feat(service): 扩展 CRS 同步和定价服务支持 Gemini

- CRS 同步服务新增 Gemini 账号同步逻辑（+273行）
- 定价服务扩展 Gemini 模型定价计算（+99行）
- 更新 Token 刷新服务集成 Gemini
- 更新相关单元测试

backend/internal/repository/pricing_service_test.go

@@ -120,10 +120,9 @@ func (s *PricingServiceSuite) TestFetchHashText_WhitespaceOnly() {
 
 func (s *PricingServiceSuite) TestFetchPricingJSON_ContextCancel() {
 	started := make(chan struct{})
-	block := make(chan struct{})
 	s.setupServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		close(started)
-		<-block
+		<-r.Context().Done()
 	}))
 
 	ctx, cancel := context.WithCancel(s.ctx)
@@ -136,7 +135,6 @@ func (s *PricingServiceSuite) TestFetchPricingJSON_ContextCancel() {
 
 	<-started
 	cancel()
-	close(block)
 
 	err := <-done
 	require.Error(s.T(), err)

backend/internal/service/crs_sync_service.go

@@ -9,6 +9,7 @@ import (
 	"io"
 	"net/http"
 	"net/url"
+	"strconv"
 	"strings"
 	"time"
 
@@ -20,6 +21,7 @@ type CRSSyncService struct {
 	proxyRepo          ProxyRepository
 	oauthService       *OAuthService
 	openaiOAuthService *OpenAIOAuthService
+	geminiOAuthService *GeminiOAuthService
 }
 
 func NewCRSSyncService(
@@ -27,12 +29,14 @@ func NewCRSSyncService(
 	proxyRepo ProxyRepository,
 	oauthService *OAuthService,
 	openaiOAuthService *OpenAIOAuthService,
+	geminiOAuthService *GeminiOAuthService,
 ) *CRSSyncService {
 	return &CRSSyncService{
 		accountRepo:        accountRepo,
 		proxyRepo:          proxyRepo,
 		oauthService:       oauthService,
 		openaiOAuthService: openaiOAuthService,
+		geminiOAuthService: geminiOAuthService,
 	}
 }
 
@@ -77,6 +81,8 @@ type crsExportResponse struct {
 		ClaudeConsoleAccounts   []crsConsoleAccount         `json:"claudeConsoleAccounts"`
 		OpenAIOAuthAccounts     []crsOpenAIOAuthAccount     `json:"openaiOAuthAccounts"`
 		OpenAIResponsesAccounts []crsOpenAIResponsesAccount `json:"openaiResponsesAccounts"`
+		GeminiOAuthAccounts     []crsGeminiOAuthAccount     `json:"geminiOAuthAccounts"`
+		GeminiAPIKeyAccounts    []crsGeminiAPIKeyAccount    `json:"geminiApiKeyAccounts"`
 	} `json:"data"`
 }
 
@@ -149,6 +155,37 @@ type crsOpenAIOAuthAccount struct {
 	Extra       map[string]any `json:"extra"`
 }
 
