglM=

backend/internal/config/config.go

@@ -934,10 +934,9 @@ type DashboardAggregationConfig struct {
 
 // DashboardAggregationRetentionConfig 预聚合保留窗口
 type DashboardAggregationRetentionConfig struct {
-	UsageLogsDays         int `mapstructure:"usage_logs_days"`
-	UsageBillingDedupDays int `mapstructure:"usage_billing_dedup_days"`
-	HourlyDays            int `mapstructure:"hourly_days"`
-	DailyDays             int `mapstructure:"daily_days"`
+	UsageLogsDays int `mapstructure:"usage_logs_days"`
+	HourlyDays    int `mapstructure:"hourly_days"`
+	DailyDays     int `mapstructure:"daily_days"`
 }
 
 // UsageCleanupConfig 使用记录清理任务配置
@@ -1302,7 +1301,6 @@ func setDefaults() {
 	viper.SetDefault("dashboard_aggregation.backfill_enabled", false)
 	viper.SetDefault("dashboard_aggregation.backfill_max_days", 31)
 	viper.SetDefault("dashboard_aggregation.retention.usage_logs_days", 90)
-	viper.SetDefault("dashboard_aggregation.retention.usage_billing_dedup_days", 365)
 	viper.SetDefault("dashboard_aggregation.retention.hourly_days", 180)
 	viper.SetDefault("dashboard_aggregation.retention.daily_days", 730)
 	viper.SetDefault("dashboard_aggregation.recompute_days", 2)
@@ -1760,12 +1758,6 @@ func (c *Config) Validate() error {
 		if c.DashboardAgg.Retention.UsageLogsDays <= 0 {
 			return fmt.Errorf("dashboard_aggregation.retention.usage_logs_days must be positive")
 		}
-		if c.DashboardAgg.Retention.UsageBillingDedupDays <= 0 {
-			return fmt.Errorf("dashboard_aggregation.retention.usage_billing_dedup_days must be positive")
-		}
-		if c.DashboardAgg.Retention.UsageBillingDedupDays < c.DashboardAgg.Retention.UsageLogsDays {
-			return fmt.Errorf("dashboard_aggregation.retention.usage_billing_dedup_days must be greater than or equal to usage_logs_days")
-		}
 		if c.DashboardAgg.Retention.HourlyDays <= 0 {
 			return fmt.Errorf("dashboard_aggregation.retention.hourly_days must be positive")
 		}
@@ -1788,14 +1780,6 @@ func (c *Config) Validate() error {
 		if c.DashboardAgg.Retention.UsageLogsDays < 0 {
 			return fmt.Errorf("dashboard_aggregation.retention.usage_logs_days must be non-negative")
 		}
-		if c.DashboardAgg.Retention.UsageBillingDedupDays < 0 {
-			return fmt.Errorf("dashboard_aggregation.retention.usage_billing_dedup_days must be non-negative")
-		}
-		if c.DashboardAgg.Retention.UsageBillingDedupDays > 0 &&
-			c.DashboardAgg.Retention.UsageLogsDays > 0 &&
-			c.DashboardAgg.Retention.UsageBillingDedupDays < c.DashboardAgg.Retention.UsageLogsDays {
-			return fmt.Errorf("dashboard_aggregation.retention.usage_billing_dedup_days must be greater than or equal to usage_logs_days")
-		}
 		if c.DashboardAgg.Retention.HourlyDays < 0 {
 			return fmt.Errorf("dashboard_aggregation.retention.hourly_days must be non-negative")
 		}

backend/internal/config/config_test.go

@@ -441,9 +441,6 @@ func TestLoadDefaultDashboardAggregationConfig(t *testing.T) {
 	if cfg.DashboardAgg.Retention.UsageLogsDays != 90 {
 		t.Fatalf("DashboardAgg.Retention.UsageLogsDays = %d, want 90", cfg.DashboardAgg.Retention.UsageLogsDays)
 	}
-	if cfg.DashboardAgg.Retention.UsageBillingDedupDays != 365 {
-		t.Fatalf("DashboardAgg.Retention.UsageBillingDedupDays = %d, want 365", cfg.DashboardAgg.Retention.UsageBillingDedupDays)
-	}
 	if cfg.DashboardAgg.Retention.HourlyDays != 180 {
 		t.Fatalf("DashboardAgg.Retention.HourlyDays = %d, want 180", cfg.DashboardAgg.Retention.HourlyDays)
 	}
@@ -1019,23 +1016,6 @@ func TestValidateConfigErrors(t *testing.T) {
 			mutate:  func(c *Config) { c.DashboardAgg.Enabled = true; c.DashboardAgg.Retention.UsageLogsDays = 0 },
 			wantErr: "dashboard_aggregation.retention.usage_logs_days",
 		},
-		{
-			name: "dashboard aggregation dedup retention",
-			mutate: func(c *Config) {
-				c.DashboardAgg.Enabled = true
-				c.DashboardAgg.Retention.UsageBillingDedupDays = 0
-			},
-			wantErr: "dashboard_aggregation.retention.usage_billing_dedup_days",
-		},
-		{
-			name: "dashboard aggregation dedup retention smaller than usage logs",
-			mutate: func(c *Config) {
-				c.DashboardAgg.Enabled = true
-				c.DashboardAgg.Retention.UsageLogsDays = 30
-				c.DashboardAgg.Retention.UsageBillingDedupDays = 29
-			},
-			wantErr: "dashboard_aggregation.retention.usage_billing_dedup_days",
-		},
 		{
 			name:    "dashboard aggregation disabled interval",
 			mutate:  func(c *Config) { c.DashboardAgg.Enabled = false; c.DashboardAgg.IntervalSeconds = -1 },

backend/internal/domain/constants.go

@@ -27,12 +27,10 @@ const (
 
 // Account type constants
 const (
-	AccountTypeOAuth         = "oauth"          // OAuth类型账号（full scope: profile + inference）
-	AccountTypeSetupToken    = "setup-token"    // Setup Token类型账号（inference only scope）
-	AccountTypeAPIKey        = "apikey"         // API Key类型账号
-	AccountTypeUpstream      = "upstream"       // 上游透传类型账号（通过 Base URL + API Key 连接上游）
-	AccountTypeBedrock       = "bedrock"        // AWS Bedrock 类型账号（通过 SigV4 签名连接 Bedrock）
-	AccountTypeBedrockAPIKey = "bedrock-apikey" // AWS Bedrock API Key 类型账号（通过 Bearer Token 连接 Bedrock）
+	AccountTypeOAuth      = "oauth"       // OAuth类型账号（full scope: profile + inference）
+	AccountTypeSetupToken = "setup-token" // Setup Token类型账号（inference only scope）
+	AccountTypeAPIKey     = "apikey"      // API Key类型账号
+	AccountTypeUpstream   = "upstream"    // 上游透传类型账号（通过 Base URL + API Key 连接上游）
 )
 
 // Redeem type constants
@@ -115,27 +113,3 @@ var DefaultAntigravityModelMapping = map[string]string{
 	"gpt-oss-120b-medium":    "gpt-oss-120b-medium",
 	"tab_flash_lite_preview": "tab_flash_lite_preview",
 }
-
-// DefaultBedrockModelMapping 是 AWS Bedrock 平台的默认模型映射
-// 将 Anthropic 标准模型名映射到 Bedrock 模型 ID
-// 注意：此处的 "us." 前缀仅为默认值，ResolveBedrockModelID 会根据账号配置的
-// aws_region 自动调整为匹配的区域前缀（如 eu.、apac.、jp. 等）
-var DefaultBedrockModelMapping = map[string]string{
-	// Claude Opus
-	"claude-opus-4-6-thinking": "us.anthropic.claude-opus-4-6-v1",
-	"claude-opus-4-6":          "us.anthropic.claude-opus-4-6-v1",
-	"claude-opus-4-5-thinking": "us.anthropic.claude-opus-4-5-20251101-v1:0",
-	"claude-opus-4-5-20251101": "us.anthropic.claude-opus-4-5-20251101-v1:0",
-	"claude-opus-4-1":          "us.anthropic.claude-opus-4-1-20250805-v1:0",
-	"claude-opus-4-20250514":   "us.anthropic.claude-opus-4-20250514-v1:0",
-	// Claude Sonnet
-	"claude-sonnet-4-6-thinking": "us.anthropic.claude-sonnet-4-6",
-	"claude-sonnet-4-6":          "us.anthropic.claude-sonnet-4-6",
-	"claude-sonnet-4-5":          "us.anthropic.claude-sonnet-4-5-20250929-v1:0",
-	"claude-sonnet-4-5-thinking": "us.anthropic.claude-sonnet-4-5-20250929-v1:0",
-	"claude-sonnet-4-5-20250929": "us.anthropic.claude-sonnet-4-5-20250929-v1:0",
-	"claude-sonnet-4-20250514":   "us.anthropic.claude-sonnet-4-20250514-v1:0",
-	// Claude Haiku
-	"claude-haiku-4-5":          "us.anthropic.claude-haiku-4-5-20251001-v1:0",
-	"claude-haiku-4-5-20251001": "us.anthropic.claude-haiku-4-5-20251001-v1:0",
-}

backend/internal/handler/admin/account_handler.go

@@ -97,7 +97,7 @@ type CreateAccountRequest struct {
 	Name                    string         `json:"name" binding:"required"`
 	Notes                   *string        `json:"notes"`
 	Platform                string         `json:"platform" binding:"required"`
-	Type                    string         `json:"type" binding:"required,oneof=oauth setup-token apikey upstream bedrock bedrock-apikey"`
+	Type                    string         `json:"type" binding:"required,oneof=oauth setup-token apikey upstream"`
 	Credentials             map[string]any `json:"credentials" binding:"required"`
 	Extra                   map[string]any `json:"extra"`
 	ProxyID                 *int64         `json:"proxy_id"`
@@ -116,7 +116,7 @@ type CreateAccountRequest struct {
 type UpdateAccountRequest struct {
 	Name                    string         `json:"name"`
 	Notes                   *string        `json:"notes"`
-	Type                    string         `json:"type" binding:"omitempty,oneof=oauth setup-token apikey upstream bedrock bedrock-apikey"`
+	Type                    string         `json:"type" binding:"omitempty,oneof=oauth setup-token apikey upstream"`
 	Credentials             map[string]any `json:"credentials"`
 	Extra                   map[string]any `json:"extra"`
 	ProxyID                 *int64         `json:"proxy_id"`
@@ -865,9 +865,6 @@ func (h *AccountHandler) refreshSingleAccount(ctx context.Context, account *serv
 		}
 	}
 
-	// OpenAI OAuth: 刷新成功后检查并设置 privacy_mode
-	h.adminService.EnsureOpenAIPrivacy(ctx, updatedAccount)
-
 	return updatedAccount, "", nil
 }
 
@@ -1341,6 +1338,12 @@ func (h *AccountHandler) BulkUpdate(c *gin.Context) {
 			c.JSON(409, gin.H{
 				"error":   "mixed_channel_warning",
 				"message": mixedErr.Error(),
+				"details": gin.H{
+					"group_id":         mixedErr.GroupID,
+					"group_name":       mixedErr.GroupName,
+					"current_platform": mixedErr.CurrentPlatform,
+					"other_platform":   mixedErr.OtherPlatform,
+				},
 			})
 			return
 		}

backend/internal/handler/admin/account_handler_mixed_channel_test.go

@@ -111,7 +111,7 @@ func TestAccountHandlerCreateMixedChannelConflictSimplifiedResponse(t *testing.T
 	var resp map[string]any
 	require.NoError(t, json.Unmarshal(rec.Body.Bytes(), &resp))
 	require.Equal(t, "mixed_channel_warning", resp["error"])
-	require.Contains(t, resp["message"], "mixed_channel_warning")
+	require.Contains(t, resp["message"], "claude-max")
 	_, hasDetails := resp["details"]
 	_, hasRequireConfirmation := resp["require_confirmation"]
 	require.False(t, hasDetails)
@@ -140,7 +140,7 @@ func TestAccountHandlerUpdateMixedChannelConflictSimplifiedResponse(t *testing.T
 	var resp map[string]any
 	require.NoError(t, json.Unmarshal(rec.Body.Bytes(), &resp))
 	require.Equal(t, "mixed_channel_warning", resp["error"])
-	require.Contains(t, resp["message"], "mixed_channel_warning")
+	require.Contains(t, resp["message"], "claude-max")
 	_, hasDetails := resp["details"]
 	_, hasRequireConfirmation := resp["require_confirmation"]
 	require.False(t, hasDetails)

backend/internal/handler/admin/admin_service_stub_test.go

@@ -179,14 +179,6 @@ func (s *stubAdminService) GetGroupRateMultipliers(_ context.Context, _ int64) (
 	return nil, nil
 }
 
-func (s *stubAdminService) ClearGroupRateMultipliers(_ context.Context, _ int64) error {
-	return nil
-}
-
-func (s *stubAdminService) BatchSetGroupRateMultipliers(_ context.Context, _ int64, _ []service.GroupRateMultiplierInput) error {
-	return nil
-}
-
 func (s *stubAdminService) ListAccounts(ctx context.Context, page, pageSize int, platform, accountType, status, search string, groupID int64) ([]service.Account, int64, error) {
 	return s.accounts, int64(len(s.accounts)), nil
 }
@@ -441,9 +433,5 @@ func (s *stubAdminService) ResetAccountQuota(ctx context.Context, id int64) erro
 	return nil
 }
 
-func (s *stubAdminService) EnsureOpenAIPrivacy(ctx context.Context, account *service.Account) string {
-	return ""
-}
-
 // Ensure stub implements interface.
 var _ service.AdminService = (*stubAdminService)(nil)

backend/internal/handler/admin/dashboard_handler.go

@@ -466,60 +466,9 @@ type BatchUsersUsageRequest struct {
 	UserIDs []int64 `json:"user_ids" binding:"required"`
 }
 
-var dashboardUsersRankingCache = newSnapshotCache(5 * time.Minute)
 var dashboardBatchUsersUsageCache = newSnapshotCache(30 * time.Second)
 var dashboardBatchAPIKeysUsageCache = newSnapshotCache(30 * time.Second)
 
-func parseRankingLimit(raw string) int {
-	limit, err := strconv.Atoi(strings.TrimSpace(raw))
-	if err != nil || limit <= 0 {
-		return 12
-	}
-	if limit > 50 {
-		return 50
-	}
-	return limit
-}
-
-// GetUserSpendingRanking handles getting user spending ranking data.
-// GET /api/v1/admin/dashboard/users-ranking
-func (h *DashboardHandler) GetUserSpendingRanking(c *gin.Context) {
-	startTime, endTime := parseTimeRange(c)
-	limit := parseRankingLimit(c.DefaultQuery("limit", "12"))
-
-	keyRaw, _ := json.Marshal(struct {
-		Start string `json:"start"`
-		End   string `json:"end"`
-		Limit int    `json:"limit"`
-	}{
-		Start: startTime.UTC().Format(time.RFC3339),
-		End:   endTime.UTC().Format(time.RFC3339),
-		Limit: limit,
-	})
-	cacheKey := string(keyRaw)
-	if cached, ok := dashboardUsersRankingCache.Get(cacheKey); ok {
-		c.Header("X-Snapshot-Cache", "hit")
-		response.Success(c, cached.Payload)
-		return
-	}
-
-	ranking, err := h.dashboardService.GetUserSpendingRanking(c.Request.Context(), startTime, endTime, limit)
-	if err != nil {
-		response.Error(c, 500, "Failed to get user spending ranking")
-		return
-	}
-
-	payload := gin.H{
-		"ranking":           ranking.Ranking,
-		"total_actual_cost": ranking.TotalActualCost,
-		"start_date":        startTime.Format("2006-01-02"),
-		"end_date":          endTime.Add(-24 * time.Hour).Format("2006-01-02"),
-	}
-	dashboardUsersRankingCache.Set(cacheKey, payload)
-	c.Header("X-Snapshot-Cache", "miss")
-	response.Success(c, payload)
-}
-
 // GetBatchUsersUsage handles getting usage stats for multiple users
 // POST /api/v1/admin/dashboard/users-usage
 func (h *DashboardHandler) GetBatchUsersUsage(c *gin.Context) {

backend/internal/handler/admin/dashboard_handler_request_type_test.go

@@ -19,9 +19,6 @@ type dashboardUsageRepoCapture struct {
 	trendStream      *bool
 	modelRequestType *int16
 	modelStream      *bool
-	rankingLimit     int
-	ranking          []usagestats.UserSpendingRankingItem
-	rankingTotal     float64
 }
 
 func (s *dashboardUsageRepoCapture) GetUsageTrendWithFilters(
@@ -52,18 +49,6 @@ func (s *dashboardUsageRepoCapture) GetModelStatsWithFilters(
 	return []usagestats.ModelStat{}, nil
 }
 
-func (s *dashboardUsageRepoCapture) GetUserSpendingRanking(
-	ctx context.Context,
-	startTime, endTime time.Time,
-	limit int,
-) (*usagestats.UserSpendingRankingResponse, error) {
-	s.rankingLimit = limit
-	return &usagestats.UserSpendingRankingResponse{
-		Ranking:         s.ranking,
-		TotalActualCost: s.rankingTotal,
-	}, nil
-}
-
 func newDashboardRequestTypeTestRouter(repo *dashboardUsageRepoCapture) *gin.Engine {
 	gin.SetMode(gin.TestMode)
 	dashboardSvc := service.NewDashboardService(repo, nil, nil, nil)
@@ -71,7 +56,6 @@ func newDashboardRequestTypeTestRouter(repo *dashboardUsageRepoCapture) *gin.Eng
 	router := gin.New()
 	router.GET("/admin/dashboard/trend", handler.GetUsageTrend)
 	router.GET("/admin/dashboard/models", handler.GetModelStats)
-	router.GET("/admin/dashboard/users-ranking", handler.GetUserSpendingRanking)
 	return router
 }
 
@@ -146,30 +130,3 @@ func TestDashboardModelStatsInvalidStream(t *testing.T) {
 
 	require.Equal(t, http.StatusBadRequest, rec.Code)
 }
-
-func TestDashboardUsersRankingLimitAndCache(t *testing.T) {
-	dashboardUsersRankingCache = newSnapshotCache(5 * time.Minute)
-	repo := &dashboardUsageRepoCapture{
-		ranking: []usagestats.UserSpendingRankingItem{
-			{UserID: 7, Email: "rank@example.com", ActualCost: 10.5, Requests: 3, Tokens: 300},
-		},
-		rankingTotal: 88.8,
-	}
-	router := newDashboardRequestTypeTestRouter(repo)
-
-	req := httptest.NewRequest(http.MethodGet, "/admin/dashboard/users-ranking?limit=100&start_date=2025-01-01&end_date=2025-01-02", nil)
-	rec := httptest.NewRecorder()
-	router.ServeHTTP(rec, req)
-
-	require.Equal(t, http.StatusOK, rec.Code)
-	require.Equal(t, 50, repo.rankingLimit)
-	require.Contains(t, rec.Body.String(), "\"total_actual_cost\":88.8")
-	require.Equal(t, "miss", rec.Header().Get("X-Snapshot-Cache"))
-
-	req2 := httptest.NewRequest(http.MethodGet, "/admin/dashboard/users-ranking?limit=100&start_date=2025-01-01&end_date=2025-01-02", nil)
-	rec2 := httptest.NewRecorder()
-	router.ServeHTTP(rec2, req2)
-
-	require.Equal(t, http.StatusOK, rec2.Code)
-	require.Equal(t, "hit", rec2.Header().Get("X-Snapshot-Cache"))
-}

backend/internal/handler/admin/group_handler.go

@@ -46,9 +46,10 @@ type CreateGroupRequest struct {
 	FallbackGroupID                 *int64   `json:"fallback_group_id"`
 	FallbackGroupIDOnInvalidRequest *int64   `json:"fallback_group_id_on_invalid_request"`
 	// 模型路由配置（仅 anthropic 平台使用）
-	ModelRouting        map[string][]int64 `json:"model_routing"`
-	ModelRoutingEnabled bool               `json:"model_routing_enabled"`
-	MCPXMLInject        *bool              `json:"mcp_xml_inject"`
+	ModelRouting             map[string][]int64 `json:"model_routing"`
+	ModelRoutingEnabled      bool               `json:"model_routing_enabled"`
+	MCPXMLInject             *bool              `json:"mcp_xml_inject"`
+	SimulateClaudeMaxEnabled *bool              `json:"simulate_claude_max_enabled"`
 	// 支持的模型系列（仅 antigravity 平台使用）
 	SupportedModelScopes []string `json:"supported_model_scopes"`
 	// Sora 存储配额
@@ -84,9 +85,10 @@ type UpdateGroupRequest struct {
 	FallbackGroupID                 *int64   `json:"fallback_group_id"`
 	FallbackGroupIDOnInvalidRequest *int64   `json:"fallback_group_id_on_invalid_request"`
 	// 模型路由配置（仅 anthropic 平台使用）
-	ModelRouting        map[string][]int64 `json:"model_routing"`
-	ModelRoutingEnabled *bool              `json:"model_routing_enabled"`
-	MCPXMLInject        *bool              `json:"mcp_xml_inject"`
+	ModelRouting             map[string][]int64 `json:"model_routing"`
+	ModelRoutingEnabled      *bool              `json:"model_routing_enabled"`
+	MCPXMLInject             *bool              `json:"mcp_xml_inject"`
+	SimulateClaudeMaxEnabled *bool              `json:"simulate_claude_max_enabled"`
 	// 支持的模型系列（仅 antigravity 平台使用）
 	SupportedModelScopes *[]string `json:"supported_model_scopes"`
 	// Sora 存储配额
@@ -207,6 +209,7 @@ func (h *GroupHandler) Create(c *gin.Context) {
 		ModelRouting:                    req.ModelRouting,
 		ModelRoutingEnabled:             req.ModelRoutingEnabled,
 		MCPXMLInject:                    req.MCPXMLInject,
+		SimulateClaudeMaxEnabled:        req.SimulateClaudeMaxEnabled,
 		SupportedModelScopes:            req.SupportedModelScopes,
 		SoraStorageQuotaBytes:           req.SoraStorageQuotaBytes,
 		AllowMessagesDispatch:           req.AllowMessagesDispatch,
@@ -260,6 +263,7 @@ func (h *GroupHandler) Update(c *gin.Context) {
 		ModelRouting:                    req.ModelRouting,
 		ModelRoutingEnabled:             req.ModelRoutingEnabled,
 		MCPXMLInject:                    req.MCPXMLInject,
+		SimulateClaudeMaxEnabled:        req.SimulateClaudeMaxEnabled,
 		SupportedModelScopes:            req.SupportedModelScopes,
 		SoraStorageQuotaBytes:           req.SoraStorageQuotaBytes,
 		AllowMessagesDispatch:           req.AllowMessagesDispatch,
@@ -356,51 +360,6 @@ func (h *GroupHandler) GetGroupRateMultipliers(c *gin.Context) {
 	response.Success(c, entries)
 }
 
-// ClearGroupRateMultipliers handles clearing all rate multipliers for a group
-// DELETE /api/v1/admin/groups/:id/rate-multipliers
-func (h *GroupHandler) ClearGroupRateMultipliers(c *gin.Context) {
-	groupID, err := strconv.ParseInt(c.Param("id"), 10, 64)
-	if err != nil {
-		response.BadRequest(c, "Invalid group ID")
-		return
-	}
-
-	if err := h.adminService.ClearGroupRateMultipliers(c.Request.Context(), groupID); err != nil {
-		response.ErrorFrom(c, err)
-		return
-	}
-
-	response.Success(c, gin.H{"message": "Rate multipliers cleared successfully"})
-}
-
-// BatchSetGroupRateMultipliersRequest represents batch set rate multipliers request
-type BatchSetGroupRateMultipliersRequest struct {
-	Entries []service.GroupRateMultiplierInput `json:"entries" binding:"required"`
-}
-
-// BatchSetGroupRateMultipliers handles batch setting rate multipliers for a group
-// PUT /api/v1/admin/groups/:id/rate-multipliers
-func (h *GroupHandler) BatchSetGroupRateMultipliers(c *gin.Context) {
-	groupID, err := strconv.ParseInt(c.Param("id"), 10, 64)
-	if err != nil {
-		response.BadRequest(c, "Invalid group ID")
-		return
-	}
-
-	var req BatchSetGroupRateMultipliersRequest
-	if err := c.ShouldBindJSON(&req); err != nil {
-		response.BadRequest(c, "Invalid request: "+err.Error())
-		return
-	}
-
-	if err := h.adminService.BatchSetGroupRateMultipliers(c.Request.Context(), groupID, req.Entries); err != nil {
-		response.ErrorFrom(c, err)
-		return
-	}
-
-	response.Success(c, gin.H{"message": "Rate multipliers updated successfully"})
-}
-
 // UpdateSortOrderRequest represents the request to update group sort orders
 type UpdateSortOrderRequest struct {
 	Updates []struct {

backend/internal/handler/admin/openai_oauth_handler.go

@@ -289,7 +289,6 @@ func (h *OpenAIOAuthHandler) CreateAccountFromOAuth(c *gin.Context) {
 		Platform:    platform,
 		Type:        "oauth",
 		Credentials: credentials,
-		Extra:       nil,
 		ProxyID:     req.ProxyID,
 		Concurrency: req.Concurrency,
 		Priority:    req.Priority,

backend/internal/handler/admin/redeem_handler.go

@@ -41,15 +41,12 @@ type GenerateRedeemCodesRequest struct {
 }
 
 // CreateAndRedeemCodeRequest represents creating a fixed code and redeeming it for a target user.
-// Type 为 omitempty 而非 required 是为了向后兼容旧版调用方（不传 type 时默认 balance）。
 type CreateAndRedeemCodeRequest struct {
-	Code         string  `json:"code" binding:"required,min=3,max=128"`
-	Type         string  `json:"type" binding:"omitempty,oneof=balance concurrency subscription invitation"` // 不传时默认 balance（向后兼容）
-	Value        float64 `json:"value" binding:"required,gt=0"`
-	UserID       int64   `json:"user_id" binding:"required,gt=0"`
-	GroupID      *int64  `json:"group_id"`                                    // subscription 类型必填
-	ValidityDays int     `json:"validity_days" binding:"omitempty,max=36500"` // subscription 类型必填，>0
-	Notes        string  `json:"notes"`
+	Code   string  `json:"code" binding:"required,min=3,max=128"`
+	Type   string  `json:"type" binding:"required,oneof=balance concurrency subscription invitation"`
+	Value  float64 `json:"value" binding:"required,gt=0"`
+	UserID int64   `json:"user_id" binding:"required,gt=0"`
+	Notes  string  `json:"notes"`
 }
 
 // List handles listing all redeem codes with pagination
@@ -139,22 +136,6 @@ func (h *RedeemHandler) CreateAndRedeem(c *gin.Context) {
 		return
 	}
 	req.Code = strings.TrimSpace(req.Code)
-	// 向后兼容：旧版调用方（如 Sub2ApiPay）不传 type 字段，默认当作 balance 充值处理。
-	// 请勿删除此默认值逻辑，否则会导致旧版调用方 400 报错。
-	if req.Type == "" {
-		req.Type = "balance"
-	}
-
-	if req.Type == "subscription" {
-		if req.GroupID == nil {
-			response.BadRequest(c, "group_id is required for subscription type")
-			return
-		}
-		if req.ValidityDays <= 0 {
-			response.BadRequest(c, "validity_days must be greater than 0 for subscription type")
-			return
-		}
-	}
 
 	executeAdminIdempotentJSON(c, "admin.redeem_codes.create_and_redeem", req, service.DefaultWriteIdempotencyTTL(), func(ctx context.Context) (any, error) {
 		existing, err := h.redeemService.GetByCode(ctx, req.Code)
@@ -166,13 +147,11 @@ func (h *RedeemHandler) CreateAndRedeem(c *gin.Context) {
 		}
 
 		createErr := h.redeemService.CreateCode(ctx, &service.RedeemCode{
-			Code:         req.Code,
-			Type:         req.Type,
-			Value:        req.Value,
-			Status:       service.StatusUnused,
-			Notes:        req.Notes,
-			GroupID:      req.GroupID,
-			ValidityDays: req.ValidityDays,
+			Code:   req.Code,
+			Type:   req.Type,
+			Value:  req.Value,
+			Status: service.StatusUnused,
+			Notes:  req.Notes,
 		})
 		if createErr != nil {
 			// Unique code race: if code now exists, use idempotent semantics by used_by.

backend/internal/handler/admin/redeem_handler_test.go

@@ -1,135 +0,0 @@
-package admin
-
-import (
-	"bytes"
-	"encoding/json"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	"github.com/Wei-Shaw/sub2api/internal/service"
-	"github.com/gin-gonic/gin"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-// newCreateAndRedeemHandler creates a RedeemHandler with a non-nil (but minimal)
-// RedeemService so that CreateAndRedeem's nil guard passes and we can test the
-// parameter-validation layer that runs before any service call.
-func newCreateAndRedeemHandler() *RedeemHandler {
-	return &RedeemHandler{
-		adminService:  newStubAdminService(),
-		redeemService: &service.RedeemService{}, // non-nil to pass nil guard
-	}
-}
-
-// postCreateAndRedeemValidation calls CreateAndRedeem and returns the response
-// status code. For cases that pass validation and proceed into the service layer,
-// a panic may occur (because RedeemService internals are nil); this is expected
-// and treated as "validation passed" (returns 0 to indicate panic).
-func postCreateAndRedeemValidation(t *testing.T, handler *RedeemHandler, body any) (code int) {
-	t.Helper()
-	gin.SetMode(gin.TestMode)
-	w := httptest.NewRecorder()
-	c, _ := gin.CreateTestContext(w)
-
-	jsonBytes, err := json.Marshal(body)
-	require.NoError(t, err)
-	c.Request, _ = http.NewRequest(http.MethodPost, "/api/v1/admin/redeem-codes/create-and-redeem", bytes.NewReader(jsonBytes))
-	c.Request.Header.Set("Content-Type", "application/json")
-
-	defer func() {
-		if r := recover(); r != nil {
-			// Panic means we passed validation and entered service layer (expected for minimal stub).
-			code = 0
-		}
-	}()
-	handler.CreateAndRedeem(c)
-	return w.Code
-}
-
-func TestCreateAndRedeem_TypeDefaultsToBalance(t *testing.T) {
-	// 不传 type 字段时应默认 balance，不触发 subscription 校验。
-	// 验证通过后进入 service 层会 panic（返回 0），说明默认值生效。
-	h := newCreateAndRedeemHandler()
-	code := postCreateAndRedeemValidation(t, h, map[string]any{
-		"code":    "test-balance-default",
-		"value":   10.0,
-		"user_id": 1,
-	})
-
-	assert.NotEqual(t, http.StatusBadRequest, code,
-		"omitting type should default to balance and pass validation")
-}
-
-func TestCreateAndRedeem_SubscriptionRequiresGroupID(t *testing.T) {
-	h := newCreateAndRedeemHandler()
-	code := postCreateAndRedeemValidation(t, h, map[string]any{
-		"code":          "test-sub-no-group",
-		"type":          "subscription",
-		"value":         29.9,
-		"user_id":       1,
-		"validity_days": 30,
-		// group_id 缺失
-	})
-
-	assert.Equal(t, http.StatusBadRequest, code)
-}
-
-func TestCreateAndRedeem_SubscriptionRequiresPositiveValidityDays(t *testing.T) {
-	groupID := int64(5)
-	h := newCreateAndRedeemHandler()
-
-	cases := []struct {
-		name         string
-		validityDays int
-	}{
-		{"zero", 0},
-		{"negative", -1},
-	}
-
-	for _, tc := range cases {
-		t.Run(tc.name, func(t *testing.T) {
-			code := postCreateAndRedeemValidation(t, h, map[string]any{
-				"code":          "test-sub-bad-days-" + tc.name,
-				"type":          "subscription",
-				"value":         29.9,
-				"user_id":       1,
-				"group_id":      groupID,
-				"validity_days": tc.validityDays,
-			})
-
-			assert.Equal(t, http.StatusBadRequest, code)
-		})
-	}
-}
-
-func TestCreateAndRedeem_SubscriptionValidParamsPassValidation(t *testing.T) {
-	groupID := int64(5)
-	h := newCreateAndRedeemHandler()
-	code := postCreateAndRedeemValidation(t, h, map[string]any{
-		"code":          "test-sub-valid",
-		"type":          "subscription",
-		"value":         29.9,
-		"user_id":       1,
-		"group_id":      groupID,
-		"validity_days": 31,
-	})
-
-	assert.NotEqual(t, http.StatusBadRequest, code,
-		"valid subscription params should pass validation")
-}
-
-func TestCreateAndRedeem_BalanceIgnoresSubscriptionFields(t *testing.T) {
-	h := newCreateAndRedeemHandler()
-	// balance 类型不传 group_id 和 validity_days，不应报 400
-	code := postCreateAndRedeemValidation(t, h, map[string]any{
-		"code":    "test-balance-no-extras",
-		"type":    "balance",
-		"value":   50.0,
-		"user_id": 1,
-	})
-
-	assert.NotEqual(t, http.StatusBadRequest, code,
-		"balance type should not require group_id or validity_days")
-}

backend/internal/handler/admin/subscription_handler.go

@@ -218,12 +218,11 @@ func (h *SubscriptionHandler) Extend(c *gin.Context) {
 
 // ResetSubscriptionQuotaRequest represents the reset quota request
 type ResetSubscriptionQuotaRequest struct {
-	Daily   bool `json:"daily"`
-	Weekly  bool `json:"weekly"`
-	Monthly bool `json:"monthly"`
+	Daily  bool `json:"daily"`
+	Weekly bool `json:"weekly"`
 }
 
-// ResetQuota resets daily, weekly, and/or monthly usage for a subscription.
+// ResetQuota resets daily and/or weekly usage for a subscription.
 // POST /api/v1/admin/subscriptions/:id/reset-quota
 func (h *SubscriptionHandler) ResetQuota(c *gin.Context) {
 	subscriptionID, err := strconv.ParseInt(c.Param("id"), 10, 64)
@@ -236,11 +235,11 @@ func (h *SubscriptionHandler) ResetQuota(c *gin.Context) {
 		response.BadRequest(c, "Invalid request: "+err.Error())
 		return
 	}
-	if !req.Daily && !req.Weekly && !req.Monthly {
-		response.BadRequest(c, "At least one of 'daily', 'weekly', or 'monthly' must be true")
+	if !req.Daily && !req.Weekly {
+		response.BadRequest(c, "At least one of 'daily' or 'weekly' must be true")
 		return
 	}
-	sub, err := h.subscriptionService.AdminResetQuota(c.Request.Context(), subscriptionID, req.Daily, req.Weekly, req.Monthly)
+	sub, err := h.subscriptionService.AdminResetQuota(c.Request.Context(), subscriptionID, req.Daily, req.Weekly)
 	if err != nil {
 		response.ErrorFrom(c, err)
 		return

backend/internal/handler/dto/mappers.go

@@ -135,14 +135,15 @@ func GroupFromServiceAdmin(g *service.Group) *AdminGroup {
 		return nil
 	}
 	out := &AdminGroup{
-		Group:                groupFromServiceBase(g),
-		ModelRouting:         g.ModelRouting,
-		ModelRoutingEnabled:  g.ModelRoutingEnabled,
-		MCPXMLInject:         g.MCPXMLInject,
-		DefaultMappedModel:   g.DefaultMappedModel,
-		SupportedModelScopes: g.SupportedModelScopes,
-		AccountCount:         g.AccountCount,
-		SortOrder:            g.SortOrder,
+		Group:                    groupFromServiceBase(g),
+		ModelRouting:             g.ModelRouting,
+		ModelRoutingEnabled:      g.ModelRoutingEnabled,
+		MCPXMLInject:             g.MCPXMLInject,
+		DefaultMappedModel:       g.DefaultMappedModel,
+		SimulateClaudeMaxEnabled: g.SimulateClaudeMaxEnabled,
+		SupportedModelScopes:     g.SupportedModelScopes,
+		AccountCount:             g.AccountCount,
+		SortOrder:                g.SortOrder,
 	}
 	if len(g.AccountGroups) > 0 {
 		out.AccountGroups = make([]AccountGroup, 0, len(g.AccountGroups))

backend/internal/handler/dto/types.go

@@ -117,6 +117,8 @@ type AdminGroup struct {
 
 	// MCP XML 协议注入（仅 antigravity 平台使用）
 	MCPXMLInject bool `json:"mcp_xml_inject"`
+	// Claude usage 模拟开关（仅管理员可见）
+	SimulateClaudeMaxEnabled bool `json:"simulate_claude_max_enabled"`
 
 	// OpenAI Messages 调度配置（仅 openai 平台使用）
 	DefaultMappedModel string `json:"default_mapped_model"`

backend/internal/handler/gateway_handler.go

@@ -434,21 +434,20 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 			// 捕获请求信息（用于异步记录，避免在 goroutine 中访问 gin.Context）
 			userAgent := c.GetHeader("User-Agent")
 			clientIP := ip.GetClientIP(c)
-			requestPayloadHash := service.HashUsageRequestPayload(body)
 
 			// 使用量记录通过有界 worker 池提交，避免请求热路径创建无界 goroutine。
 			h.submitUsageRecordTask(func(ctx context.Context) {
 				if err := h.gatewayService.RecordUsage(ctx, &service.RecordUsageInput{
-					Result:             result,
-					APIKey:             apiKey,
-					User:               apiKey.User,
-					Account:            account,
-					Subscription:       subscription,
-					UserAgent:          userAgent,
-					IPAddress:          clientIP,
-					RequestPayloadHash: requestPayloadHash,
-					ForceCacheBilling:  fs.ForceCacheBilling,
-					APIKeyService:      h.apiKeyService,
+					Result:            result,
+					ParsedRequest:     parsedReq,
+					APIKey:            apiKey,
+					User:              apiKey.User,
+					Account:           account,
+					Subscription:      subscription,
+					UserAgent:         userAgent,
+					IPAddress:         clientIP,
+					ForceCacheBilling: fs.ForceCacheBilling,
+					APIKeyService:     h.apiKeyService,
 				}); err != nil {
 					logger.L().With(
 						zap.String("component", "handler.gateway.messages"),
@@ -632,6 +631,7 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 			// ===== 用户消息串行队列 END =====
 
 			// 转发请求 - 根据账号平台分流
+			c.Set("parsed_request", parsedReq)
 			var result *service.ForwardResult
 			requestCtx := c.Request.Context()
 			if fs.SwitchCount > 0 {
@@ -738,21 +738,20 @@ func (h *GatewayHandler) Messages(c *gin.Context) {
 			// 捕获请求信息（用于异步记录，避免在 goroutine 中访问 gin.Context）
 			userAgent := c.GetHeader("User-Agent")
 			clientIP := ip.GetClientIP(c)
-			requestPayloadHash := service.HashUsageRequestPayload(body)
 
 			// 使用量记录通过有界 worker 池提交，避免请求热路径创建无界 goroutine。
 			h.submitUsageRecordTask(func(ctx context.Context) {
 				if err := h.gatewayService.RecordUsage(ctx, &service.RecordUsageInput{
-					Result:             result,
-					APIKey:             currentAPIKey,
-					User:               currentAPIKey.User,
-					Account:            account,
-					Subscription:       currentSubscription,
-					UserAgent:          userAgent,
-					IPAddress:          clientIP,
-					RequestPayloadHash: requestPayloadHash,
-					ForceCacheBilling:  fs.ForceCacheBilling,
-					APIKeyService:      h.apiKeyService,
+					Result:            result,
+					ParsedRequest:     parsedReq,
+					APIKey:            currentAPIKey,
+					User:              currentAPIKey.User,
+					Account:           account,
+					Subscription:      currentSubscription,
+					UserAgent:         userAgent,
+					IPAddress:         clientIP,
+					ForceCacheBilling: fs.ForceCacheBilling,
+					APIKeyService:     h.apiKeyService,
 				}); err != nil {
 					logger.L().With(
 						zap.String("component", "handler.gateway.messages"),

backend/internal/handler/gateway_handler_warmup_intercept_unit_test.go

@@ -139,7 +139,6 @@ func newTestGatewayHandler(t *testing.T, group *service.Group, accounts []*servi
 		nil, // accountRepo (not used: scheduler snapshot hit)
 		&fakeGroupRepo{group: group},
 		nil, // usageLogRepo
-		nil, // usageBillingRepo
 		nil, // userRepo
 		nil, // userSubRepo
 		nil, // userGroupRateRepo

backend/internal/handler/gemini_v1beta_handler.go

@@ -503,7 +503,6 @@ func (h *GatewayHandler) GeminiV1BetaModels(c *gin.Context) {
 		}
 
 		// 使用量记录通过有界 worker 池提交，避免请求热路径创建无界 goroutine。
-		requestPayloadHash := service.HashUsageRequestPayload(body)
 		h.submitUsageRecordTask(func(ctx context.Context) {
 			if err := h.gatewayService.RecordUsageWithLongContext(ctx, &service.RecordUsageLongContextInput{
 				Result:                result,
@@ -513,7 +512,6 @@ func (h *GatewayHandler) GeminiV1BetaModels(c *gin.Context) {
 				Subscription:          subscription,
 				UserAgent:             userAgent,
 				IPAddress:             clientIP,
-				RequestPayloadHash:    requestPayloadHash,
 				LongContextThreshold:  200000, // Gemini 200K 阈值
 				LongContextMultiplier: 2.0,    // 超出部分双倍计费
 				ForceCacheBilling:     fs.ForceCacheBilling,

backend/internal/handler/openai_gateway_handler.go

@@ -352,20 +352,18 @@ func (h *OpenAIGatewayHandler) Responses(c *gin.Context) {
 		// 捕获请求信息（用于异步记录，避免在 goroutine 中访问 gin.Context）
 		userAgent := c.GetHeader("User-Agent")
 		clientIP := ip.GetClientIP(c)
-		requestPayloadHash := service.HashUsageRequestPayload(body)
 
