CC 400 返回具体错误信息 && 非 CC 请求时增加 system prompt (#26)

* feat: http 400 返回具体错误

* 更新 workflows

* 优化打包/docker 构建流程

* 400 是返回 原始错误 - json 格式

* feat: 非 cc请求时补充 system

* go mod tidy

.github/workflows/release.yml

@@ -85,6 +85,19 @@ jobs:
           go-version: '1.24'
           cache-dependency-path: backend/go.sum
 
+      # Docker setup for GoReleaser
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+
       - name: Fetch tags with annotations
         run: |
           # 确保获取完整的 annotated tag 信息
@@ -117,87 +130,16 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           TAG_MESSAGE: ${{ steps.tag_message.outputs.message }}
+          GITHUB_REPO_OWNER: ${{ github.repository_owner }}
+          GITHUB_REPO_NAME: ${{ github.event.repository.name }}
+          DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
 
-  # ===========================================================================
-  # Docker Build and Push
-  # ===========================================================================
-  docker:
-    needs: [update-version, build-frontend]
-    runs-on: ubuntu-latest
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Download VERSION artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: version-file
-          path: backend/cmd/server/
-
-      - name: Download frontend artifact
-        uses: actions/download-artifact@v4
-        with:
-          name: frontend-dist
-          path: backend/internal/web/dist/
-
-      # Extract version from tag
-      - name: Extract version
-        id: version
-        run: |
-          VERSION=${GITHUB_REF#refs/tags/v}
-          echo "version=$VERSION" >> $GITHUB_OUTPUT
-          echo "Version: $VERSION"
-
-      # Set up Docker Buildx for multi-platform builds
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      # Login to DockerHub
-      - name: Login to DockerHub
-        uses: docker/login-action@v3
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
-
-      # Extract metadata for Docker
-      - name: Extract Docker metadata
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: |
-            weishaw/sub2api
-          tags: |
-            type=semver,pattern={{version}}
-            type=semver,pattern={{major}}.{{minor}}
-            type=semver,pattern={{major}}
-            type=raw,value=latest,enable={{is_default_branch}}
-
-      # Build and push Docker image
-      - name: Build and push Docker image
-        uses: docker/build-push-action@v5
-        with:
-          context: .
-          file: ./Dockerfile
-          platforms: linux/amd64,linux/arm64
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          build-args: |
-            VERSION=${{ steps.version.outputs.version }}
-            COMMIT=${{ github.sha }}
-            DATE=${{ github.event.head_commit.timestamp }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
-
-      # Update DockerHub description (optional)
+      # Update DockerHub description
       - name: Update DockerHub description
         uses: peter-evans/dockerhub-description@v4
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
-          repository: weishaw/sub2api
+          repository: ${{ secrets.DOCKERHUB_USERNAME }}/sub2api
           short-description: "Sub2API - AI API Gateway Platform"
           readme-filepath: ./deploy/DOCKER.md

.gitignore

@@ -92,6 +92,13 @@ backend/internal/web/dist/*
 # 后端运行时缓存数据
 backend/data/
 
+# ===================
+# 本地配置文件（包含敏感信息）
+# ===================
+backend/config.yaml
+deploy/config.yaml
+backend/.installed
+
 # ===================
 # 其他
 # ===================

.goreleaser.yaml

@@ -52,10 +52,58 @@ changelog:
   # 禁用自动 changelog，完全使用 tag 消息
   disable: true
 
+# Docker images
+dockers:
+  - id: amd64
+    goos: linux
+    goarch: amd64
+    image_templates:
+      - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-amd64"
+    dockerfile: Dockerfile.goreleaser
+    use: buildx
+    build_flag_templates:
+      - "--platform=linux/amd64"
+      - "--label=org.opencontainers.image.version={{ .Version }}"
+      - "--label=org.opencontainers.image.revision={{ .Commit }}"
+
+  - id: arm64
+    goos: linux
+    goarch: arm64
+    image_templates:
+      - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-arm64"
+    dockerfile: Dockerfile.goreleaser
+    use: buildx
+    build_flag_templates:
+      - "--platform=linux/arm64"
+      - "--label=org.opencontainers.image.version={{ .Version }}"
+      - "--label=org.opencontainers.image.revision={{ .Commit }}"
+
+# Docker manifests for multi-arch support
+docker_manifests:
+  - name_template: "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}"
+    image_templates:
+      - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-amd64"
+      - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-arm64"
+
+  - name_template: "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:latest"
+    image_templates:
+      - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-amd64"
+      - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-arm64"
+
+  - name_template: "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Major }}.{{ .Minor }}"
+    image_templates:
+      - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-amd64"
+      - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-arm64"
+
+  - name_template: "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Major }}"
+    image_templates:
+      - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-amd64"
+      - "{{ .Env.DOCKERHUB_USERNAME }}/sub2api:{{ .Version }}-arm64"
+
 release:
   github:
-    owner: Wei-Shaw
-    name: sub2api
+    owner: "{{ .Env.GITHUB_REPO_OWNER }}"
+    name: "{{ .Env.GITHUB_REPO_NAME }}"
   draft: false
   prerelease: auto
   name_template: "Sub2API {{.Version}}"
@@ -73,7 +121,7 @@ release:
 