+type crsGeminiOAuthAccount struct {
+	Kind        string         `json:"kind"`
+	ID          string         `json:"id"`
+	Name        string         `json:"name"`
+	Description string         `json:"description"`
+	Platform    string         `json:"platform"`
+	AuthType    string         `json:"authType"` // oauth
+	IsActive    bool           `json:"isActive"`
+	Schedulable bool           `json:"schedulable"`
+	Priority    int            `json:"priority"`
+	Status      string         `json:"status"`
+	Proxy       *crsProxy      `json:"proxy"`
+	Credentials map[string]any `json:"credentials"`
+	Extra       map[string]any `json:"extra"`
+}
+
+type crsGeminiAPIKeyAccount struct {
+	Kind        string         `json:"kind"`
+	ID          string         `json:"id"`
+	Name        string         `json:"name"`
+	Description string         `json:"description"`
+	Platform    string         `json:"platform"`
+	IsActive    bool           `json:"isActive"`
+	Schedulable bool           `json:"schedulable"`
+	Priority    int            `json:"priority"`
+	Status      string         `json:"status"`
+	Proxy       *crsProxy      `json:"proxy"`
+	Credentials map[string]any `json:"credentials"`
+	Extra       map[string]any `json:"extra"`
+}
+
 func (s *CRSSyncService) SyncFromCRS(ctx context.Context, input SyncFromCRSInput) (*SyncFromCRSResult, error) {
 	baseURL, err := normalizeBaseURL(input.BaseURL)
 	if err != nil {
@@ -176,7 +213,7 @@ func (s *CRSSyncService) SyncFromCRS(ctx context.Context, input SyncFromCRSInput
 		Items: make(
 			[]SyncFromCRSItemResult,
 			0,
-			len(exported.Data.ClaudeAccounts)+len(exported.Data.ClaudeConsoleAccounts)+len(exported.Data.OpenAIOAuthAccounts)+len(exported.Data.OpenAIResponsesAccounts),
+			len(exported.Data.ClaudeAccounts)+len(exported.Data.ClaudeConsoleAccounts)+len(exported.Data.OpenAIOAuthAccounts)+len(exported.Data.OpenAIResponsesAccounts)+len(exported.Data.GeminiOAuthAccounts)+len(exported.Data.GeminiAPIKeyAccounts),
 		),
 	}
 
@@ -680,6 +717,225 @@ func (s *CRSSyncService) SyncFromCRS(ctx context.Context, input SyncFromCRSInput
 		result.Items = append(result.Items, item)
 	}
 