 		// 使用量记录通过有界 worker 池提交，避免请求热路径创建无界 goroutine。
 		h.submitUsageRecordTask(func(ctx context.Context) {
 			if err := h.gatewayService.RecordUsage(ctx, &service.OpenAIRecordUsageInput{
-				Result:             result,
-				APIKey:             apiKey,
-				User:               apiKey.User,
-				Account:            account,
-				Subscription:       subscription,
-				UserAgent:          userAgent,
-				IPAddress:          clientIP,
-				RequestPayloadHash: requestPayloadHash,
-				APIKeyService:      h.apiKeyService,
+				Result:        result,
+				APIKey:        apiKey,
+				User:          apiKey.User,
+				Account:       account,
+				Subscription:  subscription,
+				UserAgent:     userAgent,
+				IPAddress:     clientIP,
+				APIKeyService: h.apiKeyService,
 			}); err != nil {
 				logger.L().With(
 					zap.String("component", "handler.openai_gateway.responses"),
@@ -734,19 +732,17 @@ func (h *OpenAIGatewayHandler) Messages(c *gin.Context) {
 
 		userAgent := c.GetHeader("User-Agent")
 		clientIP := ip.GetClientIP(c)
-		requestPayloadHash := service.HashUsageRequestPayload(body)
 
 		h.submitUsageRecordTask(func(ctx context.Context) {
 			if err := h.gatewayService.RecordUsage(ctx, &service.OpenAIRecordUsageInput{
-				Result:             result,
-				APIKey:             apiKey,
-				User:               apiKey.User,
-				Account:            account,
-				Subscription:       subscription,
-				UserAgent:          userAgent,
-				IPAddress:          clientIP,
-				RequestPayloadHash: requestPayloadHash,
-				APIKeyService:      h.apiKeyService,
+				Result:        result,
+				APIKey:        apiKey,
+				User:          apiKey.User,
+				Account:       account,
+				Subscription:  subscription,
+				UserAgent:     userAgent,
+				IPAddress:     clientIP,
+				APIKeyService: h.apiKeyService,
 			}); err != nil {
 				logger.L().With(
 					zap.String("component", "handler.openai_gateway.messages"),
@@ -1235,15 +1231,14 @@ func (h *OpenAIGatewayHandler) ResponsesWebSocket(c *gin.Context) {
 			h.gatewayService.ReportOpenAIAccountScheduleResult(account.ID, true, result.FirstTokenMs)
 			h.submitUsageRecordTask(func(taskCtx context.Context) {
 				if err := h.gatewayService.RecordUsage(taskCtx, &service.OpenAIRecordUsageInput{
-					Result:             result,
-					APIKey:             apiKey,
-					User:               apiKey.User,
-					Account:            account,
-					Subscription:       subscription,
-					UserAgent:          userAgent,
-					IPAddress:          clientIP,
-					RequestPayloadHash: service.HashUsageRequestPayload(firstMessage),
-					APIKeyService:      h.apiKeyService,
+					Result:        result,
+					APIKey:        apiKey,
+					User:          apiKey.User,
+					Account:       account,
+					Subscription:  subscription,
+					UserAgent:     userAgent,
+					IPAddress:     clientIP,
+					APIKeyService: h.apiKeyService,
 				}); err != nil {
 					reqLog.Error("openai.websocket_record_usage_failed",
 						zap.Int64("account_id", account.ID),

backend/internal/handler/sora_client_handler_test.go

@@ -2206,7 +2206,7 @@ func (s *stubSoraClientForHandler) GetVideoTask(_ context.Context, _ *service.Ac
 // newMinimalGatewayService 创建仅包含 accountRepo 的最小 GatewayService（用于测试 SelectAccountForModel）。
 func newMinimalGatewayService(accountRepo service.AccountRepository) *service.GatewayService {
 	return service.NewGatewayService(
-		accountRepo, nil, nil, nil, nil, nil, nil, nil, nil,
+		accountRepo, nil, nil, nil, nil, nil, nil, nil,
 		nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil,
 	)
 }

backend/internal/handler/sora_gateway_handler.go

@@ -399,19 +399,17 @@ func (h *SoraGatewayHandler) ChatCompletions(c *gin.Context) {
 
 		userAgent := c.GetHeader("User-Agent")
 		clientIP := ip.GetClientIP(c)
-		requestPayloadHash := service.HashUsageRequestPayload(body)
 
 		// 使用量记录通过有界 worker 池提交，避免请求热路径创建无界 goroutine。
 		h.submitUsageRecordTask(func(ctx context.Context) {
 			if err := h.gatewayService.RecordUsage(ctx, &service.RecordUsageInput{
-				Result:             result,
-				APIKey:             apiKey,
-				User:               apiKey.User,
-				Account:            account,
-				Subscription:       subscription,
-				UserAgent:          userAgent,
-				IPAddress:          clientIP,
-				RequestPayloadHash: requestPayloadHash,
+				Result:       result,
+				APIKey:       apiKey,
+				User:         apiKey.User,
+				Account:      account,
+				Subscription: subscription,
+				UserAgent:    userAgent,
+				IPAddress:    clientIP,
 			}); err != nil {
 				logger.L().With(
 					zap.String("component", "handler.sora_gateway.chat_completions"),

backend/internal/handler/sora_gateway_handler_test.go

@@ -343,9 +343,6 @@ func (s *stubUsageLogRepo) GetAPIKeyUsageTrend(ctx context.Context, startTime, e
 func (s *stubUsageLogRepo) GetUserUsageTrend(ctx context.Context, startTime, endTime time.Time, granularity string, limit int) ([]usagestats.UserUsageTrendPoint, error) {
 	return nil, nil
 }
-func (s *stubUsageLogRepo) GetUserSpendingRanking(ctx context.Context, startTime, endTime time.Time, limit int) (*usagestats.UserSpendingRankingResponse, error) {
-	return nil, nil
-}
 func (s *stubUsageLogRepo) GetBatchUserUsageStats(ctx context.Context, userIDs []int64, startTime, endTime time.Time) (map[int64]*usagestats.BatchUserUsageStats, error) {
 	return nil, nil
 }
@@ -434,7 +431,6 @@ func TestSoraGatewayHandler_ChatCompletions(t *testing.T) {
 		nil,
 		nil,
 		nil,
-		nil,
 		testutil.StubGatewayCache{},
 		cfg,
 		nil,

backend/internal/pkg/antigravity/gemini_types.go

@@ -189,5 +189,6 @@ var DefaultStopSequences = []string{
 	"<|user|>",
 	"<|endoftext|>",
 	"<|end_of_turn|>",
+	"[DONE]",
 	"\n\nHuman:",
 }

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
@@ -45,6 +49,25 @@ func NewStreamingProcessor(originalModel string) *StreamingProcessor {
 	}
 }
 
+// SetUsageMapHook sets an optional hook that modifies usage maps before they are emitted.
+func (p *StreamingProcessor) SetUsageMapHook(fn UsageMapHook) {
+	p.usageMapHook = fn
+}
+
+func usageToMap(u ClaudeUsage) map[string]any {
+	m := map[string]any{
+		"input_tokens":  u.InputTokens,
+		"output_tokens": u.OutputTokens,
+	}
+	if u.CacheCreationInputTokens > 0 {
+		m["cache_creation_input_tokens"] = u.CacheCreationInputTokens
+	}
+	if u.CacheReadInputTokens > 0 {
+		m["cache_read_input_tokens"] = u.CacheReadInputTokens
+	}
+	return m
+}
+
 // ProcessLine 处理 SSE 行，返回 Claude SSE 事件
 func (p *StreamingProcessor) ProcessLine(line string) []byte {
 	line = strings.TrimSpace(line)
@@ -168,6 +191,13 @@ func (p *StreamingProcessor) emitMessageStart(v1Resp *V1InternalResponse) []byte
 		responseID = "msg_" + generateRandomID()
 	}
 
+	var usageValue any = usage
+	if p.usageMapHook != nil {
+		usageMap := usageToMap(usage)
+		p.usageMapHook(usageMap)
+		usageValue = usageMap
+	}
+
 	message := map[string]any{
 		"id":            responseID,
 		"type":          "message",
@@ -176,7 +206,7 @@ func (p *StreamingProcessor) emitMessageStart(v1Resp *V1InternalResponse) []byte
 		"model":         p.originalModel,
 		"stop_reason":   nil,
 		"stop_sequence": nil,
-		"usage":         usage,
+		"usage":         usageValue,
 	}
 
 	event := map[string]any{
@@ -487,13 +517,20 @@ func (p *StreamingProcessor) emitFinish(finishReason string) []byte {
 		CacheReadInputTokens: p.cacheReadTokens,
 	}
 
+	var usageValue any = usage
+	if p.usageMapHook != nil {
+		usageMap := usageToMap(usage)
+		p.usageMapHook(usageMap)
+		usageValue = usageMap
+	}
+
 	deltaEvent := map[string]any{
 		"type": "message_delta",
 		"delta": map[string]any{
 			"stop_reason":   stopReason,
 			"stop_sequence": nil,
 		},
-		"usage": usage,
+		"usage": usageValue,
 	}
 
 	_, _ = result.Write(p.formatSSE("message_delta", deltaEvent))

backend/internal/pkg/usagestats/usage_log_types.go

@@ -96,28 +96,12 @@ type UserUsageTrendPoint struct {
 	Date       string  `json:"date"`
 	UserID     int64   `json:"user_id"`
 	Email      string  `json:"email"`
-	Username   string  `json:"username"`
 	Requests   int64   `json:"requests"`
 	Tokens     int64   `json:"tokens"`
 	Cost       float64 `json:"cost"`        // 标准计费
 	ActualCost float64 `json:"actual_cost"` // 实际扣除
 }
 
-// UserSpendingRankingItem represents a user spending ranking row.
-type UserSpendingRankingItem struct {
-	UserID     int64   `json:"user_id"`
-	Email      string  `json:"email"`
-	ActualCost float64 `json:"actual_cost"` // 实际扣除
-	Requests   int64   `json:"requests"`
-	Tokens     int64   `json:"tokens"`
-}
-
-// UserSpendingRankingResponse represents ranking rows plus total spend for the time range.
-type UserSpendingRankingResponse struct {
-	Ranking         []UserSpendingRankingItem `json:"ranking"`
-	TotalActualCost float64                   `json:"total_actual_cost"`
-}
-
 // APIKeyUsageTrendPoint represents API key usage trend data point
 type APIKeyUsageTrendPoint struct {
 	Date     string `json:"date"`

backend/internal/repository/api_key_repo.go

@@ -164,6 +164,7 @@ func (r *apiKeyRepository) GetByKeyForAuth(ctx context.Context, key string) (*se
 				group.FieldModelRoutingEnabled,
 				group.FieldModelRouting,
 				group.FieldMcpXMLInject,
+				group.FieldSimulateClaudeMaxEnabled,
 				group.FieldSupportedModelScopes,
 				group.FieldAllowMessagesDispatch,
 				group.FieldDefaultMappedModel,
@@ -645,6 +646,7 @@ func groupEntityToService(g *dbent.Group) *service.Group {
 		ModelRouting:                    g.ModelRouting,
 		ModelRoutingEnabled:             g.ModelRoutingEnabled,
 		MCPXMLInject:                    g.McpXMLInject,
+		SimulateClaudeMaxEnabled:        g.SimulateClaudeMaxEnabled,
 		SupportedModelScopes:            g.SupportedModelScopes,
 		SortOrder:                       g.SortOrder,
 		AllowMessagesDispatch:           g.AllowMessagesDispatch,

backend/internal/repository/dashboard_aggregation_repo.go

@@ -17,9 +17,6 @@ type dashboardAggregationRepository struct {
 	sql sqlExecutor
 }
 
-const usageLogsCleanupBatchSize = 10000
-const usageBillingDedupCleanupBatchSize = 10000
-
 // NewDashboardAggregationRepository 创建仪表盘预聚合仓储。
 func NewDashboardAggregationRepository(sqlDB *sql.DB) service.DashboardAggregationRepository {
 	if sqlDB == nil {
@@ -45,9 +42,6 @@ func isPostgresDriver(db *sql.DB) bool {
 }
 
 func (r *dashboardAggregationRepository) AggregateRange(ctx context.Context, start, end time.Time) error {
-	if r == nil || r.sql == nil {
-		return nil
-	}
 	loc := timezone.Location()
 	startLocal := start.In(loc)
 	endLocal := end.In(loc)
@@ -67,22 +61,6 @@ func (r *dashboardAggregationRepository) AggregateRange(ctx context.Context, sta
 		dayEnd = dayEnd.Add(24 * time.Hour)
 	}
 
-	if db, ok := r.sql.(*sql.DB); ok {
-		tx, err := db.BeginTx(ctx, nil)
-		if err != nil {
-			return err
-		}
-		txRepo := newDashboardAggregationRepositoryWithSQL(tx)
-		if err := txRepo.aggregateRangeInTx(ctx, hourStart, hourEnd, dayStart, dayEnd); err != nil {
-			_ = tx.Rollback()
-			return err
-		}
-		return tx.Commit()
-	}
-	return r.aggregateRangeInTx(ctx, hourStart, hourEnd, dayStart, dayEnd)
-}
-
-func (r *dashboardAggregationRepository) aggregateRangeInTx(ctx context.Context, hourStart, hourEnd, dayStart, dayEnd time.Time) error {
 	// 以桶边界聚合，允许覆盖 end 所在桶的剩余区间。
 	if err := r.insertHourlyActiveUsers(ctx, hourStart, hourEnd); err != nil {
 		return err
@@ -217,58 +195,8 @@ func (r *dashboardAggregationRepository) CleanupUsageLogs(ctx context.Context, c
 	if isPartitioned {
 		return r.dropUsageLogsPartitions(ctx, cutoff)
 	}
-	for {
-		res, err := r.sql.ExecContext(ctx, `
-			WITH victims AS (
-				SELECT ctid
-				FROM usage_logs
-				WHERE created_at < $1
-				LIMIT $2
-			)
-			DELETE FROM usage_logs
-			WHERE ctid IN (SELECT ctid FROM victims)
-		`, cutoff.UTC(), usageLogsCleanupBatchSize)
-		if err != nil {
-			return err
-		}
-		affected, err := res.RowsAffected()
-		if err != nil {
-			return err
-		}
-		if affected < usageLogsCleanupBatchSize {
-			return nil
-		}
-	}
-}
-
-func (r *dashboardAggregationRepository) CleanupUsageBillingDedup(ctx context.Context, cutoff time.Time) error {
-	for {
-		res, err := r.sql.ExecContext(ctx, `
-			WITH victims AS (
-				SELECT ctid, request_id, api_key_id, request_fingerprint, created_at
-				FROM usage_billing_dedup
-				WHERE created_at < $1
-				LIMIT $2
-			), archived AS (
-				INSERT INTO usage_billing_dedup_archive (request_id, api_key_id, request_fingerprint, created_at)
-				SELECT request_id, api_key_id, request_fingerprint, created_at
-				FROM victims
-				ON CONFLICT (request_id, api_key_id) DO NOTHING
-			)
-			DELETE FROM usage_billing_dedup
-			WHERE ctid IN (SELECT ctid FROM victims)
-		`, cutoff.UTC(), usageBillingDedupCleanupBatchSize)
-		if err != nil {
-			return err
-		}
-		affected, err := res.RowsAffected()
-		if err != nil {
-			return err
-		}
-		if affected < usageBillingDedupCleanupBatchSize {
-			return nil
-		}
-	}
+	_, err = r.sql.ExecContext(ctx, "DELETE FROM usage_logs WHERE created_at < $1", cutoff.UTC())
+	return err
 }
 
 func (r *dashboardAggregationRepository) EnsureUsageLogsPartitions(ctx context.Context, now time.Time) error {

backend/internal/repository/fixtures_integration_test.go

@@ -262,42 +262,6 @@ func mustCreateApiKey(t *testing.T, client *dbent.Client, k *service.APIKey) *se
 		SetKey(k.Key).
 		SetName(k.Name).
 		SetStatus(k.Status)
-	if k.Quota != 0 {
-		create.SetQuota(k.Quota)
-	}
-	if k.QuotaUsed != 0 {
-		create.SetQuotaUsed(k.QuotaUsed)
-	}
-	if k.RateLimit5h != 0 {
-		create.SetRateLimit5h(k.RateLimit5h)
-	}
-	if k.RateLimit1d != 0 {
-		create.SetRateLimit1d(k.RateLimit1d)
-	}
-	if k.RateLimit7d != 0 {
-		create.SetRateLimit7d(k.RateLimit7d)
-	}
-	if k.Usage5h != 0 {
-		create.SetUsage5h(k.Usage5h)
-	}
-	if k.Usage1d != 0 {
-		create.SetUsage1d(k.Usage1d)
-	}
-	if k.Usage7d != 0 {
-		create.SetUsage7d(k.Usage7d)
-	}
-	if k.Window5hStart != nil {
-		create.SetWindow5hStart(*k.Window5hStart)
-	}
-	if k.Window1dStart != nil {
-		create.SetWindow1dStart(*k.Window1dStart)
-	}
-	if k.Window7dStart != nil {
-		create.SetWindow7dStart(*k.Window7dStart)
-	}
-	if k.ExpiresAt != nil {
-		create.SetExpiresAt(*k.ExpiresAt)
-	}
 	if k.GroupID != nil {
 		create.SetGroupID(*k.GroupID)
 	}

backend/internal/repository/group_repo.go

@@ -61,7 +61,8 @@ func (r *groupRepository) Create(ctx context.Context, groupIn *service.Group) er
 		SetMcpXMLInject(groupIn.MCPXMLInject).
 		SetSoraStorageQuotaBytes(groupIn.SoraStorageQuotaBytes).
 		SetAllowMessagesDispatch(groupIn.AllowMessagesDispatch).
-		SetDefaultMappedModel(groupIn.DefaultMappedModel)
+		SetDefaultMappedModel(groupIn.DefaultMappedModel).
+		SetSimulateClaudeMaxEnabled(groupIn.SimulateClaudeMaxEnabled)
 
 	// 设置模型路由配置
 	if groupIn.ModelRouting != nil {
@@ -129,7 +130,8 @@ func (r *groupRepository) Update(ctx context.Context, groupIn *service.Group) er
 		SetMcpXMLInject(groupIn.MCPXMLInject).
 		SetSoraStorageQuotaBytes(groupIn.SoraStorageQuotaBytes).
 		SetAllowMessagesDispatch(groupIn.AllowMessagesDispatch).
-		SetDefaultMappedModel(groupIn.DefaultMappedModel)
+		SetDefaultMappedModel(groupIn.DefaultMappedModel).
+		SetSimulateClaudeMaxEnabled(groupIn.SimulateClaudeMaxEnabled)
 
 	// 显式处理可空字段：nil 需要 clear，非 nil 需要 set。
 	if groupIn.DailyLimitUSD != nil {

backend/internal/repository/migrations_schema_integration_test.go

@@ -45,20 +45,6 @@ func TestMigrationsRunner_IsIdempotent_AndSchemaIsUpToDate(t *testing.T) {
 	requireColumn(t, tx, "usage_logs", "request_type", "smallint", 0, false)
 	requireColumn(t, tx, "usage_logs", "openai_ws_mode", "boolean", 0, false)
 
-	// usage_billing_dedup: billing idempotency narrow table
-	var usageBillingDedupRegclass sql.NullString
-	require.NoError(t, tx.QueryRowContext(context.Background(), "SELECT to_regclass('public.usage_billing_dedup')").Scan(&usageBillingDedupRegclass))
-	require.True(t, usageBillingDedupRegclass.Valid, "expected usage_billing_dedup table to exist")
-	requireColumn(t, tx, "usage_billing_dedup", "request_fingerprint", "character varying", 64, false)
-	requireIndex(t, tx, "usage_billing_dedup", "idx_usage_billing_dedup_request_api_key")
-	requireIndex(t, tx, "usage_billing_dedup", "idx_usage_billing_dedup_created_at_brin")
-
-	var usageBillingDedupArchiveRegclass sql.NullString
-	require.NoError(t, tx.QueryRowContext(context.Background(), "SELECT to_regclass('public.usage_billing_dedup_archive')").Scan(&usageBillingDedupArchiveRegclass))
-	require.True(t, usageBillingDedupArchiveRegclass.Valid, "expected usage_billing_dedup_archive table to exist")
-	requireColumn(t, tx, "usage_billing_dedup_archive", "request_fingerprint", "character varying", 64, false)
-	requireIndex(t, tx, "usage_billing_dedup_archive", "usage_billing_dedup_archive_pkey")
-
 	// settings table should exist
 	var settingsRegclass sql.NullString
 	require.NoError(t, tx.QueryRowContext(context.Background(), "SELECT to_regclass('public.settings')").Scan(&settingsRegclass))
@@ -89,23 +75,6 @@ func TestMigrationsRunner_IsIdempotent_AndSchemaIsUpToDate(t *testing.T) {
 	requireColumn(t, tx, "user_allowed_groups", "created_at", "timestamp with time zone", 0, false)
 }
 
-func requireIndex(t *testing.T, tx *sql.Tx, table, index string) {
-	t.Helper()
-
-	var exists bool
-	err := tx.QueryRowContext(context.Background(), `
-SELECT EXISTS (
-	SELECT 1
-	FROM pg_indexes
-	WHERE schemaname = 'public'
-	  AND tablename = $1
-	  AND indexname = $2
-)
-`, table, index).Scan(&exists)
-	require.NoError(t, err, "query pg_indexes for %s.%s", table, index)
-	require.True(t, exists, "expected index %s on %s", index, table)
-}
-
 func requireColumn(t *testing.T, tx *sql.Tx, table, column, dataType string, maxLen int, nullable bool) {
 	t.Helper()
 

backend/internal/repository/req_client_pool.go

@@ -73,14 +73,3 @@ func buildReqClientKey(opts reqClientOptions) string {
 		opts.ForceHTTP2,
 	)
 }
-
-// CreatePrivacyReqClient creates an HTTP client for OpenAI privacy settings API
-// This is exported for use by OpenAIPrivacyService
-// Uses Chrome TLS fingerprint impersonation to bypass Cloudflare checks
-func CreatePrivacyReqClient(proxyURL string) (*req.Client, error) {
-	return getSharedReqClient(reqClientOptions{
-		ProxyURL:    proxyURL,
-		Timeout:     30 * time.Second,
-		Impersonate: true, // Enable Chrome TLS fingerprint impersonation
-	})
-}

backend/internal/repository/usage_billing_repo.go

@@ -1,308 +0,0 @@
-package repository
-
-import (
-	"context"
-	"database/sql"
-	"errors"
-	"strings"
-
-	dbent "github.com/Wei-Shaw/sub2api/ent"
-	"github.com/Wei-Shaw/sub2api/internal/pkg/logger"
-	"github.com/Wei-Shaw/sub2api/internal/service"
-)
-
-type usageBillingRepository struct {
-	db *sql.DB
-}
-
-func NewUsageBillingRepository(_ *dbent.Client, sqlDB *sql.DB) service.UsageBillingRepository {
-	return &usageBillingRepository{db: sqlDB}
-}
-
-func (r *usageBillingRepository) Apply(ctx context.Context, cmd *service.UsageBillingCommand) (_ *service.UsageBillingApplyResult, err error) {
-	if cmd == nil {
-		return &service.UsageBillingApplyResult{}, nil
-	}
-	if r == nil || r.db == nil {
-		return nil, errors.New("usage billing repository db is nil")
-	}
-
-	cmd.Normalize()
-	if cmd.RequestID == "" {
-		return nil, service.ErrUsageBillingRequestIDRequired
-	}
-
-	tx, err := r.db.BeginTx(ctx, nil)
-	if err != nil {
-		return nil, err
-	}
-	defer func() {
-		if tx != nil {
-			_ = tx.Rollback()
-		}
-	}()
-
-	applied, err := r.claimUsageBillingKey(ctx, tx, cmd)
-	if err != nil {
-		return nil, err
-	}
-	if !applied {
-		return &service.UsageBillingApplyResult{Applied: false}, nil
-	}
-
-	result := &service.UsageBillingApplyResult{Applied: true}
-	if err := r.applyUsageBillingEffects(ctx, tx, cmd, result); err != nil {
-		return nil, err
-	}
-
-	if err := tx.Commit(); err != nil {
-		return nil, err
-	}
-	tx = nil
-	return result, nil
-}
-
-func (r *usageBillingRepository) claimUsageBillingKey(ctx context.Context, tx *sql.Tx, cmd *service.UsageBillingCommand) (bool, error) {
-	var id int64
-	err := tx.QueryRowContext(ctx, `
-		INSERT INTO usage_billing_dedup (request_id, api_key_id, request_fingerprint)
-		VALUES ($1, $2, $3)
-		ON CONFLICT (request_id, api_key_id) DO NOTHING
-		RETURNING id
-	`, cmd.RequestID, cmd.APIKeyID, cmd.RequestFingerprint).Scan(&id)
-	if errors.Is(err, sql.ErrNoRows) {
-		var existingFingerprint string
-		if err := tx.QueryRowContext(ctx, `
-			SELECT request_fingerprint
-			FROM usage_billing_dedup
-			WHERE request_id = $1 AND api_key_id = $2
-		`, cmd.RequestID, cmd.APIKeyID).Scan(&existingFingerprint); err != nil {
-			return false, err
-		}
-		if strings.TrimSpace(existingFingerprint) != strings.TrimSpace(cmd.RequestFingerprint) {
-			return false, service.ErrUsageBillingRequestConflict
-		}
-		return false, nil
-	}
-	if err != nil {
-		return false, err
-	}
-	var archivedFingerprint string
-	err = tx.QueryRowContext(ctx, `
-		SELECT request_fingerprint
-		FROM usage_billing_dedup_archive
-		WHERE request_id = $1 AND api_key_id = $2
-	`, cmd.RequestID, cmd.APIKeyID).Scan(&archivedFingerprint)
-	if err == nil {
-		if strings.TrimSpace(archivedFingerprint) != strings.TrimSpace(cmd.RequestFingerprint) {
-			return false, service.ErrUsageBillingRequestConflict
-		}
-		return false, nil
-	}
-	if !errors.Is(err, sql.ErrNoRows) {
-		return false, err
-	}
-	return true, nil
-}
-
-func (r *usageBillingRepository) applyUsageBillingEffects(ctx context.Context, tx *sql.Tx, cmd *service.UsageBillingCommand, result *service.UsageBillingApplyResult) error {
-	if cmd.SubscriptionCost > 0 && cmd.SubscriptionID != nil {
-		if err := incrementUsageBillingSubscription(ctx, tx, *cmd.SubscriptionID, cmd.SubscriptionCost); err != nil {
-			return err
-		}
-	}
-
-	if cmd.BalanceCost > 0 {
-		if err := deductUsageBillingBalance(ctx, tx, cmd.UserID, cmd.BalanceCost); err != nil {
-			return err
-		}
-	}
-
-	if cmd.APIKeyQuotaCost > 0 {
-		exhausted, err := incrementUsageBillingAPIKeyQuota(ctx, tx, cmd.APIKeyID, cmd.APIKeyQuotaCost)
-		if err != nil {
-			return err
-		}
-		result.APIKeyQuotaExhausted = exhausted
-	}
-
-	if cmd.APIKeyRateLimitCost > 0 {
-		if err := incrementUsageBillingAPIKeyRateLimit(ctx, tx, cmd.APIKeyID, cmd.APIKeyRateLimitCost); err != nil {
-			return err
-		}
-	}
-
-	if cmd.AccountQuotaCost > 0 && strings.EqualFold(cmd.AccountType, service.AccountTypeAPIKey) {
-		if err := incrementUsageBillingAccountQuota(ctx, tx, cmd.AccountID, cmd.AccountQuotaCost); err != nil {
-			return err
-		}
-	}
-
-	return nil
-}
-
-func incrementUsageBillingSubscription(ctx context.Context, tx *sql.Tx, subscriptionID int64, costUSD float64) error {
-	const updateSQL = `
-		UPDATE user_subscriptions us
-		SET
-			daily_usage_usd = us.daily_usage_usd + $1,
-			weekly_usage_usd = us.weekly_usage_usd + $1,
-			monthly_usage_usd = us.monthly_usage_usd + $1,
-			updated_at = NOW()
-		FROM groups g
-		WHERE us.id = $2
-			AND us.deleted_at IS NULL
-			AND us.group_id = g.id
-			AND g.deleted_at IS NULL
-	`
-	res, err := tx.ExecContext(ctx, updateSQL, costUSD, subscriptionID)
-	if err != nil {
-		return err
-	}
-	affected, err := res.RowsAffected()
-	if err != nil {
-		return err
-	}
-	if affected > 0 {
-		return nil
-	}
-	return service.ErrSubscriptionNotFound
-}
-
-func deductUsageBillingBalance(ctx context.Context, tx *sql.Tx, userID int64, amount float64) error {
-	res, err := tx.ExecContext(ctx, `
-		UPDATE users
-		SET balance = balance - $1,
-			updated_at = NOW()
-		WHERE id = $2 AND deleted_at IS NULL
-	`, amount, userID)
-	if err != nil {
-		return err
-	}
-	affected, err := res.RowsAffected()
-	if err != nil {
-		return err
-	}
-	if affected > 0 {
-		return nil
-	}
-	return service.ErrUserNotFound
-}
-
-func incrementUsageBillingAPIKeyQuota(ctx context.Context, tx *sql.Tx, apiKeyID int64, amount float64) (bool, error) {
-	var exhausted bool
-	err := tx.QueryRowContext(ctx, `
-		UPDATE api_keys
-		SET quota_used = quota_used + $1,
-			status = CASE
-				WHEN quota > 0
-					AND status = $3
-					AND quota_used < quota
-					AND quota_used + $1 >= quota
-				THEN $4
-				ELSE status
-			END,
-			updated_at = NOW()
-		WHERE id = $2 AND deleted_at IS NULL
-		RETURNING quota > 0 AND quota_used >= quota AND quota_used - $1 < quota
-	`, amount, apiKeyID, service.StatusAPIKeyActive, service.StatusAPIKeyQuotaExhausted).Scan(&exhausted)
-	if errors.Is(err, sql.ErrNoRows) {
-		return false, service.ErrAPIKeyNotFound
-	}
-	if err != nil {
-		return false, err
-	}
-	return exhausted, nil
-}
-
-func incrementUsageBillingAPIKeyRateLimit(ctx context.Context, tx *sql.Tx, apiKeyID int64, cost float64) error {
-	res, err := tx.ExecContext(ctx, `
-		UPDATE api_keys SET
-			usage_5h = CASE WHEN window_5h_start IS NOT NULL AND window_5h_start + INTERVAL '5 hours' <= NOW() THEN $1 ELSE usage_5h + $1 END,
-			usage_1d = CASE WHEN window_1d_start IS NOT NULL AND window_1d_start + INTERVAL '24 hours' <= NOW() THEN $1 ELSE usage_1d + $1 END,
-			usage_7d = CASE WHEN window_7d_start IS NOT NULL AND window_7d_start + INTERVAL '7 days' <= NOW() THEN $1 ELSE usage_7d + $1 END,
-			window_5h_start = CASE WHEN window_5h_start IS NULL OR window_5h_start + INTERVAL '5 hours' <= NOW() THEN NOW() ELSE window_5h_start END,
-			window_1d_start = CASE WHEN window_1d_start IS NULL OR window_1d_start + INTERVAL '24 hours' <= NOW() THEN date_trunc('day', NOW()) ELSE window_1d_start END,
-			window_7d_start = CASE WHEN window_7d_start IS NULL OR window_7d_start + INTERVAL '7 days' <= NOW() THEN date_trunc('day', NOW()) ELSE window_7d_start END,
-			updated_at = NOW()
-		WHERE id = $2 AND deleted_at IS NULL
-	`, cost, apiKeyID)
-	if err != nil {
-		return err
-	}
-	affected, err := res.RowsAffected()
-	if err != nil {
-		return err
-	}
-	if affected == 0 {
-		return service.ErrAPIKeyNotFound
-	}
-	return nil
-}
-
-func incrementUsageBillingAccountQuota(ctx context.Context, tx *sql.Tx, accountID int64, amount float64) error {
-	rows, err := tx.QueryContext(ctx,
-		`UPDATE accounts SET extra = (
-			COALESCE(extra, '{}'::jsonb)
-			|| jsonb_build_object('quota_used', COALESCE((extra->>'quota_used')::numeric, 0) + $1)
-			|| CASE WHEN COALESCE((extra->>'quota_daily_limit')::numeric, 0) > 0 THEN
-				jsonb_build_object(
-					'quota_daily_used',
-					CASE WHEN COALESCE((extra->>'quota_daily_start')::timestamptz, '1970-01-01'::timestamptz)
-						+ '24 hours'::interval <= NOW()
-					THEN $1
-					ELSE COALESCE((extra->>'quota_daily_used')::numeric, 0) + $1 END,
-					'quota_daily_start',
-					CASE WHEN COALESCE((extra->>'quota_daily_start')::timestamptz, '1970-01-01'::timestamptz)
-						+ '24 hours'::interval <= NOW()
-					THEN `+nowUTC+`
-					ELSE COALESCE(extra->>'quota_daily_start', `+nowUTC+`) END
-				)
-			ELSE '{}'::jsonb END
-			|| CASE WHEN COALESCE((extra->>'quota_weekly_limit')::numeric, 0) > 0 THEN
-				jsonb_build_object(
-					'quota_weekly_used',
-					CASE WHEN COALESCE((extra->>'quota_weekly_start')::timestamptz, '1970-01-01'::timestamptz)
-						+ '168 hours'::interval <= NOW()
-					THEN $1
-					ELSE COALESCE((extra->>'quota_weekly_used')::numeric, 0) + $1 END,
-					'quota_weekly_start',
-					CASE WHEN COALESCE((extra->>'quota_weekly_start')::timestamptz, '1970-01-01'::timestamptz)
-						+ '168 hours'::interval <= NOW()
-					THEN `+nowUTC+`
-					ELSE COALESCE(extra->>'quota_weekly_start', `+nowUTC+`) END
-				)
-			ELSE '{}'::jsonb END
-		), updated_at = NOW()
-		WHERE id = $2 AND deleted_at IS NULL
-		RETURNING
-			COALESCE((extra->>'quota_used')::numeric, 0),
-			COALESCE((extra->>'quota_limit')::numeric, 0)`,
-		amount, accountID)
-	if err != nil {
-		return err
-	}
-	defer func() { _ = rows.Close() }()
-
-	var newUsed, limit float64
-	if rows.Next() {
-		if err := rows.Scan(&newUsed, &limit); err != nil {
-			return err
-		}
-	} else {
-		if err := rows.Err(); err != nil {
-			return err
-		}
-		return service.ErrAccountNotFound
-	}
-	if err := rows.Err(); err != nil {
-		return err
-	}
-	if limit > 0 && newUsed >= limit && (newUsed-amount) < limit {
-		if err := enqueueSchedulerOutbox(ctx, tx, service.SchedulerOutboxEventAccountChanged, &accountID, nil, nil); err != nil {
-			logger.LegacyPrintf("repository.usage_billing", "[SchedulerOutbox] enqueue quota exceeded failed: account=%d err=%v", accountID, err)
-			return err
-		}
-	}
-	return nil
-}

backend/internal/repository/usage_billing_repo_integration_test.go

@@ -1,279 +0,0 @@
-//go:build integration
-
-package repository
-
-import (
-	"context"
-	"fmt"
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/google/uuid"
-	"github.com/stretchr/testify/require"
-
-	"github.com/Wei-Shaw/sub2api/internal/service"
-)
-
-func TestUsageBillingRepositoryApply_DeduplicatesBalanceBilling(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := NewUsageBillingRepository(client, integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{
-		Email:        fmt.Sprintf("usage-billing-user-%d@example.com", time.Now().UnixNano()),
-		PasswordHash: "hash",
-		Balance:      100,
-	})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{
-		UserID: user.ID,
-		Key:    "sk-usage-billing-" + uuid.NewString(),
-		Name:   "billing",
-		Quota:  1,
-	})
-	account := mustCreateAccount(t, client, &service.Account{
-		Name: "usage-billing-account-" + uuid.NewString(),
-		Type: service.AccountTypeAPIKey,
-	})
-
-	requestID := uuid.NewString()
-	cmd := &service.UsageBillingCommand{
-		RequestID:           requestID,
-		APIKeyID:            apiKey.ID,
-		UserID:              user.ID,
-		AccountID:           account.ID,
-		AccountType:         service.AccountTypeAPIKey,
-		BalanceCost:         1.25,
-		APIKeyQuotaCost:     1.25,
-		APIKeyRateLimitCost: 1.25,
-	}
-
-	result1, err := repo.Apply(ctx, cmd)
-	require.NoError(t, err)
-	require.NotNil(t, result1)
-	require.True(t, result1.Applied)
-	require.True(t, result1.APIKeyQuotaExhausted)
-
-	result2, err := repo.Apply(ctx, cmd)
-	require.NoError(t, err)
-	require.NotNil(t, result2)
-	require.False(t, result2.Applied)
-
-	var balance float64
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT balance FROM users WHERE id = $1", user.ID).Scan(&balance))
-	require.InDelta(t, 98.75, balance, 0.000001)
-
-	var quotaUsed float64
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT quota_used FROM api_keys WHERE id = $1", apiKey.ID).Scan(&quotaUsed))
-	require.InDelta(t, 1.25, quotaUsed, 0.000001)
-
-	var usage5h float64
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT usage_5h FROM api_keys WHERE id = $1", apiKey.ID).Scan(&usage5h))
-	require.InDelta(t, 1.25, usage5h, 0.000001)
-
-	var status string
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT status FROM api_keys WHERE id = $1", apiKey.ID).Scan(&status))
-	require.Equal(t, service.StatusAPIKeyQuotaExhausted, status)
-
-	var dedupCount int
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT COUNT(*) FROM usage_billing_dedup WHERE request_id = $1 AND api_key_id = $2", requestID, apiKey.ID).Scan(&dedupCount))
-	require.Equal(t, 1, dedupCount)
-}
-
-func TestUsageBillingRepositoryApply_DeduplicatesSubscriptionBilling(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := NewUsageBillingRepository(client, integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{
-		Email:        fmt.Sprintf("usage-billing-sub-user-%d@example.com", time.Now().UnixNano()),
-		PasswordHash: "hash",
-	})
-	group := mustCreateGroup(t, client, &service.Group{
-		Name:             "usage-billing-group-" + uuid.NewString(),
-		Platform:         service.PlatformAnthropic,
-		SubscriptionType: service.SubscriptionTypeSubscription,
-	})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{
-		UserID:  user.ID,
-		GroupID: &group.ID,
-		Key:     "sk-usage-billing-sub-" + uuid.NewString(),
-		Name:    "billing-sub",
-	})
-	subscription := mustCreateSubscription(t, client, &service.UserSubscription{
-		UserID:  user.ID,
-		GroupID: group.ID,
-	})
-
-	requestID := uuid.NewString()
-	cmd := &service.UsageBillingCommand{
-		RequestID:        requestID,
-		APIKeyID:         apiKey.ID,
-		UserID:           user.ID,
-		AccountID:        0,
-		SubscriptionID:   &subscription.ID,
-		SubscriptionCost: 2.5,
-	}
-
-	result1, err := repo.Apply(ctx, cmd)
-	require.NoError(t, err)
-	require.True(t, result1.Applied)
-
-	result2, err := repo.Apply(ctx, cmd)
-	require.NoError(t, err)
-	require.False(t, result2.Applied)
-
-	var dailyUsage float64
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT daily_usage_usd FROM user_subscriptions WHERE id = $1", subscription.ID).Scan(&dailyUsage))
-	require.InDelta(t, 2.5, dailyUsage, 0.000001)
-}
-
-func TestUsageBillingRepositoryApply_RequestFingerprintConflict(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := NewUsageBillingRepository(client, integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{
-		Email:        fmt.Sprintf("usage-billing-conflict-user-%d@example.com", time.Now().UnixNano()),
-		PasswordHash: "hash",
-		Balance:      100,
-	})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{
-		UserID: user.ID,
-		Key:    "sk-usage-billing-conflict-" + uuid.NewString(),
-		Name:   "billing-conflict",
-	})
-
-	requestID := uuid.NewString()
-	_, err := repo.Apply(ctx, &service.UsageBillingCommand{
-		RequestID:   requestID,
-		APIKeyID:    apiKey.ID,
-		UserID:      user.ID,
-		BalanceCost: 1.25,
-	})
-	require.NoError(t, err)
-
-	_, err = repo.Apply(ctx, &service.UsageBillingCommand{
-		RequestID:   requestID,
-		APIKeyID:    apiKey.ID,
-		UserID:      user.ID,
-		BalanceCost: 2.50,
-	})
-	require.ErrorIs(t, err, service.ErrUsageBillingRequestConflict)
-}
-
-func TestUsageBillingRepositoryApply_UpdatesAccountQuota(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := NewUsageBillingRepository(client, integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{
-		Email:        fmt.Sprintf("usage-billing-account-user-%d@example.com", time.Now().UnixNano()),
-		PasswordHash: "hash",
-	})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{
-		UserID: user.ID,
-		Key:    "sk-usage-billing-account-" + uuid.NewString(),
-		Name:   "billing-account",
-	})
-	account := mustCreateAccount(t, client, &service.Account{
-		Name: "usage-billing-account-quota-" + uuid.NewString(),
-		Type: service.AccountTypeAPIKey,
-		Extra: map[string]any{
-			"quota_limit": 100.0,
-		},
-	})
-
-	_, err := repo.Apply(ctx, &service.UsageBillingCommand{
-		RequestID:        uuid.NewString(),
-		APIKeyID:         apiKey.ID,
-		UserID:           user.ID,
-		AccountID:        account.ID,
-		AccountType:      service.AccountTypeAPIKey,
-		AccountQuotaCost: 3.5,
-	})
-	require.NoError(t, err)
-
-	var quotaUsed float64
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT COALESCE((extra->>'quota_used')::numeric, 0) FROM accounts WHERE id = $1", account.ID).Scan(&quotaUsed))
-	require.InDelta(t, 3.5, quotaUsed, 0.000001)
-}
-
-func TestDashboardAggregationRepositoryCleanupUsageBillingDedup_BatchDeletesOldRows(t *testing.T) {
-	ctx := context.Background()
-	repo := newDashboardAggregationRepositoryWithSQL(integrationDB)
-
-	oldRequestID := "dedup-old-" + uuid.NewString()
-	newRequestID := "dedup-new-" + uuid.NewString()
-	oldCreatedAt := time.Now().UTC().AddDate(0, 0, -400)
-	newCreatedAt := time.Now().UTC().Add(-time.Hour)
-
-	_, err := integrationDB.ExecContext(ctx, `
-		INSERT INTO usage_billing_dedup (request_id, api_key_id, request_fingerprint, created_at)
-		VALUES ($1, 1, $2, $3), ($4, 1, $5, $6)
-	`,
-		oldRequestID, strings.Repeat("a", 64), oldCreatedAt,
-		newRequestID, strings.Repeat("b", 64), newCreatedAt,
-	)
-	require.NoError(t, err)
-
-	require.NoError(t, repo.CleanupUsageBillingDedup(ctx, time.Now().UTC().AddDate(0, 0, -365)))
-
-	var oldCount int
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT COUNT(*) FROM usage_billing_dedup WHERE request_id = $1", oldRequestID).Scan(&oldCount))
-	require.Equal(t, 0, oldCount)
-
-	var newCount int
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT COUNT(*) FROM usage_billing_dedup WHERE request_id = $1", newRequestID).Scan(&newCount))
-	require.Equal(t, 1, newCount)
-
-	var archivedCount int
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT COUNT(*) FROM usage_billing_dedup_archive WHERE request_id = $1", oldRequestID).Scan(&archivedCount))
-	require.Equal(t, 1, archivedCount)
-}
-
-func TestUsageBillingRepositoryApply_DeduplicatesAgainstArchivedKey(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := NewUsageBillingRepository(client, integrationDB)
-	aggRepo := newDashboardAggregationRepositoryWithSQL(integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{
-		Email:        fmt.Sprintf("usage-billing-archive-user-%d@example.com", time.Now().UnixNano()),
-		PasswordHash: "hash",
-		Balance:      100,
-	})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{
-		UserID: user.ID,
-		Key:    "sk-usage-billing-archive-" + uuid.NewString(),
-		Name:   "billing-archive",
-	})
-
-	requestID := uuid.NewString()
-	cmd := &service.UsageBillingCommand{
-		RequestID:   requestID,
-		APIKeyID:    apiKey.ID,
-		UserID:      user.ID,
-		BalanceCost: 1.25,
-	}
-
-	result1, err := repo.Apply(ctx, cmd)
-	require.NoError(t, err)
-	require.True(t, result1.Applied)
-
-	_, err = integrationDB.ExecContext(ctx, `
-		UPDATE usage_billing_dedup
-		SET created_at = $1
-		WHERE request_id = $2 AND api_key_id = $3
-	`, time.Now().UTC().AddDate(0, 0, -400), requestID, apiKey.ID)
-	require.NoError(t, err)
-	require.NoError(t, aggRepo.CleanupUsageBillingDedup(ctx, time.Now().UTC().AddDate(0, 0, -365)))
-
-	result2, err := repo.Apply(ctx, cmd)
-	require.NoError(t, err)
-	require.False(t, result2.Applied)
-
-	var balance float64
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT balance FROM users WHERE id = $1", user.ID).Scan(&balance))
-	require.InDelta(t, 98.75, balance, 0.000001)
-}

backend/internal/repository/usage_log_repo_integration_test.go

@@ -4,8 +4,6 @@ package repository
 
 import (
 	"context"
-	"fmt"
-	"sync"
 	"testing"
 	"time"
 