     **One-line install (Linux):**
     ```bash
-    curl -sSL https://raw.githubusercontent.com/Wei-Shaw/sub2api/main/deploy/install.sh | sudo bash
+    curl -sSL https://raw.githubusercontent.com/{{ .Env.GITHUB_REPO_OWNER }}/{{ .Env.GITHUB_REPO_NAME }}/main/deploy/install.sh | sudo bash
     ```
 
     **Manual download:**
@@ -81,5 +129,5 @@ release:
 
     ## 📚 Documentation
 
-    - [GitHub Repository](https://github.com/Wei-Shaw/sub2api)
-    - [Installation Guide](https://github.com/Wei-Shaw/sub2api/blob/main/deploy/README.md)
+    - [GitHub Repository](https://github.com/{{ .Env.GITHUB_REPO_OWNER }}/{{ .Env.GITHUB_REPO_NAME }})
+    - [Installation Guide](https://github.com/{{ .Env.GITHUB_REPO_OWNER }}/{{ .Env.GITHUB_REPO_NAME }}/blob/main/deploy/README.md)

Dockerfile.goreleaser

@@ -0,0 +1,40 @@
+# =============================================================================
+# Sub2API Dockerfile for GoReleaser
+# =============================================================================
+# This Dockerfile is used by GoReleaser to build Docker images.
+# It only packages the pre-built binary, no compilation needed.
+# =============================================================================
+
+FROM alpine:3.19
+
+LABEL maintainer="Wei-Shaw <github.com/Wei-Shaw>"
+LABEL description="Sub2API - AI API Gateway Platform"
+LABEL org.opencontainers.image.source="https://github.com/Wei-Shaw/sub2api"
+
+# Install runtime dependencies
+RUN apk add --no-cache \
+    ca-certificates \
+    tzdata \
+    curl \
+    && rm -rf /var/cache/apk/*
+
+# Create non-root user
+RUN addgroup -g 1000 sub2api && \
+    adduser -u 1000 -G sub2api -s /bin/sh -D sub2api
+
+WORKDIR /app
+
+# Copy pre-built binary from GoReleaser
+COPY sub2api /app/sub2api
+
+# Create data directory
+RUN mkdir -p /app/data && chown -R sub2api:sub2api /app
+
+USER sub2api
+
+EXPOSE 8080
+
+HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
+    CMD curl -f http://localhost:${SERVER_PORT:-8080}/health || exit 1
+
+ENTRYPOINT ["/app/sub2api"]

backend/.golangci.yml

@@ -17,10 +17,17 @@ linters:
         service-no-repository:
           list-mode: original
           files:
-            - internal/service/**
+            - "**/internal/service/**"
           deny:
             - pkg: sub2api/internal/repository
               desc: "service must not import repository"
+        handler-no-repository:
+          list-mode: original
+          files:
+            - "**/internal/handler/**"
+          deny:
+            - pkg: sub2api/internal/repository
+              desc: "handler must not import repository"
     errcheck:
       # Report about not checking of errors in type assertions: `a := b.(MyStruct)`.
       # Such cases aren't reported by default.

backend/cmd/server/main.go

@@ -15,11 +15,11 @@ import (
 	"syscall"
 	"time"
 
-	"sub2api/internal/config"
-	"sub2api/internal/handler"
-	"sub2api/internal/middleware"
-	"sub2api/internal/setup"
-	"sub2api/internal/web"
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/handler"
+	"github.com/Wei-Shaw/sub2api/internal/middleware"
+	"github.com/Wei-Shaw/sub2api/internal/setup"
+	"github.com/Wei-Shaw/sub2api/internal/web"
 