+	// Gemini OAuth -> sub2api gemini oauth
+	for _, src := range exported.Data.GeminiOAuthAccounts {
+		item := SyncFromCRSItemResult{
+			CRSAccountID: src.ID,
+			Kind:         src.Kind,
+			Name:         src.Name,
+		}
+
+		refreshToken, _ := src.Credentials["refresh_token"].(string)
+		if strings.TrimSpace(refreshToken) == "" {
+			item.Action = "failed"
+			item.Error = "missing refresh_token"
+			result.Failed++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		proxyID, err := s.mapOrCreateProxy(ctx, input.SyncProxies, &proxies, src.Proxy, fmt.Sprintf("crs-%s", src.Name))
+		if err != nil {
+			item.Action = "failed"
+			item.Error = "proxy sync failed: " + err.Error()
+			result.Failed++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		credentials := sanitizeCredentialsMap(src.Credentials)
+		if v, ok := credentials["token_type"].(string); !ok || strings.TrimSpace(v) == "" {
+			credentials["token_type"] = "Bearer"
+		}
+		// Convert expires_at from RFC3339 to Unix seconds string (recommended to keep consistent with GetCredential())
+		if expiresAtStr, ok := credentials["expires_at"].(string); ok && strings.TrimSpace(expiresAtStr) != "" {
+			if t, err := time.Parse(time.RFC3339, expiresAtStr); err == nil {
+				credentials["expires_at"] = strconv.FormatInt(t.Unix(), 10)
+			}
+		}
+
+		extra := make(map[string]any)
+		if src.Extra != nil {
+			for k, v := range src.Extra {
+				extra[k] = v
+			}
+		}
+		extra["crs_account_id"] = src.ID
+		extra["crs_kind"] = src.Kind
+		extra["crs_synced_at"] = now
+
+		existing, err := s.accountRepo.GetByCRSAccountID(ctx, src.ID)
+		if err != nil {
+			item.Action = "failed"
+			item.Error = "db lookup failed: " + err.Error()
+			result.Failed++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		if existing == nil {
+			account := &model.Account{
+				Name:        defaultName(src.Name, src.ID),
+				Platform:    model.PlatformGemini,
+				Type:        model.AccountTypeOAuth,
+				Credentials: model.JSONB(credentials),
+				Extra:       model.JSONB(extra),
+				ProxyID:     proxyID,
+				Concurrency: 3,
+				Priority:    clampPriority(src.Priority),
+				Status:      mapCRSStatus(src.IsActive, src.Status),
+				Schedulable: src.Schedulable,
+			}
+			if err := s.accountRepo.Create(ctx, account); err != nil {
+				item.Action = "failed"
+				item.Error = "create failed: " + err.Error()
+				result.Failed++
+				result.Items = append(result.Items, item)
+				continue
+			}
+			if refreshedCreds := s.refreshOAuthToken(ctx, account); refreshedCreds != nil {
+				account.Credentials = refreshedCreds
+				_ = s.accountRepo.Update(ctx, account)
+			}
+			item.Action = "created"
+			result.Created++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		existing.Extra = mergeJSONB(existing.Extra, extra)
+		existing.Name = defaultName(src.Name, src.ID)
+		existing.Platform = model.PlatformGemini
+		existing.Type = model.AccountTypeOAuth
+		existing.Credentials = mergeJSONB(existing.Credentials, credentials)
+		if proxyID != nil {
+			existing.ProxyID = proxyID
+		}
+		existing.Concurrency = 3
+		existing.Priority = clampPriority(src.Priority)
+		existing.Status = mapCRSStatus(src.IsActive, src.Status)
+		existing.Schedulable = src.Schedulable
+
+		if err := s.accountRepo.Update(ctx, existing); err != nil {
+			item.Action = "failed"
+			item.Error = "update failed: " + err.Error()
+			result.Failed++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		if refreshedCreds := s.refreshOAuthToken(ctx, existing); refreshedCreds != nil {
+			existing.Credentials = refreshedCreds
+			_ = s.accountRepo.Update(ctx, existing)
+		}
+
+		item.Action = "updated"
+		result.Updated++
+		result.Items = append(result.Items, item)
+	}
+
+	// Gemini API Key -> sub2api gemini apikey
+	for _, src := range exported.Data.GeminiAPIKeyAccounts {
+		item := SyncFromCRSItemResult{
+			CRSAccountID: src.ID,
+			Kind:         src.Kind,
+			Name:         src.Name,
+		}
+
+		apiKey, _ := src.Credentials["api_key"].(string)
+		if strings.TrimSpace(apiKey) == "" {
+			item.Action = "failed"
+			item.Error = "missing api_key"
+			result.Failed++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		proxyID, err := s.mapOrCreateProxy(ctx, input.SyncProxies, &proxies, src.Proxy, fmt.Sprintf("crs-%s", src.Name))
+		if err != nil {
+			item.Action = "failed"
+			item.Error = "proxy sync failed: " + err.Error()
+			result.Failed++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		credentials := sanitizeCredentialsMap(src.Credentials)
+		if baseURL, ok := credentials["base_url"].(string); !ok || strings.TrimSpace(baseURL) == "" {
+			credentials["base_url"] = "https://generativelanguage.googleapis.com"
+		}
+
+		extra := make(map[string]any)
+		if src.Extra != nil {
+			for k, v := range src.Extra {
+				extra[k] = v
+			}
+		}
+		extra["crs_account_id"] = src.ID
+		extra["crs_kind"] = src.Kind
+		extra["crs_synced_at"] = now
+
+		existing, err := s.accountRepo.GetByCRSAccountID(ctx, src.ID)
+		if err != nil {
+			item.Action = "failed"
+			item.Error = "db lookup failed: " + err.Error()
+			result.Failed++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		if existing == nil {
+			account := &model.Account{
+				Name:        defaultName(src.Name, src.ID),
+				Platform:    model.PlatformGemini,
+				Type:        model.AccountTypeApiKey,
+				Credentials: model.JSONB(credentials),
+				Extra:       model.JSONB(extra),
+				ProxyID:     proxyID,
+				Concurrency: 3,
+				Priority:    clampPriority(src.Priority),
+				Status:      mapCRSStatus(src.IsActive, src.Status),
+				Schedulable: src.Schedulable,
+			}
+			if err := s.accountRepo.Create(ctx, account); err != nil {
+				item.Action = "failed"
+				item.Error = "create failed: " + err.Error()
+				result.Failed++
+				result.Items = append(result.Items, item)
+				continue
+			}
+			item.Action = "created"
+			result.Created++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		existing.Extra = mergeJSONB(existing.Extra, extra)
+		existing.Name = defaultName(src.Name, src.ID)
+		existing.Platform = model.PlatformGemini
+		existing.Type = model.AccountTypeApiKey
+		existing.Credentials = mergeJSONB(existing.Credentials, credentials)
+		if proxyID != nil {
+			existing.ProxyID = proxyID
+		}
+		existing.Concurrency = 3
+		existing.Priority = clampPriority(src.Priority)
+		existing.Status = mapCRSStatus(src.IsActive, src.Status)
+		existing.Schedulable = src.Schedulable
+
+		if err := s.accountRepo.Update(ctx, existing); err != nil {
+			item.Action = "failed"
+			item.Error = "update failed: " + err.Error()
+			result.Failed++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		item.Action = "updated"
+		result.Updated++
+		result.Items = append(result.Items, item)
+	}
+
 	return result, nil
 }
 