@@ -16,7 +14,6 @@ import (
 	"github.com/Wei-Shaw/sub2api/internal/pkg/timezone"
 	"github.com/Wei-Shaw/sub2api/internal/pkg/usagestats"
 	"github.com/Wei-Shaw/sub2api/internal/service"
-	"github.com/stretchr/testify/require"
 	"github.com/stretchr/testify/suite"
 )
 
@@ -87,367 +84,6 @@ func (s *UsageLogRepoSuite) TestCreate() {
 	s.Require().NotZero(log.ID)
 }
 
-func TestUsageLogRepositoryCreate_BatchPathConcurrent(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := newUsageLogRepositoryWithSQL(client, integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{Email: fmt.Sprintf("usage-batch-%d@example.com", time.Now().UnixNano())})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{UserID: user.ID, Key: "sk-usage-batch-" + uuid.NewString(), Name: "k"})
-	account := mustCreateAccount(t, client, &service.Account{Name: "acc-usage-batch-" + uuid.NewString()})
-
-	const total = 16
-	results := make([]bool, total)
-	errs := make([]error, total)
-	logs := make([]*service.UsageLog, total)
-
-	var wg sync.WaitGroup
-	wg.Add(total)
-	for i := 0; i < total; i++ {
-		i := i
-		logs[i] = &service.UsageLog{
-			UserID:       user.ID,
-			APIKeyID:     apiKey.ID,
-			AccountID:    account.ID,
-			RequestID:    uuid.NewString(),
-			Model:        "claude-3",
-			InputTokens:  10 + i,
-			OutputTokens: 20 + i,
-			TotalCost:    0.5,
-			ActualCost:   0.5,
-			CreatedAt:    time.Now().UTC(),
-		}
-		go func() {
-			defer wg.Done()
-			results[i], errs[i] = repo.Create(ctx, logs[i])
-		}()
-	}
-	wg.Wait()
-
-	for i := 0; i < total; i++ {
-		require.NoError(t, errs[i])
-		require.True(t, results[i])
-		require.NotZero(t, logs[i].ID)
-	}
-
-	var count int
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT COUNT(*) FROM usage_logs WHERE api_key_id = $1", apiKey.ID).Scan(&count))
-	require.Equal(t, total, count)
-}
-
-func TestUsageLogRepositoryCreate_BatchPathDuplicateRequestID(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := newUsageLogRepositoryWithSQL(client, integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{Email: fmt.Sprintf("usage-dup-%d@example.com", time.Now().UnixNano())})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{UserID: user.ID, Key: "sk-usage-dup-" + uuid.NewString(), Name: "k"})
-	account := mustCreateAccount(t, client, &service.Account{Name: "acc-usage-dup-" + uuid.NewString()})
-	requestID := uuid.NewString()
-
-	log1 := &service.UsageLog{
-		UserID:       user.ID,
-		APIKeyID:     apiKey.ID,
-		AccountID:    account.ID,
-		RequestID:    requestID,
-		Model:        "claude-3",
-		InputTokens:  10,
-		OutputTokens: 20,
-		TotalCost:    0.5,
-		ActualCost:   0.5,
-		CreatedAt:    time.Now().UTC(),
-	}
-	log2 := &service.UsageLog{
-		UserID:       user.ID,
-		APIKeyID:     apiKey.ID,
-		AccountID:    account.ID,
-		RequestID:    requestID,
-		Model:        "claude-3",
-		InputTokens:  10,
-		OutputTokens: 20,
-		TotalCost:    0.5,
-		ActualCost:   0.5,
-		CreatedAt:    time.Now().UTC(),
-	}
-
-	inserted1, err1 := repo.Create(ctx, log1)
-	inserted2, err2 := repo.Create(ctx, log2)
-	require.NoError(t, err1)
-	require.NoError(t, err2)
-	require.True(t, inserted1)
-	require.False(t, inserted2)
-	require.Equal(t, log1.ID, log2.ID)
-
-	var count int
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT COUNT(*) FROM usage_logs WHERE request_id = $1 AND api_key_id = $2", requestID, apiKey.ID).Scan(&count))
-	require.Equal(t, 1, count)
-}
-
-func TestUsageLogRepositoryFlushCreateBatch_DeduplicatesSameKeyInMemory(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := newUsageLogRepositoryWithSQL(client, integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{Email: fmt.Sprintf("usage-batch-memdup-%d@example.com", time.Now().UnixNano())})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{UserID: user.ID, Key: "sk-usage-batch-memdup-" + uuid.NewString(), Name: "k"})
-	account := mustCreateAccount(t, client, &service.Account{Name: "acc-usage-batch-memdup-" + uuid.NewString()})
-	requestID := uuid.NewString()
-
-	const total = 8
-	batch := make([]usageLogCreateRequest, 0, total)
-	logs := make([]*service.UsageLog, 0, total)
-
-	for i := 0; i < total; i++ {
-		log := &service.UsageLog{
-			UserID:       user.ID,
-			APIKeyID:     apiKey.ID,
-			AccountID:    account.ID,
-			RequestID:    requestID,
-			Model:        "claude-3",
-			InputTokens:  10 + i,
-			OutputTokens: 20 + i,
-			TotalCost:    0.5,
-			ActualCost:   0.5,
-			CreatedAt:    time.Now().UTC(),
-		}
-		logs = append(logs, log)
-		batch = append(batch, usageLogCreateRequest{
-			log:      log,
-			prepared: prepareUsageLogInsert(log),
-			resultCh: make(chan usageLogCreateResult, 1),
-		})
-	}
-
-	repo.flushCreateBatch(integrationDB, batch)
-
-	insertedCount := 0
-	var firstID int64
-	for idx, req := range batch {
-		res := <-req.resultCh
-		require.NoError(t, res.err)
-		if res.inserted {
-			insertedCount++
-		}
-		require.NotZero(t, logs[idx].ID)
-		if idx == 0 {
-			firstID = logs[idx].ID
-		} else {
-			require.Equal(t, firstID, logs[idx].ID)
-		}
-	}
-
-	require.Equal(t, 1, insertedCount)
-
-	var count int
-	require.NoError(t, integrationDB.QueryRowContext(ctx, "SELECT COUNT(*) FROM usage_logs WHERE request_id = $1 AND api_key_id = $2", requestID, apiKey.ID).Scan(&count))
-	require.Equal(t, 1, count)
-}
-
-func TestUsageLogRepositoryCreateBestEffort_BatchPathDuplicateRequestID(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := newUsageLogRepositoryWithSQL(client, integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{Email: fmt.Sprintf("usage-best-effort-dup-%d@example.com", time.Now().UnixNano())})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{UserID: user.ID, Key: "sk-usage-best-effort-dup-" + uuid.NewString(), Name: "k"})
-	account := mustCreateAccount(t, client, &service.Account{Name: "acc-usage-best-effort-dup-" + uuid.NewString()})
-	requestID := uuid.NewString()
-
-	log1 := &service.UsageLog{
-		UserID:       user.ID,
-		APIKeyID:     apiKey.ID,
-		AccountID:    account.ID,
-		RequestID:    requestID,
-		Model:        "claude-3",
-		InputTokens:  10,
-		OutputTokens: 20,
-		TotalCost:    0.5,
-		ActualCost:   0.5,
-		CreatedAt:    time.Now().UTC(),
-	}
-	log2 := &service.UsageLog{
-		UserID:       user.ID,
-		APIKeyID:     apiKey.ID,
-		AccountID:    account.ID,
-		RequestID:    requestID,
-		Model:        "claude-3",
-		InputTokens:  10,
-		OutputTokens: 20,
-		TotalCost:    0.5,
-		ActualCost:   0.5,
-		CreatedAt:    time.Now().UTC(),
-	}
-
-	require.NoError(t, repo.CreateBestEffort(ctx, log1))
-	require.NoError(t, repo.CreateBestEffort(ctx, log2))
-
-	require.Eventually(t, func() bool {
-		var count int
-		err := integrationDB.QueryRowContext(ctx, "SELECT COUNT(*) FROM usage_logs WHERE request_id = $1 AND api_key_id = $2", requestID, apiKey.ID).Scan(&count)
-		return err == nil && count == 1
-	}, 3*time.Second, 20*time.Millisecond)
-}
-
-func TestUsageLogRepositoryCreateBestEffort_QueueFullReturnsDropped(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := newUsageLogRepositoryWithSQL(client, integrationDB)
-	repo.bestEffortBatchCh = make(chan usageLogBestEffortRequest, 1)
-	repo.bestEffortBatchCh <- usageLogBestEffortRequest{}
-
-	user := mustCreateUser(t, client, &service.User{Email: fmt.Sprintf("usage-best-effort-full-%d@example.com", time.Now().UnixNano())})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{UserID: user.ID, Key: "sk-usage-best-effort-full-" + uuid.NewString(), Name: "k"})
-	account := mustCreateAccount(t, client, &service.Account{Name: "acc-usage-best-effort-full-" + uuid.NewString()})
-
-	err := repo.CreateBestEffort(ctx, &service.UsageLog{
-		UserID:       user.ID,
-		APIKeyID:     apiKey.ID,
-		AccountID:    account.ID,
-		RequestID:    uuid.NewString(),
-		Model:        "claude-3",
-		InputTokens:  10,
-		OutputTokens: 20,
-		TotalCost:    0.5,
-		ActualCost:   0.5,
-		CreatedAt:    time.Now().UTC(),
-	})
-
-	require.Error(t, err)
-	require.True(t, service.IsUsageLogCreateDropped(err))
-}
-
-func TestUsageLogRepositoryCreate_BatchPathCanceledContextMarksNotPersisted(t *testing.T) {
-	client := testEntClient(t)
-	repo := newUsageLogRepositoryWithSQL(client, integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{Email: fmt.Sprintf("usage-cancel-%d@example.com", time.Now().UnixNano())})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{UserID: user.ID, Key: "sk-usage-cancel-" + uuid.NewString(), Name: "k"})
-	account := mustCreateAccount(t, client, &service.Account{Name: "acc-usage-cancel-" + uuid.NewString()})
-
-	ctx, cancel := context.WithCancel(context.Background())
-	cancel()
-
-	inserted, err := repo.Create(ctx, &service.UsageLog{
-		UserID:       user.ID,
-		APIKeyID:     apiKey.ID,
-		AccountID:    account.ID,
-		RequestID:    uuid.NewString(),
-		Model:        "claude-3",
-		InputTokens:  10,
-		OutputTokens: 20,
-		TotalCost:    0.5,
-		ActualCost:   0.5,
-		CreatedAt:    time.Now().UTC(),
-	})
-
-	require.False(t, inserted)
-	require.Error(t, err)
-	require.True(t, service.IsUsageLogCreateNotPersisted(err))
-}
-
-func TestUsageLogRepositoryCreate_BatchPathQueueFullMarksNotPersisted(t *testing.T) {
-	ctx := context.Background()
-	client := testEntClient(t)
-	repo := newUsageLogRepositoryWithSQL(client, integrationDB)
-	repo.createBatchCh = make(chan usageLogCreateRequest, 1)
-	repo.createBatchCh <- usageLogCreateRequest{}
-
-	user := mustCreateUser(t, client, &service.User{Email: fmt.Sprintf("usage-create-full-%d@example.com", time.Now().UnixNano())})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{UserID: user.ID, Key: "sk-usage-create-full-" + uuid.NewString(), Name: "k"})
-	account := mustCreateAccount(t, client, &service.Account{Name: "acc-usage-create-full-" + uuid.NewString()})
-
-	inserted, err := repo.Create(ctx, &service.UsageLog{
-		UserID:       user.ID,
-		APIKeyID:     apiKey.ID,
-		AccountID:    account.ID,
-		RequestID:    uuid.NewString(),
-		Model:        "claude-3",
-		InputTokens:  10,
-		OutputTokens: 20,
-		TotalCost:    0.5,
-		ActualCost:   0.5,
-		CreatedAt:    time.Now().UTC(),
-	})
-
-	require.False(t, inserted)
-	require.Error(t, err)
-	require.True(t, service.IsUsageLogCreateNotPersisted(err))
-}
-
-func TestUsageLogRepositoryCreate_BatchPathCanceledAfterQueueMarksNotPersisted(t *testing.T) {
-	client := testEntClient(t)
-	repo := newUsageLogRepositoryWithSQL(client, integrationDB)
-	repo.createBatchCh = make(chan usageLogCreateRequest, 1)
-
-	user := mustCreateUser(t, client, &service.User{Email: fmt.Sprintf("usage-cancel-queued-%d@example.com", time.Now().UnixNano())})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{UserID: user.ID, Key: "sk-usage-cancel-queued-" + uuid.NewString(), Name: "k"})
-	account := mustCreateAccount(t, client, &service.Account{Name: "acc-usage-cancel-queued-" + uuid.NewString()})
-
-	ctx, cancel := context.WithCancel(context.Background())
-	errCh := make(chan error, 1)
-
-	go func() {
-		_, err := repo.createBatched(ctx, &service.UsageLog{
-			UserID:       user.ID,
-			APIKeyID:     apiKey.ID,
-			AccountID:    account.ID,
-			RequestID:    uuid.NewString(),
-			Model:        "claude-3",
-			InputTokens:  10,
-			OutputTokens: 20,
-			TotalCost:    0.5,
-			ActualCost:   0.5,
-			CreatedAt:    time.Now().UTC(),
-		})
-		errCh <- err
-	}()
-
-	req := <-repo.createBatchCh
-	require.NotNil(t, req.shared)
-	cancel()
-
-	err := <-errCh
-	require.Error(t, err)
-	require.True(t, service.IsUsageLogCreateNotPersisted(err))
-	completeUsageLogCreateRequest(req, usageLogCreateResult{inserted: false, err: service.MarkUsageLogCreateNotPersisted(context.Canceled)})
-}
-
-func TestUsageLogRepositoryFlushCreateBatch_CanceledRequestReturnsNotPersisted(t *testing.T) {
-	client := testEntClient(t)
-	repo := newUsageLogRepositoryWithSQL(client, integrationDB)
-
-	user := mustCreateUser(t, client, &service.User{Email: fmt.Sprintf("usage-flush-cancel-%d@example.com", time.Now().UnixNano())})
-	apiKey := mustCreateApiKey(t, client, &service.APIKey{UserID: user.ID, Key: "sk-usage-flush-cancel-" + uuid.NewString(), Name: "k"})
-	account := mustCreateAccount(t, client, &service.Account{Name: "acc-usage-flush-cancel-" + uuid.NewString()})
-
-	log := &service.UsageLog{
-		UserID:       user.ID,
-		APIKeyID:     apiKey.ID,
-		AccountID:    account.ID,
-		RequestID:    uuid.NewString(),
-		Model:        "claude-3",
-		InputTokens:  10,
-		OutputTokens: 20,
-		TotalCost:    0.5,
-		ActualCost:   0.5,
-		CreatedAt:    time.Now().UTC(),
-	}
-	req := usageLogCreateRequest{
-		log:      log,
-		prepared: prepareUsageLogInsert(log),
-		shared:   &usageLogCreateShared{},
-		resultCh: make(chan usageLogCreateResult, 1),
-	}
-	req.shared.state.Store(usageLogCreateStateCanceled)
-
-	repo.flushCreateBatch(integrationDB, []usageLogCreateRequest{req})
-
-	res := <-req.resultCh
-	require.False(t, res.inserted)
-	require.Error(t, res.err)
-	require.True(t, service.IsUsageLogCreateNotPersisted(res.err))
-}
-
 func (s *UsageLogRepoSuite) TestGetByID() {
 	user := mustCreateUser(s.T(), s.client, &service.User{Email: "getbyid@test.com"})
 	apiKey := mustCreateApiKey(s.T(), s.client, &service.APIKey{UserID: user.ID, Key: "sk-getbyid", Name: "k"})

backend/internal/repository/usage_log_repo_request_type_test.go

@@ -248,35 +248,6 @@ func TestUsageLogRepositoryGetStatsWithFiltersRequestTypePriority(t *testing.T)
 	require.NoError(t, mock.ExpectationsWereMet())
 }
 
-func TestUsageLogRepositoryGetUserSpendingRanking(t *testing.T) {
-	db, mock := newSQLMock(t)
-	repo := &usageLogRepository{sql: db}
-
-	start := time.Date(2025, 1, 1, 0, 0, 0, 0, time.UTC)
-	end := start.Add(24 * time.Hour)
-
-	rows := sqlmock.NewRows([]string{"user_id", "email", "actual_cost", "requests", "tokens", "total_actual_cost"}).
-		AddRow(int64(2), "beta@example.com", 12.5, int64(9), int64(900), 40.0).
-		AddRow(int64(1), "alpha@example.com", 12.5, int64(8), int64(800), 40.0).
-		AddRow(int64(3), "gamma@example.com", 4.25, int64(5), int64(300), 40.0)
-
-	mock.ExpectQuery("WITH user_spend AS \\(").
-		WithArgs(start, end, 12).
-		WillReturnRows(rows)
-
-	got, err := repo.GetUserSpendingRanking(context.Background(), start, end, 12)
-	require.NoError(t, err)
-	require.Equal(t, &usagestats.UserSpendingRankingResponse{
-		Ranking: []usagestats.UserSpendingRankingItem{
-			{UserID: 2, Email: "beta@example.com", ActualCost: 12.5, Requests: 9, Tokens: 900},
-			{UserID: 1, Email: "alpha@example.com", ActualCost: 12.5, Requests: 8, Tokens: 800},
-			{UserID: 3, Email: "gamma@example.com", ActualCost: 4.25, Requests: 5, Tokens: 300},
-		},
-		TotalActualCost: 40.0,
-	}, got)
-	require.NoError(t, mock.ExpectationsWereMet())
-}
-
 func TestBuildRequestTypeFilterConditionLegacyFallback(t *testing.T) {
 	tests := []struct {
 		name      string

backend/internal/repository/usage_log_repo_unit_test.go

@@ -3,11 +3,8 @@
 package repository
 
 import (
-	"strings"
 	"testing"
-	"time"
 
-	"github.com/Wei-Shaw/sub2api/internal/service"
 	"github.com/stretchr/testify/require"
 )
 
@@ -42,26 +39,3 @@ func TestSafeDateFormat(t *testing.T) {
 		})
 	}
 }
-
-func TestBuildUsageLogBatchInsertQuery_UsesConflictDoNothing(t *testing.T) {
-	log := &service.UsageLog{
-		UserID:       1,
-		APIKeyID:     2,
-		AccountID:    3,
-		RequestID:    "req-batch-no-update",
-		Model:        "gpt-5",
-		InputTokens:  10,
-		OutputTokens: 5,
-		TotalCost:    1.2,
-		ActualCost:   1.2,
-		CreatedAt:    time.Now().UTC(),
-	}
-	prepared := prepareUsageLogInsert(log)
-
-	query, _ := buildUsageLogBatchInsertQuery([]string{usageLogBatchKey(log.RequestID, log.APIKeyID)}, map[string]usageLogInsertPrepared{
-		usageLogBatchKey(log.RequestID, log.APIKeyID): prepared,
-	})
-
-	require.Contains(t, query, "ON CONFLICT (request_id, api_key_id) DO NOTHING")
-	require.NotContains(t, strings.ToUpper(query), "DO UPDATE")
-}

backend/internal/repository/user_group_rate_repo.go

@@ -98,9 +98,9 @@ func (r *userGroupRateRepository) GetByUserIDs(ctx context.Context, userIDs []in
 // GetByGroupID 获取指定分组下所有用户的专属倍率
 func (r *userGroupRateRepository) GetByGroupID(ctx context.Context, groupID int64) ([]service.UserGroupRateEntry, error) {
 	query := `
-		SELECT ugr.user_id, u.username, u.email, COALESCE(u.notes, ''), u.status, ugr.rate_multiplier
+		SELECT ugr.user_id, u.email, ugr.rate_multiplier
 		FROM user_group_rate_multipliers ugr
-		JOIN users u ON u.id = ugr.user_id
+		JOIN users u ON u.id = ugr.user_id AND u.deleted_at IS NULL
 		WHERE ugr.group_id = $1
 		ORDER BY ugr.user_id
 	`
@@ -113,7 +113,7 @@ func (r *userGroupRateRepository) GetByGroupID(ctx context.Context, groupID int6
 	var result []service.UserGroupRateEntry
 	for rows.Next() {
 		var entry service.UserGroupRateEntry
-		if err := rows.Scan(&entry.UserID, &entry.UserName, &entry.UserEmail, &entry.UserNotes, &entry.UserStatus, &entry.RateMultiplier); err != nil {
+		if err := rows.Scan(&entry.UserID, &entry.UserEmail, &entry.RateMultiplier); err != nil {
 			return nil, err
 		}
 		result = append(result, entry)
@@ -193,31 +193,6 @@ func (r *userGroupRateRepository) SyncUserGroupRates(ctx context.Context, userID
 	return nil
 }
 
-// SyncGroupRateMultipliers 批量同步分组的用户专属倍率（先删后插）
-func (r *userGroupRateRepository) SyncGroupRateMultipliers(ctx context.Context, groupID int64, entries []service.GroupRateMultiplierInput) error {
-	if _, err := r.sql.ExecContext(ctx, `DELETE FROM user_group_rate_multipliers WHERE group_id = $1`, groupID); err != nil {
-		return err
-	}
-	if len(entries) == 0 {
-		return nil
-	}
-	userIDs := make([]int64, len(entries))
-	rates := make([]float64, len(entries))
-	for i, e := range entries {
-		userIDs[i] = e.UserID
-		rates[i] = e.RateMultiplier
-	}
-	now := time.Now()
-	_, err := r.sql.ExecContext(ctx, `
-		INSERT INTO user_group_rate_multipliers (user_id, group_id, rate_multiplier, created_at, updated_at)
-		SELECT data.user_id, $1::bigint, data.rate_multiplier, $2::timestamptz, $2::timestamptz
-		FROM unnest($3::bigint[], $4::double precision[]) AS data(user_id, rate_multiplier)
-		ON CONFLICT (user_id, group_id)
-		DO UPDATE SET rate_multiplier = EXCLUDED.rate_multiplier, updated_at = EXCLUDED.updated_at
-	`, groupID, now, pq.Array(userIDs), pq.Array(rates))
-	return err
-}
-
 // DeleteByGroupID 删除指定分组的所有用户专属倍率
 func (r *userGroupRateRepository) DeleteByGroupID(ctx context.Context, groupID int64) error {
 	_, err := r.sql.ExecContext(ctx, `DELETE FROM user_group_rate_multipliers WHERE group_id = $1`, groupID)

backend/internal/repository/wire.go

@@ -62,7 +62,6 @@ var ProviderSet = wire.NewSet(
 	NewAnnouncementRepository,
 	NewAnnouncementReadRepository,
 	NewUsageLogRepository,
-	NewUsageBillingRepository,
 	NewIdempotencyRepository,
 	NewUsageCleanupRepository,
 	NewDashboardAggregationRepository,

backend/internal/server/api_contract_test.go

@@ -645,7 +645,7 @@ func newContractDeps(t *testing.T) *contractDeps {
 	settingRepo := newStubSettingRepo()
 	settingService := service.NewSettingService(settingRepo, cfg)
 
-	adminService := service.NewAdminService(userRepo, groupRepo, &accountRepo, nil, proxyRepo, apiKeyRepo, redeemRepo, nil, nil, nil, nil, nil, nil, nil, nil, nil, nil)
+	adminService := service.NewAdminService(userRepo, groupRepo, &accountRepo, nil, proxyRepo, apiKeyRepo, redeemRepo, nil, nil, nil, nil, nil, nil, nil, nil, nil)
 	authHandler := handler.NewAuthHandler(cfg, nil, userService, settingService, nil, redeemService, nil)
 	apiKeyHandler := handler.NewAPIKeyHandler(apiKeyService)
 	usageHandler := handler.NewUsageHandler(usageService, apiKeyService)
@@ -1635,10 +1635,6 @@ func (r *stubUsageLogRepo) GetUserUsageTrend(ctx context.Context, startTime, end
 	return nil, errors.New("not implemented")
 }
 
-func (r *stubUsageLogRepo) GetUserSpendingRanking(ctx context.Context, startTime, endTime time.Time, limit int) (*usagestats.UserSpendingRankingResponse, error) {
-	return nil, errors.New("not implemented")
-}
-
 func (r *stubUsageLogRepo) GetUserStatsAggregated(ctx context.Context, userID int64, startTime, endTime time.Time) (*usagestats.UsageStats, error) {
 	logs := r.userLogs[userID]
 	if len(logs) == 0 {

backend/internal/server/routes/admin.go

@@ -192,7 +192,6 @@ func registerDashboardRoutes(admin *gin.RouterGroup, h *handler.Handlers) {
 		dashboard.GET("/groups", h.Admin.Dashboard.GetGroupStats)
 		dashboard.GET("/api-keys-trend", h.Admin.Dashboard.GetAPIKeyUsageTrend)
 		dashboard.GET("/users-trend", h.Admin.Dashboard.GetUserUsageTrend)
-		dashboard.GET("/users-ranking", h.Admin.Dashboard.GetUserSpendingRanking)
 		dashboard.POST("/users-usage", h.Admin.Dashboard.GetBatchUsersUsage)
 		dashboard.POST("/api-keys-usage", h.Admin.Dashboard.GetBatchAPIKeysUsage)
 		dashboard.POST("/aggregation/backfill", h.Admin.Dashboard.BackfillAggregation)
@@ -230,8 +229,6 @@ func registerGroupRoutes(admin *gin.RouterGroup, h *handler.Handlers) {
 		groups.DELETE("/:id", h.Admin.Group.Delete)
 		groups.GET("/:id/stats", h.Admin.Group.GetStats)
 		groups.GET("/:id/rate-multipliers", h.Admin.Group.GetGroupRateMultipliers)
-		groups.PUT("/:id/rate-multipliers", h.Admin.Group.BatchSetGroupRateMultipliers)
-		groups.DELETE("/:id/rate-multipliers", h.Admin.Group.ClearGroupRateMultipliers)
 		groups.GET("/:id/api-keys", h.Admin.Group.GetGroupAPIKeys)
 	}
 }

backend/internal/service/account.go

@@ -412,7 +412,6 @@ func (a *Account) resolveModelMapping(rawMapping map[string]any) map[string]stri
 		if a.Platform == domain.PlatformAntigravity {
 			return domain.DefaultAntigravityModelMapping
 		}
-		// Bedrock 默认映射由 forwardBedrock 统一处理（需配合 region prefix 调整）
 		return nil
 	}
 	if len(rawMapping) == 0 {
@@ -765,14 +764,6 @@ func (a *Account) IsInterceptWarmupEnabled() bool {
 	return false
 }
 
-func (a *Account) IsBedrock() bool {
-	return a.Platform == PlatformAnthropic && (a.Type == AccountTypeBedrock || a.Type == AccountTypeBedrockAPIKey)
-}
-
-func (a *Account) IsBedrockAPIKey() bool {
-	return a.Platform == PlatformAnthropic && a.Type == AccountTypeBedrockAPIKey
-}
-
 func (a *Account) IsOpenAI() bool {
 	return a.Platform == PlatformOpenAI
 }

backend/internal/service/account_test_service.go

@@ -207,14 +207,14 @@ func (s *AccountTestService) testClaudeAccountConnection(c *gin.Context, account
 		testModelID = claude.DefaultTestModel
 	}
 
-	// API Key 账号测试连接时也需要应用通配符模型映射。
+	// For API Key accounts with model mapping, map the model
 	if account.Type == "apikey" {
-		testModelID = account.GetMappedModel(testModelID)
-	}
-
-	// Bedrock accounts use a separate test path
-	if account.IsBedrock() {
-		return s.testBedrockAccountConnection(c, ctx, account, testModelID)
+		mapping := account.GetModelMapping()
+		if len(mapping) > 0 {
+			if mappedModel, exists := mapping[testModelID]; exists {
+				testModelID = mappedModel
+			}
+		}
 	}
 
 	// Determine authentication method and API URL
@@ -312,109 +312,6 @@ func (s *AccountTestService) testClaudeAccountConnection(c *gin.Context, account
 	return s.processClaudeStream(c, resp.Body)
 }
 
-// testBedrockAccountConnection tests a Bedrock (SigV4 or API Key) account using non-streaming invoke
-func (s *AccountTestService) testBedrockAccountConnection(c *gin.Context, ctx context.Context, account *Account, testModelID string) error {
-	region := bedrockRuntimeRegion(account)
-	resolvedModelID, ok := ResolveBedrockModelID(account, testModelID)
-	if !ok {
-		return s.sendErrorAndEnd(c, fmt.Sprintf("Unsupported Bedrock model: %s", testModelID))
-	}
-	testModelID = resolvedModelID
-
-	// Set SSE headers (test UI expects SSE)
-	c.Writer.Header().Set("Content-Type", "text/event-stream")
-	c.Writer.Header().Set("Cache-Control", "no-cache")
-	c.Writer.Header().Set("Connection", "keep-alive")
-	c.Writer.Header().Set("X-Accel-Buffering", "no")
-	c.Writer.Flush()
-
-	// Create a minimal Bedrock-compatible payload (no stream, no cache_control)
-	bedrockPayload := map[string]any{
-		"anthropic_version": "bedrock-2023-05-31",
-		"messages": []map[string]any{
-			{
-				"role": "user",
-				"content": []map[string]any{
-					{
-						"type": "text",
-						"text": "hi",
-					},
-				},
-			},
-		},
-		"max_tokens":  256,
-		"temperature": 1,
-	}
-	bedrockBody, _ := json.Marshal(bedrockPayload)
-
-	// Use non-streaming endpoint (response is standard Claude JSON)
-	apiURL := BuildBedrockURL(region, testModelID, false)
-
-	s.sendEvent(c, TestEvent{Type: "test_start", Model: testModelID})
-
-	req, err := http.NewRequestWithContext(ctx, "POST", apiURL, bytes.NewReader(bedrockBody))
-	if err != nil {
-		return s.sendErrorAndEnd(c, "Failed to create request")
-	}
-	req.Header.Set("Content-Type", "application/json")
-
-	// Sign or set auth based on account type
-	if account.IsBedrockAPIKey() {
-		apiKey := account.GetCredential("api_key")
-		if apiKey == "" {
-			return s.sendErrorAndEnd(c, "No API key available")
-		}
-		req.Header.Set("Authorization", "Bearer "+apiKey)
-	} else {
-		signer, err := NewBedrockSignerFromAccount(account)
-		if err != nil {
-			return s.sendErrorAndEnd(c, fmt.Sprintf("Failed to create Bedrock signer: %s", err.Error()))
-		}
-		if err := signer.SignRequest(ctx, req, bedrockBody); err != nil {
-			return s.sendErrorAndEnd(c, fmt.Sprintf("Failed to sign request: %s", err.Error()))
-		}
-	}
-
-	proxyURL := ""
-	if account.ProxyID != nil && account.Proxy != nil {
-		proxyURL = account.Proxy.URL()
-	}
-
-	resp, err := s.httpUpstream.DoWithTLS(req, proxyURL, account.ID, account.Concurrency, false)
-	if err != nil {
-		return s.sendErrorAndEnd(c, fmt.Sprintf("Request failed: %s", err.Error()))
-	}
-	defer func() { _ = resp.Body.Close() }()
-
-	body, _ := io.ReadAll(resp.Body)
-
-	if resp.StatusCode != http.StatusOK {
-		return s.sendErrorAndEnd(c, fmt.Sprintf("API returned %d: %s", resp.StatusCode, string(body)))
-	}
-
-	// Bedrock non-streaming response is standard Claude JSON, extract the text
-	var result struct {
-		Content []struct {
-			Text string `json:"text"`
-		} `json:"content"`
-	}
-	if err := json.Unmarshal(body, &result); err != nil {
-		return s.sendErrorAndEnd(c, fmt.Sprintf("Failed to parse response: %s", err.Error()))
-	}
-
-	text := ""
-	if len(result.Content) > 0 {
-		text = result.Content[0].Text
-	}
-	if text == "" {
-		text = "(empty response)"
-	}
-
-	s.sendEvent(c, TestEvent{Type: "content", Text: text})
-	s.sendEvent(c, TestEvent{Type: "test_complete", Success: true})
-	return nil
-}
-
 // testOpenAIAccountConnection tests an OpenAI account's connection
 func (s *AccountTestService) testOpenAIAccountConnection(c *gin.Context, account *Account, modelID string) error {
 	ctx := c.Request.Context()

backend/internal/service/account_usage_service.go

@@ -47,7 +47,6 @@ type UsageLogRepository interface {
 	GetGroupStatsWithFilters(ctx context.Context, startTime, endTime time.Time, userID, apiKeyID, accountID, groupID int64, requestType *int16, stream *bool, billingType *int8) ([]usagestats.GroupStat, error)
 	GetAPIKeyUsageTrend(ctx context.Context, startTime, endTime time.Time, granularity string, limit int) ([]usagestats.APIKeyUsageTrendPoint, error)
 	GetUserUsageTrend(ctx context.Context, startTime, endTime time.Time, granularity string, limit int) ([]usagestats.UserUsageTrendPoint, error)
-	GetUserSpendingRanking(ctx context.Context, startTime, endTime time.Time, limit int) (*usagestats.UserSpendingRankingResponse, error)
 	GetBatchUserUsageStats(ctx context.Context, userIDs []int64, startTime, endTime time.Time) (map[int64]*usagestats.BatchUserUsageStats, error)
 	GetBatchAPIKeyUsageStats(ctx context.Context, apiKeyIDs []int64, startTime, endTime time.Time) (map[int64]*usagestats.BatchAPIKeyUsageStats, error)
 

backend/internal/service/admin_service.go

@@ -43,8 +43,6 @@ type AdminService interface {
 	DeleteGroup(ctx context.Context, id int64) error
 	GetGroupAPIKeys(ctx context.Context, groupID int64, page, pageSize int) ([]APIKey, int64, error)
 	GetGroupRateMultipliers(ctx context.Context, groupID int64) ([]UserGroupRateEntry, error)
-	ClearGroupRateMultipliers(ctx context.Context, groupID int64) error
-	BatchSetGroupRateMultipliers(ctx context.Context, groupID int64, entries []GroupRateMultiplierInput) error
 	UpdateGroupSortOrders(ctx context.Context, updates []GroupSortOrderUpdate) error
 
 	// API Key management (admin)
@@ -60,8 +58,6 @@ type AdminService interface {
 	RefreshAccountCredentials(ctx context.Context, id int64) (*Account, error)
 	ClearAccountError(ctx context.Context, id int64) (*Account, error)
 	SetAccountError(ctx context.Context, id int64, errorMsg string) error
-	// EnsureOpenAIPrivacy 检查 OpenAI OAuth 账号 privacy_mode，未设置则尝试关闭训练数据共享并持久化。
-	EnsureOpenAIPrivacy(ctx context.Context, account *Account) string
 	SetAccountSchedulable(ctx context.Context, id int64, schedulable bool) (*Account, error)
 	BulkUpdateAccounts(ctx context.Context, input *BulkUpdateAccountsInput) (*BulkUpdateAccountsResult, error)
 	CheckMixedChannelRisk(ctx context.Context, currentAccountID int64, currentAccountPlatform string, groupIDs []int64) error
@@ -143,9 +139,10 @@ type CreateGroupInput struct {
 	// 无效请求兜底分组 ID（仅 anthropic 平台使用）
 	FallbackGroupIDOnInvalidRequest *int64
 	// 模型路由配置（仅 anthropic 平台使用）
-	ModelRouting        map[string][]int64
-	ModelRoutingEnabled bool // 是否启用模型路由
-	MCPXMLInject        *bool
+	ModelRouting             map[string][]int64
+	ModelRoutingEnabled      bool // 是否启用模型路由
+	MCPXMLInject             *bool
+	SimulateClaudeMaxEnabled *bool
 	// 支持的模型系列（仅 antigravity 平台使用）
 	SupportedModelScopes []string
 	// Sora 存储配额
@@ -182,9 +179,10 @@ type UpdateGroupInput struct {
 	// 无效请求兜底分组 ID（仅 anthropic 平台使用）
 	FallbackGroupIDOnInvalidRequest *int64
 	// 模型路由配置（仅 anthropic 平台使用）
-	ModelRouting        map[string][]int64
-	ModelRoutingEnabled *bool // 是否启用模型路由
-	MCPXMLInject        *bool
+	ModelRouting             map[string][]int64
+	ModelRoutingEnabled      *bool // 是否启用模型路由
+	MCPXMLInject             *bool
+	SimulateClaudeMaxEnabled *bool
 	// 支持的模型系列（仅 antigravity 平台使用）
 	SupportedModelScopes *[]string
 	// Sora 存储配额
@@ -368,6 +366,10 @@ type ProxyExitInfoProber interface {
 	ProbeProxy(ctx context.Context, proxyURL string) (*ProxyExitInfo, int64, error)
 }
 
+type groupExistenceBatchReader interface {
+	ExistsByIDs(ctx context.Context, ids []int64) (map[int64]bool, error)
+}
+
 type proxyQualityTarget struct {
 	Target          string
 	URL             string
@@ -438,17 +440,12 @@ type adminServiceImpl struct {
 	settingService       *SettingService
 	defaultSubAssigner   DefaultSubscriptionAssigner
 	userSubRepo          UserSubscriptionRepository
-	privacyClientFactory PrivacyClientFactory
 }
 
 type userGroupRateBatchReader interface {
 	GetByUserIDs(ctx context.Context, userIDs []int64) (map[int64]map[int64]float64, error)
 }
 
-type groupExistenceBatchReader interface {
-	ExistsByIDs(ctx context.Context, ids []int64) (map[int64]bool, error)
-}
-
 // NewAdminService creates a new AdminService
 func NewAdminService(
 	userRepo UserRepository,
@@ -467,7 +464,6 @@ func NewAdminService(
 	settingService *SettingService,
 	defaultSubAssigner DefaultSubscriptionAssigner,
 	userSubRepo UserSubscriptionRepository,
-	privacyClientFactory PrivacyClientFactory,
 ) AdminService {
 	return &adminServiceImpl{
 		userRepo:             userRepo,
@@ -486,7 +482,6 @@ func NewAdminService(
 		settingService:       settingService,
 		defaultSubAssigner:   defaultSubAssigner,
 		userSubRepo:          userSubRepo,
-		privacyClientFactory: privacyClientFactory,
 	}
 }
 
@@ -868,6 +863,13 @@ func (s *adminServiceImpl) CreateGroup(ctx context.Context, input *CreateGroupIn
 	if input.MCPXMLInject != nil {
 		mcpXMLInject = *input.MCPXMLInject
 	}
+	simulateClaudeMaxEnabled := false
+	if input.SimulateClaudeMaxEnabled != nil {
+		if platform != PlatformAnthropic && *input.SimulateClaudeMaxEnabled {
+			return nil, fmt.Errorf("simulate_claude_max_enabled only supported for anthropic groups")
+		}
+		simulateClaudeMaxEnabled = *input.SimulateClaudeMaxEnabled
+	}
 
 	// 如果指定了复制账号的源分组，先获取账号 ID 列表
 	var accountIDsToCopy []int64
@@ -924,6 +926,7 @@ func (s *adminServiceImpl) CreateGroup(ctx context.Context, input *CreateGroupIn
 		FallbackGroupIDOnInvalidRequest: fallbackOnInvalidRequest,
 		ModelRouting:                    input.ModelRouting,
 		MCPXMLInject:                    mcpXMLInject,
+		SimulateClaudeMaxEnabled:        simulateClaudeMaxEnabled,
 		SupportedModelScopes:            input.SupportedModelScopes,
 		SoraStorageQuotaBytes:           input.SoraStorageQuotaBytes,
 		AllowMessagesDispatch:           input.AllowMessagesDispatch,
@@ -1135,6 +1138,15 @@ func (s *adminServiceImpl) UpdateGroup(ctx context.Context, id int64, input *Upd
 	if input.MCPXMLInject != nil {
 		group.MCPXMLInject = *input.MCPXMLInject
 	}
+	if input.SimulateClaudeMaxEnabled != nil {
+		if group.Platform != PlatformAnthropic && *input.SimulateClaudeMaxEnabled {
+			return nil, fmt.Errorf("simulate_claude_max_enabled only supported for anthropic groups")
+		}
+		group.SimulateClaudeMaxEnabled = *input.SimulateClaudeMaxEnabled
+	}
+	if group.Platform != PlatformAnthropic {
+		group.SimulateClaudeMaxEnabled = false
+	}
 
 	// 支持的模型系列（仅 antigravity 平台使用）
 	if input.SupportedModelScopes != nil {
@@ -1259,20 +1271,6 @@ func (s *adminServiceImpl) GetGroupRateMultipliers(ctx context.Context, groupID
 	return s.userGroupRateRepo.GetByGroupID(ctx, groupID)
 }
 
-func (s *adminServiceImpl) ClearGroupRateMultipliers(ctx context.Context, groupID int64) error {
-	if s.userGroupRateRepo == nil {
-		return nil
-	}
-	return s.userGroupRateRepo.DeleteByGroupID(ctx, groupID)
-}
-
-func (s *adminServiceImpl) BatchSetGroupRateMultipliers(ctx context.Context, groupID int64, entries []GroupRateMultiplierInput) error {
-	if s.userGroupRateRepo == nil {
-		return nil
-	}
-	return s.userGroupRateRepo.SyncGroupRateMultipliers(ctx, groupID, entries)
-}
-
 func (s *adminServiceImpl) UpdateGroupSortOrders(ctx context.Context, updates []GroupSortOrderUpdate) error {
 	return s.groupRepo.UpdateSortOrders(ctx, updates)
 }
@@ -2531,39 +2529,3 @@ func (e *MixedChannelError) Error() string {
 func (s *adminServiceImpl) ResetAccountQuota(ctx context.Context, id int64) error {
 	return s.accountRepo.ResetQuotaUsed(ctx, id)
 }
-
-// EnsureOpenAIPrivacy 检查 OpenAI OAuth 账号是否已设置 privacy_mode，
-// 未设置则调用 disableOpenAITraining 并持久化到 Extra，返回设置的 mode 值。
-func (s *adminServiceImpl) EnsureOpenAIPrivacy(ctx context.Context, account *Account) string {
-	if account.Platform != PlatformOpenAI || account.Type != AccountTypeOAuth {
-		return ""
-	}
-	if s.privacyClientFactory == nil {
-		return ""
-	}
-	if account.Extra != nil {
-		if _, ok := account.Extra["privacy_mode"]; ok {
-			return ""
-		}
-	}
-
-	token, _ := account.Credentials["access_token"].(string)
-	if token == "" {
-		return ""
-	}
-
-	var proxyURL string
-	if account.ProxyID != nil {
-		if p, err := s.proxyRepo.GetByID(ctx, *account.ProxyID); err == nil && p != nil {
-			proxyURL = p.URL()
-		}
-	}
-
-	mode := disableOpenAITraining(ctx, s.privacyClientFactory, token, proxyURL)
-	if mode == "" {
-		return ""
-	}
-
-	_ = s.accountRepo.UpdateExtra(ctx, account.ID, map[string]any{"privacy_mode": mode})
-	return mode
-}

backend/internal/service/admin_service_bulk_update_test.go

@@ -43,6 +43,16 @@ func (s *accountRepoStubForBulkUpdate) BindGroups(_ context.Context, accountID i
 	return nil
 }
 
+func (s *accountRepoStubForBulkUpdate) ListByGroup(_ context.Context, groupID int64) ([]Account, error) {
+	if err, ok := s.listByGroupErr[groupID]; ok {
+		return nil, err
+	}
+	if rows, ok := s.listByGroupData[groupID]; ok {
+		return rows, nil
+	}
+	return nil, nil
+}
+
 func (s *accountRepoStubForBulkUpdate) GetByIDs(_ context.Context, ids []int64) ([]*Account, error) {
 	s.getByIDsCalled = true
 	s.getByIDsIDs = append([]int64{}, ids...)
@@ -63,16 +73,6 @@ func (s *accountRepoStubForBulkUpdate) GetByID(_ context.Context, id int64) (*Ac
 	return nil, errors.New("account not found")
 }
 
-func (s *accountRepoStubForBulkUpdate) ListByGroup(_ context.Context, groupID int64) ([]Account, error) {
-	if err, ok := s.listByGroupErr[groupID]; ok {
-		return nil, err
-	}
-	if rows, ok := s.listByGroupData[groupID]; ok {
-		return rows, nil
-	}
-	return nil, nil
-}
-
 // TestAdminService_BulkUpdateAccounts_AllSuccessIDs 验证批量更新成功时返回 success_ids/failed_ids。
 func TestAdminService_BulkUpdateAccounts_AllSuccessIDs(t *testing.T) {
 	repo := &accountRepoStubForBulkUpdate{}

backend/internal/service/admin_service_group_rate_test.go

@@ -1,176 +0,0 @@
-//go:build unit
-
-package service
-
-import (
-	"context"
-	"errors"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-// userGroupRateRepoStubForGroupRate implements UserGroupRateRepository for group rate tests.
-type userGroupRateRepoStubForGroupRate struct {
-	getByGroupIDData map[int64][]UserGroupRateEntry
-	getByGroupIDErr  error
-
-	deletedGroupIDs  []int64
-	deleteByGroupErr error
-
-	syncedGroupID int64
-	syncedEntries []GroupRateMultiplierInput
-	syncGroupErr  error
-}
-
-func (s *userGroupRateRepoStubForGroupRate) GetByUserID(_ context.Context, _ int64) (map[int64]float64, error) {
-	panic("unexpected GetByUserID call")
-}
-
-func (s *userGroupRateRepoStubForGroupRate) GetByUserAndGroup(_ context.Context, _, _ int64) (*float64, error) {
-	panic("unexpected GetByUserAndGroup call")
-}
-
-func (s *userGroupRateRepoStubForGroupRate) GetByGroupID(_ context.Context, groupID int64) ([]UserGroupRateEntry, error) {
-	if s.getByGroupIDErr != nil {
-		return nil, s.getByGroupIDErr
-	}
-	return s.getByGroupIDData[groupID], nil
-}
-
-func (s *userGroupRateRepoStubForGroupRate) SyncUserGroupRates(_ context.Context, _ int64, _ map[int64]*float64) error {
-	panic("unexpected SyncUserGroupRates call")
-}
-
-func (s *userGroupRateRepoStubForGroupRate) SyncGroupRateMultipliers(_ context.Context, groupID int64, entries []GroupRateMultiplierInput) error {
-	s.syncedGroupID = groupID
-	s.syncedEntries = entries
-	return s.syncGroupErr
-}
-
-func (s *userGroupRateRepoStubForGroupRate) DeleteByGroupID(_ context.Context, groupID int64) error {
-	s.deletedGroupIDs = append(s.deletedGroupIDs, groupID)
-	return s.deleteByGroupErr
-}
-
-func (s *userGroupRateRepoStubForGroupRate) DeleteByUserID(_ context.Context, _ int64) error {
-	panic("unexpected DeleteByUserID call")
-}
-
-func TestAdminService_GetGroupRateMultipliers(t *testing.T) {
-	t.Run("returns entries for group", func(t *testing.T) {
-		repo := &userGroupRateRepoStubForGroupRate{
-			getByGroupIDData: map[int64][]UserGroupRateEntry{
-				10: {
-					{UserID: 1, UserName: "alice", UserEmail: "alice@test.com", RateMultiplier: 1.5},
-					{UserID: 2, UserName: "bob", UserEmail: "bob@test.com", RateMultiplier: 0.8},
-				},
-			},
-		}
-		svc := &adminServiceImpl{userGroupRateRepo: repo}
-
-		entries, err := svc.GetGroupRateMultipliers(context.Background(), 10)
-		require.NoError(t, err)
-		require.Len(t, entries, 2)
-		require.Equal(t, int64(1), entries[0].UserID)
-		require.Equal(t, "alice", entries[0].UserName)
-		require.Equal(t, 1.5, entries[0].RateMultiplier)
-		require.Equal(t, int64(2), entries[1].UserID)
-		require.Equal(t, 0.8, entries[1].RateMultiplier)
-	})
-
-	t.Run("returns nil when repo is nil", func(t *testing.T) {
-		svc := &adminServiceImpl{userGroupRateRepo: nil}
-
-		entries, err := svc.GetGroupRateMultipliers(context.Background(), 10)
-		require.NoError(t, err)
-		require.Nil(t, entries)
-	})
-
-	t.Run("returns empty slice for group with no entries", func(t *testing.T) {
-		repo := &userGroupRateRepoStubForGroupRate{
-			getByGroupIDData: map[int64][]UserGroupRateEntry{},
-		}
-		svc := &adminServiceImpl{userGroupRateRepo: repo}
-
-		entries, err := svc.GetGroupRateMultipliers(context.Background(), 99)
-		require.NoError(t, err)
-		require.Nil(t, entries)
-	})
-
-	t.Run("propagates repo error", func(t *testing.T) {
-		repo := &userGroupRateRepoStubForGroupRate{
-			getByGroupIDErr: errors.New("db error"),
-		}
-		svc := &adminServiceImpl{userGroupRateRepo: repo}
-
-		_, err := svc.GetGroupRateMultipliers(context.Background(), 10)
-		require.Error(t, err)
-		require.Contains(t, err.Error(), "db error")
-	})
-}
-
-func TestAdminService_ClearGroupRateMultipliers(t *testing.T) {
-	t.Run("deletes by group ID", func(t *testing.T) {
-		repo := &userGroupRateRepoStubForGroupRate{}
-		svc := &adminServiceImpl{userGroupRateRepo: repo}
-
-		err := svc.ClearGroupRateMultipliers(context.Background(), 42)
-		require.NoError(t, err)
-		require.Equal(t, []int64{42}, repo.deletedGroupIDs)
-	})
-
-	t.Run("returns nil when repo is nil", func(t *testing.T) {
-		svc := &adminServiceImpl{userGroupRateRepo: nil}
-
-		err := svc.ClearGroupRateMultipliers(context.Background(), 42)
-		require.NoError(t, err)
-	})
-
-	t.Run("propagates repo error", func(t *testing.T) {
-		repo := &userGroupRateRepoStubForGroupRate{
-			deleteByGroupErr: errors.New("delete failed"),
-		}
-		svc := &adminServiceImpl{userGroupRateRepo: repo}
-
-		err := svc.ClearGroupRateMultipliers(context.Background(), 42)
-		require.Error(t, err)
-		require.Contains(t, err.Error(), "delete failed")
-	})
-}
-
-func TestAdminService_BatchSetGroupRateMultipliers(t *testing.T) {
-	t.Run("syncs entries to repo", func(t *testing.T) {
-		repo := &userGroupRateRepoStubForGroupRate{}
-		svc := &adminServiceImpl{userGroupRateRepo: repo}
-
-		entries := []GroupRateMultiplierInput{
-			{UserID: 1, RateMultiplier: 1.5},
-			{UserID: 2, RateMultiplier: 0.8},
-		}
-		err := svc.BatchSetGroupRateMultipliers(context.Background(), 10, entries)
-		require.NoError(t, err)
-		require.Equal(t, int64(10), repo.syncedGroupID)
-		require.Equal(t, entries, repo.syncedEntries)
-	})
-
-	t.Run("returns nil when repo is nil", func(t *testing.T) {
-		svc := &adminServiceImpl{userGroupRateRepo: nil}
-
-		err := svc.BatchSetGroupRateMultipliers(context.Background(), 10, nil)
-		require.NoError(t, err)
-	})
-
-	t.Run("propagates repo error", func(t *testing.T) {
-		repo := &userGroupRateRepoStubForGroupRate{
-			syncGroupErr: errors.New("sync failed"),
-		}
-		svc := &adminServiceImpl{userGroupRateRepo: repo}
-
-		err := svc.BatchSetGroupRateMultipliers(context.Background(), 10, []GroupRateMultiplierInput{
-			{UserID: 1, RateMultiplier: 1.0},
-		})
-		require.Error(t, err)
-		require.Contains(t, err.Error(), "sync failed")
-	})
-}

backend/internal/service/admin_service_group_test.go

@@ -785,3 +785,57 @@ func TestAdminService_UpdateGroup_InvalidRequestFallbackAllowsAntigravity(t *tes
 	require.NotNil(t, repo.updated)
 	require.Equal(t, fallbackID, *repo.updated.FallbackGroupIDOnInvalidRequest)
 }
+
+func TestAdminService_CreateGroup_SimulateClaudeMaxRequiresAnthropic(t *testing.T) {
+	repo := &groupRepoStubForAdmin{}
+	svc := &adminServiceImpl{groupRepo: repo}
+
+	enabled := true
+	_, err := svc.CreateGroup(context.Background(), &CreateGroupInput{
+		Name:                     "openai-group",
+		Platform:                 PlatformOpenAI,
+		SimulateClaudeMaxEnabled: &enabled,
+	})
+	require.Error(t, err)
+	require.Contains(t, err.Error(), "simulate_claude_max_enabled only supported for anthropic groups")
+	require.Nil(t, repo.created)
+}
+
+func TestAdminService_UpdateGroup_SimulateClaudeMaxRequiresAnthropic(t *testing.T) {
+	existingGroup := &Group{
+		ID:       1,
+		Name:     "openai-group",
+		Platform: PlatformOpenAI,
+		Status:   StatusActive,
+	}
+	repo := &groupRepoStubForAdmin{getByID: existingGroup}
+	svc := &adminServiceImpl{groupRepo: repo}
+
+	enabled := true
+	_, err := svc.UpdateGroup(context.Background(), 1, &UpdateGroupInput{
+		SimulateClaudeMaxEnabled: &enabled,
+	})
+	require.Error(t, err)
+	require.Contains(t, err.Error(), "simulate_claude_max_enabled only supported for anthropic groups")
+	require.Nil(t, repo.updated)
+}
+
+func TestAdminService_UpdateGroup_ClearsSimulateClaudeMaxWhenPlatformChanges(t *testing.T) {
+	existingGroup := &Group{
+		ID:                       1,
+		Name:                     "anthropic-group",
+		Platform:                 PlatformAnthropic,
+		Status:                   StatusActive,
+		SimulateClaudeMaxEnabled: true,
+	}
+	repo := &groupRepoStubForAdmin{getByID: existingGroup}
+	svc := &adminServiceImpl{groupRepo: repo}
+
+	group, err := svc.UpdateGroup(context.Background(), 1, &UpdateGroupInput{
+		Platform: PlatformOpenAI,
+	})
+	require.NoError(t, err)
+	require.NotNil(t, group)
+	require.NotNil(t, repo.updated)
+	require.False(t, repo.updated.SimulateClaudeMaxEnabled)
+}

backend/internal/service/admin_service_list_users_test.go

@@ -68,15 +68,11 @@ func (s *userGroupRateRepoStubForListUsers) SyncUserGroupRates(_ context.Context
 	panic("unexpected SyncUserGroupRates call")
 }
 
-func (s *userGroupRateRepoStubForListUsers) GetByGroupID(_ context.Context, _ int64) ([]UserGroupRateEntry, error) {
+func (s *userGroupRateRepoStubForListUsers) GetByGroupID(_ context.Context, groupID int64) ([]UserGroupRateEntry, error) {
 	panic("unexpected GetByGroupID call")
 }
 
-func (s *userGroupRateRepoStubForListUsers) SyncGroupRateMultipliers(_ context.Context, _ int64, _ []GroupRateMultiplierInput) error {
-	panic("unexpected SyncGroupRateMultipliers call")
-}
-
-func (s *userGroupRateRepoStubForListUsers) DeleteByGroupID(_ context.Context, _ int64) error {
+func (s *userGroupRateRepoStubForListUsers) DeleteByGroupID(_ context.Context, groupID int64) error {
 	panic("unexpected DeleteByGroupID call")
 }
 

backend/internal/service/antigravity_gateway_service.go

@@ -1673,7 +1673,7 @@ func (s *AntigravityGatewayService) Forward(ctx context.Context, c *gin.Context,
 	var clientDisconnect bool
 	if claudeReq.Stream {
 		// 客户端要求流式，直接透传转换
-		streamRes, err := s.handleClaudeStreamingResponse(c, resp, startTime, originalModel)
+		streamRes, err := s.handleClaudeStreamingResponse(c, resp, startTime, originalModel, account.ID)
 		if err != nil {
 			logger.LegacyPrintf("service.antigravity_gateway", "%s status=stream_error error=%v", prefix, err)
 			return nil, err
@@ -1683,7 +1683,7 @@ func (s *AntigravityGatewayService) Forward(ctx context.Context, c *gin.Context,
 		clientDisconnect = streamRes.clientDisconnect
 	} else {
 		// 客户端要求非流式，收集流式响应后转换返回
-		streamRes, err := s.handleClaudeStreamToNonStreaming(c, resp, startTime, originalModel)
+		streamRes, err := s.handleClaudeStreamToNonStreaming(c, resp, startTime, originalModel, account.ID)
 		if err != nil {
 			logger.LegacyPrintf("service.antigravity_gateway", "%s status=stream_collect_error error=%v", prefix, err)
 			return nil, err
@@ -1692,6 +1692,9 @@ func (s *AntigravityGatewayService) Forward(ctx context.Context, c *gin.Context,
 		firstTokenMs = streamRes.firstTokenMs
 	}
 
+	// Claude Max cache billing: 同步 ForwardResult.Usage 与客户端响应体一致
+	applyClaudeMaxCacheBillingPolicyToUsage(usage, parsedRequestFromGinContext(c), claudeMaxGroupFromGinContext(c), originalModel, account.ID)
+
 	return &ForwardResult{
 		RequestID:        requestID,
 		Usage:            *usage,
@@ -3595,7 +3598,7 @@ func (s *AntigravityGatewayService) writeGoogleError(c *gin.Context, status int,
 
 // handleClaudeStreamToNonStreaming 收集上游流式响应，转换为 Claude 非流式格式返回
 // 用于处理客户端非流式请求但上游只支持流式的情况
-func (s *AntigravityGatewayService) handleClaudeStreamToNonStreaming(c *gin.Context, resp *http.Response, startTime time.Time, originalModel string) (*antigravityStreamResult, error) {
+func (s *AntigravityGatewayService) handleClaudeStreamToNonStreaming(c *gin.Context, resp *http.Response, startTime time.Time, originalModel string, accountID int64) (*antigravityStreamResult, error) {
 	scanner := bufio.NewScanner(resp.Body)
 	maxLineSize := defaultMaxLineSize
 	if s.settingService.cfg != nil && s.settingService.cfg.Gateway.MaxLineSize > 0 {
@@ -3753,6 +3756,9 @@ returnResponse:
 		return nil, s.writeClaudeError(c, http.StatusBadGateway, "upstream_error", "Failed to parse upstream response")
 	}
 
+	// Claude Max cache billing simulation (non-streaming)
+	claudeResp = applyClaudeMaxNonStreamingRewrite(c, claudeResp, agUsage, originalModel, accountID)
+
 	c.Data(http.StatusOK, "application/json", claudeResp)
 
 	// 转换为 service.ClaudeUsage
@@ -3767,7 +3773,7 @@ returnResponse:
 }
 
 // handleClaudeStreamingResponse 处理 Claude 流式响应（Gemini SSE → Claude SSE 转换）
-func (s *AntigravityGatewayService) handleClaudeStreamingResponse(c *gin.Context, resp *http.Response, startTime time.Time, originalModel string) (*antigravityStreamResult, error) {
+func (s *AntigravityGatewayService) handleClaudeStreamingResponse(c *gin.Context, resp *http.Response, startTime time.Time, originalModel string, accountID int64) (*antigravityStreamResult, error) {
 	c.Header("Content-Type", "text/event-stream")
 	c.Header("Cache-Control", "no-cache")
 	c.Header("Connection", "keep-alive")
@@ -3780,6 +3786,8 @@ func (s *AntigravityGatewayService) handleClaudeStreamingResponse(c *gin.Context
 	}
 
 	processor := antigravity.NewStreamingProcessor(originalModel)
+	setupClaudeMaxStreamingHook(c, processor, originalModel, accountID)
+
 	var firstTokenMs *int
 	// 使用 Scanner 并限制单行大小，避免 ReadString 无上限导致 OOM
 	scanner := bufio.NewScanner(resp.Body)

backend/internal/service/antigravity_gateway_service_test.go

@@ -922,7 +922,7 @@ func TestHandleClaudeStreamingResponse_NormalComplete(t *testing.T) {
 		fmt.Fprintln(pw, "")
 	}()
 
-	result, err := svc.handleClaudeStreamingResponse(c, resp, time.Now(), "claude-sonnet-4-5")
+	result, err := svc.handleClaudeStreamingResponse(c, resp, time.Now(), "claude-sonnet-4-5", 0)
 	_ = pr.Close()
 
 	require.NoError(t, err)
@@ -999,7 +999,7 @@ func TestHandleClaudeStreamingResponse_ThoughtsTokenCount(t *testing.T) {
 		fmt.Fprintln(pw, "")
 	}()
 
-	result, err := svc.handleClaudeStreamingResponse(c, resp, time.Now(), "gemini-2.5-pro")
+	result, err := svc.handleClaudeStreamingResponse(c, resp, time.Now(), "gemini-2.5-pro", 0)
 	_ = pr.Close()
 
 	require.NoError(t, err)
@@ -1202,7 +1202,7 @@ func TestHandleClaudeStreamingResponse_ClientDisconnect(t *testing.T) {
 		fmt.Fprintln(pw, "")
 	}()
 
-	result, err := svc.handleClaudeStreamingResponse(c, resp, time.Now(), "claude-sonnet-4-5")
+	result, err := svc.handleClaudeStreamingResponse(c, resp, time.Now(), "claude-sonnet-4-5", 0)
 	_ = pr.Close()
 
 	require.NoError(t, err)
@@ -1234,7 +1234,7 @@ func TestHandleClaudeStreamingResponse_EmptyStream(t *testing.T) {
 		fmt.Fprintln(pw, "")
 	}()
 
-	_, err := svc.handleClaudeStreamingResponse(c, resp, time.Now(), "claude-sonnet-4-5")
+	_, err := svc.handleClaudeStreamingResponse(c, resp, time.Now(), "claude-sonnet-4-5", 0)
 	_ = pr.Close()
 
 	// 应当返回 UpstreamFailoverError 而非 nil，以便上层触发 failover
@@ -1266,7 +1266,7 @@ func TestHandleClaudeStreamingResponse_ContextCanceled(t *testing.T) {
 
 	resp := &http.Response{StatusCode: http.StatusOK, Body: cancelReadCloser{}, Header: http.Header{}}
 
-	result, err := svc.handleClaudeStreamingResponse(c, resp, time.Now(), "claude-sonnet-4-5")
+	result, err := svc.handleClaudeStreamingResponse(c, resp, time.Now(), "claude-sonnet-4-5", 0)
 
 	require.NoError(t, err)
 	require.NotNil(t, result)

backend/internal/service/api_key_auth_cache.go

@@ -59,9 +59,10 @@ type APIKeyAuthGroupSnapshot struct {
 
 	// Model routing is used by gateway account selection, so it must be part of auth cache snapshot.
 	// Only anthropic groups use these fields; others may leave them empty.
-	ModelRouting        map[string][]int64 `json:"model_routing,omitempty"`
-	ModelRoutingEnabled bool               `json:"model_routing_enabled"`
-	MCPXMLInject        bool               `json:"mcp_xml_inject"`
+	ModelRouting             map[string][]int64 `json:"model_routing,omitempty"`
+	ModelRoutingEnabled      bool               `json:"model_routing_enabled"`
+	MCPXMLInject             bool               `json:"mcp_xml_inject"`
+	SimulateClaudeMaxEnabled bool               `json:"simulate_claude_max_enabled"`
 
 	// 支持的模型系列（仅 antigravity 平台使用）
 	SupportedModelScopes []string `json:"supported_model_scopes,omitempty"`

backend/internal/service/api_key_auth_cache_impl.go

@@ -244,6 +244,7 @@ func (s *APIKeyService) snapshotFromAPIKey(apiKey *APIKey) *APIKeyAuthSnapshot {
 			ModelRouting:                    apiKey.Group.ModelRouting,
 			ModelRoutingEnabled:             apiKey.Group.ModelRoutingEnabled,
 			MCPXMLInject:                    apiKey.Group.MCPXMLInject,
+			SimulateClaudeMaxEnabled:        apiKey.Group.SimulateClaudeMaxEnabled,
 			SupportedModelScopes:            apiKey.Group.SupportedModelScopes,
 			AllowMessagesDispatch:           apiKey.Group.AllowMessagesDispatch,
 			DefaultMappedModel:              apiKey.Group.DefaultMappedModel,
@@ -303,6 +304,7 @@ func (s *APIKeyService) snapshotToAPIKey(key string, snapshot *APIKeyAuthSnapsho
 			ModelRouting:                    snapshot.Group.ModelRouting,
 			ModelRoutingEnabled:             snapshot.Group.ModelRoutingEnabled,
 			MCPXMLInject:                    snapshot.Group.MCPXMLInject,
+			SimulateClaudeMaxEnabled:        snapshot.Group.SimulateClaudeMaxEnabled,
 			SupportedModelScopes:            snapshot.Group.SupportedModelScopes,
 			AllowMessagesDispatch:           snapshot.Group.AllowMessagesDispatch,
 			DefaultMappedModel:              snapshot.Group.DefaultMappedModel,

backend/internal/service/bedrock_request.go

@@ -1,607 +0,0 @@
-package service
-
-import (
-	"encoding/json"
-	"fmt"
-	"net/url"
-	"regexp"
-	"strconv"
-	"strings"
-
-	"github.com/Wei-Shaw/sub2api/internal/domain"
-	"github.com/tidwall/gjson"
-	"github.com/tidwall/sjson"
-)
-
-const defaultBedrockRegion = "us-east-1"
-
-var bedrockCrossRegionPrefixes = []string{"us.", "eu.", "apac.", "jp.", "au.", "us-gov.", "global."}
-
-// BedrockCrossRegionPrefix 根据 AWS Region 返回 Bedrock 跨区域推理的模型 ID 前缀
-// 参考: https://docs.aws.amazon.com/bedrock/latest/userguide/inference-profiles-support.html
-func BedrockCrossRegionPrefix(region string) string {
-	switch {
-	case strings.HasPrefix(region, "us-gov"):
-		return "us-gov" // GovCloud 使用独立的 us-gov 前缀
-	case strings.HasPrefix(region, "us-"):
-		return "us"
-	case strings.HasPrefix(region, "eu-"):
-		return "eu"
-	case region == "ap-northeast-1":
-		return "jp" // 日本区域使用独立的 jp 前缀（AWS 官方定义）
-	case region == "ap-southeast-2":
-		return "au" // 澳大利亚区域使用独立的 au 前缀（AWS 官方定义）
-	case strings.HasPrefix(region, "ap-"):
-		return "apac" // 其余亚太区域使用通用 apac 前缀
-	case strings.HasPrefix(region, "ca-"):
-		return "us" // 加拿大区域使用 us 前缀的跨区域推理
-	case strings.HasPrefix(region, "sa-"):
-		return "us" // 南美区域使用 us 前缀的跨区域推理
-	default:
-		return "us"
-	}
-}
-
-// AdjustBedrockModelRegionPrefix 将模型 ID 的区域前缀替换为与当前 AWS Region 匹配的前缀
-// 例如 region=eu-west-1 时，"us.anthropic.claude-opus-4-6-v1" → "eu.anthropic.claude-opus-4-6-v1"
-// 特殊值 region="global" 强制使用 global. 前缀
-func AdjustBedrockModelRegionPrefix(modelID, region string) string {
-	var targetPrefix string
-	if region == "global" {
-		targetPrefix = "global"
-	} else {
-		targetPrefix = BedrockCrossRegionPrefix(region)
-	}
-
-	for _, p := range bedrockCrossRegionPrefixes {
-		if strings.HasPrefix(modelID, p) {
-			if p == targetPrefix+"." {
-				return modelID // 前缀已匹配，无需替换
-			}
-			return targetPrefix + "." + modelID[len(p):]
-		}
-	}
-
-	// 模型 ID 没有已知区域前缀（如 "anthropic.claude-..."），不做修改
-	return modelID
-}
-
-func bedrockRuntimeRegion(account *Account) string {
-	if account == nil {
-		return defaultBedrockRegion
-	}
-	if region := account.GetCredential("aws_region"); region != "" {
-		return region
-	}
-	return defaultBedrockRegion
-}
-
-func shouldForceBedrockGlobal(account *Account) bool {
-	return account != nil && account.GetCredential("aws_force_global") == "true"
-}
-
-func isRegionalBedrockModelID(modelID string) bool {
-	for _, prefix := range bedrockCrossRegionPrefixes {
-		if strings.HasPrefix(modelID, prefix) {
-			return true
-		}
-	}
-	return false
-}
-
-func isLikelyBedrockModelID(modelID string) bool {
-	lower := strings.ToLower(strings.TrimSpace(modelID))
-	if lower == "" {
-		return false
-	}
-	if strings.HasPrefix(lower, "arn:") {
-		return true
-	}
-	for _, prefix := range []string{
-		"anthropic.",
-		"amazon.",
-		"meta.",
-		"mistral.",
-		"cohere.",
-		"ai21.",
-		"deepseek.",
-		"stability.",
-		"writer.",
-		"nova.",
-	} {
-		if strings.HasPrefix(lower, prefix) {
-			return true
-		}
-	}
-	return isRegionalBedrockModelID(lower)
-}
-
-func normalizeBedrockModelID(modelID string) (normalized string, shouldAdjustRegion bool, ok bool) {
-	modelID = strings.TrimSpace(modelID)
-	if modelID == "" {
-		return "", false, false
-	}
-	if mapped, exists := domain.DefaultBedrockModelMapping[modelID]; exists {
-		return mapped, true, true
-	}
-	if isRegionalBedrockModelID(modelID) {
-		return modelID, true, true
-	}
-	if isLikelyBedrockModelID(modelID) {
-		return modelID, false, true
-	}
-	return "", false, false
-}
-
-// ResolveBedrockModelID resolves a requested Claude model into a Bedrock model ID.
-// It applies account model_mapping first, then default Bedrock aliases, and finally
-// adjusts Anthropic cross-region prefixes to match the account region.
-func ResolveBedrockModelID(account *Account, requestedModel string) (string, bool) {
-	if account == nil {
-		return "", false
-	}
-
-	mappedModel := account.GetMappedModel(requestedModel)
-	modelID, shouldAdjustRegion, ok := normalizeBedrockModelID(mappedModel)
-	if !ok {
-		return "", false
-	}
-	if shouldAdjustRegion {
-		targetRegion := bedrockRuntimeRegion(account)
-		if shouldForceBedrockGlobal(account) {
-			targetRegion = "global"
-		}
-		modelID = AdjustBedrockModelRegionPrefix(modelID, targetRegion)
-	}
-	return modelID, true
-}
-
-// BuildBedrockURL 构建 Bedrock InvokeModel 的 URL
-// stream=true 时使用 invoke-with-response-stream 端点
-// modelID 中的特殊字符会被 URL 编码（与 litellm 的 urllib.parse.quote(safe="") 对齐）
-func BuildBedrockURL(region, modelID string, stream bool) string {
-	if region == "" {
-		region = defaultBedrockRegion
-	}
-	encodedModelID := url.PathEscape(modelID)
-	// url.PathEscape 不编码冒号（RFC 允许 path 中出现 ":"），
-	// 但 AWS Bedrock 期望模型 ID 中的冒号被编码为 %3A
-	encodedModelID = strings.ReplaceAll(encodedModelID, ":", "%3A")
-	if stream {
-		return fmt.Sprintf("https://bedrock-runtime.%s.amazonaws.com/model/%s/invoke-with-response-stream", region, encodedModelID)
-	}
-	return fmt.Sprintf("https://bedrock-runtime.%s.amazonaws.com/model/%s/invoke", region, encodedModelID)
-}
-
-// PrepareBedrockRequestBody 处理请求体以适配 Bedrock API
-//  1. 注入 anthropic_version
-//  2. 注入 anthropic_beta（从客户端 anthropic-beta 头解析）
-//  3. 移除 Bedrock 不支持的字段（model, stream, output_format, output_config）
-//  4. 移除工具定义中的 custom 字段（Claude Code 会发送 custom: {defer_loading: true}）
-//  5. 清理 cache_control 中 Bedrock 不支持的字段（scope, ttl）
-func PrepareBedrockRequestBody(body []byte, modelID string, betaHeader string) ([]byte, error) {
-	betaTokens := ResolveBedrockBetaTokens(betaHeader, body, modelID)
-	return PrepareBedrockRequestBodyWithTokens(body, modelID, betaTokens)
-}
-
-// PrepareBedrockRequestBodyWithTokens prepares a Bedrock request using pre-resolved beta tokens.
-func PrepareBedrockRequestBodyWithTokens(body []byte, modelID string, betaTokens []string) ([]byte, error) {
-	var err error
-
-	// 注入 anthropic_version（Bedrock 要求）
-	body, err = sjson.SetBytes(body, "anthropic_version", "bedrock-2023-05-31")
-	if err != nil {
-		return nil, fmt.Errorf("inject anthropic_version: %w", err)
-	}
-
-	// 注入 anthropic_beta（Bedrock Invoke 通过请求体传递 beta 头，而非 HTTP 头）
-	// 1. 从客户端 anthropic-beta header 解析
-	// 2. 根据请求体内容自动补齐必要的 beta token
-	//    参考 litellm: AnthropicModelInfo.get_anthropic_beta_list() + _get_tool_search_beta_header_for_bedrock()
-	if len(betaTokens) > 0 {
-		body, err = sjson.SetBytes(body, "anthropic_beta", betaTokens)
-		if err != nil {
-			return nil, fmt.Errorf("inject anthropic_beta: %w", err)
-		}
-	}
-
-	// 移除 model 字段（Bedrock 通过 URL 指定模型）
-	body, err = sjson.DeleteBytes(body, "model")
-	if err != nil {
-		return nil, fmt.Errorf("remove model field: %w", err)
-	}
-
-	// 移除 stream 字段（Bedrock 通过不同端点控制流式，不接受请求体中的 stream 字段）
-	body, err = sjson.DeleteBytes(body, "stream")
-	if err != nil {
-		return nil, fmt.Errorf("remove stream field: %w", err)
-	}
-
-	// 转换 output_format（Bedrock Invoke 不支持此字段，但可将 schema 内联到最后一条 user message）
-	// 参考 litellm: _convert_output_format_to_inline_schema()
-	body = convertOutputFormatToInlineSchema(body)
-
-	// 移除 output_config 字段（Bedrock Invoke 不支持）
-	body, err = sjson.DeleteBytes(body, "output_config")
-	if err != nil {
-		return nil, fmt.Errorf("remove output_config field: %w", err)
-	}
-
-	// 移除工具定义中的 custom 字段
-	// Claude Code (v2.1.69+) 在 tool 定义中发送 custom: {defer_loading: true}，
-	// Anthropic API 接受但 Bedrock 会拒绝并报 "Extra inputs are not permitted"
-	body = removeCustomFieldFromTools(body)
-
-	// 清理 cache_control 中 Bedrock 不支持的字段
-	body = sanitizeBedrockCacheControl(body, modelID)
-
-	return body, nil
-}
-
-// ResolveBedrockBetaTokens computes the final Bedrock beta token list before policy filtering.
-func ResolveBedrockBetaTokens(betaHeader string, body []byte, modelID string) []string {
-	betaTokens := parseAnthropicBetaHeader(betaHeader)
-	betaTokens = autoInjectBedrockBetaTokens(betaTokens, body, modelID)
-	return filterBedrockBetaTokens(betaTokens)
-}
-
-// convertOutputFormatToInlineSchema 将 output_format 中的 JSON schema 内联到最后一条 user message
-// Bedrock Invoke 不支持 output_format 参数，litellm 的做法是将 schema 追加到用户消息中
-// 参考: litellm AmazonAnthropicClaudeMessagesConfig._convert_output_format_to_inline_schema()
-func convertOutputFormatToInlineSchema(body []byte) []byte {
-	outputFormat := gjson.GetBytes(body, "output_format")
-	if !outputFormat.Exists() || !outputFormat.IsObject() {
-		return body
-	}
-
-	// 先从请求体中移除 output_format
-	body, _ = sjson.DeleteBytes(body, "output_format")
-
-	schema := outputFormat.Get("schema")
-	if !schema.Exists() {
-		return body
-	}
-
-	// 找到最后一条 user message
-	messages := gjson.GetBytes(body, "messages")
-	if !messages.Exists() || !messages.IsArray() {
-		return body
-	}
-	msgArr := messages.Array()
-	lastUserIdx := -1
-	for i := len(msgArr) - 1; i >= 0; i-- {
-		if msgArr[i].Get("role").String() == "user" {
-			lastUserIdx = i
-			break
-		}
-	}
-	if lastUserIdx < 0 {
-		return body
-	}
-
-	// 将 schema 序列化为 JSON 文本追加到该 message 的 content 数组
-	schemaJSON, err := json.Marshal(json.RawMessage(schema.Raw))
-	if err != nil {
-		return body
-	}
-
-	content := msgArr[lastUserIdx].Get("content")
-	basePath := fmt.Sprintf("messages.%d.content", lastUserIdx)
-
-	if content.IsArray() {
-		// 追加一个 text block 到 content 数组末尾
-		idx := len(content.Array())
-		body, _ = sjson.SetBytes(body, fmt.Sprintf("%s.%d.type", basePath, idx), "text")
-		body, _ = sjson.SetBytes(body, fmt.Sprintf("%s.%d.text", basePath, idx), string(schemaJSON))
-	} else if content.Type == gjson.String {
-		// content 是纯字符串，转换为数组格式
-		originalText := content.String()
-		body, _ = sjson.SetBytes(body, basePath, []map[string]string{
-			{"type": "text", "text": originalText},
-			{"type": "text", "text": string(schemaJSON)},
-		})
-	}
-
-	return body
-}
-
-// removeCustomFieldFromTools 移除 tools 数组中每个工具定义的 custom 字段
-func removeCustomFieldFromTools(body []byte) []byte {
-	tools := gjson.GetBytes(body, "tools")
-	if !tools.Exists() || !tools.IsArray() {
-		return body
-	}
-	var err error
-	for i := range tools.Array() {
-		body, err = sjson.DeleteBytes(body, fmt.Sprintf("tools.%d.custom", i))
-		if err != nil {
-			// 删除失败不影响整体流程，跳过
-			continue
-		}
-	}
-	return body
-}
-
-// claudeVersionRe 匹配 Claude 模型 ID 中的版本号部分
-// 支持 claude-{tier}-{major}-{minor} 和 claude-{tier}-{major}.{minor} 格式
-var claudeVersionRe = regexp.MustCompile(`claude-(?:haiku|sonnet|opus)-(\d+)[-.](\d+)`)
-
-// isBedrockClaude45OrNewer 判断 Bedrock 模型 ID 是否为 Claude 4.5 或更新版本
-// Claude 4.5+ 支持 cache_control 中的 ttl 字段（"5m" 和 "1h"）
-func isBedrockClaude45OrNewer(modelID string) bool {
-	lower := strings.ToLower(modelID)
-	matches := claudeVersionRe.FindStringSubmatch(lower)
-	if matches == nil {
-		return false
-	}
-	major, _ := strconv.Atoi(matches[1])
-	minor, _ := strconv.Atoi(matches[2])
-	return major > 4 || (major == 4 && minor >= 5)
-}
-
-// sanitizeBedrockCacheControl 清理 system 和 messages 中 cache_control 里
-// Bedrock 不支持的字段：
-//   - scope：Bedrock 不支持（如 "global" 跨请求缓存）
-//   - ttl：仅 Claude 4.5+ 支持 "5m" 和 "1h"，旧模型需要移除
-func sanitizeBedrockCacheControl(body []byte, modelID string) []byte {
-	isClaude45 := isBedrockClaude45OrNewer(modelID)
-
-	// 清理 system 数组中的 cache_control
-	systemArr := gjson.GetBytes(body, "system")
-	if systemArr.Exists() && systemArr.IsArray() {
-		for i, item := range systemArr.Array() {
-			if !item.IsObject() {
-				continue
-			}
-			cc := item.Get("cache_control")
-			if !cc.Exists() || !cc.IsObject() {
-				continue
-			}
-			body = deleteCacheControlUnsupportedFields(body, fmt.Sprintf("system.%d.cache_control", i), cc, isClaude45)
-		}
-	}
-
-	// 清理 messages 中的 cache_control
-	messages := gjson.GetBytes(body, "messages")
-	if !messages.Exists() || !messages.IsArray() {
-		return body
-	}
-	for mi, msg := range messages.Array() {
-		if !msg.IsObject() {
-			continue
-		}
-		content := msg.Get("content")
-		if !content.Exists() || !content.IsArray() {
-			continue
-		}
-		for ci, block := range content.Array() {
-			if !block.IsObject() {
-				continue
-			}
-			cc := block.Get("cache_control")
-			if !cc.Exists() || !cc.IsObject() {
-				continue
-			}
-			body = deleteCacheControlUnsupportedFields(body, fmt.Sprintf("messages.%d.content.%d.cache_control", mi, ci), cc, isClaude45)
-		}
-	}
-
-	return body
-}
-
-// deleteCacheControlUnsupportedFields 删除给定 cache_control 路径下 Bedrock 不支持的字段
-func deleteCacheControlUnsupportedFields(body []byte, basePath string, cc gjson.Result, isClaude45 bool) []byte {
-	// Bedrock 不支持 scope（如 "global"）
-	if cc.Get("scope").Exists() {
-		body, _ = sjson.DeleteBytes(body, basePath+".scope")
-	}
-
-	// ttl：仅 Claude 4.5+ 支持 "5m" 和 "1h"，其余情况移除
-	ttl := cc.Get("ttl")
-	if ttl.Exists() {
-		shouldRemove := true
-		if isClaude45 {
-			v := ttl.String()
-			if v == "5m" || v == "1h" {
-				shouldRemove = false
-			}
-		}
-		if shouldRemove {
-			body, _ = sjson.DeleteBytes(body, basePath+".ttl")
-		}
-	}
-
-	return body
-}
-
-// parseAnthropicBetaHeader 解析 anthropic-beta 头的逗号分隔字符串为 token 列表
-func parseAnthropicBetaHeader(header string) []string {
-	header = strings.TrimSpace(header)
-	if header == "" {
-		return nil
-	}
-	if strings.HasPrefix(header, "[") && strings.HasSuffix(header, "]") {
-		var parsed []any
-		if err := json.Unmarshal([]byte(header), &parsed); err == nil {
-			tokens := make([]string, 0, len(parsed))
-			for _, item := range parsed {
-				token := strings.TrimSpace(fmt.Sprint(item))
-				if token != "" {
-					tokens = append(tokens, token)
-				}
-			}
-			return tokens
-		}
-	}
-	var tokens []string
-	for _, part := range strings.Split(header, ",") {
-		t := strings.TrimSpace(part)
-		if t != "" {
-			tokens = append(tokens, t)
-		}
-	}
-	return tokens
-}
-
-// bedrockSupportedBetaTokens 是 Bedrock Invoke 支持的 beta 头白名单
-// 参考: litellm/litellm/llms/bedrock/common_utils.py (anthropic_beta_headers_config.json)
-// 更新策略: 当 AWS Bedrock 新增支持的 beta token 时需同步更新此白名单
-var bedrockSupportedBetaTokens = map[string]bool{
-	"computer-use-2025-01-24":         true,
-	"computer-use-2025-11-24":         true,
-	"context-1m-2025-08-07":           true,
-	"context-management-2025-06-27":   true,
-	"compact-2026-01-12":              true,
-	"interleaved-thinking-2025-05-14": true,
-	"tool-search-tool-2025-10-19":     true,
-	"tool-examples-2025-10-29":        true,
-}
-
-// bedrockBetaTokenTransforms 定义 Bedrock Invoke 特有的 beta 头转换规则
-// Anthropic 直接 API 使用通用头，Bedrock Invoke 需要特定的替代头
-var bedrockBetaTokenTransforms = map[string]string{
-	"advanced-tool-use-2025-11-20": "tool-search-tool-2025-10-19",
-}
-
-// autoInjectBedrockBetaTokens 根据请求体内容自动补齐必要的 beta token
-// 参考 litellm: AnthropicModelInfo.get_anthropic_beta_list() 和
-// AmazonAnthropicClaudeMessagesConfig._get_tool_search_beta_header_for_bedrock()
-//
-// 客户端（特别是非 Claude Code 客户端）可能只在 body 中启用了功能而不在 header 中带对应 beta token，
-// 这里通过检测请求体特征自动补齐，确保 Bedrock Invoke 不会因缺少必要 beta 头而 400。
-func autoInjectBedrockBetaTokens(tokens []string, body []byte, modelID string) []string {
-	seen := make(map[string]bool, len(tokens))
-	for _, t := range tokens {
-		seen[t] = true
-	}
-
-	inject := func(token string) {
-		if !seen[token] {
-			tokens = append(tokens, token)
-			seen[token] = true
-		}
-	}
-
-	// 检测 thinking / interleaved thinking
-	// 请求体中有 "thinking" 字段 → 需要 interleaved-thinking beta
-	if gjson.GetBytes(body, "thinking").Exists() {
-		inject("interleaved-thinking-2025-05-14")
-	}
-
-	// 检测 computer_use 工具
-	// tools 中有 type="computer_20xxxxxx" 的工具 → 需要 computer-use beta
-	tools := gjson.GetBytes(body, "tools")
-	if tools.Exists() && tools.IsArray() {
-		toolSearchUsed := false
-		programmaticToolCallingUsed := false
-		inputExamplesUsed := false
-		for _, tool := range tools.Array() {
-			toolType := tool.Get("type").String()
-			if strings.HasPrefix(toolType, "computer_20") {
-				inject("computer-use-2025-11-24")
-			}
-			if isBedrockToolSearchType(toolType) {
-				toolSearchUsed = true
-			}
-			if hasCodeExecutionAllowedCallers(tool) {
-				programmaticToolCallingUsed = true
-			}
-			if hasInputExamples(tool) {
-				inputExamplesUsed = true
-			}
-		}
-		if programmaticToolCallingUsed || inputExamplesUsed {
-			// programmatic tool calling 和 input examples 需要 advanced-tool-use，
-			// 后续 filterBedrockBetaTokens 会将其转换为 Bedrock 特定的 tool-search-tool
-			inject("advanced-tool-use-2025-11-20")
-		}
-		if toolSearchUsed && bedrockModelSupportsToolSearch(modelID) {
-			// 纯 tool search（无 programmatic/inputExamples）时直接注入 Bedrock 特定头，
-			// 跳过 advanced-tool-use → tool-search-tool 的转换步骤（与 litellm 对齐）
-			if !programmaticToolCallingUsed && !inputExamplesUsed {
-				inject("tool-search-tool-2025-10-19")
-			} else {
-				inject("advanced-tool-use-2025-11-20")
-			}
-		}
-	}
-
-	return tokens
-}
-
-func isBedrockToolSearchType(toolType string) bool {
-	return toolType == "tool_search_tool_regex_20251119" || toolType == "tool_search_tool_bm25_20251119"
-}
-
-func hasCodeExecutionAllowedCallers(tool gjson.Result) bool {
-	allowedCallers := tool.Get("allowed_callers")
-	if containsStringInJSONArray(allowedCallers, "code_execution_20250825") {
-		return true
-	}
-	return containsStringInJSONArray(tool.Get("function.allowed_callers"), "code_execution_20250825")
-}
-
-func hasInputExamples(tool gjson.Result) bool {
-	if arr := tool.Get("input_examples"); arr.Exists() && arr.IsArray() && len(arr.Array()) > 0 {
-		return true
-	}
-	arr := tool.Get("function.input_examples")
-	return arr.Exists() && arr.IsArray() && len(arr.Array()) > 0
-}
-
-func containsStringInJSONArray(result gjson.Result, target string) bool {
-	if !result.Exists() || !result.IsArray() {
-		return false
-	}
-	for _, item := range result.Array() {
-		if item.String() == target {
-			return true
-		}
-	}
-	return false
-}
-
-// bedrockModelSupportsToolSearch 判断 Bedrock 模型是否支持 tool search
-// 目前仅 Claude Opus/Sonnet 4.5+ 支持，Haiku 不支持
-func bedrockModelSupportsToolSearch(modelID string) bool {
-	lower := strings.ToLower(modelID)
-	matches := claudeVersionRe.FindStringSubmatch(lower)
-	if matches == nil {
-		return false
-	}
-	// Haiku 不支持 tool search
-	if strings.Contains(lower, "haiku") {
-		return false
-	}
-	major, _ := strconv.Atoi(matches[1])
-	minor, _ := strconv.Atoi(matches[2])
-	return major > 4 || (major == 4 && minor >= 5)
-}
-
-// filterBedrockBetaTokens 过滤并转换 beta token 列表，仅保留 Bedrock Invoke 支持的 token
-// 1. 应用转换规则（如 advanced-tool-use → tool-search-tool）
-// 2. 过滤掉 Bedrock 不支持的 token（如 output-128k, files-api, structured-outputs 等）
-// 3. 自动关联 tool-examples（当 tool-search-tool 存在时）
-func filterBedrockBetaTokens(tokens []string) []string {
-	seen := make(map[string]bool, len(tokens))
-	var result []string
-
-	for _, t := range tokens {
-		// 应用转换规则
-		if replacement, ok := bedrockBetaTokenTransforms[t]; ok {
-			t = replacement
-		}
-		// 只保留白名单中的 token，且去重
-		if bedrockSupportedBetaTokens[t] && !seen[t] {
-			result = append(result, t)
-			seen[t] = true
-		}
-	}
-
-	// 自动关联: tool-search-tool 存在时，确保 tool-examples 也存在
-	if seen["tool-search-tool-2025-10-19"] && !seen["tool-examples-2025-10-29"] {
-		result = append(result, "tool-examples-2025-10-29")
-	}
-
-	return result
-}