@@ -947,6 +1203,21 @@ func (s *CRSSyncService) refreshOAuthToken(ctx context.Context, account *model.A
 				}
 			}
 		}
+	case model.PlatformGemini:
+		if s.geminiOAuthService == nil {
+			return nil
+		}
+		tokenInfo, refreshErr := s.geminiOAuthService.RefreshAccountToken(ctx, account)
+		if refreshErr != nil {
+			err = refreshErr
+		} else {
+			newCredentials = s.geminiOAuthService.BuildAccountCredentials(tokenInfo)
+			for k, v := range account.Credentials {
+				if _, exists := newCredentials[k]; !exists {
+					newCredentials[k] = v
+				}
+			}
+		}
 	default:
 		return nil
 	}

backend/internal/service/pricing_service.go

@@ -393,27 +393,32 @@ func (s *PricingService) GetModelPricing(modelName string) *LiteLLMModelPricing
 		return nil
 	}
 
-	// 标准化模型名称
-	modelLower := strings.ToLower(modelName)
+	// 标准化模型名称（同时兼容 "models/xxx"、VertexAI 资源名等前缀）
+	modelLower := strings.ToLower(strings.TrimSpace(modelName))
+	lookupCandidates := s.buildModelLookupCandidates(modelLower)
 
 	// 1. 精确匹配
-	if pricing, ok := s.pricingData[modelLower]; ok {
-		return pricing
-	}
-	if pricing, ok := s.pricingData[modelName]; ok {
-		return pricing
+	for _, candidate := range lookupCandidates {
+		if candidate == "" {
+			continue
+		}
+		if pricing, ok := s.pricingData[candidate]; ok {
+			return pricing
+		}
 	}
 
 	// 2. 处理常见的模型名称变体
 	// claude-opus-4-5-20251101 -> claude-opus-4.5-20251101
-	normalized := strings.ReplaceAll(modelLower, "-4-5-", "-4.5-")
-	if pricing, ok := s.pricingData[normalized]; ok {
-		return pricing
+	for _, candidate := range lookupCandidates {
+		normalized := strings.ReplaceAll(candidate, "-4-5-", "-4.5-")
+		if pricing, ok := s.pricingData[normalized]; ok {
+			return pricing
+		}
 	}
 
 	// 3. 尝试模糊匹配（去掉版本号后缀）
 	// claude-opus-4-5-20251101 -> claude-opus-4.5
-	baseName := s.extractBaseName(modelLower)
+	baseName := s.extractBaseName(lookupCandidates[0])
 	for key, pricing := range s.pricingData {
 		keyBase := s.extractBaseName(strings.ToLower(key))
 		if keyBase == baseName {
@@ -422,18 +427,84 @@ func (s *PricingService) GetModelPricing(modelName string) *LiteLLMModelPricing
 	}
 