backend/internal/service/bedrock_request_test.go

@@ -1,659 +0,0 @@
-package service
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"github.com/tidwall/gjson"
-)
-
-func TestPrepareBedrockRequestBody_BasicFields(t *testing.T) {
-	input := `{"model":"claude-opus-4-6","stream":true,"max_tokens":1024,"messages":[{"role":"user","content":"hi"}]}`
-	result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-opus-4-6-v1", "")
-	require.NoError(t, err)
-
-	// anthropic_version 应被注入
-	assert.Equal(t, "bedrock-2023-05-31", gjson.GetBytes(result, "anthropic_version").String())
-	// model 和 stream 应被移除
-	assert.False(t, gjson.GetBytes(result, "model").Exists())
-	assert.False(t, gjson.GetBytes(result, "stream").Exists())
-	// max_tokens 应保留
-	assert.Equal(t, int64(1024), gjson.GetBytes(result, "max_tokens").Int())
-}
-
-func TestPrepareBedrockRequestBody_OutputFormatInlineSchema(t *testing.T) {
-	t.Run("schema inlined into last user message array content", func(t *testing.T) {
-		input := `{"model":"claude-sonnet-4-5","output_format":{"type":"json","schema":{"name":"string"}},"messages":[{"role":"user","content":[{"type":"text","text":"hello"}]}]}`
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-sonnet-4-5-v1", "")
-		require.NoError(t, err)
-
-		assert.False(t, gjson.GetBytes(result, "output_format").Exists())
-		// schema 应内联到最后一条 user message 的 content 数组末尾
-		contentArr := gjson.GetBytes(result, "messages.0.content").Array()
-		require.Len(t, contentArr, 2)
-		assert.Equal(t, "text", contentArr[1].Get("type").String())
-		assert.Contains(t, contentArr[1].Get("text").String(), `"name":"string"`)
-	})
-
-	t.Run("schema inlined into string content", func(t *testing.T) {
-		input := `{"model":"claude-sonnet-4-5","output_format":{"type":"json","schema":{"result":"number"}},"messages":[{"role":"user","content":"compute this"}]}`
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-sonnet-4-5-v1", "")
-		require.NoError(t, err)
-
-		assert.False(t, gjson.GetBytes(result, "output_format").Exists())
-		contentArr := gjson.GetBytes(result, "messages.0.content").Array()
-		require.Len(t, contentArr, 2)
-		assert.Equal(t, "compute this", contentArr[0].Get("text").String())
-		assert.Contains(t, contentArr[1].Get("text").String(), `"result":"number"`)
-	})
-
-	t.Run("no schema field just removes output_format", func(t *testing.T) {
-		input := `{"model":"claude-sonnet-4-5","output_format":{"type":"json"},"messages":[{"role":"user","content":"hi"}]}`
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-sonnet-4-5-v1", "")
-		require.NoError(t, err)
-
-		assert.False(t, gjson.GetBytes(result, "output_format").Exists())
-	})
-
-	t.Run("no messages just removes output_format", func(t *testing.T) {
-		input := `{"model":"claude-sonnet-4-5","output_format":{"type":"json","schema":{"name":"string"}}}`
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-sonnet-4-5-v1", "")
-		require.NoError(t, err)
-
-		assert.False(t, gjson.GetBytes(result, "output_format").Exists())
-	})
-}
-
-func TestPrepareBedrockRequestBody_RemoveOutputConfig(t *testing.T) {
-	input := `{"model":"claude-sonnet-4-5","output_config":{"max_tokens":100},"messages":[]}`
-	result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-sonnet-4-5-v1", "")
-	require.NoError(t, err)
-
-	assert.False(t, gjson.GetBytes(result, "output_config").Exists())
-}
-
-func TestRemoveCustomFieldFromTools(t *testing.T) {
-	input := `{
-		"tools": [
-			{"name":"tool1","custom":{"defer_loading":true},"description":"desc1"},
-			{"name":"tool2","description":"desc2"},
-			{"name":"tool3","custom":{"defer_loading":true,"other":123},"description":"desc3"}
-		]
-	}`
-	result := removeCustomFieldFromTools([]byte(input))
-
-	tools := gjson.GetBytes(result, "tools").Array()
-	require.Len(t, tools, 3)
-	// custom 应被移除
-	assert.False(t, tools[0].Get("custom").Exists())
-	// name/description 应保留
-	assert.Equal(t, "tool1", tools[0].Get("name").String())
-	assert.Equal(t, "desc1", tools[0].Get("description").String())
-	// 没有 custom 的工具不受影响
-	assert.Equal(t, "tool2", tools[1].Get("name").String())
-	// 第三个工具的 custom 也应被移除
-	assert.False(t, tools[2].Get("custom").Exists())
-	assert.Equal(t, "tool3", tools[2].Get("name").String())
-}
-
-func TestRemoveCustomFieldFromTools_NoTools(t *testing.T) {
-	input := `{"messages":[{"role":"user","content":"hi"}]}`
-	result := removeCustomFieldFromTools([]byte(input))
-	// 无 tools 时不改变原始数据
-	assert.JSONEq(t, input, string(result))
-}
-
-func TestSanitizeBedrockCacheControl_RemoveScope(t *testing.T) {
-	input := `{
-		"system": [{"type":"text","text":"sys","cache_control":{"type":"ephemeral","scope":"global"}}],
-		"messages": [{"role":"user","content":[{"type":"text","text":"hi","cache_control":{"type":"ephemeral","scope":"global"}}]}]
-	}`
-	result := sanitizeBedrockCacheControl([]byte(input), "us.anthropic.claude-opus-4-6-v1")
-
-	// scope 应被移除
-	assert.False(t, gjson.GetBytes(result, "system.0.cache_control.scope").Exists())
-	assert.False(t, gjson.GetBytes(result, "messages.0.content.0.cache_control.scope").Exists())
-	// type 应保留
-	assert.Equal(t, "ephemeral", gjson.GetBytes(result, "system.0.cache_control.type").String())
-	assert.Equal(t, "ephemeral", gjson.GetBytes(result, "messages.0.content.0.cache_control.type").String())
-}
-
-func TestSanitizeBedrockCacheControl_TTL_OldModel(t *testing.T) {
-	input := `{
-		"system": [{"type":"text","text":"sys","cache_control":{"type":"ephemeral","ttl":"5m"}}]
-	}`
-	// 旧模型（Claude 3.5）不支持 ttl
-	result := sanitizeBedrockCacheControl([]byte(input), "anthropic.claude-3-5-sonnet-20241022-v2:0")
-
-	assert.False(t, gjson.GetBytes(result, "system.0.cache_control.ttl").Exists())
-	assert.Equal(t, "ephemeral", gjson.GetBytes(result, "system.0.cache_control.type").String())
-}
-
-func TestSanitizeBedrockCacheControl_TTL_Claude45_Supported(t *testing.T) {
-	input := `{
-		"system": [{"type":"text","text":"sys","cache_control":{"type":"ephemeral","ttl":"5m"}}]
-	}`
-	// Claude 4.5+ 支持 "5m" 和 "1h"
-	result := sanitizeBedrockCacheControl([]byte(input), "us.anthropic.claude-sonnet-4-5-20250929-v1:0")
-
-	assert.True(t, gjson.GetBytes(result, "system.0.cache_control.ttl").Exists())
-	assert.Equal(t, "5m", gjson.GetBytes(result, "system.0.cache_control.ttl").String())
-}
-
-func TestSanitizeBedrockCacheControl_TTL_Claude45_UnsupportedValue(t *testing.T) {
-	input := `{
-		"system": [{"type":"text","text":"sys","cache_control":{"type":"ephemeral","ttl":"10m"}}]
-	}`
-	// Claude 4.5 不支持 "10m"
-	result := sanitizeBedrockCacheControl([]byte(input), "us.anthropic.claude-sonnet-4-5-20250929-v1:0")
-
-	assert.False(t, gjson.GetBytes(result, "system.0.cache_control.ttl").Exists())
-}
-
-func TestSanitizeBedrockCacheControl_TTL_Claude46(t *testing.T) {
-	input := `{
-		"messages": [{"role":"user","content":[{"type":"text","text":"hi","cache_control":{"type":"ephemeral","ttl":"1h"}}]}]
-	}`
-	result := sanitizeBedrockCacheControl([]byte(input), "us.anthropic.claude-opus-4-6-v1")
-
-	assert.True(t, gjson.GetBytes(result, "messages.0.content.0.cache_control.ttl").Exists())
-	assert.Equal(t, "1h", gjson.GetBytes(result, "messages.0.content.0.cache_control.ttl").String())
-}
-
-func TestSanitizeBedrockCacheControl_NoCacheControl(t *testing.T) {
-	input := `{"system":[{"type":"text","text":"sys"}],"messages":[{"role":"user","content":[{"type":"text","text":"hi"}]}]}`
-	result := sanitizeBedrockCacheControl([]byte(input), "us.anthropic.claude-opus-4-6-v1")
-	// 无 cache_control 时不改变原始数据
-	assert.JSONEq(t, input, string(result))
-}
-
-func TestIsBedrockClaude45OrNewer(t *testing.T) {
-	tests := []struct {
-		modelID string
-		expect  bool
-	}{
-		{"us.anthropic.claude-opus-4-6-v1", true},
-		{"us.anthropic.claude-sonnet-4-6", true},
-		{"us.anthropic.claude-sonnet-4-5-20250929-v1:0", true},
-		{"us.anthropic.claude-opus-4-5-20251101-v1:0", true},
-		{"us.anthropic.claude-haiku-4-5-20251001-v1:0", true},
-		{"anthropic.claude-3-5-sonnet-20241022-v2:0", false},
-		{"anthropic.claude-3-opus-20240229-v1:0", false},
-		{"anthropic.claude-3-haiku-20240307-v1:0", false},
-		// 未来版本应自动支持
-		{"us.anthropic.claude-sonnet-5-0-v1", true},
-		{"us.anthropic.claude-opus-4-7-v1", true},
-		// 旧版本
-		{"anthropic.claude-opus-4-1-v1", false},
-		{"anthropic.claude-sonnet-4-0-v1", false},
-		// 非 Claude 模型
-		{"amazon.nova-pro-v1", false},
-		{"meta.llama3-70b", false},
-	}
-	for _, tt := range tests {
-		t.Run(tt.modelID, func(t *testing.T) {
-			assert.Equal(t, tt.expect, isBedrockClaude45OrNewer(tt.modelID))
-		})
-	}
-}
-
-func TestPrepareBedrockRequestBody_FullIntegration(t *testing.T) {
-	// 模拟一个完整的 Claude Code 请求
-	input := `{
-		"model": "claude-opus-4-6",
-		"stream": true,
-		"max_tokens": 16384,
-		"output_format": {"type": "json", "schema": {"result": "string"}},
-		"output_config": {"max_tokens": 100},
-		"system": [{"type": "text", "text": "You are helpful", "cache_control": {"type": "ephemeral", "scope": "global", "ttl": "5m"}}],
-		"messages": [
-			{"role": "user", "content": [{"type": "text", "text": "hello", "cache_control": {"type": "ephemeral", "ttl": "1h"}}]}
-		],
-		"tools": [
-			{"name": "bash", "description": "Run bash", "custom": {"defer_loading": true}, "input_schema": {"type": "object"}},
-			{"name": "read", "description": "Read file", "input_schema": {"type": "object"}}
-		]
-	}`
-
-	betaHeader := "interleaved-thinking-2025-05-14, context-1m-2025-08-07, compact-2026-01-12"
-	result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-opus-4-6-v1", betaHeader)
-	require.NoError(t, err)
-
-	// 基本字段
-	assert.Equal(t, "bedrock-2023-05-31", gjson.GetBytes(result, "anthropic_version").String())
-	assert.False(t, gjson.GetBytes(result, "model").Exists())
-	assert.False(t, gjson.GetBytes(result, "stream").Exists())
-	assert.Equal(t, int64(16384), gjson.GetBytes(result, "max_tokens").Int())
-
-	// anthropic_beta 应包含所有 beta tokens
-	betaArr := gjson.GetBytes(result, "anthropic_beta").Array()
-	require.Len(t, betaArr, 3)
-	assert.Equal(t, "interleaved-thinking-2025-05-14", betaArr[0].String())
-	assert.Equal(t, "context-1m-2025-08-07", betaArr[1].String())
-	assert.Equal(t, "compact-2026-01-12", betaArr[2].String())
-
-	// output_format 应被移除，schema 内联到最后一条 user message
-	assert.False(t, gjson.GetBytes(result, "output_format").Exists())
-	assert.False(t, gjson.GetBytes(result, "output_config").Exists())
-	// content 数组：原始 text block + 内联 schema block
-	contentArr := gjson.GetBytes(result, "messages.0.content").Array()
-	require.Len(t, contentArr, 2)
-	assert.Equal(t, "hello", contentArr[0].Get("text").String())
-	assert.Contains(t, contentArr[1].Get("text").String(), `"result":"string"`)
-
-	// tools 中的 custom 应被移除
-	assert.False(t, gjson.GetBytes(result, "tools.0.custom").Exists())
-	assert.Equal(t, "bash", gjson.GetBytes(result, "tools.0.name").String())
-	assert.Equal(t, "read", gjson.GetBytes(result, "tools.1.name").String())
-
-	// cache_control: scope 应被移除，ttl 在 Claude 4.6 上保留合法值
-	assert.False(t, gjson.GetBytes(result, "system.0.cache_control.scope").Exists())
-	assert.Equal(t, "ephemeral", gjson.GetBytes(result, "system.0.cache_control.type").String())
-	assert.Equal(t, "5m", gjson.GetBytes(result, "system.0.cache_control.ttl").String())
-	assert.Equal(t, "1h", gjson.GetBytes(result, "messages.0.content.0.cache_control.ttl").String())
-}
-
-func TestPrepareBedrockRequestBody_BetaHeader(t *testing.T) {
-	input := `{"messages":[{"role":"user","content":"hi"}],"max_tokens":100}`
-
-	t.Run("empty beta header", func(t *testing.T) {
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-opus-4-6-v1", "")
-		require.NoError(t, err)
-		assert.False(t, gjson.GetBytes(result, "anthropic_beta").Exists())
-	})
-
-	t.Run("single beta token", func(t *testing.T) {
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-opus-4-6-v1", "interleaved-thinking-2025-05-14")
-		require.NoError(t, err)
-		arr := gjson.GetBytes(result, "anthropic_beta").Array()
-		require.Len(t, arr, 1)
-		assert.Equal(t, "interleaved-thinking-2025-05-14", arr[0].String())
-	})
-
-	t.Run("multiple beta tokens with spaces", func(t *testing.T) {
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-opus-4-6-v1", "interleaved-thinking-2025-05-14 , context-1m-2025-08-07 ")
-		require.NoError(t, err)
-		arr := gjson.GetBytes(result, "anthropic_beta").Array()
-		require.Len(t, arr, 2)
-		assert.Equal(t, "interleaved-thinking-2025-05-14", arr[0].String())
-		assert.Equal(t, "context-1m-2025-08-07", arr[1].String())
-	})
-
-	t.Run("json array beta header", func(t *testing.T) {
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-opus-4-6-v1", `["interleaved-thinking-2025-05-14","context-1m-2025-08-07"]`)
-		require.NoError(t, err)
-		arr := gjson.GetBytes(result, "anthropic_beta").Array()
-		require.Len(t, arr, 2)
-		assert.Equal(t, "interleaved-thinking-2025-05-14", arr[0].String())
-		assert.Equal(t, "context-1m-2025-08-07", arr[1].String())
-	})
-}
-
-func TestParseAnthropicBetaHeader(t *testing.T) {
-	assert.Nil(t, parseAnthropicBetaHeader(""))
-	assert.Equal(t, []string{"a"}, parseAnthropicBetaHeader("a"))
-	assert.Equal(t, []string{"a", "b"}, parseAnthropicBetaHeader("a,b"))
-	assert.Equal(t, []string{"a", "b"}, parseAnthropicBetaHeader("a , b "))
-	assert.Equal(t, []string{"a", "b", "c"}, parseAnthropicBetaHeader("a,b,c"))
-	assert.Equal(t, []string{"a", "b"}, parseAnthropicBetaHeader(`["a","b"]`))
-}
-
-func TestFilterBedrockBetaTokens(t *testing.T) {
-	t.Run("supported tokens pass through", func(t *testing.T) {
-		tokens := []string{"interleaved-thinking-2025-05-14", "context-1m-2025-08-07", "compact-2026-01-12"}
-		result := filterBedrockBetaTokens(tokens)
-		assert.Equal(t, tokens, result)
-	})
-
-	t.Run("unsupported tokens are filtered out", func(t *testing.T) {
-		tokens := []string{"interleaved-thinking-2025-05-14", "output-128k-2025-02-19", "files-api-2025-04-14", "structured-outputs-2025-11-13"}
-		result := filterBedrockBetaTokens(tokens)
-		assert.Equal(t, []string{"interleaved-thinking-2025-05-14"}, result)
-	})
-
-	t.Run("advanced-tool-use transforms to tool-search-tool", func(t *testing.T) {
-		tokens := []string{"advanced-tool-use-2025-11-20"}
-		result := filterBedrockBetaTokens(tokens)
-		assert.Contains(t, result, "tool-search-tool-2025-10-19")
-		// tool-examples 自动关联
-		assert.Contains(t, result, "tool-examples-2025-10-29")
-	})
-
-	t.Run("tool-search-tool auto-associates tool-examples", func(t *testing.T) {
-		tokens := []string{"tool-search-tool-2025-10-19"}
-		result := filterBedrockBetaTokens(tokens)
-		assert.Contains(t, result, "tool-search-tool-2025-10-19")
-		assert.Contains(t, result, "tool-examples-2025-10-29")
-	})
-
-	t.Run("no duplication when tool-examples already present", func(t *testing.T) {
-		tokens := []string{"tool-search-tool-2025-10-19", "tool-examples-2025-10-29"}
-		result := filterBedrockBetaTokens(tokens)
-		count := 0
-		for _, t := range result {
-			if t == "tool-examples-2025-10-29" {
-				count++
-			}
-		}
-		assert.Equal(t, 1, count)
-	})
-
-	t.Run("empty input returns nil", func(t *testing.T) {
-		result := filterBedrockBetaTokens(nil)
-		assert.Nil(t, result)
-	})
-
-	t.Run("all unsupported returns nil", func(t *testing.T) {
-		result := filterBedrockBetaTokens([]string{"output-128k-2025-02-19", "effort-2025-11-24"})
-		assert.Nil(t, result)
-	})
-
-	t.Run("duplicate tokens are deduplicated", func(t *testing.T) {
-		tokens := []string{"context-1m-2025-08-07", "context-1m-2025-08-07"}
-		result := filterBedrockBetaTokens(tokens)
-		assert.Equal(t, []string{"context-1m-2025-08-07"}, result)
-	})
-}
-
-func TestPrepareBedrockRequestBody_BetaFiltering(t *testing.T) {
-	input := `{"messages":[{"role":"user","content":"hi"}],"max_tokens":100}`
-
-	t.Run("unsupported beta tokens are filtered", func(t *testing.T) {
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-opus-4-6-v1",
-			"interleaved-thinking-2025-05-14, output-128k-2025-02-19, files-api-2025-04-14")
-		require.NoError(t, err)
-		arr := gjson.GetBytes(result, "anthropic_beta").Array()
-		require.Len(t, arr, 1)
-		assert.Equal(t, "interleaved-thinking-2025-05-14", arr[0].String())
-	})
-
-	t.Run("advanced-tool-use transformed in full pipeline", func(t *testing.T) {
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-opus-4-6-v1",
-			"advanced-tool-use-2025-11-20")
-		require.NoError(t, err)
-		arr := gjson.GetBytes(result, "anthropic_beta").Array()
-		require.Len(t, arr, 2)
-		assert.Equal(t, "tool-search-tool-2025-10-19", arr[0].String())
-		assert.Equal(t, "tool-examples-2025-10-29", arr[1].String())
-	})
-}
-
-func TestBedrockCrossRegionPrefix(t *testing.T) {
-	tests := []struct {
-		region string
-		expect string
-	}{
-		// US regions
-		{"us-east-1", "us"},
-		{"us-east-2", "us"},
-		{"us-west-1", "us"},
-		{"us-west-2", "us"},
-		// GovCloud
-		{"us-gov-east-1", "us-gov"},
-		{"us-gov-west-1", "us-gov"},
-		// EU regions
-		{"eu-west-1", "eu"},
-		{"eu-west-2", "eu"},
-		{"eu-west-3", "eu"},
-		{"eu-central-1", "eu"},
-		{"eu-central-2", "eu"},
-		{"eu-north-1", "eu"},
-		{"eu-south-1", "eu"},
-		// APAC regions
-		{"ap-northeast-1", "jp"},
-		{"ap-northeast-2", "apac"},
-		{"ap-southeast-1", "apac"},
-		{"ap-southeast-2", "au"},
-		{"ap-south-1", "apac"},
-		// Canada / South America fallback to us
-		{"ca-central-1", "us"},
-		{"sa-east-1", "us"},
-		// Unknown defaults to us
-		{"me-south-1", "us"},
-	}
-	for _, tt := range tests {
-		t.Run(tt.region, func(t *testing.T) {
-			assert.Equal(t, tt.expect, BedrockCrossRegionPrefix(tt.region))
-		})
-	}
-}
-
-func TestResolveBedrockModelID(t *testing.T) {
-	t.Run("default alias resolves and adjusts region", func(t *testing.T) {
-		account := &Account{
-			Platform: PlatformAnthropic,
-			Type:     AccountTypeBedrock,
-			Credentials: map[string]any{
-				"aws_region": "eu-west-1",
-			},
-		}
-
-		modelID, ok := ResolveBedrockModelID(account, "claude-sonnet-4-5")
-		require.True(t, ok)
-		assert.Equal(t, "eu.anthropic.claude-sonnet-4-5-20250929-v1:0", modelID)
-	})
-
-	t.Run("custom alias mapping reuses default bedrock mapping", func(t *testing.T) {
-		account := &Account{
-			Platform: PlatformAnthropic,
-			Type:     AccountTypeBedrock,
-			Credentials: map[string]any{
-				"aws_region": "ap-southeast-2",
-				"model_mapping": map[string]any{
-					"claude-*": "claude-opus-4-6",
-				},
-			},
-		}
-
-		modelID, ok := ResolveBedrockModelID(account, "claude-opus-4-6-thinking")
-		require.True(t, ok)
-		assert.Equal(t, "au.anthropic.claude-opus-4-6-v1", modelID)
-	})
-
-	t.Run("force global rewrites anthropic regional model id", func(t *testing.T) {
-		account := &Account{
-			Platform: PlatformAnthropic,
-			Type:     AccountTypeBedrock,
-			Credentials: map[string]any{
-				"aws_region":       "us-east-1",
-				"aws_force_global": "true",
-				"model_mapping": map[string]any{
-					"claude-sonnet-4-6": "us.anthropic.claude-sonnet-4-6",
-				},
-			},
-		}
-
-		modelID, ok := ResolveBedrockModelID(account, "claude-sonnet-4-6")
-		require.True(t, ok)
-		assert.Equal(t, "global.anthropic.claude-sonnet-4-6", modelID)
-	})
-
-	t.Run("direct bedrock model id passes through", func(t *testing.T) {
-		account := &Account{
-			Platform: PlatformAnthropic,
-			Type:     AccountTypeBedrock,
-			Credentials: map[string]any{
-				"aws_region": "us-east-1",
-			},
-		}
-
-		modelID, ok := ResolveBedrockModelID(account, "anthropic.claude-haiku-4-5-20251001-v1:0")
-		require.True(t, ok)
-		assert.Equal(t, "anthropic.claude-haiku-4-5-20251001-v1:0", modelID)
-	})
-
-	t.Run("unsupported alias returns false", func(t *testing.T) {
-		account := &Account{
-			Platform: PlatformAnthropic,
-			Type:     AccountTypeBedrock,
-			Credentials: map[string]any{
-				"aws_region": "us-east-1",
-			},
-		}
-
-		_, ok := ResolveBedrockModelID(account, "claude-3-5-sonnet-20241022")
-		assert.False(t, ok)
-	})
-}
-
-func TestAutoInjectBedrockBetaTokens(t *testing.T) {
-	t.Run("inject interleaved-thinking when thinking present", func(t *testing.T) {
-		body := []byte(`{"thinking":{"type":"enabled","budget_tokens":10000},"messages":[{"role":"user","content":"hi"}]}`)
-		result := autoInjectBedrockBetaTokens(nil, body, "us.anthropic.claude-opus-4-6-v1")
-		assert.Contains(t, result, "interleaved-thinking-2025-05-14")
-	})
-
-	t.Run("no duplicate when already present", func(t *testing.T) {
-		body := []byte(`{"thinking":{"type":"enabled","budget_tokens":10000},"messages":[{"role":"user","content":"hi"}]}`)
-		result := autoInjectBedrockBetaTokens([]string{"interleaved-thinking-2025-05-14"}, body, "us.anthropic.claude-opus-4-6-v1")
-		count := 0
-		for _, t := range result {
-			if t == "interleaved-thinking-2025-05-14" {
-				count++
-			}
-		}
-		assert.Equal(t, 1, count)
-	})
-
-	t.Run("inject computer-use when computer tool present", func(t *testing.T) {
-		body := []byte(`{"tools":[{"type":"computer_20250124","name":"computer","display_width_px":1024}],"messages":[{"role":"user","content":"hi"}]}`)
-		result := autoInjectBedrockBetaTokens(nil, body, "us.anthropic.claude-opus-4-6-v1")
-		assert.Contains(t, result, "computer-use-2025-11-24")
-	})
-
-	t.Run("inject advanced-tool-use for programmatic tool calling", func(t *testing.T) {
-		body := []byte(`{"tools":[{"name":"bash","allowed_callers":["code_execution_20250825"]}],"messages":[{"role":"user","content":"hi"}]}`)
-		result := autoInjectBedrockBetaTokens(nil, body, "us.anthropic.claude-opus-4-6-v1")
-		assert.Contains(t, result, "advanced-tool-use-2025-11-20")
-	})
-
-	t.Run("inject advanced-tool-use for input examples", func(t *testing.T) {
-		body := []byte(`{"tools":[{"name":"bash","input_examples":[{"cmd":"ls"}]}],"messages":[{"role":"user","content":"hi"}]}`)
-		result := autoInjectBedrockBetaTokens(nil, body, "us.anthropic.claude-opus-4-6-v1")
-		assert.Contains(t, result, "advanced-tool-use-2025-11-20")
-	})
-
-	t.Run("inject tool-search-tool directly for pure tool search (no programmatic/inputExamples)", func(t *testing.T) {
-		body := []byte(`{"tools":[{"type":"tool_search_tool_regex_20251119","name":"search"}],"messages":[{"role":"user","content":"hi"}]}`)
-		result := autoInjectBedrockBetaTokens(nil, body, "us.anthropic.claude-sonnet-4-6")
-		// 纯 tool search 场景直接注入 Bedrock 特定头，不走 advanced-tool-use 转换
-		assert.Contains(t, result, "tool-search-tool-2025-10-19")
-		assert.NotContains(t, result, "advanced-tool-use-2025-11-20")
-	})
-
-	t.Run("inject advanced-tool-use when tool search combined with programmatic calling", func(t *testing.T) {
-		body := []byte(`{"tools":[{"type":"tool_search_tool_regex_20251119","name":"search"},{"name":"bash","allowed_callers":["code_execution_20250825"]}],"messages":[{"role":"user","content":"hi"}]}`)
-		result := autoInjectBedrockBetaTokens(nil, body, "us.anthropic.claude-sonnet-4-6")
-		// 混合场景使用 advanced-tool-use（后续由 filter 转换为 tool-search-tool）
-		assert.Contains(t, result, "advanced-tool-use-2025-11-20")
-	})
-
-	t.Run("do not inject tool-search beta for unsupported models", func(t *testing.T) {
-		body := []byte(`{"tools":[{"type":"tool_search_tool_regex_20251119","name":"search"}],"messages":[{"role":"user","content":"hi"}]}`)
-		result := autoInjectBedrockBetaTokens(nil, body, "anthropic.claude-3-5-sonnet-20241022-v2:0")
-		assert.NotContains(t, result, "advanced-tool-use-2025-11-20")
-		assert.NotContains(t, result, "tool-search-tool-2025-10-19")
-	})
-
-	t.Run("no injection for regular tools", func(t *testing.T) {
-		body := []byte(`{"tools":[{"name":"bash","description":"run bash","input_schema":{"type":"object"}}],"messages":[{"role":"user","content":"hi"}]}`)
-		result := autoInjectBedrockBetaTokens(nil, body, "us.anthropic.claude-opus-4-6-v1")
-		assert.Empty(t, result)
-	})
-
-	t.Run("no injection when no features detected", func(t *testing.T) {
-		body := []byte(`{"messages":[{"role":"user","content":"hi"}],"max_tokens":100}`)
-		result := autoInjectBedrockBetaTokens(nil, body, "us.anthropic.claude-opus-4-6-v1")
-		assert.Empty(t, result)
-	})
-
-	t.Run("preserves existing tokens", func(t *testing.T) {
-		body := []byte(`{"thinking":{"type":"enabled"},"messages":[{"role":"user","content":"hi"}]}`)
-		existing := []string{"context-1m-2025-08-07", "compact-2026-01-12"}
-		result := autoInjectBedrockBetaTokens(existing, body, "us.anthropic.claude-opus-4-6-v1")
-		assert.Contains(t, result, "context-1m-2025-08-07")
-		assert.Contains(t, result, "compact-2026-01-12")
-		assert.Contains(t, result, "interleaved-thinking-2025-05-14")
-	})
-}
-
-func TestResolveBedrockBetaTokens(t *testing.T) {
-	t.Run("body-only tool features resolve to final bedrock tokens", func(t *testing.T) {
-		body := []byte(`{"tools":[{"name":"bash","allowed_callers":["code_execution_20250825"]}],"messages":[{"role":"user","content":"hi"}]}`)
-		result := ResolveBedrockBetaTokens("", body, "us.anthropic.claude-opus-4-6-v1")
-		assert.Contains(t, result, "tool-search-tool-2025-10-19")
-		assert.Contains(t, result, "tool-examples-2025-10-29")
-	})
-
-	t.Run("unsupported client beta tokens are filtered out", func(t *testing.T) {
-		body := []byte(`{"messages":[{"role":"user","content":"hi"}]}`)
-		result := ResolveBedrockBetaTokens("interleaved-thinking-2025-05-14,files-api-2025-04-14", body, "us.anthropic.claude-opus-4-6-v1")
-		assert.Equal(t, []string{"interleaved-thinking-2025-05-14"}, result)
-	})
-}
-
-func TestPrepareBedrockRequestBody_AutoBetaInjection(t *testing.T) {
-	t.Run("thinking in body auto-injects beta without header", func(t *testing.T) {
-		input := `{"messages":[{"role":"user","content":"hi"}],"max_tokens":100,"thinking":{"type":"enabled","budget_tokens":10000}}`
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-opus-4-6-v1", "")
-		require.NoError(t, err)
-		arr := gjson.GetBytes(result, "anthropic_beta").Array()
-		found := false
-		for _, v := range arr {
-			if v.String() == "interleaved-thinking-2025-05-14" {
-				found = true
-			}
-		}
-		assert.True(t, found, "interleaved-thinking should be auto-injected")
-	})
-
-	t.Run("header tokens merged with auto-injected tokens", func(t *testing.T) {
-		input := `{"messages":[{"role":"user","content":"hi"}],"max_tokens":100,"thinking":{"type":"enabled","budget_tokens":10000}}`
-		result, err := PrepareBedrockRequestBody([]byte(input), "us.anthropic.claude-opus-4-6-v1", "context-1m-2025-08-07")
-		require.NoError(t, err)
-		arr := gjson.GetBytes(result, "anthropic_beta").Array()
-		names := make([]string, len(arr))
-		for i, v := range arr {
-			names[i] = v.String()
-		}
-		assert.Contains(t, names, "context-1m-2025-08-07")
-		assert.Contains(t, names, "interleaved-thinking-2025-05-14")
-	})
-}
-
-func TestAdjustBedrockModelRegionPrefix(t *testing.T) {
-	tests := []struct {
-		name    string
-		modelID string
-		region  string
-		expect  string
-	}{
-		// US region — no change needed
-		{"us region keeps us prefix", "us.anthropic.claude-opus-4-6-v1", "us-east-1", "us.anthropic.claude-opus-4-6-v1"},
-		// EU region — replace us → eu
-		{"eu region replaces prefix", "us.anthropic.claude-opus-4-6-v1", "eu-west-1", "eu.anthropic.claude-opus-4-6-v1"},
-		{"eu region sonnet", "us.anthropic.claude-sonnet-4-6", "eu-central-1", "eu.anthropic.claude-sonnet-4-6"},
-		// APAC region — jp and au have dedicated prefixes per AWS docs
-		{"jp region (ap-northeast-1)", "us.anthropic.claude-sonnet-4-5-20250929-v1:0", "ap-northeast-1", "jp.anthropic.claude-sonnet-4-5-20250929-v1:0"},
-		{"au region (ap-southeast-2)", "us.anthropic.claude-haiku-4-5-20251001-v1:0", "ap-southeast-2", "au.anthropic.claude-haiku-4-5-20251001-v1:0"},
-		{"apac region (ap-southeast-1)", "us.anthropic.claude-sonnet-4-5-20250929-v1:0", "ap-southeast-1", "apac.anthropic.claude-sonnet-4-5-20250929-v1:0"},
-		// eu → us (user manually set eu prefix, moved to us region)
-		{"eu to us", "eu.anthropic.claude-opus-4-6-v1", "us-west-2", "us.anthropic.claude-opus-4-6-v1"},
-		// global prefix — replace to match region
-		{"global to eu", "global.anthropic.claude-opus-4-6-v1", "eu-west-1", "eu.anthropic.claude-opus-4-6-v1"},
-		// No known prefix — leave unchanged
-		{"no prefix unchanged", "anthropic.claude-3-5-sonnet-20241022-v2:0", "eu-west-1", "anthropic.claude-3-5-sonnet-20241022-v2:0"},
-		// GovCloud — uses independent us-gov prefix
-		{"govcloud from us", "us.anthropic.claude-opus-4-6-v1", "us-gov-east-1", "us-gov.anthropic.claude-opus-4-6-v1"},
-		{"govcloud already correct", "us-gov.anthropic.claude-opus-4-6-v1", "us-gov-west-1", "us-gov.anthropic.claude-opus-4-6-v1"},
-		// Force global (special region value)
-		{"force global from us", "us.anthropic.claude-opus-4-6-v1", "global", "global.anthropic.claude-opus-4-6-v1"},
-		{"force global from eu", "eu.anthropic.claude-sonnet-4-6", "global", "global.anthropic.claude-sonnet-4-6"},
-	}
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			assert.Equal(t, tt.expect, AdjustBedrockModelRegionPrefix(tt.modelID, tt.region))
-		})
-	}
-}

backend/internal/service/bedrock_signer.go

@@ -1,67 +0,0 @@
-package service
-
-import (
-	"context"
-	"crypto/sha256"
-	"encoding/hex"
-	"fmt"
-	"net/http"
-	"time"
-
-	"github.com/aws/aws-sdk-go-v2/aws"
-	v4 "github.com/aws/aws-sdk-go-v2/aws/signer/v4"
-)
-
-// BedrockSigner 使用 AWS SigV4 对 Bedrock 请求签名
-type BedrockSigner struct {
-	credentials aws.Credentials
-	region      string
-	signer      *v4.Signer
-}
-
-// NewBedrockSigner 创建 BedrockSigner
-func NewBedrockSigner(accessKeyID, secretAccessKey, sessionToken, region string) *BedrockSigner {
-	return &BedrockSigner{
-		credentials: aws.Credentials{
-			AccessKeyID:     accessKeyID,
-			SecretAccessKey: secretAccessKey,
-			SessionToken:    sessionToken,
-		},
-		region: region,
-		signer: v4.NewSigner(),
-	}
-}
-
-// NewBedrockSignerFromAccount 从 Account 凭证创建 BedrockSigner
-func NewBedrockSignerFromAccount(account *Account) (*BedrockSigner, error) {
-	accessKeyID := account.GetCredential("aws_access_key_id")
-	if accessKeyID == "" {
-		return nil, fmt.Errorf("aws_access_key_id not found in credentials")
-	}
-	secretAccessKey := account.GetCredential("aws_secret_access_key")
-	if secretAccessKey == "" {
-		return nil, fmt.Errorf("aws_secret_access_key not found in credentials")
-	}
-	region := account.GetCredential("aws_region")
-	if region == "" {
-		region = defaultBedrockRegion
-	}
-	sessionToken := account.GetCredential("aws_session_token") // 可选
-
-	return NewBedrockSigner(accessKeyID, secretAccessKey, sessionToken, region), nil
-}
-
-// SignRequest 对 HTTP 请求进行 SigV4 签名
-// 重要约束：调用此方法前，req 应只包含 AWS 相关的 header（如 Content-Type、Accept）。
-// 非 AWS header（如 anthropic-beta）会参与签名计算，如果 Bedrock 服务端不识别这些 header，
-// 签名验证可能失败。litellm 通过 _filter_headers_for_aws_signature 实现头过滤，
-// 当前实现中 buildUpstreamRequestBedrock 仅设置了 Content-Type 和 Accept，因此是安全的。
-func (s *BedrockSigner) SignRequest(ctx context.Context, req *http.Request, body []byte) error {
-	payloadHash := sha256Hash(body)
-	return s.signer.SignHTTP(ctx, s.credentials, req, payloadHash, "bedrock", s.region, time.Now())
-}
-
-func sha256Hash(data []byte) string {
-	h := sha256.Sum256(data)
-	return hex.EncodeToString(h[:])
-}

backend/internal/service/bedrock_signer_test.go

@@ -1,35 +0,0 @@
-package service
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-)
-
-func TestNewBedrockSignerFromAccount_DefaultRegion(t *testing.T) {
-	account := &Account{
-		Platform: PlatformAnthropic,
-		Type:     AccountTypeBedrock,
-		Credentials: map[string]any{
-			"aws_access_key_id":     "test-akid",
-			"aws_secret_access_key": "test-secret",
-		},
-	}
-
-	signer, err := NewBedrockSignerFromAccount(account)
-	require.NoError(t, err)
-	require.NotNil(t, signer)
-	assert.Equal(t, defaultBedrockRegion, signer.region)
-}
-
-func TestFilterBetaTokens(t *testing.T) {
-	tokens := []string{"interleaved-thinking-2025-05-14", "tool-search-tool-2025-10-19"}
-	filterSet := map[string]struct{}{
-		"tool-search-tool-2025-10-19": {},
-	}
-
-	assert.Equal(t, []string{"interleaved-thinking-2025-05-14"}, filterBetaTokens(tokens, filterSet))
-	assert.Equal(t, tokens, filterBetaTokens(tokens, nil))
-	assert.Nil(t, filterBetaTokens(nil, filterSet))
-}

backend/internal/service/bedrock_stream.go

@@ -1,414 +0,0 @@
-package service
-
-import (
-	"bufio"
-	"context"
-	"encoding/base64"
-	"errors"
-	"fmt"
-	"hash/crc32"
-	"io"
-	"net/http"
-	"sync/atomic"
-	"time"
-
-	"github.com/gin-gonic/gin"
-	"github.com/tidwall/gjson"
-	"github.com/tidwall/sjson"
-
-	"github.com/Wei-Shaw/sub2api/internal/pkg/logger"
-)
-
-// handleBedrockStreamingResponse 处理 Bedrock InvokeModelWithResponseStream 的 EventStream 响应
-// Bedrock 返回 AWS EventStream 二进制格式，每个事件的 payload 中 chunk.bytes 是 base64 编码的
-// Claude SSE 事件 JSON。本方法解码后转换为标准 SSE 格式写入客户端。
-func (s *GatewayService) handleBedrockStreamingResponse(
-	ctx context.Context,
-	resp *http.Response,
-	c *gin.Context,
-	account *Account,
-	startTime time.Time,
-	model string,
-) (*streamingResult, error) {
-	w := c.Writer
-	flusher, ok := w.(http.Flusher)
-	if !ok {
-		return nil, errors.New("streaming not supported")
-	}
-
-	c.Header("Content-Type", "text/event-stream")
-	c.Header("Cache-Control", "no-cache")
-	c.Header("Connection", "keep-alive")
-	c.Header("X-Accel-Buffering", "no")
-	if v := resp.Header.Get("x-amzn-requestid"); v != "" {
-		c.Header("x-request-id", v)
-	}
-
-	usage := &ClaudeUsage{}
-	var firstTokenMs *int
-	clientDisconnected := false
-
-	// Bedrock EventStream 使用 application/vnd.amazon.eventstream 二进制格式。
-	// 每个帧结构：total_length(4) + headers_length(4) + prelude_crc(4) + headers + payload + message_crc(4)
-	// 但更实用的方式是使用行扫描找 JSON chunks，因为 Bedrock 的响应在二进制帧中。
-	// 我们使用 EventStream decoder 来正确解析。
-	decoder := newBedrockEventStreamDecoder(resp.Body)
-
-	type decodeEvent struct {
-		payload []byte
-		err     error
-	}
-	events := make(chan decodeEvent, 16)
-	done := make(chan struct{})
-	sendEvent := func(ev decodeEvent) bool {
-		select {
-		case events <- ev:
-			return true
-		case <-done:
-			return false
-		}
-	}
-	var lastReadAt atomic.Int64
-	lastReadAt.Store(time.Now().UnixNano())
-
-	go func() {
-		defer close(events)
-		for {
-			payload, err := decoder.Decode()
-			if err != nil {
-				if err == io.EOF {
-					return
-				}
-				_ = sendEvent(decodeEvent{err: err})
-				return
-			}
-			lastReadAt.Store(time.Now().UnixNano())
-			if !sendEvent(decodeEvent{payload: payload}) {
-				return
-			}
-		}
-	}()
-	defer close(done)
-
-	streamInterval := time.Duration(0)
-	if s.cfg != nil && s.cfg.Gateway.StreamDataIntervalTimeout > 0 {
-		streamInterval = time.Duration(s.cfg.Gateway.StreamDataIntervalTimeout) * time.Second
-	}
-	var intervalTicker *time.Ticker
-	if streamInterval > 0 {
-		intervalTicker = time.NewTicker(streamInterval)
-		defer intervalTicker.Stop()
-	}
-	var intervalCh <-chan time.Time
-	if intervalTicker != nil {
-		intervalCh = intervalTicker.C
-	}
-
-	for {
-		select {
-		case ev, ok := <-events:
-			if !ok {
-				if !clientDisconnected {
-					flusher.Flush()
-				}
-				return &streamingResult{usage: usage, firstTokenMs: firstTokenMs, clientDisconnect: clientDisconnected}, nil
-			}
-			if ev.err != nil {
-				if clientDisconnected {
-					return &streamingResult{usage: usage, firstTokenMs: firstTokenMs, clientDisconnect: true}, nil
-				}
-				if errors.Is(ev.err, context.Canceled) || errors.Is(ev.err, context.DeadlineExceeded) {
-					return &streamingResult{usage: usage, firstTokenMs: firstTokenMs, clientDisconnect: true}, nil
-				}
-				return &streamingResult{usage: usage, firstTokenMs: firstTokenMs}, fmt.Errorf("bedrock stream read error: %w", ev.err)
-			}
-
-			// payload 是 JSON，提取 chunk.bytes（base64 编码的 Claude SSE 事件数据）
-			sseData := extractBedrockChunkData(ev.payload)
-			if sseData == nil {
-				continue
-			}
-
-			if firstTokenMs == nil {
-				ms := int(time.Since(startTime).Milliseconds())
-				firstTokenMs = &ms
-			}
-
-			// 转换 Bedrock 特有的 amazon-bedrock-invocationMetrics 为标准 Anthropic usage 格式
-			// 同时移除该字段避免透传给客户端
-			sseData = transformBedrockInvocationMetrics(sseData)
-
-			// 解析 SSE 事件数据提取 usage
-			s.parseSSEUsagePassthrough(string(sseData), usage)
-
-			// 确定 SSE event type
-			eventType := gjson.GetBytes(sseData, "type").String()
-
-			// 写入标准 SSE 格式
-			if !clientDisconnected {
-				var writeErr error
-				if eventType != "" {
-					_, writeErr = fmt.Fprintf(w, "event: %s\ndata: %s\n\n", eventType, sseData)
-				} else {
-					_, writeErr = fmt.Fprintf(w, "data: %s\n\n", sseData)
-				}
-				if writeErr != nil {
-					clientDisconnected = true
-					logger.LegacyPrintf("service.gateway", "[Bedrock] Client disconnected during streaming, continue draining for usage: account=%d", account.ID)
-				} else {
-					flusher.Flush()
-				}
-			}
-
-		case <-intervalCh:
-			lastRead := time.Unix(0, lastReadAt.Load())
-			if time.Since(lastRead) < streamInterval {
-				continue
-			}
-			if clientDisconnected {
-				return &streamingResult{usage: usage, firstTokenMs: firstTokenMs, clientDisconnect: true}, nil
-			}
-			logger.LegacyPrintf("service.gateway", "[Bedrock] Stream data interval timeout: account=%d model=%s interval=%s", account.ID, model, streamInterval)
-			if s.rateLimitService != nil {
-				s.rateLimitService.HandleStreamTimeout(ctx, account, model)
-			}
-			return &streamingResult{usage: usage, firstTokenMs: firstTokenMs}, fmt.Errorf("stream data interval timeout")
-		}
-	}
-}
-
-// extractBedrockChunkData 从 Bedrock EventStream payload 中提取 Claude SSE 事件数据
-// Bedrock payload 格式：{"bytes":"<base64-encoded-json>"}
-func extractBedrockChunkData(payload []byte) []byte {
-	b64 := gjson.GetBytes(payload, "bytes").String()
-	if b64 == "" {
-		return nil
-	}
-	decoded, err := base64.StdEncoding.DecodeString(b64)
-	if err != nil {
-		return nil
-	}
-	return decoded
-}
-
-// transformBedrockInvocationMetrics 将 Bedrock 特有的 amazon-bedrock-invocationMetrics
-// 转换为标准 Anthropic usage 格式，并从 SSE 数据中移除该字段。
-//
-// Bedrock Invoke 返回的 message_delta 事件可能包含：
-//
-//	{"type":"message_delta","delta":{...},"amazon-bedrock-invocationMetrics":{"inputTokenCount":150,"outputTokenCount":42}}
-//
-// 转换为：
-//
-//	{"type":"message_delta","delta":{...},"usage":{"input_tokens":150,"output_tokens":42}}
-func transformBedrockInvocationMetrics(data []byte) []byte {
-	metrics := gjson.GetBytes(data, "amazon-bedrock-invocationMetrics")
-	if !metrics.Exists() || !metrics.IsObject() {
-		return data
-	}
-
-	// 移除 Bedrock 特有字段
-	data, _ = sjson.DeleteBytes(data, "amazon-bedrock-invocationMetrics")
-
-	// 如果已有标准 usage 字段，不覆盖
-	if gjson.GetBytes(data, "usage").Exists() {
-		return data
-	}
-
-	// 转换 camelCase → snake_case 写入 usage
-	inputTokens := metrics.Get("inputTokenCount")
-	outputTokens := metrics.Get("outputTokenCount")
-	if inputTokens.Exists() {
-		data, _ = sjson.SetBytes(data, "usage.input_tokens", inputTokens.Int())
-	}
-	if outputTokens.Exists() {
-		data, _ = sjson.SetBytes(data, "usage.output_tokens", outputTokens.Int())
-	}
-
-	return data
-}
-
-// bedrockEventStreamDecoder 解码 AWS EventStream 二进制帧
-// EventStream 帧格式：
-//
-//	[total_byte_length: 4 bytes]
-//	[headers_byte_length: 4 bytes]
-//	[prelude_crc: 4 bytes]
-//	[headers: variable]
-//	[payload: variable]
-//	[message_crc: 4 bytes]
-type bedrockEventStreamDecoder struct {
-	reader *bufio.Reader
-}
-
-func newBedrockEventStreamDecoder(r io.Reader) *bedrockEventStreamDecoder {
-	return &bedrockEventStreamDecoder{
-		reader: bufio.NewReaderSize(r, 64*1024),
-	}
-}
-
-// Decode 读取下一个 EventStream 帧并返回 chunk 类型事件的 payload
-func (d *bedrockEventStreamDecoder) Decode() ([]byte, error) {
-	for {
-		// 读取 prelude: total_length(4) + headers_length(4) + prelude_crc(4) = 12 bytes
-		prelude := make([]byte, 12)
-		if _, err := io.ReadFull(d.reader, prelude); err != nil {
-			return nil, err
-		}
-
-		// 验证 prelude CRC（AWS EventStream 使用标准 CRC32 / IEEE）
-		preludeCRC := bedrockReadUint32(prelude[8:12])
-		if crc32.Checksum(prelude[0:8], crc32IEEETable) != preludeCRC {
-			return nil, fmt.Errorf("eventstream prelude CRC mismatch")
-		}
-
-		totalLength := bedrockReadUint32(prelude[0:4])
-		headersLength := bedrockReadUint32(prelude[4:8])
-
-		if totalLength < 16 { // minimum: 12 prelude + 4 message_crc
-			return nil, fmt.Errorf("invalid eventstream frame: total_length=%d", totalLength)
-		}
-
-		// 读取 headers + payload + message_crc
-		remaining := int(totalLength) - 12
-		if remaining <= 0 {
-			continue
-		}
-		data := make([]byte, remaining)
-		if _, err := io.ReadFull(d.reader, data); err != nil {
-			return nil, err
-		}
-
-		// 验证 message CRC（覆盖 prelude + headers + payload）
-		messageCRC := bedrockReadUint32(data[len(data)-4:])
-		h := crc32.New(crc32IEEETable)
-		_, _ = h.Write(prelude)
-		_, _ = h.Write(data[:len(data)-4])
-		if h.Sum32() != messageCRC {
-			return nil, fmt.Errorf("eventstream message CRC mismatch")
-		}
-
-		// 解析 headers
-		headers := data[:headersLength]
-		payload := data[headersLength : len(data)-4] // 去掉 message_crc
-
-		// 从 headers 中提取 :event-type
-		eventType := extractEventStreamHeaderValue(headers, ":event-type")
-
-		// 只处理 chunk 事件
-		if eventType == "chunk" {
-			// payload 是完整的 JSON，包含 bytes 字段
-			return payload, nil
-		}
-
-		// 检查异常事件
-		exceptionType := extractEventStreamHeaderValue(headers, ":exception-type")
-		if exceptionType != "" {
-			return nil, fmt.Errorf("bedrock exception: %s: %s", exceptionType, string(payload))
-		}
-
-		messageType := extractEventStreamHeaderValue(headers, ":message-type")
-		if messageType == "exception" || messageType == "error" {
-			return nil, fmt.Errorf("bedrock error: %s", string(payload))
-		}
-
-		// 跳过其他事件类型（如 initial-response）
-	}
-}
-
-// extractEventStreamHeaderValue 从 EventStream headers 二进制数据中提取指定 header 的字符串值
-// EventStream header 格式：
-//
-//	[name_length: 1 byte][name: variable][value_type: 1 byte][value: variable]
-//
-// value_type = 7 表示 string 类型，前 2 bytes 为长度
-func extractEventStreamHeaderValue(headers []byte, targetName string) string {
-	pos := 0
-	for pos < len(headers) {
-		if pos >= len(headers) {
-			break
-		}
-		nameLen := int(headers[pos])
-		pos++
-		if pos+nameLen > len(headers) {
-			break
-		}
-		name := string(headers[pos : pos+nameLen])
-		pos += nameLen
-
-		if pos >= len(headers) {
-			break
-		}
-		valueType := headers[pos]
-		pos++
-
-		switch valueType {
-		case 7: // string
-			if pos+2 > len(headers) {
-				return ""
-			}
-			valueLen := int(bedrockReadUint16(headers[pos : pos+2]))
-			pos += 2
-			if pos+valueLen > len(headers) {
-				return ""
-			}
-			value := string(headers[pos : pos+valueLen])
-			pos += valueLen
-			if name == targetName {
-				return value
-			}
-		case 0: // bool true
-			if name == targetName {
-				return "true"
-			}
-		case 1: // bool false
-			if name == targetName {
-				return "false"
-			}
-		case 2: // byte
-			pos++
-			if name == targetName {
-				return ""
-			}
-		case 3: // short
-			pos += 2
-			if name == targetName {
-				return ""
-			}
-		case 4: // int
-			pos += 4
-			if name == targetName {
-				return ""
-			}
-		case 5: // long
-			pos += 8
-			if name == targetName {
-				return ""
-			}
-		case 6: // bytes
-			if pos+2 > len(headers) {
-				return ""
-			}
-			valueLen := int(bedrockReadUint16(headers[pos : pos+2]))
-			pos += 2 + valueLen
-		case 8: // timestamp
-			pos += 8
-		case 9: // uuid
-			pos += 16
-		default:
-			return "" // 未知类型，无法继续解析
-		}
-	}
-	return ""
-}
-
-// crc32IEEETable is the CRC32 / IEEE table used by AWS EventStream.
-var crc32IEEETable = crc32.MakeTable(crc32.IEEE)
-
-func bedrockReadUint32(b []byte) uint32 {
-	return uint32(b[0])<<24 | uint32(b[1])<<16 | uint32(b[2])<<8 | uint32(b[3])
-}
-
-func bedrockReadUint16(b []byte) uint16 {
-	return uint16(b[0])<<8 | uint16(b[1])
-}

backend/internal/service/bedrock_stream_test.go

@@ -1,261 +0,0 @@
-package service
-
-import (
-	"bytes"
-	"encoding/base64"
-	"encoding/binary"
-	"hash/crc32"
-	"io"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
-	"github.com/tidwall/gjson"
-)
-
-func TestExtractBedrockChunkData(t *testing.T) {
-	t.Run("valid base64 payload", func(t *testing.T) {
-		original := `{"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"Hello"}}`
-		b64 := base64.StdEncoding.EncodeToString([]byte(original))
-		payload := []byte(`{"bytes":"` + b64 + `"}`)
-
-		result := extractBedrockChunkData(payload)
-		require.NotNil(t, result)
-		assert.JSONEq(t, original, string(result))
-	})
-
-	t.Run("empty bytes field", func(t *testing.T) {
-		result := extractBedrockChunkData([]byte(`{"bytes":""}`))
-		assert.Nil(t, result)
-	})
-
-	t.Run("no bytes field", func(t *testing.T) {
-		result := extractBedrockChunkData([]byte(`{"other":"value"}`))
-		assert.Nil(t, result)
-	})
-
-	t.Run("invalid base64", func(t *testing.T) {
-		result := extractBedrockChunkData([]byte(`{"bytes":"not-valid-base64!!!"}`))
-		assert.Nil(t, result)
-	})
-}
-
-func TestTransformBedrockInvocationMetrics(t *testing.T) {
-	t.Run("converts metrics to usage", func(t *testing.T) {
-		input := `{"type":"message_delta","delta":{"stop_reason":"end_turn"},"amazon-bedrock-invocationMetrics":{"inputTokenCount":150,"outputTokenCount":42}}`
-		result := transformBedrockInvocationMetrics([]byte(input))
-
-		// amazon-bedrock-invocationMetrics should be removed
-		assert.False(t, gjson.GetBytes(result, "amazon-bedrock-invocationMetrics").Exists())
-		// usage should be set
-		assert.Equal(t, int64(150), gjson.GetBytes(result, "usage.input_tokens").Int())
-		assert.Equal(t, int64(42), gjson.GetBytes(result, "usage.output_tokens").Int())
-		// original fields preserved
-		assert.Equal(t, "message_delta", gjson.GetBytes(result, "type").String())
-		assert.Equal(t, "end_turn", gjson.GetBytes(result, "delta.stop_reason").String())
-	})
-
-	t.Run("no metrics present", func(t *testing.T) {
-		input := `{"type":"content_block_delta","index":0,"delta":{"type":"text_delta","text":"Hi"}}`
-		result := transformBedrockInvocationMetrics([]byte(input))
-		assert.JSONEq(t, input, string(result))
-	})
-
-	t.Run("does not overwrite existing usage", func(t *testing.T) {
-		input := `{"type":"message_delta","usage":{"output_tokens":100},"amazon-bedrock-invocationMetrics":{"inputTokenCount":150,"outputTokenCount":42}}`
-		result := transformBedrockInvocationMetrics([]byte(input))
-
-		// metrics removed but existing usage preserved
-		assert.False(t, gjson.GetBytes(result, "amazon-bedrock-invocationMetrics").Exists())
-		assert.Equal(t, int64(100), gjson.GetBytes(result, "usage.output_tokens").Int())
-	})
-}
-
-func TestExtractEventStreamHeaderValue(t *testing.T) {
-	// Build a header with :event-type = "chunk" (string type = 7)
-	buildStringHeader := func(name, value string) []byte {
-		var buf bytes.Buffer
-		// name length (1 byte)
-		_ = buf.WriteByte(byte(len(name)))
-		// name
-		_, _ = buf.WriteString(name)
-		// value type (7 = string)
-		_ = buf.WriteByte(7)
-		// value length (2 bytes, big-endian)
-		_ = binary.Write(&buf, binary.BigEndian, uint16(len(value)))
-		// value
-		_, _ = buf.WriteString(value)
-		return buf.Bytes()
-	}
-
-	t.Run("find string header", func(t *testing.T) {
-		headers := buildStringHeader(":event-type", "chunk")
-		assert.Equal(t, "chunk", extractEventStreamHeaderValue(headers, ":event-type"))
-	})
-
-	t.Run("header not found", func(t *testing.T) {
-		headers := buildStringHeader(":event-type", "chunk")
-		assert.Equal(t, "", extractEventStreamHeaderValue(headers, ":message-type"))
-	})
-
-	t.Run("multiple headers", func(t *testing.T) {
-		var buf bytes.Buffer
-		_, _ = buf.Write(buildStringHeader(":content-type", "application/json"))
-		_, _ = buf.Write(buildStringHeader(":event-type", "chunk"))
-		_, _ = buf.Write(buildStringHeader(":message-type", "event"))
-
-		headers := buf.Bytes()
-		assert.Equal(t, "chunk", extractEventStreamHeaderValue(headers, ":event-type"))
-		assert.Equal(t, "application/json", extractEventStreamHeaderValue(headers, ":content-type"))
-		assert.Equal(t, "event", extractEventStreamHeaderValue(headers, ":message-type"))
-	})
-
-	t.Run("empty headers", func(t *testing.T) {
-		assert.Equal(t, "", extractEventStreamHeaderValue([]byte{}, ":event-type"))
-	})
-}
-
-func TestBedrockEventStreamDecoder(t *testing.T) {
-	crc32IeeeTab := crc32.MakeTable(crc32.IEEE)
-
-	// Build a valid EventStream frame with correct CRC32/IEEE checksums.
-	buildFrame := func(eventType string, payload []byte) []byte {
-		// Build headers
-		var headersBuf bytes.Buffer
-		// :event-type header
-		_ = headersBuf.WriteByte(byte(len(":event-type")))
-		_, _ = headersBuf.WriteString(":event-type")
-		_ = headersBuf.WriteByte(7) // string type
-		_ = binary.Write(&headersBuf, binary.BigEndian, uint16(len(eventType)))
-		_, _ = headersBuf.WriteString(eventType)
-		// :message-type header
-		_ = headersBuf.WriteByte(byte(len(":message-type")))
-		_, _ = headersBuf.WriteString(":message-type")
-		_ = headersBuf.WriteByte(7)
-		_ = binary.Write(&headersBuf, binary.BigEndian, uint16(len("event")))
-		_, _ = headersBuf.WriteString("event")
-
-		headers := headersBuf.Bytes()
-		headersLen := uint32(len(headers))
-		// total = 12 (prelude) + headers + payload + 4 (message_crc)
-		totalLen := uint32(12 + len(headers) + len(payload) + 4)
-
-		// Prelude: total_length(4) + headers_length(4)
-		var preludeBuf bytes.Buffer
-		_ = binary.Write(&preludeBuf, binary.BigEndian, totalLen)
-		_ = binary.Write(&preludeBuf, binary.BigEndian, headersLen)
-		preludeBytes := preludeBuf.Bytes()
-		preludeCRC := crc32.Checksum(preludeBytes, crc32IeeeTab)
-
-		// Build frame: prelude + prelude_crc + headers + payload
-		var frame bytes.Buffer
-		_, _ = frame.Write(preludeBytes)
-		_ = binary.Write(&frame, binary.BigEndian, preludeCRC)
-		_, _ = frame.Write(headers)
-		_, _ = frame.Write(payload)
-
-		// Message CRC covers everything before itself
-		messageCRC := crc32.Checksum(frame.Bytes(), crc32IeeeTab)
-		_ = binary.Write(&frame, binary.BigEndian, messageCRC)
-		return frame.Bytes()
-	}
-
-	t.Run("decode chunk event", func(t *testing.T) {
-		payload := []byte(`{"bytes":"dGVzdA=="}`) // base64("test")
-		frame := buildFrame("chunk", payload)
-
-		decoder := newBedrockEventStreamDecoder(bytes.NewReader(frame))
-		result, err := decoder.Decode()
-		require.NoError(t, err)
-		assert.Equal(t, payload, result)
-	})
-
-	t.Run("skip non-chunk events", func(t *testing.T) {
-		// Write initial-response followed by chunk
-		var buf bytes.Buffer
-		_, _ = buf.Write(buildFrame("initial-response", []byte(`{}`)))
-		chunkPayload := []byte(`{"bytes":"aGVsbG8="}`)
-		_, _ = buf.Write(buildFrame("chunk", chunkPayload))
-
-		decoder := newBedrockEventStreamDecoder(&buf)
-		result, err := decoder.Decode()
-		require.NoError(t, err)
-		assert.Equal(t, chunkPayload, result)
-	})
-
-	t.Run("EOF on empty input", func(t *testing.T) {
-		decoder := newBedrockEventStreamDecoder(bytes.NewReader(nil))
-		_, err := decoder.Decode()
-		assert.Equal(t, io.EOF, err)
-	})
-
-	t.Run("corrupted prelude CRC", func(t *testing.T) {
-		frame := buildFrame("chunk", []byte(`{"bytes":"dGVzdA=="}`))
-		// Corrupt the prelude CRC (bytes 8-11)
-		frame[8] ^= 0xFF
-		decoder := newBedrockEventStreamDecoder(bytes.NewReader(frame))
-		_, err := decoder.Decode()
-		require.Error(t, err)
-		assert.Contains(t, err.Error(), "prelude CRC mismatch")
-	})
-
-	t.Run("corrupted message CRC", func(t *testing.T) {
-		frame := buildFrame("chunk", []byte(`{"bytes":"dGVzdA=="}`))
-		// Corrupt the message CRC (last 4 bytes)
-		frame[len(frame)-1] ^= 0xFF
-		decoder := newBedrockEventStreamDecoder(bytes.NewReader(frame))
-		_, err := decoder.Decode()
-		require.Error(t, err)
-		assert.Contains(t, err.Error(), "message CRC mismatch")
-	})
-
-	t.Run("castagnoli encoded frame is rejected", func(t *testing.T) {
-		castagnoliTab := crc32.MakeTable(crc32.Castagnoli)
-		payload := []byte(`{"bytes":"dGVzdA=="}`)
-
-		var headersBuf bytes.Buffer
-		_ = headersBuf.WriteByte(byte(len(":event-type")))
-		_, _ = headersBuf.WriteString(":event-type")
-		_ = headersBuf.WriteByte(7)
-		_ = binary.Write(&headersBuf, binary.BigEndian, uint16(len("chunk")))
-		_, _ = headersBuf.WriteString("chunk")
-
-		headers := headersBuf.Bytes()
-		headersLen := uint32(len(headers))
-		totalLen := uint32(12 + len(headers) + len(payload) + 4)
-
-		var preludeBuf bytes.Buffer
-		_ = binary.Write(&preludeBuf, binary.BigEndian, totalLen)
-		_ = binary.Write(&preludeBuf, binary.BigEndian, headersLen)
-		preludeBytes := preludeBuf.Bytes()
-
-		var frame bytes.Buffer
-		_, _ = frame.Write(preludeBytes)
-		_ = binary.Write(&frame, binary.BigEndian, crc32.Checksum(preludeBytes, castagnoliTab))
-		_, _ = frame.Write(headers)
-		_, _ = frame.Write(payload)
-		_ = binary.Write(&frame, binary.BigEndian, crc32.Checksum(frame.Bytes(), castagnoliTab))
-
-		decoder := newBedrockEventStreamDecoder(bytes.NewReader(frame.Bytes()))
-		_, err := decoder.Decode()
-		require.Error(t, err)
-		assert.Contains(t, err.Error(), "prelude CRC mismatch")
-	})
-}
-
-func TestBuildBedrockURL(t *testing.T) {
-	t.Run("stream URL with colon in model ID", func(t *testing.T) {
-		url := BuildBedrockURL("us-east-1", "us.anthropic.claude-opus-4-5-20251101-v1:0", true)
-		assert.Equal(t, "https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-opus-4-5-20251101-v1%3A0/invoke-with-response-stream", url)
-	})
-
-	t.Run("non-stream URL with colon in model ID", func(t *testing.T) {
-		url := BuildBedrockURL("eu-west-1", "eu.anthropic.claude-sonnet-4-5-20250929-v1:0", false)
-		assert.Equal(t, "https://bedrock-runtime.eu-west-1.amazonaws.com/model/eu.anthropic.claude-sonnet-4-5-20250929-v1%3A0/invoke", url)
-	})
-
-	t.Run("model ID without colon", func(t *testing.T) {
-		url := BuildBedrockURL("us-east-1", "us.anthropic.claude-sonnet-4-6", true)
-		assert.Equal(t, "https://bedrock-runtime.us-east-1.amazonaws.com/model/us.anthropic.claude-sonnet-4-6/invoke-with-response-stream", url)
-	})
-}