 	// 4. 基于模型系列匹配（Claude）
-	if pricing := s.matchByModelFamily(modelLower); pricing != nil {
+	if pricing := s.matchByModelFamily(lookupCandidates[0]); pricing != nil {
 		return pricing
 	}
 
 	// 5. OpenAI 模型回退策略
-	if strings.HasPrefix(modelLower, "gpt-") {
-		return s.matchOpenAIModel(modelLower)
+	if strings.HasPrefix(lookupCandidates[0], "gpt-") {
+		return s.matchOpenAIModel(lookupCandidates[0])
 	}
 
 	return nil
 }
 
+func (s *PricingService) buildModelLookupCandidates(modelLower string) []string {
+	// Prefer canonical model name first (this also improves billing compatibility with "models/xxx").
+	candidates := []string{
+		normalizeModelNameForPricing(modelLower),
+		modelLower,
+	}
+	for _, cand := range []string{
+		strings.TrimPrefix(modelLower, "models/"),
+		lastSegment(modelLower),
+		lastSegment(strings.TrimPrefix(modelLower, "models/")),
+	} {
+		candidates = append(candidates, cand)
+	}
+
+	seen := make(map[string]struct{}, len(candidates))
+	out := make([]string, 0, len(candidates))
+	for _, c := range candidates {
+		c = strings.TrimSpace(c)
+		if c == "" {
+			continue
+		}
+		if _, ok := seen[c]; ok {
+			continue
+		}
+		seen[c] = struct{}{}
+		out = append(out, c)
+	}
+	if len(out) == 0 {
+		return []string{modelLower}
+	}
+	return out
+}
+
+func normalizeModelNameForPricing(model string) string {
+	// Common Gemini/VertexAI forms:
+	// - models/gemini-2.0-flash-exp
+	// - publishers/google/models/gemini-1.5-pro
+	// - projects/.../locations/.../publishers/google/models/gemini-1.5-pro
+	model = strings.TrimSpace(model)
+	model = strings.TrimLeft(model, "/")
+
+	if strings.HasPrefix(model, "models/") {
+		model = strings.TrimPrefix(model, "models/")
+	}
+	if strings.HasPrefix(model, "publishers/google/models/") {
+		model = strings.TrimPrefix(model, "publishers/google/models/")
+	}
+
+	if idx := strings.LastIndex(model, "/publishers/google/models/"); idx != -1 {
+		model = model[idx+len("/publishers/google/models/"):]
+	}
+	if idx := strings.LastIndex(model, "/models/"); idx != -1 {
+		model = model[idx+len("/models/"):]
+	}
+
+	model = strings.TrimLeft(model, "/")
+	return model
+}
+
+func lastSegment(model string) string {
+	if idx := strings.LastIndex(model, "/"); idx != -1 {
+		return model[idx+1:]
+	}
+	return model
+}
+
 // extractBaseName 提取基础模型名称（去掉日期版本号）
 func (s *PricingService) extractBaseName(model string) string {
 	// 移除日期后缀 (如 -20251101, -20241022)

backend/internal/service/token_refresh_service.go

@@ -27,6 +27,7 @@ func NewTokenRefreshService(
 	accountRepo AccountRepository,
 	oauthService *OAuthService,
 	openaiOAuthService *OpenAIOAuthService,
+	geminiOAuthService *GeminiOAuthService,
 	cfg *config.Config,
 ) *TokenRefreshService {
 	s := &TokenRefreshService{
@@ -39,6 +40,7 @@ func NewTokenRefreshService(
 	s.refreshers = []TokenRefresher{
 		NewClaudeTokenRefresher(oauthService),
 		NewOpenAITokenRefresher(openaiOAuthService),
+		NewGeminiTokenRefresher(geminiOAuthService),
 	}
 
 	return s