backend/internal/service/claude_max_cache_billing_policy.go

@@ -0,0 +1,450 @@
+package service
+
+import (
+	"encoding/json"
+	"strings"
+
+	"github.com/Wei-Shaw/sub2api/internal/pkg/claude"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/logger"
+	"github.com/tidwall/gjson"
+)
+
+type claudeMaxCacheBillingOutcome struct {
+	Simulated bool
+}
+
+func applyClaudeMaxCacheBillingPolicyToUsage(usage *ClaudeUsage, parsed *ParsedRequest, group *Group, model string, accountID int64) claudeMaxCacheBillingOutcome {
+	var out claudeMaxCacheBillingOutcome
+	if usage == nil || !shouldApplyClaudeMaxBillingRulesForUsage(group, model, parsed) {
+		return out
+	}
+
+	resolvedModel := strings.TrimSpace(model)
+	if resolvedModel == "" && parsed != nil {
+		resolvedModel = strings.TrimSpace(parsed.Model)
+	}
+
+	if hasCacheCreationTokens(*usage) {
+		// Upstream already returned cache creation usage; keep original usage.
+		return out
+	}
+
+	if !shouldSimulateClaudeMaxUsageForUsage(*usage, parsed) {
+		return out
+	}
+	beforeInputTokens := usage.InputTokens
+	out.Simulated = safelyProjectUsageToClaudeMax1H(usage, parsed)
+	if out.Simulated {
+		logger.LegacyPrintf("service.gateway", "simulate_claude_max_usage: model=%s account=%d input_tokens:%d->%d cache_creation_1h=%d",
+			resolvedModel,
+			accountID,
+			beforeInputTokens,
+			usage.InputTokens,
+			usage.CacheCreation1hTokens,
+		)
+	}
+	return out
+}
+
+func isClaudeFamilyModel(model string) bool {
+	normalized := strings.ToLower(strings.TrimSpace(claude.NormalizeModelID(model)))
+	if normalized == "" {
+		return false
+	}
+	return strings.Contains(normalized, "claude-")
+}
+
+func shouldApplyClaudeMaxBillingRules(input *RecordUsageInput) bool {
+	if input == nil || input.Result == nil || input.APIKey == nil || input.APIKey.Group == nil {
+		return false
+	}
+	return shouldApplyClaudeMaxBillingRulesForUsage(input.APIKey.Group, input.Result.Model, input.ParsedRequest)
+}
+
+func shouldApplyClaudeMaxBillingRulesForUsage(group *Group, model string, parsed *ParsedRequest) bool {
+	if group == nil {
+		return false
+	}
+	if !group.SimulateClaudeMaxEnabled || group.Platform != PlatformAnthropic {
+		return false
+	}
+
+	resolvedModel := model
+	if resolvedModel == "" && parsed != nil {
+		resolvedModel = parsed.Model
+	}
+	if !isClaudeFamilyModel(resolvedModel) {
+		return false
+	}
+	return true
+}
+
+func hasCacheCreationTokens(usage ClaudeUsage) bool {
+	return usage.CacheCreationInputTokens > 0 || usage.CacheCreation5mTokens > 0 || usage.CacheCreation1hTokens > 0
+}
+
+func shouldSimulateClaudeMaxUsage(input *RecordUsageInput) bool {
+	if input == nil || input.Result == nil {
+		return false
+	}
+	if !shouldApplyClaudeMaxBillingRules(input) {
+		return false
+	}
+	return shouldSimulateClaudeMaxUsageForUsage(input.Result.Usage, input.ParsedRequest)
+}
+
+func shouldSimulateClaudeMaxUsageForUsage(usage ClaudeUsage, parsed *ParsedRequest) bool {
+	if usage.InputTokens <= 0 {
+		return false
+	}
+	if hasCacheCreationTokens(usage) {
+		return false
+	}
+	if !hasClaudeCacheSignals(parsed) {
+		return false
+	}
+	return true
+}
+
+func safelyProjectUsageToClaudeMax1H(usage *ClaudeUsage, parsed *ParsedRequest) (changed bool) {
+	defer func() {
+		if r := recover(); r != nil {
+			logger.LegacyPrintf("service.gateway", "simulate_claude_max_usage skipped: panic=%v", r)
+			changed = false
+		}
+	}()
+	return projectUsageToClaudeMax1H(usage, parsed)
+}
+
+func projectUsageToClaudeMax1H(usage *ClaudeUsage, parsed *ParsedRequest) bool {
+	if usage == nil {
+		return false
+	}
+	totalWindowTokens := usage.InputTokens + usage.CacheCreation5mTokens + usage.CacheCreation1hTokens
+	if totalWindowTokens <= 1 {
+		return false
+	}
+
+	simulatedInputTokens := computeClaudeMaxProjectedInputTokens(totalWindowTokens, parsed)
+	if simulatedInputTokens <= 0 {
+		simulatedInputTokens = 1
+	}
+	if simulatedInputTokens >= totalWindowTokens {
+		simulatedInputTokens = totalWindowTokens - 1
+	}
+
+	cacheCreation1hTokens := totalWindowTokens - simulatedInputTokens
+	if usage.InputTokens == simulatedInputTokens &&
+		usage.CacheCreation5mTokens == 0 &&
+		usage.CacheCreation1hTokens == cacheCreation1hTokens &&
+		usage.CacheCreationInputTokens == cacheCreation1hTokens {
+		return false
+	}
+
+	usage.InputTokens = simulatedInputTokens
+	usage.CacheCreation5mTokens = 0
+	usage.CacheCreation1hTokens = cacheCreation1hTokens
+	usage.CacheCreationInputTokens = cacheCreation1hTokens
+	return true
+}
+
+type claudeCacheProjection struct {
+	HasBreakpoint        bool
+	BreakpointCount      int
+	TotalEstimatedTokens int
+	TailEstimatedTokens  int
+}
+
+func computeClaudeMaxProjectedInputTokens(totalWindowTokens int, parsed *ParsedRequest) int {
+	if totalWindowTokens <= 1 {
+		return totalWindowTokens
+	}
+
+	projection := analyzeClaudeCacheProjection(parsed)
+	if !projection.HasBreakpoint || projection.TotalEstimatedTokens <= 0 || projection.TailEstimatedTokens <= 0 {
+		return totalWindowTokens
+	}
+
+	totalEstimate := int64(projection.TotalEstimatedTokens)
+	tailEstimate := int64(projection.TailEstimatedTokens)
+	if tailEstimate > totalEstimate {
+		tailEstimate = totalEstimate
+	}
+
+	scaled := (int64(totalWindowTokens)*tailEstimate + totalEstimate/2) / totalEstimate
+	if scaled <= 0 {
+		scaled = 1
+	}
+	if scaled >= int64(totalWindowTokens) {
+		scaled = int64(totalWindowTokens - 1)
+	}
+	return int(scaled)
+}
+
+func hasClaudeCacheSignals(parsed *ParsedRequest) bool {
+	if parsed == nil {
+		return false
+	}
+	if hasTopLevelEphemeralCacheControl(parsed) {
+		return true
+	}
+	return countExplicitCacheBreakpoints(parsed) > 0
+}
+
+func hasTopLevelEphemeralCacheControl(parsed *ParsedRequest) bool {
+	if parsed == nil || len(parsed.Body) == 0 {
+		return false
+	}
+	cacheType := strings.TrimSpace(gjson.GetBytes(parsed.Body, "cache_control.type").String())
+	return strings.EqualFold(cacheType, "ephemeral")
+}
+
+func analyzeClaudeCacheProjection(parsed *ParsedRequest) claudeCacheProjection {
+	var projection claudeCacheProjection
+	if parsed == nil {
+		return projection
+	}
+
+	total := 0
+	lastBreakpointAt := -1
+
+	switch system := parsed.System.(type) {
+	case string:
+		total += claudeMaxMessageOverheadTokens + estimateClaudeTextTokens(system)
+	case []any:
+		for _, raw := range system {
+			block, ok := raw.(map[string]any)
+			if !ok {
+				total += claudeMaxUnknownContentTokens
+				continue
+			}
+			total += estimateClaudeBlockTokens(block)
+			if hasEphemeralCacheControl(block) {
+				lastBreakpointAt = total
+				projection.BreakpointCount++
+				projection.HasBreakpoint = true
+			}
+		}
+	}
+
+	for _, rawMsg := range parsed.Messages {
+		total += claudeMaxMessageOverheadTokens
+		msg, ok := rawMsg.(map[string]any)
+		if !ok {
+			total += claudeMaxUnknownContentTokens
+			continue
+		}
+		content, exists := msg["content"]
+		if !exists {
+			continue
+		}
+		msgTokens, msgLastBreak, msgBreakCount := estimateClaudeContentTokens(content)
+		total += msgTokens
+		if msgBreakCount > 0 {
+			lastBreakpointAt = total - msgTokens + msgLastBreak
+			projection.BreakpointCount += msgBreakCount
+			projection.HasBreakpoint = true
+		}
+	}
+
+	if total <= 0 {
+		total = 1
+	}
+	projection.TotalEstimatedTokens = total
+
+	if projection.HasBreakpoint && lastBreakpointAt >= 0 {
+		tail := total - lastBreakpointAt
+		if tail <= 0 {
+			tail = 1
+		}
+		projection.TailEstimatedTokens = tail
+		return projection
+	}
+
+	if hasTopLevelEphemeralCacheControl(parsed) {
+		tail := estimateLastUserMessageTokens(parsed)
+		if tail <= 0 {
+			tail = 1
+		}
+		projection.HasBreakpoint = true
+		projection.BreakpointCount = 1
+		projection.TailEstimatedTokens = tail
+	}
+	return projection
+}
+
+func countExplicitCacheBreakpoints(parsed *ParsedRequest) int {
+	if parsed == nil {
+		return 0
+	}
+	total := 0
+	if system, ok := parsed.System.([]any); ok {
+		for _, raw := range system {
+			if block, ok := raw.(map[string]any); ok && hasEphemeralCacheControl(block) {
+				total++
+			}
+		}
+	}
+	for _, rawMsg := range parsed.Messages {
+		msg, ok := rawMsg.(map[string]any)
+		if !ok {
+			continue
+		}
+		content, ok := msg["content"].([]any)
+		if !ok {
+			continue
+		}
+		for _, raw := range content {
+			if block, ok := raw.(map[string]any); ok && hasEphemeralCacheControl(block) {
+				total++
+			}
+		}
+	}
+	return total
+}
+
+func hasEphemeralCacheControl(block map[string]any) bool {
+	if block == nil {
+		return false
+	}
+	raw, ok := block["cache_control"]
+	if !ok || raw == nil {
+		return false
+	}
+	switch cc := raw.(type) {
+	case map[string]any:
+		cacheType, _ := cc["type"].(string)
+		return strings.EqualFold(strings.TrimSpace(cacheType), "ephemeral")
+	case map[string]string:
+		return strings.EqualFold(strings.TrimSpace(cc["type"]), "ephemeral")
+	default:
+		return false
+	}
+}
+
+func estimateClaudeContentTokens(content any) (tokens int, lastBreakAt int, breakpointCount int) {
+	switch value := content.(type) {
+	case string:
+		return estimateClaudeTextTokens(value), -1, 0
+	case []any:
+		total := 0
+		lastBreak := -1
+		breaks := 0
+		for _, raw := range value {
+			block, ok := raw.(map[string]any)
+			if !ok {
+				total += claudeMaxUnknownContentTokens
+				continue
+			}
+			total += estimateClaudeBlockTokens(block)
+			if hasEphemeralCacheControl(block) {
+				lastBreak = total
+				breaks++
+			}
+		}
+		return total, lastBreak, breaks
+	default:
+		return estimateStructuredTokens(value), -1, 0
+	}
+}
+
+func estimateClaudeBlockTokens(block map[string]any) int {
+	if block == nil {
+		return claudeMaxUnknownContentTokens
+	}
+	tokens := claudeMaxBlockOverheadTokens
+	blockType, _ := block["type"].(string)
+	switch blockType {
+	case "text":
+		if text, ok := block["text"].(string); ok {
+			tokens += estimateClaudeTextTokens(text)
+		}
+	case "tool_result":
+		if content, ok := block["content"]; ok {
+			nested, _, _ := estimateClaudeContentTokens(content)
+			tokens += nested
+		}
+	case "tool_use":
+		if name, ok := block["name"].(string); ok {
+			tokens += estimateClaudeTextTokens(name)
+		}
+		if input, ok := block["input"]; ok {
+			tokens += estimateStructuredTokens(input)
+		}
+	default:
+		if text, ok := block["text"].(string); ok {
+			tokens += estimateClaudeTextTokens(text)
+		} else if content, ok := block["content"]; ok {
+			nested, _, _ := estimateClaudeContentTokens(content)
+			tokens += nested
+		}
+	}
+	if tokens <= claudeMaxBlockOverheadTokens {
+		tokens += claudeMaxUnknownContentTokens
+	}
+	return tokens
+}
+
+func estimateLastUserMessageTokens(parsed *ParsedRequest) int {
+	if parsed == nil || len(parsed.Messages) == 0 {
+		return 0
+	}
+	for i := len(parsed.Messages) - 1; i >= 0; i-- {
+		msg, ok := parsed.Messages[i].(map[string]any)
+		if !ok {
+			continue
+		}
+		role, _ := msg["role"].(string)
+		if !strings.EqualFold(strings.TrimSpace(role), "user") {
+			continue
+		}
+		tokens, _, _ := estimateClaudeContentTokens(msg["content"])
+		return claudeMaxMessageOverheadTokens + tokens
+	}
+	return 0
+}
+
+func estimateStructuredTokens(v any) int {
+	if v == nil {
+		return 0
+	}
+	raw, err := json.Marshal(v)
+	if err != nil {
+		return claudeMaxUnknownContentTokens
+	}
+	return estimateClaudeTextTokens(string(raw))
+}
+
+func estimateClaudeTextTokens(text string) int {
+	if tokens, ok := estimateTokensByThirdPartyTokenizer(text); ok {
+		return tokens
+	}
+	return estimateClaudeTextTokensHeuristic(text)
+}
+
+func estimateClaudeTextTokensHeuristic(text string) int {
+	normalized := strings.Join(strings.Fields(strings.TrimSpace(text)), " ")
+	if normalized == "" {
+		return 0
+	}
+	asciiChars := 0
+	nonASCIIChars := 0
+	for _, r := range normalized {
+		if r <= 127 {
+			asciiChars++
+		} else {
+			nonASCIIChars++
+		}
+	}
+	tokens := nonASCIIChars
+	if asciiChars > 0 {
+		tokens += (asciiChars + 3) / 4
+	}
+	if words := len(strings.Fields(normalized)); words > tokens {
+		tokens = words
+	}
+	if tokens <= 0 {
+		return 1
+	}
+	return tokens
+}

backend/internal/service/claude_max_simulation_test.go

@@ -0,0 +1,156 @@
+package service
+
+import (
+	"strings"
+	"testing"
+)
+
+func TestProjectUsageToClaudeMax1H_Conservation(t *testing.T) {
+	usage := &ClaudeUsage{
+		InputTokens:              1200,
+		CacheCreationInputTokens: 0,
+		CacheCreation5mTokens:    0,
+		CacheCreation1hTokens:    0,
+	}
+	parsed := &ParsedRequest{
+		Model: "claude-sonnet-4-5",
+		Messages: []any{
+			map[string]any{
+				"role": "user",
+				"content": []any{
+					map[string]any{
+						"type":          "text",
+						"text":          strings.Repeat("cached context ", 200),
+						"cache_control": map[string]any{"type": "ephemeral"},
+					},
+					map[string]any{
+						"type": "text",
+						"text": "summarize quickly",
+					},
+				},
+			},
+		},
+	}
+
+	changed := projectUsageToClaudeMax1H(usage, parsed)
+	if !changed {
+		t.Fatalf("expected usage to be projected")
+	}
+
+	total := usage.InputTokens + usage.CacheCreation5mTokens + usage.CacheCreation1hTokens
+	if total != 1200 {
+		t.Fatalf("total tokens changed: got=%d want=%d", total, 1200)
+	}
+	if usage.CacheCreation5mTokens != 0 {
+		t.Fatalf("cache_creation_5m should be 0, got=%d", usage.CacheCreation5mTokens)
+	}
+	if usage.InputTokens <= 0 || usage.InputTokens >= 1200 {
+		t.Fatalf("simulated input out of range, got=%d", usage.InputTokens)
+	}
+	if usage.InputTokens > 100 {
+		t.Fatalf("simulated input should stay near cache breakpoint tail, got=%d", usage.InputTokens)
+	}
+	if usage.CacheCreation1hTokens <= 0 {
+		t.Fatalf("cache_creation_1h should be > 0, got=%d", usage.CacheCreation1hTokens)
+	}
+	if usage.CacheCreationInputTokens != usage.CacheCreation1hTokens {
+		t.Fatalf("cache_creation_input_tokens mismatch: got=%d want=%d", usage.CacheCreationInputTokens, usage.CacheCreation1hTokens)
+	}
+}
+
+func TestComputeClaudeMaxProjectedInputTokens_Deterministic(t *testing.T) {
+	parsed := &ParsedRequest{
+		Model: "claude-opus-4-5",
+		Messages: []any{
+			map[string]any{
+				"role": "user",
+				"content": []any{
+					map[string]any{
+						"type":          "text",
+						"text":          "build context",
+						"cache_control": map[string]any{"type": "ephemeral"},
+					},
+					map[string]any{
+						"type": "text",
+						"text": "what is failing now",
+					},
+				},
+			},
+		},
+	}
+
+	got1 := computeClaudeMaxProjectedInputTokens(4096, parsed)
+	got2 := computeClaudeMaxProjectedInputTokens(4096, parsed)
+	if got1 != got2 {
+		t.Fatalf("non-deterministic input tokens: %d != %d", got1, got2)
+	}
+}
+
+func TestShouldSimulateClaudeMaxUsage(t *testing.T) {
+	group := &Group{
+		Platform:                 PlatformAnthropic,
+		SimulateClaudeMaxEnabled: true,
+	}
+	input := &RecordUsageInput{
+		Result: &ForwardResult{
+			Model: "claude-sonnet-4-5",
+			Usage: ClaudeUsage{
+				InputTokens:              3000,
+				CacheCreationInputTokens: 0,
+				CacheCreation5mTokens:    0,
+				CacheCreation1hTokens:    0,
+			},
+		},
+		ParsedRequest: &ParsedRequest{
+			Messages: []any{
+				map[string]any{
+					"role": "user",
+					"content": []any{
+						map[string]any{
+							"type":          "text",
+							"text":          "cached",
+							"cache_control": map[string]any{"type": "ephemeral"},
+						},
+						map[string]any{
+							"type": "text",
+							"text": "tail",
+						},
+					},
+				},
+			},
+		},
+		APIKey: &APIKey{Group: group},
+	}
+
+	if !shouldSimulateClaudeMaxUsage(input) {
+		t.Fatalf("expected simulate=true for claude group with cache signal")
+	}
+
+	input.ParsedRequest = &ParsedRequest{
+		Messages: []any{
+			map[string]any{"role": "user", "content": "no cache signal"},
+		},
+	}
+	if shouldSimulateClaudeMaxUsage(input) {
+		t.Fatalf("expected simulate=false when request has no cache signal")
+	}
+
+	input.ParsedRequest = &ParsedRequest{
+		Messages: []any{
+			map[string]any{
+				"role": "user",
+				"content": []any{
+					map[string]any{
+						"type":          "text",
+						"text":          "cached",
+						"cache_control": map[string]any{"type": "ephemeral"},
+					},
+				},
+			},
+		},
+	}
+	input.Result.Usage.CacheCreationInputTokens = 100
+	if shouldSimulateClaudeMaxUsage(input) {
+		t.Fatalf("expected simulate=false when cache creation already exists")
+	}
+}

backend/internal/service/claude_tokenizer.go

@@ -0,0 +1,41 @@
+package service
+
+import (
+	"sync"
+
+	tiktoken "github.com/pkoukk/tiktoken-go"
+	tiktokenloader "github.com/pkoukk/tiktoken-go-loader"
+)
+
+var (
+	claudeTokenizerOnce sync.Once
+	claudeTokenizer     *tiktoken.Tiktoken
+)
+
+func getClaudeTokenizer() *tiktoken.Tiktoken {
+	claudeTokenizerOnce.Do(func() {
+		// Use offline loader to avoid runtime dictionary download.
+		tiktoken.SetBpeLoader(tiktokenloader.NewOfflineLoader())
+		// Use a high-capacity tokenizer as the default approximation for Claude payloads.
+		enc, err := tiktoken.GetEncoding(tiktoken.MODEL_O200K_BASE)
+		if err != nil {
+			enc, err = tiktoken.GetEncoding(tiktoken.MODEL_CL100K_BASE)
+		}
+		if err == nil {
+			claudeTokenizer = enc
+		}
+	})
+	return claudeTokenizer
+}
+
+func estimateTokensByThirdPartyTokenizer(text string) (int, bool) {
+	enc := getClaudeTokenizer()
+	if enc == nil {
+		return 0, false
+	}
+	tokens := len(enc.EncodeOrdinary(text))
+	if tokens <= 0 {
+		return 0, false
+	}
+	return tokens, true
+}

backend/internal/service/concurrency_service.go

@@ -343,8 +343,9 @@ func (s *ConcurrencyService) StartSlotCleanupWorker(accountRepo AccountRepositor
 	}()
 }
 
-// GetAccountConcurrencyBatch gets current concurrency counts for multiple accounts
-// Returns a map of accountID -> current concurrency count
+// GetAccountConcurrencyBatch gets current concurrency counts for multiple accounts.
+// Uses a detached context with timeout to prevent HTTP request cancellation from
+// causing the entire batch to fail (which would show all concurrency as 0).
 func (s *ConcurrencyService) GetAccountConcurrencyBatch(ctx context.Context, accountIDs []int64) (map[int64]int, error) {
 	if len(accountIDs) == 0 {
 		return map[int64]int{}, nil
@@ -356,5 +357,11 @@ func (s *ConcurrencyService) GetAccountConcurrencyBatch(ctx context.Context, acc
 		}
 		return result, nil
 	}
-	return s.cache.GetAccountConcurrencyBatch(ctx, accountIDs)
+
+	// Use a detached context so that a cancelled HTTP request doesn't cause
+	// the Redis pipeline to fail and return all-zero concurrency counts.
+	redisCtx, cancel := context.WithTimeout(context.Background(), 3*time.Second)
+	defer cancel()
+
+	return s.cache.GetAccountConcurrencyBatch(redisCtx, accountIDs)
 }

backend/internal/service/dashboard_aggregation_service.go

@@ -35,7 +35,6 @@ type DashboardAggregationRepository interface {
 	UpdateAggregationWatermark(ctx context.Context, aggregatedAt time.Time) error
 	CleanupAggregates(ctx context.Context, hourlyCutoff, dailyCutoff time.Time) error
 	CleanupUsageLogs(ctx context.Context, cutoff time.Time) error
-	CleanupUsageBillingDedup(ctx context.Context, cutoff time.Time) error
 	EnsureUsageLogsPartitions(ctx context.Context, now time.Time) error
 }
 
@@ -297,7 +296,6 @@ func (s *DashboardAggregationService) maybeCleanupRetention(ctx context.Context,
 	hourlyCutoff := now.AddDate(0, 0, -s.cfg.Retention.HourlyDays)
 	dailyCutoff := now.AddDate(0, 0, -s.cfg.Retention.DailyDays)
 	usageCutoff := now.AddDate(0, 0, -s.cfg.Retention.UsageLogsDays)
-	dedupCutoff := now.AddDate(0, 0, -s.cfg.Retention.UsageBillingDedupDays)
 
 	aggErr := s.repo.CleanupAggregates(ctx, hourlyCutoff, dailyCutoff)
 	if aggErr != nil {
@@ -307,11 +305,7 @@ func (s *DashboardAggregationService) maybeCleanupRetention(ctx context.Context,
 	if usageErr != nil {
 		logger.LegacyPrintf("service.dashboard_aggregation", "[DashboardAggregation] usage_logs 保留清理失败: %v", usageErr)
 	}
-	dedupErr := s.repo.CleanupUsageBillingDedup(ctx, dedupCutoff)
-	if dedupErr != nil {
-		logger.LegacyPrintf("service.dashboard_aggregation", "[DashboardAggregation] usage_billing_dedup 保留清理失败: %v", dedupErr)
-	}
-	if aggErr == nil && usageErr == nil && dedupErr == nil {
+	if aggErr == nil && usageErr == nil {
 		s.lastRetentionCleanup.Store(now)
 	}
 }

backend/internal/service/dashboard_aggregation_service_test.go

@@ -12,18 +12,12 @@ import (
 
 type dashboardAggregationRepoTestStub struct {
 	aggregateCalls       int
-	recomputeCalls       int
-	cleanupUsageCalls    int
-	cleanupDedupCalls    int
-	ensurePartitionCalls int
 	lastStart            time.Time
 	lastEnd              time.Time
 	watermark            time.Time
 	aggregateErr         error
 	cleanupAggregatesErr error
 	cleanupUsageErr      error
-	cleanupDedupErr      error
-	ensurePartitionErr   error
 }
 
 func (s *dashboardAggregationRepoTestStub) AggregateRange(ctx context.Context, start, end time.Time) error {
@@ -34,7 +28,6 @@ func (s *dashboardAggregationRepoTestStub) AggregateRange(ctx context.Context, s
 }
 
 func (s *dashboardAggregationRepoTestStub) RecomputeRange(ctx context.Context, start, end time.Time) error {
-	s.recomputeCalls++
 	return s.AggregateRange(ctx, start, end)
 }
 
@@ -51,18 +44,11 @@ func (s *dashboardAggregationRepoTestStub) CleanupAggregates(ctx context.Context
 }
 
 func (s *dashboardAggregationRepoTestStub) CleanupUsageLogs(ctx context.Context, cutoff time.Time) error {
-	s.cleanupUsageCalls++
 	return s.cleanupUsageErr
 }
 
-func (s *dashboardAggregationRepoTestStub) CleanupUsageBillingDedup(ctx context.Context, cutoff time.Time) error {
-	s.cleanupDedupCalls++
-	return s.cleanupDedupErr
-}
-
 func (s *dashboardAggregationRepoTestStub) EnsureUsageLogsPartitions(ctx context.Context, now time.Time) error {
-	s.ensurePartitionCalls++
-	return s.ensurePartitionErr
+	return nil
 }
 
 func TestDashboardAggregationService_RunScheduledAggregation_EpochUsesRetentionStart(t *testing.T) {
@@ -104,50 +90,6 @@ func TestDashboardAggregationService_CleanupRetentionFailure_DoesNotRecord(t *te
 	svc.maybeCleanupRetention(context.Background(), time.Now().UTC())
 
 	require.Nil(t, svc.lastRetentionCleanup.Load())
-	require.Equal(t, 1, repo.cleanupUsageCalls)
-	require.Equal(t, 1, repo.cleanupDedupCalls)
-}
-
-func TestDashboardAggregationService_CleanupDedupFailure_DoesNotRecord(t *testing.T) {
-	repo := &dashboardAggregationRepoTestStub{cleanupDedupErr: errors.New("dedup cleanup failed")}
-	svc := &DashboardAggregationService{
-		repo: repo,
-		cfg: config.DashboardAggregationConfig{
-			Retention: config.DashboardAggregationRetentionConfig{
-				UsageLogsDays: 1,
-				HourlyDays:    1,
-				DailyDays:     1,
-			},
-		},
-	}
-
-	svc.maybeCleanupRetention(context.Background(), time.Now().UTC())
-
-	require.Nil(t, svc.lastRetentionCleanup.Load())
-	require.Equal(t, 1, repo.cleanupDedupCalls)
-}
-
-func TestDashboardAggregationService_PartitionFailure_DoesNotAggregate(t *testing.T) {
-	repo := &dashboardAggregationRepoTestStub{ensurePartitionErr: errors.New("partition failed")}
-	svc := &DashboardAggregationService{
-		repo: repo,
-		cfg: config.DashboardAggregationConfig{
-			Enabled:         true,
-			IntervalSeconds: 60,
-			LookbackSeconds: 120,
-			Retention: config.DashboardAggregationRetentionConfig{
-				UsageLogsDays:         1,
-				UsageBillingDedupDays: 2,
-				HourlyDays:            1,
-				DailyDays:             1,
-			},
-		},
-	}
-
-	svc.runScheduledAggregation()
-
-	require.Equal(t, 1, repo.ensurePartitionCalls)
-	require.Equal(t, 1, repo.aggregateCalls)
 }
 
 func TestDashboardAggregationService_TriggerBackfill_TooLarge(t *testing.T) {

backend/internal/service/dashboard_service.go

@@ -327,14 +327,6 @@ func (s *DashboardService) GetUserUsageTrend(ctx context.Context, startTime, end
 	return trend, nil
 }
 
-func (s *DashboardService) GetUserSpendingRanking(ctx context.Context, startTime, endTime time.Time, limit int) (*usagestats.UserSpendingRankingResponse, error) {
-	ranking, err := s.usageRepo.GetUserSpendingRanking(ctx, startTime, endTime, limit)
-	if err != nil {
-		return nil, fmt.Errorf("get user spending ranking: %w", err)
-	}
-	return ranking, nil
-}
-
 func (s *DashboardService) GetBatchUserUsageStats(ctx context.Context, userIDs []int64, startTime, endTime time.Time) (map[int64]*usagestats.BatchUserUsageStats, error) {
 	stats, err := s.usageRepo.GetBatchUserUsageStats(ctx, userIDs, startTime, endTime)
 	if err != nil {

backend/internal/service/dashboard_service_test.go

@@ -124,10 +124,6 @@ func (s *dashboardAggregationRepoStub) CleanupUsageLogs(ctx context.Context, cut
 	return nil
 }
 
-func (s *dashboardAggregationRepoStub) CleanupUsageBillingDedup(ctx context.Context, cutoff time.Time) error {
-	return nil
-}
-
 func (s *dashboardAggregationRepoStub) EnsureUsageLogsPartitions(ctx context.Context, now time.Time) error {
 	return nil
 }

backend/internal/service/domain_constants.go

@@ -29,12 +29,10 @@ const (
 
 // Account type constants
 const (
-	AccountTypeOAuth         = domain.AccountTypeOAuth         // OAuth类型账号（full scope: profile + inference）
-	AccountTypeSetupToken    = domain.AccountTypeSetupToken    // Setup Token类型账号（inference only scope）
-	AccountTypeAPIKey        = domain.AccountTypeAPIKey        // API Key类型账号
-	AccountTypeUpstream      = domain.AccountTypeUpstream      // 上游透传类型账号（通过 Base URL + API Key 连接上游）
-	AccountTypeBedrock       = domain.AccountTypeBedrock       // AWS Bedrock 类型账号（通过 SigV4 签名连接 Bedrock）
-	AccountTypeBedrockAPIKey = domain.AccountTypeBedrockAPIKey // AWS Bedrock API Key 类型账号（通过 Bearer Token 连接 Bedrock）
+	AccountTypeOAuth      = domain.AccountTypeOAuth      // OAuth类型账号（full scope: profile + inference）
+	AccountTypeSetupToken = domain.AccountTypeSetupToken // Setup Token类型账号（inference only scope）
+	AccountTypeAPIKey     = domain.AccountTypeAPIKey     // API Key类型账号
+	AccountTypeUpstream   = domain.AccountTypeUpstream   // 上游透传类型账号（通过 Base URL + API Key 连接上游）
 )
 
 // Redeem type constants

backend/internal/service/error_passthrough_runtime_test.go

@@ -220,7 +220,7 @@ func TestApplyErrorPassthroughRule_SkipMonitoringSetsContextKey(t *testing.T) {
 	v, exists := c.Get(OpsSkipPassthroughKey)
 	assert.True(t, exists, "OpsSkipPassthroughKey should be set when skip_monitoring=true")
 	boolVal, ok := v.(bool)
-	assert.True(t, ok, "value should be bool")
+	assert.True(t, ok, "value should be a bool")
 	assert.True(t, boolVal)
 }
 

backend/internal/service/gateway_anthropic_apikey_passthrough_test.go

@@ -136,18 +136,16 @@ func TestGatewayService_AnthropicAPIKeyPassthrough_ForwardStreamPreservesBodyAnd
 		},
 	}
 
-	cfg := &config.Config{
-		Gateway: config.GatewayConfig{
-			MaxLineSize: defaultMaxLineSize,
-		},
-	}
 	svc := &GatewayService{
-		cfg:                  cfg,
-		responseHeaderFilter: compileResponseHeaderFilter(cfg),
-		httpUpstream:         upstream,
-		rateLimitService:     &RateLimitService{},
-		deferredService:      &DeferredService{},
-		billingCacheService:  nil,
+		cfg: &config.Config{
+			Gateway: config.GatewayConfig{
+				MaxLineSize: defaultMaxLineSize,
+			},
+		},
+		httpUpstream:        upstream,
+		rateLimitService:    &RateLimitService{},
+		deferredService:     &DeferredService{},
+		billingCacheService: nil,
 	}
 
 	account := &Account{
@@ -223,16 +221,14 @@ func TestGatewayService_AnthropicAPIKeyPassthrough_ForwardCountTokensPreservesBo
 		},
 	}
 
-	cfg := &config.Config{
-		Gateway: config.GatewayConfig{
-			MaxLineSize: defaultMaxLineSize,
-		},
-	}
 	svc := &GatewayService{
-		cfg:                  cfg,
-		responseHeaderFilter: compileResponseHeaderFilter(cfg),
-		httpUpstream:         upstream,
-		rateLimitService:     &RateLimitService{},
+		cfg: &config.Config{
+			Gateway: config.GatewayConfig{
+				MaxLineSize: defaultMaxLineSize,
+			},
+		},
+		httpUpstream:     upstream,
+		rateLimitService: &RateLimitService{},
 	}
 
 	account := &Account{
@@ -731,39 +727,6 @@ func TestGatewayService_AnthropicAPIKeyPassthrough_StreamingStillCollectsUsageAf
 	require.Equal(t, 5, result.usage.OutputTokens)
 }
 
-func TestGatewayService_AnthropicAPIKeyPassthrough_MissingTerminalEventReturnsError(t *testing.T) {
-	gin.SetMode(gin.TestMode)
-
-	rec := httptest.NewRecorder()
-	c, _ := gin.CreateTestContext(rec)
-	c.Request = httptest.NewRequest(http.MethodPost, "/v1/messages", nil)
-
-	svc := &GatewayService{
-		cfg: &config.Config{
-			Gateway: config.GatewayConfig{
-				MaxLineSize: defaultMaxLineSize,
-			},
-		},
-		rateLimitService: &RateLimitService{},
-	}
-
-	resp := &http.Response{
-		StatusCode: http.StatusOK,
-		Header:     http.Header{"Content-Type": []string{"text/event-stream"}},
-		Body: io.NopCloser(strings.NewReader(strings.Join([]string{
-			`data: {"type":"message_start","message":{"usage":{"input_tokens":11}}}`,
-			"",
-			`data: {"type":"message_delta","usage":{"output_tokens":5}}`,
-			"",
-		}, "\n"))),
-	}
-
-	result, err := svc.handleStreamingResponseAnthropicAPIKeyPassthrough(context.Background(), resp, c, &Account{ID: 1}, time.Now(), "claude-3-7-sonnet-20250219")
-	require.Error(t, err)
-	require.Contains(t, err.Error(), "missing terminal event")
-	require.NotNil(t, result)
-}
-
 func TestGatewayService_AnthropicAPIKeyPassthrough_ForwardDirect_NonStreamingSuccess(t *testing.T) {
 	gin.SetMode(gin.TestMode)
 	rec := httptest.NewRecorder()
@@ -1111,8 +1074,7 @@ func TestGatewayService_AnthropicAPIKeyPassthrough_StreamingTimeoutAfterClientDi
 	_ = pr.Close()
 	<-done
 
-	require.Error(t, err)
-	require.Contains(t, err.Error(), "stream usage incomplete after timeout")
+	require.NoError(t, err)
 	require.NotNil(t, result)
 	require.True(t, result.clientDisconnect)
 	require.Equal(t, 9, result.usage.InputTokens)
@@ -1141,8 +1103,7 @@ func TestGatewayService_AnthropicAPIKeyPassthrough_StreamingContextCanceled(t *t
 	}
 
 	result, err := svc.handleStreamingResponseAnthropicAPIKeyPassthrough(context.Background(), resp, c, &Account{ID: 3}, time.Now(), "claude-3-7-sonnet-20250219")
-	require.Error(t, err)
-	require.Contains(t, err.Error(), "stream usage incomplete")
+	require.NoError(t, err)
 	require.NotNil(t, result)
 	require.True(t, result.clientDisconnect)
 }
@@ -1172,8 +1133,7 @@ func TestGatewayService_AnthropicAPIKeyPassthrough_StreamingUpstreamReadErrorAft
 	}
 
 	result, err := svc.handleStreamingResponseAnthropicAPIKeyPassthrough(context.Background(), resp, c, &Account{ID: 4}, time.Now(), "claude-3-7-sonnet-20250219")
-	require.Error(t, err)
-	require.Contains(t, err.Error(), "stream usage incomplete after disconnect")
+	require.NoError(t, err)
 	require.NotNil(t, result)
 	require.True(t, result.clientDisconnect)
 	require.Equal(t, 8, result.usage.InputTokens)

backend/internal/service/gateway_claude_max_response_helpers.go

@@ -0,0 +1,196 @@
+package service
+
+import (
+	"context"
+	"encoding/json"
+
+	"github.com/Wei-Shaw/sub2api/internal/pkg/antigravity"
+	"github.com/gin-gonic/gin"
+	"github.com/tidwall/sjson"
+)
+
+type claudeMaxResponseRewriteContext struct {
+	Parsed *ParsedRequest
+	Group  *Group
+}
+
+type claudeMaxResponseRewriteContextKeyType struct{}
+
+var claudeMaxResponseRewriteContextKey = claudeMaxResponseRewriteContextKeyType{}
+
+func withClaudeMaxResponseRewriteContext(ctx context.Context, c *gin.Context, parsed *ParsedRequest) context.Context {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	value := claudeMaxResponseRewriteContext{
+		Parsed: parsed,
+		Group:  claudeMaxGroupFromGinContext(c),
+	}
+	return context.WithValue(ctx, claudeMaxResponseRewriteContextKey, value)
+}
+
+func claudeMaxResponseRewriteContextFromContext(ctx context.Context) claudeMaxResponseRewriteContext {
+	if ctx == nil {
+		return claudeMaxResponseRewriteContext{}
+	}
+	value, _ := ctx.Value(claudeMaxResponseRewriteContextKey).(claudeMaxResponseRewriteContext)
+	return value
+}
+
+func claudeMaxGroupFromGinContext(c *gin.Context) *Group {
+	if c == nil {
+		return nil
+	}
+	raw, exists := c.Get("api_key")
+	if !exists {
+		return nil
+	}
+	apiKey, ok := raw.(*APIKey)
+	if !ok || apiKey == nil {
+		return nil
+	}
+	return apiKey.Group
+}
+
+func parsedRequestFromGinContext(c *gin.Context) *ParsedRequest {
+	if c == nil {
+		return nil
+	}
+	raw, exists := c.Get("parsed_request")
+	if !exists {
+		return nil
+	}
+	parsed, _ := raw.(*ParsedRequest)
+	return parsed
+}
+
+func applyClaudeMaxSimulationToUsage(ctx context.Context, usage *ClaudeUsage, model string, accountID int64) claudeMaxCacheBillingOutcome {
+	var out claudeMaxCacheBillingOutcome
+	if usage == nil {
+		return out
+	}
+	rewriteCtx := claudeMaxResponseRewriteContextFromContext(ctx)
+	return applyClaudeMaxCacheBillingPolicyToUsage(usage, rewriteCtx.Parsed, rewriteCtx.Group, model, accountID)
+}
+
+func applyClaudeMaxSimulationToUsageJSONMap(ctx context.Context, usageObj map[string]any, model string, accountID int64) claudeMaxCacheBillingOutcome {
+	var out claudeMaxCacheBillingOutcome
+	if usageObj == nil {
+		return out
+	}
+	usage := claudeUsageFromJSONMap(usageObj)
+	out = applyClaudeMaxSimulationToUsage(ctx, &usage, model, accountID)
+	if out.Simulated {
+		rewriteClaudeUsageJSONMap(usageObj, usage)
+	}
+	return out
+}
+
+func rewriteClaudeUsageJSONBytes(body []byte, usage ClaudeUsage) []byte {
+	updated := body
+	var err error
+
+	updated, err = sjson.SetBytes(updated, "usage.input_tokens", usage.InputTokens)
+	if err != nil {
+		return body
+	}
+	updated, err = sjson.SetBytes(updated, "usage.cache_creation_input_tokens", usage.CacheCreationInputTokens)
+	if err != nil {
+		return body
+	}
+	updated, err = sjson.SetBytes(updated, "usage.cache_creation.ephemeral_5m_input_tokens", usage.CacheCreation5mTokens)
+	if err != nil {
+		return body
+	}
+	updated, err = sjson.SetBytes(updated, "usage.cache_creation.ephemeral_1h_input_tokens", usage.CacheCreation1hTokens)
+	if err != nil {
+		return body
+	}
+	return updated
+}
+
+func claudeUsageFromJSONMap(usageObj map[string]any) ClaudeUsage {
+	var usage ClaudeUsage
+	if usageObj == nil {
+		return usage
+	}
+
+	usage.InputTokens = usageIntFromAny(usageObj["input_tokens"])
+	usage.OutputTokens = usageIntFromAny(usageObj["output_tokens"])
+	usage.CacheCreationInputTokens = usageIntFromAny(usageObj["cache_creation_input_tokens"])
+	usage.CacheReadInputTokens = usageIntFromAny(usageObj["cache_read_input_tokens"])
+
+	if ccObj, ok := usageObj["cache_creation"].(map[string]any); ok {
+		usage.CacheCreation5mTokens = usageIntFromAny(ccObj["ephemeral_5m_input_tokens"])
+		usage.CacheCreation1hTokens = usageIntFromAny(ccObj["ephemeral_1h_input_tokens"])
+	}
+	return usage
+}
+
+func rewriteClaudeUsageJSONMap(usageObj map[string]any, usage ClaudeUsage) {
+	if usageObj == nil {
+		return
+	}
+	usageObj["input_tokens"] = usage.InputTokens
+	usageObj["cache_creation_input_tokens"] = usage.CacheCreationInputTokens
+
+	ccObj, _ := usageObj["cache_creation"].(map[string]any)
+	if ccObj == nil {
+		ccObj = make(map[string]any, 2)
+		usageObj["cache_creation"] = ccObj
+	}
+	ccObj["ephemeral_5m_input_tokens"] = usage.CacheCreation5mTokens
+	ccObj["ephemeral_1h_input_tokens"] = usage.CacheCreation1hTokens
+}
+
+func usageIntFromAny(v any) int {
+	switch value := v.(type) {
+	case int:
+		return value
+	case int64:
+		return int(value)
+	case float64:
+		return int(value)
+	case json.Number:
+		if n, err := value.Int64(); err == nil {
+			return int(n)
+		}
+	}
+	return 0
+}
+
+// setupClaudeMaxStreamingHook 为 Antigravity 流式路径设置 SSE usage 改写 hook。
+func setupClaudeMaxStreamingHook(c *gin.Context, processor *antigravity.StreamingProcessor, originalModel string, accountID int64) {
+	group := claudeMaxGroupFromGinContext(c)
+	parsed := parsedRequestFromGinContext(c)
+	if !shouldApplyClaudeMaxBillingRulesForUsage(group, originalModel, parsed) {
+		return
+	}
+	processor.SetUsageMapHook(func(usageMap map[string]any) {
+		svcUsage := claudeUsageFromJSONMap(usageMap)
+		outcome := applyClaudeMaxCacheBillingPolicyToUsage(&svcUsage, parsed, group, originalModel, accountID)
+		if outcome.Simulated {
+			rewriteClaudeUsageJSONMap(usageMap, svcUsage)
+		}
+	})
+}
+
+// applyClaudeMaxNonStreamingRewrite 为 Antigravity 非流式路径改写响应体中的 usage。
+func applyClaudeMaxNonStreamingRewrite(c *gin.Context, claudeResp []byte, agUsage *antigravity.ClaudeUsage, originalModel string, accountID int64) []byte {
+	group := claudeMaxGroupFromGinContext(c)
+	parsed := parsedRequestFromGinContext(c)
+	if !shouldApplyClaudeMaxBillingRulesForUsage(group, originalModel, parsed) {
+		return claudeResp
+	}
+	svcUsage := &ClaudeUsage{
+		InputTokens:              agUsage.InputTokens,
+		OutputTokens:             agUsage.OutputTokens,
+		CacheCreationInputTokens: agUsage.CacheCreationInputTokens,
+		CacheReadInputTokens:     agUsage.CacheReadInputTokens,
+	}
+	outcome := applyClaudeMaxCacheBillingPolicyToUsage(svcUsage, parsed, group, originalModel, accountID)
+	if outcome.Simulated {
+		return rewriteClaudeUsageJSONBytes(claudeResp, *svcUsage)
+	}
+	return claudeResp
+}

backend/internal/service/gateway_record_usage_claude_max_test.go

@@ -0,0 +1,199 @@
+package service
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/stretchr/testify/require"
+)
+
+type usageLogRepoRecordUsageStub struct {
+	UsageLogRepository
+
+	last     *UsageLog
+	inserted bool
+	err      error
+}
+
+func (s *usageLogRepoRecordUsageStub) Create(_ context.Context, log *UsageLog) (bool, error) {
+	copied := *log
+	s.last = &copied
+	return s.inserted, s.err
+}
+
+func newGatewayServiceForRecordUsageTest(repo UsageLogRepository) *GatewayService {
+	return &GatewayService{
+		usageLogRepo:    repo,
+		billingService:  NewBillingService(&config.Config{}, nil),
+		cfg:             &config.Config{RunMode: config.RunModeSimple},
+		deferredService: &DeferredService{},
+	}
+}
+
+func TestRecordUsage_SimulateClaudeMaxEnabled_ProjectsUsageAndSkipsTTLOverride(t *testing.T) {
+	repo := &usageLogRepoRecordUsageStub{inserted: true}
+	svc := newGatewayServiceForRecordUsageTest(repo)
+
+	groupID := int64(11)
+	input := &RecordUsageInput{
+		Result: &ForwardResult{
+			RequestID: "req-sim-1",
+			Model:     "claude-sonnet-4",
+			Duration:  time.Second,
+			Usage: ClaudeUsage{
+				InputTokens: 160,
+			},
+		},
+		ParsedRequest: &ParsedRequest{
+			Model: "claude-sonnet-4",
+			Messages: []any{
+				map[string]any{
+					"role": "user",
+					"content": []any{
+						map[string]any{
+							"type":          "text",
+							"text":          "long cached context for prior turns",
+							"cache_control": map[string]any{"type": "ephemeral"},
+						},
+						map[string]any{
+							"type": "text",
+							"text": "please summarize the logs and provide root cause analysis",
+						},
+					},
+				},
+			},
+		},
+		APIKey: &APIKey{
+			ID:      1,
+			GroupID: &groupID,
+			Group: &Group{
+				ID:                       groupID,
+				Platform:                 PlatformAnthropic,
+				RateMultiplier:           1,
+				SimulateClaudeMaxEnabled: true,
+			},
+		},
+		User: &User{ID: 2},
+		Account: &Account{
+			ID:       3,
+			Platform: PlatformAnthropic,
+			Type:     AccountTypeOAuth,
+			Extra: map[string]any{
+				"cache_ttl_override_enabled": true,
+				"cache_ttl_override_target":  "5m",
+			},
+		},
+	}
+
+	err := svc.RecordUsage(context.Background(), input)
+	require.NoError(t, err)
+	require.NotNil(t, repo.last)
+
+	log := repo.last
+	require.Equal(t, 80, log.InputTokens)
+	require.Equal(t, 80, log.CacheCreationTokens)
+	require.Equal(t, 0, log.CacheCreation5mTokens)
+	require.Equal(t, 80, log.CacheCreation1hTokens)
+	require.False(t, log.CacheTTLOverridden, "simulate outcome should skip account ttl override")
+}
+
+func TestRecordUsage_SimulateClaudeMaxDisabled_AppliesTTLOverride(t *testing.T) {
+	repo := &usageLogRepoRecordUsageStub{inserted: true}
+	svc := newGatewayServiceForRecordUsageTest(repo)
+
+	groupID := int64(12)
+	input := &RecordUsageInput{
+		Result: &ForwardResult{
+			RequestID: "req-sim-2",
+			Model:     "claude-sonnet-4",
+			Duration:  time.Second,
+			Usage: ClaudeUsage{
+				InputTokens:              40,
+				CacheCreationInputTokens: 120,
+				CacheCreation1hTokens:    120,
+			},
+		},
+		APIKey: &APIKey{
+			ID:      2,
+			GroupID: &groupID,
+			Group: &Group{
+				ID:                       groupID,
+				Platform:                 PlatformAnthropic,
+				RateMultiplier:           1,
+				SimulateClaudeMaxEnabled: false,
+			},
+		},
+		User: &User{ID: 3},
+		Account: &Account{
+			ID:       4,
+			Platform: PlatformAnthropic,
+			Type:     AccountTypeOAuth,
+			Extra: map[string]any{
+				"cache_ttl_override_enabled": true,
+				"cache_ttl_override_target":  "5m",
+			},
+		},
+	}
+
+	err := svc.RecordUsage(context.Background(), input)
+	require.NoError(t, err)
+	require.NotNil(t, repo.last)
+
+	log := repo.last
+	require.Equal(t, 120, log.CacheCreationTokens)
+	require.Equal(t, 120, log.CacheCreation5mTokens)
+	require.Equal(t, 0, log.CacheCreation1hTokens)
+	require.True(t, log.CacheTTLOverridden)
+}
+
+func TestRecordUsage_SimulateClaudeMaxEnabled_ExistingCacheCreationBypassesSimulation(t *testing.T) {
+	repo := &usageLogRepoRecordUsageStub{inserted: true}
+	svc := newGatewayServiceForRecordUsageTest(repo)
+
+	groupID := int64(13)
+	input := &RecordUsageInput{
+		Result: &ForwardResult{
+			RequestID: "req-sim-3",
+			Model:     "claude-sonnet-4",
+			Duration:  time.Second,
+			Usage: ClaudeUsage{
+				InputTokens:              20,
+				CacheCreationInputTokens: 120,
+				CacheCreation5mTokens:    120,
+			},
+		},
+		APIKey: &APIKey{
+			ID:      3,
+			GroupID: &groupID,
+			Group: &Group{
+				ID:                       groupID,
+				Platform:                 PlatformAnthropic,
+				RateMultiplier:           1,
+				SimulateClaudeMaxEnabled: true,
+			},
+		},
+		User: &User{ID: 4},
+		Account: &Account{
+			ID:       5,
+			Platform: PlatformAnthropic,
+			Type:     AccountTypeOAuth,
+			Extra: map[string]any{
+				"cache_ttl_override_enabled": true,
+				"cache_ttl_override_target":  "5m",
+			},
+		},
+	}
+
+	err := svc.RecordUsage(context.Background(), input)
+	require.NoError(t, err)
+	require.NotNil(t, repo.last)
+
+	log := repo.last
+	require.Equal(t, 20, log.InputTokens)
+	require.Equal(t, 120, log.CacheCreation5mTokens)
+	require.Equal(t, 0, log.CacheCreation1hTokens)
+	require.Equal(t, 120, log.CacheCreationTokens)
+	require.False(t, log.CacheTTLOverridden, "existing cache_creation with SimulateClaudeMax enabled should skip account ttl override")
+}

backend/internal/service/gateway_record_usage_test.go

@@ -1,371 +0,0 @@
-//go:build unit
-
-package service
-
-import (
-	"context"
-	"errors"
-	"strings"
-	"testing"
-	"time"
-
-	"github.com/Wei-Shaw/sub2api/internal/config"
-	"github.com/Wei-Shaw/sub2api/internal/pkg/ctxkey"
-	"github.com/stretchr/testify/require"
-)
-
-func newGatewayRecordUsageServiceForTest(usageRepo UsageLogRepository, userRepo UserRepository, subRepo UserSubscriptionRepository) *GatewayService {
-	cfg := &config.Config{}
-	cfg.Default.RateMultiplier = 1.1
-	return NewGatewayService(
-		nil,
-		nil,
-		usageRepo,
-		nil,
-		userRepo,
-		subRepo,
-		nil,
-		nil,
-		cfg,
-		nil,
-		nil,
-		NewBillingService(cfg, nil),
-		nil,
-		&BillingCacheService{},
-		nil,
-		nil,
-		&DeferredService{},
-		nil,
-		nil,
-		nil,
-		nil,
-		nil,
-	)
-}
-
-func newGatewayRecordUsageServiceWithBillingRepoForTest(usageRepo UsageLogRepository, billingRepo UsageBillingRepository, userRepo UserRepository, subRepo UserSubscriptionRepository) *GatewayService {
-	svc := newGatewayRecordUsageServiceForTest(usageRepo, userRepo, subRepo)
-	svc.usageBillingRepo = billingRepo
-	return svc
-}
-
-type openAIRecordUsageBestEffortLogRepoStub struct {
-	UsageLogRepository
-
-	bestEffortErr   error
-	createErr       error
-	bestEffortCalls int
-	createCalls     int
-	lastLog         *UsageLog
-	lastCtxErr      error
-}
-
-func (s *openAIRecordUsageBestEffortLogRepoStub) CreateBestEffort(ctx context.Context, log *UsageLog) error {
-	s.bestEffortCalls++
-	s.lastLog = log
-	s.lastCtxErr = ctx.Err()
-	return s.bestEffortErr
-}
-
-func (s *openAIRecordUsageBestEffortLogRepoStub) Create(ctx context.Context, log *UsageLog) (bool, error) {
-	s.createCalls++
-	s.lastLog = log
-	s.lastCtxErr = ctx.Err()
-	return false, s.createErr
-}
-
-func TestGatewayServiceRecordUsage_BillingUsesDetachedContext(t *testing.T) {
-	usageRepo := &openAIRecordUsageLogRepoStub{inserted: false, err: context.DeadlineExceeded}
-	userRepo := &openAIRecordUsageUserRepoStub{}
-	subRepo := &openAIRecordUsageSubRepoStub{}
-	quotaSvc := &openAIRecordUsageAPIKeyQuotaStub{}
-	svc := newGatewayRecordUsageServiceForTest(usageRepo, userRepo, subRepo)
-
-	reqCtx, cancel := context.WithCancel(context.Background())
-	cancel()
-
-	err := svc.RecordUsage(reqCtx, &RecordUsageInput{
-		Result: &ForwardResult{
-			RequestID: "gateway_detached_ctx",
-			Usage: ClaudeUsage{
-				InputTokens:  10,
-				OutputTokens: 6,
-			},
-			Model:    "claude-sonnet-4",
-			Duration: time.Second,
-		},
-		APIKey: &APIKey{
-			ID:    501,
-			Quota: 100,
-		},
-		User:          &User{ID: 601},
-		Account:       &Account{ID: 701},
-		APIKeyService: quotaSvc,
-	})
-
-	require.NoError(t, err)
-	require.Equal(t, 1, usageRepo.calls)
-	require.Equal(t, 1, userRepo.deductCalls)
-	require.NoError(t, userRepo.lastCtxErr)
-	require.Equal(t, 1, quotaSvc.quotaCalls)
-	require.NoError(t, quotaSvc.lastQuotaCtxErr)
-}
-
-func TestGatewayServiceRecordUsage_BillingFingerprintIncludesRequestPayloadHash(t *testing.T) {
-	usageRepo := &openAIRecordUsageLogRepoStub{}
-	billingRepo := &openAIRecordUsageBillingRepoStub{result: &UsageBillingApplyResult{Applied: true}}
-	svc := newGatewayRecordUsageServiceWithBillingRepoForTest(usageRepo, billingRepo, &openAIRecordUsageUserRepoStub{}, &openAIRecordUsageSubRepoStub{})
-
-	payloadHash := HashUsageRequestPayload([]byte(`{"messages":[{"role":"user","content":"hello"}]}`))
-	err := svc.RecordUsage(context.Background(), &RecordUsageInput{
-		Result: &ForwardResult{
-			RequestID: "gateway_payload_hash",
-			Usage: ClaudeUsage{
-				InputTokens:  10,
-				OutputTokens: 6,
-			},
-			Model:    "claude-sonnet-4",
-			Duration: time.Second,
-		},
-		APIKey:             &APIKey{ID: 501, Quota: 100},
-		User:               &User{ID: 601},
-		Account:            &Account{ID: 701},
-		RequestPayloadHash: payloadHash,
-	})
-	require.NoError(t, err)
-	require.NotNil(t, billingRepo.lastCmd)
-	require.Equal(t, payloadHash, billingRepo.lastCmd.RequestPayloadHash)
-}
-
-func TestGatewayServiceRecordUsage_BillingFingerprintFallsBackToContextRequestID(t *testing.T) {
-	usageRepo := &openAIRecordUsageLogRepoStub{}
-	billingRepo := &openAIRecordUsageBillingRepoStub{result: &UsageBillingApplyResult{Applied: true}}
-	svc := newGatewayRecordUsageServiceWithBillingRepoForTest(usageRepo, billingRepo, &openAIRecordUsageUserRepoStub{}, &openAIRecordUsageSubRepoStub{})
-
-	ctx := context.WithValue(context.Background(), ctxkey.RequestID, "req-local-123")
-	err := svc.RecordUsage(ctx, &RecordUsageInput{
-		Result: &ForwardResult{
-			RequestID: "gateway_payload_fallback",
-			Usage: ClaudeUsage{
-				InputTokens:  10,
-				OutputTokens: 6,
-			},
-			Model:    "claude-sonnet-4",
-			Duration: time.Second,
-		},
-		APIKey:  &APIKey{ID: 501, Quota: 100},
-		User:    &User{ID: 601},
-		Account: &Account{ID: 701},
-	})
-	require.NoError(t, err)
-	require.NotNil(t, billingRepo.lastCmd)
-	require.Equal(t, "local:req-local-123", billingRepo.lastCmd.RequestPayloadHash)
-}
-
-func TestGatewayServiceRecordUsage_UsageLogWriteErrorDoesNotSkipBilling(t *testing.T) {
-	usageRepo := &openAIRecordUsageLogRepoStub{inserted: false, err: MarkUsageLogCreateNotPersisted(context.Canceled)}
-	userRepo := &openAIRecordUsageUserRepoStub{}
-	subRepo := &openAIRecordUsageSubRepoStub{}
-	quotaSvc := &openAIRecordUsageAPIKeyQuotaStub{}
-	svc := newGatewayRecordUsageServiceForTest(usageRepo, userRepo, subRepo)
-
-	err := svc.RecordUsage(context.Background(), &RecordUsageInput{
-		Result: &ForwardResult{
-			RequestID: "gateway_not_persisted",
-			Usage: ClaudeUsage{
-				InputTokens:  10,
-				OutputTokens: 6,
-			},
-			Model:    "claude-sonnet-4",
-			Duration: time.Second,
-		},
-		APIKey: &APIKey{
-			ID:    503,
-			Quota: 100,
-		},
-		User:          &User{ID: 603},
-		Account:       &Account{ID: 703},
-		APIKeyService: quotaSvc,
-	})
-
-	require.NoError(t, err)
-	require.Equal(t, 1, usageRepo.calls)
-	require.Equal(t, 1, userRepo.deductCalls)
-	require.Equal(t, 1, quotaSvc.quotaCalls)
-}
-
-func TestGatewayServiceRecordUsageWithLongContext_BillingUsesDetachedContext(t *testing.T) {
-	usageRepo := &openAIRecordUsageLogRepoStub{inserted: false, err: context.DeadlineExceeded}
-	userRepo := &openAIRecordUsageUserRepoStub{}
-	subRepo := &openAIRecordUsageSubRepoStub{}
-	quotaSvc := &openAIRecordUsageAPIKeyQuotaStub{}
-	svc := newGatewayRecordUsageServiceForTest(usageRepo, userRepo, subRepo)
-
-	reqCtx, cancel := context.WithCancel(context.Background())
-	cancel()
-
-	err := svc.RecordUsageWithLongContext(reqCtx, &RecordUsageLongContextInput{
-		Result: &ForwardResult{
-			RequestID: "gateway_long_context_detached_ctx",
-			Usage: ClaudeUsage{
-				InputTokens:  12,
-				OutputTokens: 8,
-			},
-			Model:    "claude-sonnet-4",
-			Duration: time.Second,
-		},
-		APIKey: &APIKey{
-			ID:    502,
-			Quota: 100,
-		},
-		User:                  &User{ID: 602},
-		Account:               &Account{ID: 702},
-		LongContextThreshold:  200000,
-		LongContextMultiplier: 2,
-		APIKeyService:         quotaSvc,
-	})
-
-	require.NoError(t, err)
-	require.Equal(t, 1, usageRepo.calls)
-	require.Equal(t, 1, userRepo.deductCalls)
-	require.NoError(t, userRepo.lastCtxErr)
-	require.Equal(t, 1, quotaSvc.quotaCalls)
-	require.NoError(t, quotaSvc.lastQuotaCtxErr)
-}
-
-func TestGatewayServiceRecordUsage_UsesFallbackRequestIDForUsageLog(t *testing.T) {
-	usageRepo := &openAIRecordUsageLogRepoStub{}
-	userRepo := &openAIRecordUsageUserRepoStub{}
-	subRepo := &openAIRecordUsageSubRepoStub{}
-	svc := newGatewayRecordUsageServiceForTest(usageRepo, userRepo, subRepo)
-
-	ctx := context.WithValue(context.Background(), ctxkey.RequestID, "gateway-local-fallback")
-	err := svc.RecordUsage(ctx, &RecordUsageInput{
-		Result: &ForwardResult{
-			RequestID: "",
-			Usage: ClaudeUsage{
-				InputTokens:  10,
-				OutputTokens: 6,
-			},
-			Model:    "claude-sonnet-4",
-			Duration: time.Second,
-		},
-		APIKey:  &APIKey{ID: 504},
-		User:    &User{ID: 604},
-		Account: &Account{ID: 704},
-	})
-
-	require.NoError(t, err)
-	require.NotNil(t, usageRepo.lastLog)
-	require.Equal(t, "local:gateway-local-fallback", usageRepo.lastLog.RequestID)
-}
-
-func TestGatewayServiceRecordUsage_PrefersClientRequestIDOverUpstreamRequestID(t *testing.T) {
-	usageRepo := &openAIRecordUsageLogRepoStub{}
-	billingRepo := &openAIRecordUsageBillingRepoStub{result: &UsageBillingApplyResult{Applied: true}}
-	svc := newGatewayRecordUsageServiceWithBillingRepoForTest(usageRepo, billingRepo, &openAIRecordUsageUserRepoStub{}, &openAIRecordUsageSubRepoStub{})
-
-	ctx := context.WithValue(context.Background(), ctxkey.ClientRequestID, "client-stable-123")
-	ctx = context.WithValue(ctx, ctxkey.RequestID, "req-local-ignored")
-	err := svc.RecordUsage(ctx, &RecordUsageInput{
-		Result: &ForwardResult{
-			RequestID: "upstream-volatile-456",
-			Usage: ClaudeUsage{
-				InputTokens:  10,
-				OutputTokens: 6,
-			},
-			Model:    "claude-sonnet-4",
-			Duration: time.Second,
-		},
-		APIKey:  &APIKey{ID: 506},
-		User:    &User{ID: 606},
-		Account: &Account{ID: 706},
-	})
-
-	require.NoError(t, err)
-	require.NotNil(t, billingRepo.lastCmd)
-	require.Equal(t, "client:client-stable-123", billingRepo.lastCmd.RequestID)
-	require.NotNil(t, usageRepo.lastLog)
-	require.Equal(t, "client:client-stable-123", usageRepo.lastLog.RequestID)
-}
-
-func TestGatewayServiceRecordUsage_GeneratesRequestIDWhenAllSourcesMissing(t *testing.T) {
-	usageRepo := &openAIRecordUsageLogRepoStub{}
-	billingRepo := &openAIRecordUsageBillingRepoStub{result: &UsageBillingApplyResult{Applied: true}}
-	svc := newGatewayRecordUsageServiceWithBillingRepoForTest(usageRepo, billingRepo, &openAIRecordUsageUserRepoStub{}, &openAIRecordUsageSubRepoStub{})
-
-	err := svc.RecordUsage(context.Background(), &RecordUsageInput{
-		Result: &ForwardResult{
-			RequestID: "",
-			Usage: ClaudeUsage{
-				InputTokens:  10,
-				OutputTokens: 6,
-			},
-			Model:    "claude-sonnet-4",
-			Duration: time.Second,
-		},
-		APIKey:  &APIKey{ID: 507},
-		User:    &User{ID: 607},
-		Account: &Account{ID: 707},
-	})
-
-	require.NoError(t, err)
-	require.NotNil(t, billingRepo.lastCmd)
-	require.True(t, strings.HasPrefix(billingRepo.lastCmd.RequestID, "generated:"))
-	require.NotNil(t, usageRepo.lastLog)
-	require.Equal(t, billingRepo.lastCmd.RequestID, usageRepo.lastLog.RequestID)
-}
-
-func TestGatewayServiceRecordUsage_DroppedUsageLogDoesNotSyncFallback(t *testing.T) {
-	usageRepo := &openAIRecordUsageBestEffortLogRepoStub{
-		bestEffortErr: MarkUsageLogCreateDropped(errors.New("usage log best-effort queue full")),
-	}
-	billingRepo := &openAIRecordUsageBillingRepoStub{result: &UsageBillingApplyResult{Applied: true}}
-	svc := newGatewayRecordUsageServiceWithBillingRepoForTest(usageRepo, billingRepo, &openAIRecordUsageUserRepoStub{}, &openAIRecordUsageSubRepoStub{})
-
-	err := svc.RecordUsage(context.Background(), &RecordUsageInput{
-		Result: &ForwardResult{
-			RequestID: "gateway_drop_usage_log",
-			Usage: ClaudeUsage{
-				InputTokens:  10,
-				OutputTokens: 6,
-			},
-			Model:    "claude-sonnet-4",
-			Duration: time.Second,
-		},
-		APIKey:  &APIKey{ID: 508},
-		User:    &User{ID: 608},
-		Account: &Account{ID: 708},
-	})
-
-	require.NoError(t, err)
-	require.Equal(t, 1, usageRepo.bestEffortCalls)
-	require.Equal(t, 0, usageRepo.createCalls)
-}
-
-func TestGatewayServiceRecordUsage_BillingErrorSkipsUsageLogWrite(t *testing.T) {
-	usageRepo := &openAIRecordUsageLogRepoStub{}
-	billingRepo := &openAIRecordUsageBillingRepoStub{err: context.DeadlineExceeded}
-	userRepo := &openAIRecordUsageUserRepoStub{}
-	subRepo := &openAIRecordUsageSubRepoStub{}
-	svc := newGatewayRecordUsageServiceWithBillingRepoForTest(usageRepo, billingRepo, userRepo, subRepo)
-
-	err := svc.RecordUsage(context.Background(), &RecordUsageInput{
-		Result: &ForwardResult{
-			RequestID: "gateway_billing_fail",
-			Usage: ClaudeUsage{
-				InputTokens:  10,
-				OutputTokens: 6,
-			},
-			Model:    "claude-sonnet-4",
-			Duration: time.Second,
-		},
-		APIKey:  &APIKey{ID: 505},
-		User:    &User{ID: 605},
-		Account: &Account{ID: 705},
-	})
-
-	require.Error(t, err)
-	require.Equal(t, 1, billingRepo.calls)
-	require.Equal(t, 0, usageRepo.calls)
-}

backend/internal/service/gateway_response_usage_sync_test.go

@@ -0,0 +1,170 @@
+package service
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"net/http"
+	"net/http/httptest"
+	"testing"
+
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/gin-gonic/gin"
+	"github.com/stretchr/testify/require"
+	"github.com/tidwall/gjson"
+)
+
+func TestHandleNonStreamingResponse_UsageAlignedWithClaudeMaxSimulation(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	svc := &GatewayService{
+		cfg:              &config.Config{},
+		rateLimitService: &RateLimitService{},
+	}
+
+	account := &Account{
+		ID:       11,
+		Platform: PlatformAnthropic,
+		Type:     AccountTypeOAuth,
+		Extra: map[string]any{
+			"cache_ttl_override_enabled": true,
+			"cache_ttl_override_target":  "5m",
+		},
+	}
+	group := &Group{
+		ID:                       99,
+		Platform:                 PlatformAnthropic,
+		SimulateClaudeMaxEnabled: true,
+	}
+	parsed := &ParsedRequest{
+		Model: "claude-sonnet-4",
+		Messages: []any{
+			map[string]any{
+				"role": "user",
+				"content": []any{
+					map[string]any{
+						"type":          "text",
+						"text":          "long cached context",
+						"cache_control": map[string]any{"type": "ephemeral"},
+					},
+					map[string]any{
+						"type": "text",
+						"text": "new user question",
+					},
+				},
+			},
+		},
+	}
+
+	upstreamBody := []byte(`{"id":"msg_1","model":"claude-sonnet-4","usage":{"input_tokens":120,"output_tokens":8}}`)
+	resp := &http.Response{
+		StatusCode: http.StatusOK,
+		Header:     http.Header{"Content-Type": []string{"application/json"}},
+		Body:       ioNopCloserBytes(upstreamBody),
+	}
+
+	rec := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(rec)
+	c.Request = httptest.NewRequest(http.MethodPost, "/v1/messages", bytes.NewReader(nil))
+	c.Set("api_key", &APIKey{Group: group})
+	requestCtx := withClaudeMaxResponseRewriteContext(context.Background(), c, parsed)
+
+	usage, err := svc.handleNonStreamingResponse(requestCtx, resp, c, account, "claude-sonnet-4", "claude-sonnet-4")
+	require.NoError(t, err)
+	require.NotNil(t, usage)
+
+	var rendered struct {
+		Usage ClaudeUsage `json:"usage"`
+	}
+	require.NoError(t, json.Unmarshal(rec.Body.Bytes(), &rendered))
+	rendered.Usage.CacheCreation5mTokens = int(gjson.GetBytes(rec.Body.Bytes(), "usage.cache_creation.ephemeral_5m_input_tokens").Int())
+	rendered.Usage.CacheCreation1hTokens = int(gjson.GetBytes(rec.Body.Bytes(), "usage.cache_creation.ephemeral_1h_input_tokens").Int())
+
+	require.Equal(t, rendered.Usage.InputTokens, usage.InputTokens)
+	require.Equal(t, rendered.Usage.OutputTokens, usage.OutputTokens)
+	require.Equal(t, rendered.Usage.CacheCreationInputTokens, usage.CacheCreationInputTokens)
+	require.Equal(t, rendered.Usage.CacheCreation5mTokens, usage.CacheCreation5mTokens)
+	require.Equal(t, rendered.Usage.CacheCreation1hTokens, usage.CacheCreation1hTokens)
+	require.Equal(t, rendered.Usage.CacheReadInputTokens, usage.CacheReadInputTokens)
+
+	require.Greater(t, usage.CacheCreation1hTokens, 0)
+	require.Equal(t, 0, usage.CacheCreation5mTokens)
+	require.Less(t, usage.InputTokens, 120)
+}
+
+func TestHandleNonStreamingResponse_ClaudeMaxDisabled_NoSimulationIntercept(t *testing.T) {
+	gin.SetMode(gin.TestMode)
+
+	svc := &GatewayService{
+		cfg:              &config.Config{},
+		rateLimitService: &RateLimitService{},
+	}
+
+	account := &Account{
+		ID:       12,
+		Platform: PlatformAnthropic,
+		Type:     AccountTypeOAuth,
+		Extra: map[string]any{
+			"cache_ttl_override_enabled": true,
+			"cache_ttl_override_target":  "5m",
+		},
+	}
+	group := &Group{
+		ID:                       100,
+		Platform:                 PlatformAnthropic,
+		SimulateClaudeMaxEnabled: false,
+	}
+	parsed := &ParsedRequest{
+		Model: "claude-sonnet-4",
+		Messages: []any{
+			map[string]any{
+				"role": "user",
+				"content": []any{
+					map[string]any{
+						"type":          "text",
+						"text":          "long cached context",
+						"cache_control": map[string]any{"type": "ephemeral"},
+					},
+					map[string]any{
+						"type": "text",
+						"text": "new user question",
+					},
+				},
+			},
+		},
+	}
+
+	upstreamBody := []byte(`{"id":"msg_2","model":"claude-sonnet-4","usage":{"input_tokens":120,"output_tokens":8}}`)
+	resp := &http.Response{
+		StatusCode: http.StatusOK,
+		Header:     http.Header{"Content-Type": []string{"application/json"}},
+		Body:       ioNopCloserBytes(upstreamBody),
+	}
+
+	rec := httptest.NewRecorder()
+	c, _ := gin.CreateTestContext(rec)
+	c.Request = httptest.NewRequest(http.MethodPost, "/v1/messages", bytes.NewReader(nil))
+	c.Set("api_key", &APIKey{Group: group})
+	requestCtx := withClaudeMaxResponseRewriteContext(context.Background(), c, parsed)
+
+	usage, err := svc.handleNonStreamingResponse(requestCtx, resp, c, account, "claude-sonnet-4", "claude-sonnet-4")
+	require.NoError(t, err)
+	require.NotNil(t, usage)
+
+	require.Equal(t, 120, usage.InputTokens)
+	require.Equal(t, 0, usage.CacheCreationInputTokens)
+	require.Equal(t, 0, usage.CacheCreation5mTokens)
+	require.Equal(t, 0, usage.CacheCreation1hTokens)
+}
+
+func ioNopCloserBytes(b []byte) *readCloserFromBytes {
+	return &readCloserFromBytes{Reader: bytes.NewReader(b)}
+}
+
+type readCloserFromBytes struct {
+	*bytes.Reader
+}
+
+func (r *readCloserFromBytes) Close() error {
+	return nil
+}

backend/internal/service/gateway_service_bedrock_beta_test.go

@@ -1,267 +0,0 @@
-package service
-
-import (
-	"context"
-	"encoding/json"
-	"testing"
-
-	"github.com/Wei-Shaw/sub2api/internal/config"
-)
-
-type betaPolicySettingRepoStub struct {
-	values map[string]string
-}
-
-func (s *betaPolicySettingRepoStub) Get(ctx context.Context, key string) (*Setting, error) {
-	panic("unexpected Get call")
-}
-
-func (s *betaPolicySettingRepoStub) GetValue(ctx context.Context, key string) (string, error) {
-	if v, ok := s.values[key]; ok {
-		return v, nil
-	}
-	return "", ErrSettingNotFound
-}
-
-func (s *betaPolicySettingRepoStub) Set(ctx context.Context, key, value string) error {
-	panic("unexpected Set call")
-}
-
-func (s *betaPolicySettingRepoStub) GetMultiple(ctx context.Context, keys []string) (map[string]string, error) {
-	panic("unexpected GetMultiple call")
-}
-
-func (s *betaPolicySettingRepoStub) SetMultiple(ctx context.Context, settings map[string]string) error {
-	panic("unexpected SetMultiple call")
-}
-
-func (s *betaPolicySettingRepoStub) GetAll(ctx context.Context) (map[string]string, error) {
-	panic("unexpected GetAll call")
-}
-
-func (s *betaPolicySettingRepoStub) Delete(ctx context.Context, key string) error {
-	panic("unexpected Delete call")
-}
-
-func TestResolveBedrockBetaTokensForRequest_BlocksOnOriginalAnthropicToken(t *testing.T) {
-	settings := &BetaPolicySettings{
-		Rules: []BetaPolicyRule{
-			{
-				BetaToken:    "advanced-tool-use-2025-11-20",
-				Action:       BetaPolicyActionBlock,
-				Scope:        BetaPolicyScopeAll,
-				ErrorMessage: "advanced tool use is blocked",
-			},
-		},
-	}
-	raw, err := json.Marshal(settings)
-	if err != nil {
-		t.Fatalf("marshal settings: %v", err)
-	}
-
-	svc := &GatewayService{
-		settingService: NewSettingService(
-			&betaPolicySettingRepoStub{values: map[string]string{
-				SettingKeyBetaPolicySettings: string(raw),
-			}},
-			&config.Config{},
-		),
-	}
-	account := &Account{Platform: PlatformAnthropic, Type: AccountTypeBedrock}
-
-	_, err = svc.resolveBedrockBetaTokensForRequest(
-		context.Background(),
-		account,
-		"advanced-tool-use-2025-11-20",
-		[]byte(`{"messages":[{"role":"user","content":"hi"}]}`),
-		"us.anthropic.claude-opus-4-6-v1",
-	)
-	if err == nil {
-		t.Fatal("expected raw advanced-tool-use token to be blocked before Bedrock transform")
-	}
-	if err.Error() != "advanced tool use is blocked" {
-		t.Fatalf("unexpected error: %v", err)
-	}
-}
-
-func TestResolveBedrockBetaTokensForRequest_FiltersAfterBedrockTransform(t *testing.T) {
-	settings := &BetaPolicySettings{
-		Rules: []BetaPolicyRule{
-			{
-				BetaToken: "tool-search-tool-2025-10-19",
-				Action:    BetaPolicyActionFilter,
-				Scope:     BetaPolicyScopeAll,
-			},
-		},
-	}
-	raw, err := json.Marshal(settings)
-	if err != nil {
-		t.Fatalf("marshal settings: %v", err)
-	}
-
-	svc := &GatewayService{
-		settingService: NewSettingService(
-			&betaPolicySettingRepoStub{values: map[string]string{
-				SettingKeyBetaPolicySettings: string(raw),
-			}},
-			&config.Config{},
-		),
-	}
-	account := &Account{Platform: PlatformAnthropic, Type: AccountTypeBedrock}
-
-	betaTokens, err := svc.resolveBedrockBetaTokensForRequest(
-		context.Background(),
-		account,
-		"advanced-tool-use-2025-11-20",
-		[]byte(`{"messages":[{"role":"user","content":"hi"}]}`),
-		"us.anthropic.claude-opus-4-6-v1",
-	)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	for _, token := range betaTokens {
-		if token == "tool-search-tool-2025-10-19" {
-			t.Fatalf("expected transformed Bedrock token to be filtered")
-		}
-	}
-}
-
-// TestResolveBedrockBetaTokensForRequest_BlocksBodyAutoInjectedThinking 验证：
-// 管理员 block 了 interleaved-thinking，客户端不在 header 中带该 token，
-// 但请求体包含 thinking 字段 → 自动注入后应被 block。
-func TestResolveBedrockBetaTokensForRequest_BlocksBodyAutoInjectedThinking(t *testing.T) {
-	settings := &BetaPolicySettings{
-		Rules: []BetaPolicyRule{
-			{
-				BetaToken:    "interleaved-thinking-2025-05-14",
-				Action:       BetaPolicyActionBlock,
-				Scope:        BetaPolicyScopeAll,
-				ErrorMessage: "thinking is blocked",
-			},
-		},
-	}
-	raw, err := json.Marshal(settings)
-	if err != nil {
-		t.Fatalf("marshal settings: %v", err)
-	}
-
-	svc := &GatewayService{
-		settingService: NewSettingService(
-			&betaPolicySettingRepoStub{values: map[string]string{
-				SettingKeyBetaPolicySettings: string(raw),
-			}},
-			&config.Config{},
-		),
-	}
-	account := &Account{Platform: PlatformAnthropic, Type: AccountTypeBedrock}
-
-	// header 中不带 beta token，但 body 中有 thinking 字段
-	_, err = svc.resolveBedrockBetaTokensForRequest(
-		context.Background(),
-		account,
-		"", // 空 header
-		[]byte(`{"thinking":{"type":"enabled","budget_tokens":10000},"messages":[{"role":"user","content":"hi"}]}`),
-		"us.anthropic.claude-opus-4-6-v1",
-	)
-	if err == nil {
-		t.Fatal("expected body-injected interleaved-thinking to be blocked")
-	}
-	if err.Error() != "thinking is blocked" {
-		t.Fatalf("unexpected error: %v", err)
-	}
-}
-
-// TestResolveBedrockBetaTokensForRequest_BlocksBodyAutoInjectedToolSearch 验证：
-// 管理员 block 了 tool-search-tool，客户端不在 header 中带 beta token，
-// 但请求体包含 tool search 工具 → 自动注入后应被 block。
-func TestResolveBedrockBetaTokensForRequest_BlocksBodyAutoInjectedToolSearch(t *testing.T) {
-	settings := &BetaPolicySettings{
-		Rules: []BetaPolicyRule{
-			{
-				BetaToken:    "tool-search-tool-2025-10-19",
-				Action:       BetaPolicyActionBlock,
-				Scope:        BetaPolicyScopeAll,
-				ErrorMessage: "tool search is blocked",
-			},
-		},
-	}
-	raw, err := json.Marshal(settings)
-	if err != nil {
-		t.Fatalf("marshal settings: %v", err)
-	}
-
-	svc := &GatewayService{
-		settingService: NewSettingService(
-			&betaPolicySettingRepoStub{values: map[string]string{
-				SettingKeyBetaPolicySettings: string(raw),
-			}},
-			&config.Config{},
-		),
-	}
-	account := &Account{Platform: PlatformAnthropic, Type: AccountTypeBedrock}
-
-	// header 中不带 beta token，但 body 中有 tool_search_tool 工具
-	_, err = svc.resolveBedrockBetaTokensForRequest(
-		context.Background(),
-		account,
-		"",
-		[]byte(`{"tools":[{"type":"tool_search_tool_regex_20251119","name":"search"}],"messages":[{"role":"user","content":"hi"}]}`),
-		"us.anthropic.claude-sonnet-4-6",
-	)
-	if err == nil {
-		t.Fatal("expected body-injected tool-search-tool to be blocked")
-	}
-	if err.Error() != "tool search is blocked" {
-		t.Fatalf("unexpected error: %v", err)
-	}
-}
-
-// TestResolveBedrockBetaTokensForRequest_PassesWhenNoBlockRuleMatches 验证：
-// body 自动注入的 token 如果没有对应的 block 规则，应正常通过。
-func TestResolveBedrockBetaTokensForRequest_PassesWhenNoBlockRuleMatches(t *testing.T) {
-	settings := &BetaPolicySettings{
-		Rules: []BetaPolicyRule{
-			{
-				BetaToken:    "computer-use-2025-11-24",
-				Action:       BetaPolicyActionBlock,
-				Scope:        BetaPolicyScopeAll,
-				ErrorMessage: "computer use is blocked",
-			},
-		},
-	}
-	raw, err := json.Marshal(settings)
-	if err != nil {
-		t.Fatalf("marshal settings: %v", err)
-	}
-
-	svc := &GatewayService{
-		settingService: NewSettingService(
-			&betaPolicySettingRepoStub{values: map[string]string{
-				SettingKeyBetaPolicySettings: string(raw),
-			}},
-			&config.Config{},
-		),
-	}
-	account := &Account{Platform: PlatformAnthropic, Type: AccountTypeBedrock}
-
-	// body 中有 thinking（会注入 interleaved-thinking），但 block 规则只针对 computer-use
-	tokens, err := svc.resolveBedrockBetaTokensForRequest(
-		context.Background(),
-		account,
-		"",
-		[]byte(`{"thinking":{"type":"enabled","budget_tokens":10000},"messages":[{"role":"user","content":"hi"}]}`),
-		"us.anthropic.claude-opus-4-6-v1",
-	)
-	if err != nil {
-		t.Fatalf("unexpected error: %v", err)
-	}
-	found := false
-	for _, token := range tokens {
-		if token == "interleaved-thinking-2025-05-14" {
-			found = true
-		}
-	}
-	if !found {
-		t.Fatal("expected interleaved-thinking token to be present")
-	}
-}

backend/internal/service/gateway_service_bedrock_model_support_test.go

@@ -1,48 +0,0 @@
-package service
-
-import "testing"
-
-func TestGatewayServiceIsModelSupportedByAccount_BedrockDefaultMappingRestrictsModels(t *testing.T) {
-	svc := &GatewayService{}
-	account := &Account{
-		Platform: PlatformAnthropic,
-		Type:     AccountTypeBedrock,
-		Credentials: map[string]any{
-			"aws_region": "us-east-1",
-		},
-	}
-
-	if !svc.isModelSupportedByAccount(account, "claude-sonnet-4-5") {
-		t.Fatalf("expected default Bedrock alias to be supported")
-	}
-
-	if svc.isModelSupportedByAccount(account, "claude-3-5-sonnet-20241022") {
-		t.Fatalf("expected unsupported alias to be rejected for Bedrock account")
-	}
-}
-
-func TestGatewayServiceIsModelSupportedByAccount_BedrockCustomMappingStillActsAsAllowlist(t *testing.T) {
-	svc := &GatewayService{}
-	account := &Account{
-		Platform: PlatformAnthropic,
-		Type:     AccountTypeBedrock,
-		Credentials: map[string]any{
-			"aws_region": "eu-west-1",
-			"model_mapping": map[string]any{
-				"claude-sonnet-*": "claude-sonnet-4-6",
-			},
-		},
-	}
-
-	if !svc.isModelSupportedByAccount(account, "claude-sonnet-4-6") {
-		t.Fatalf("expected matched custom mapping to be supported")
-	}
-
-	if !svc.isModelSupportedByAccount(account, "claude-opus-4-6") {
-		t.Fatalf("expected default Bedrock alias fallback to remain supported")
-	}
-
-	if svc.isModelSupportedByAccount(account, "claude-3-5-sonnet-20241022") {
-		t.Fatalf("expected unsupported model to still be rejected")
-	}
-}

backend/internal/service/gateway_streaming_test.go

@@ -181,8 +181,7 @@ func TestHandleStreamingResponse_EmptyStream(t *testing.T) {
 
 	result, err := svc.handleStreamingResponse(context.Background(), resp, c, &Account{ID: 1}, time.Now(), "model", "model", false)
 	_ = pr.Close()
-	require.Error(t, err)
-	require.Contains(t, err.Error(), "missing terminal event")
+	require.NoError(t, err)
 	require.NotNil(t, result)
 }
 

backend/internal/service/group.go

@@ -50,6 +50,9 @@ type Group struct {
 	// MCP XML 协议注入开关（仅 antigravity 平台使用）
 	MCPXMLInject bool
 
+	// Claude usage 模拟开关：将无写缓存 usage 模拟为 claude-max 风格
+	SimulateClaudeMaxEnabled bool
+
 	// 支持的模型系列（仅 antigravity 平台使用）
 	// 可选值: claude, gemini_text, gemini_image
 	SupportedModelScopes []string

backend/internal/service/openai_codex_transform.go

@@ -129,41 +129,6 @@ func applyCodexOAuthTransform(reqBody map[string]any, isCodexCLI bool, isCompact
 		}
 	}
 
-	// 兼容遗留的 functions 和 function_call，转换为 tools 和 tool_choice
-	if functionsRaw, ok := reqBody["functions"]; ok {
-		if functions, k := functionsRaw.([]any); k {
-			tools := make([]any, 0, len(functions))
-			for _, f := range functions {
-				tools = append(tools, map[string]any{
-					"type":     "function",
-					"function": f,
-				})
-			}
-			reqBody["tools"] = tools
-		}
-		delete(reqBody, "functions")
-		result.Modified = true
-	}
-
-	if fcRaw, ok := reqBody["function_call"]; ok {
-		if fcStr, ok := fcRaw.(string); ok {
-			// e.g. "auto", "none"
-			reqBody["tool_choice"] = fcStr
-		} else if fcObj, ok := fcRaw.(map[string]any); ok {
-			// e.g. {"name": "my_func"}
-			if name, ok := fcObj["name"].(string); ok && strings.TrimSpace(name) != "" {
-				reqBody["tool_choice"] = map[string]any{
-					"type": "function",
-					"function": map[string]any{
-						"name": name,
-					},
-				}
-			}
-		}
-		delete(reqBody, "function_call")
-		result.Modified = true
-	}
-
 	if normalizeCodexTools(reqBody) {
 		result.Modified = true
 	}
@@ -338,18 +303,6 @@ func filterCodexInput(input []any, preserveReferences bool) []any {
 			continue
 		}
 		typ, _ := m["type"].(string)
-
-		// 修复 OpenAI 上游的最新校验："Expected an ID that begins with 'fc'"
-		fixIDPrefix := func(id string) string {
-			if id == "" || strings.HasPrefix(id, "fc") {
-				return id
-			}
-			if strings.HasPrefix(id, "call_") {
-				return "fc" + strings.TrimPrefix(id, "call_")
-			}
-			return "fc_" + id
-		}
-
 		if typ == "item_reference" {
 			if !preserveReferences {
 				continue
@@ -358,9 +311,6 @@ func filterCodexInput(input []any, preserveReferences bool) []any {
 			for key, value := range m {
 				newItem[key] = value
 			}
-			if id, ok := newItem["id"].(string); ok && id != "" {
-				newItem["id"] = fixIDPrefix(id)
-			}
 			filtered = append(filtered, newItem)
 			continue
 		}
@@ -380,20 +330,10 @@ func filterCodexInput(input []any, preserveReferences bool) []any {
 		}
 
 		if isCodexToolCallItemType(typ) {
-			callID, ok := m["call_id"].(string)
-			if !ok || strings.TrimSpace(callID) == "" {
+			if callID, ok := m["call_id"].(string); !ok || strings.TrimSpace(callID) == "" {
 				if id, ok := m["id"].(string); ok && strings.TrimSpace(id) != "" {
-					callID = id
 					ensureCopy()
-					newItem["call_id"] = callID
-				}
-			}
-
-			if callID != "" {
-				fixedCallID := fixIDPrefix(callID)
-				if fixedCallID != callID {
-					ensureCopy()
-					newItem["call_id"] = fixedCallID
+					newItem["call_id"] = id
 				}
 			}
 		}
@@ -404,14 +344,6 @@ func filterCodexInput(input []any, preserveReferences bool) []any {
 			if !isCodexToolCallItemType(typ) {
 				delete(newItem, "call_id")
 			}
-		} else {
-			if id, ok := newItem["id"].(string); ok && id != "" {
-				fixedID := fixIDPrefix(id)
-				if fixedID != id {
-					ensureCopy()
-					newItem["id"] = fixedID
-				}
-			}
 		}
 
 		filtered = append(filtered, newItem)