 	"github.com/gin-gonic/gin"
 )

backend/cmd/server/wire.go

@@ -4,12 +4,12 @@
 package main
 
 import (
-	"sub2api/internal/config"
-	"sub2api/internal/handler"
-	"sub2api/internal/infrastructure"
-	"sub2api/internal/repository"
-	"sub2api/internal/server"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/handler"
+	"github.com/Wei-Shaw/sub2api/internal/infrastructure"
+	"github.com/Wei-Shaw/sub2api/internal/repository"
+	"github.com/Wei-Shaw/sub2api/internal/server"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"context"
 	"log"

backend/cmd/server/wire_gen.go

@@ -8,17 +8,17 @@ package main
 
 import (
 	"context"
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/handler"
+	"github.com/Wei-Shaw/sub2api/internal/handler/admin"
+	"github.com/Wei-Shaw/sub2api/internal/infrastructure"
+	"github.com/Wei-Shaw/sub2api/internal/repository"
+	"github.com/Wei-Shaw/sub2api/internal/server"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 	"github.com/redis/go-redis/v9"
 	"gorm.io/gorm"
 	"log"
 	"net/http"
-	"sub2api/internal/config"
-	"sub2api/internal/handler"
-	"sub2api/internal/handler/admin"
-	"sub2api/internal/infrastructure"
-	"sub2api/internal/repository"
-	"sub2api/internal/server"
-	"sub2api/internal/service"
 	"time"
 )
 
@@ -58,7 +58,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	apiKeyHandler := handler.NewAPIKeyHandler(apiKeyService)
 	usageLogRepository := repository.NewUsageLogRepository(db)
 	usageService := service.NewUsageService(usageLogRepository, userRepository)
-	usageHandler := handler.NewUsageHandler(usageService, usageLogRepository, apiKeyService)
+	usageHandler := handler.NewUsageHandler(usageService, apiKeyService)
 	redeemCodeRepository := repository.NewRedeemCodeRepository(db)
 	billingCache := repository.NewBillingCache(client)
 	billingCacheService := service.NewBillingCacheService(billingCache, userRepository, userSubscriptionRepository)
@@ -67,7 +67,8 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	redeemService := service.NewRedeemService(redeemCodeRepository, userRepository, subscriptionService, redeemCache, billingCacheService)
 	redeemHandler := handler.NewRedeemHandler(redeemService)
 	subscriptionHandler := handler.NewSubscriptionHandler(subscriptionService)
-	dashboardHandler := admin.NewDashboardHandler(usageLogRepository)
+	dashboardService := service.NewDashboardService(usageLogRepository)
+	dashboardHandler := admin.NewDashboardHandler(dashboardService)
 	accountRepository := repository.NewAccountRepository(db)
 	proxyRepository := repository.NewProxyRepository(db)
 	proxyExitInfoProber := repository.NewProxyExitInfoProber()
@@ -83,7 +84,10 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	accountUsageService := service.NewAccountUsageService(accountRepository, usageLogRepository, claudeUsageFetcher)
 	httpUpstream := repository.NewHTTPUpstream(configConfig)
 	accountTestService := service.NewAccountTestService(accountRepository, oAuthService, openAIOAuthService, httpUpstream)
-	accountHandler := admin.NewAccountHandler(adminService, oAuthService, openAIOAuthService, rateLimitService, accountUsageService, accountTestService, usageLogRepository)
+	concurrencyCache := repository.NewConcurrencyCache(client)
+	concurrencyService := service.NewConcurrencyService(concurrencyCache)
+	crsSyncService := service.NewCRSSyncService(accountRepository, proxyRepository, oAuthService, openAIOAuthService)
+	accountHandler := admin.NewAccountHandler(adminService, oAuthService, openAIOAuthService, rateLimitService, accountUsageService, accountTestService, concurrencyService, crsSyncService)
 	oAuthHandler := admin.NewOAuthHandler(oAuthService)
 	openAIOAuthHandler := admin.NewOpenAIOAuthHandler(openAIOAuthService, adminService)
 	proxyHandler := admin.NewProxyHandler(adminService)
@@ -95,7 +99,7 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	updateService := service.ProvideUpdateService(updateCache, gitHubReleaseClient, serviceBuildInfo)
 	systemHandler := handler.ProvideSystemHandler(updateService)
 	adminSubscriptionHandler := admin.NewSubscriptionHandler(subscriptionService)
-	adminUsageHandler := admin.NewUsageHandler(usageLogRepository, apiKeyRepository, usageService, adminService)
+	adminUsageHandler := admin.NewUsageHandler(usageService, apiKeyService, adminService)
 	adminHandlers := handler.ProvideAdminHandlers(dashboardHandler, adminUserHandler, groupHandler, accountHandler, oAuthHandler, openAIOAuthHandler, proxyHandler, adminRedeemHandler, settingHandler, systemHandler, adminSubscriptionHandler, adminUsageHandler)
 	gatewayCache := repository.NewGatewayCache(client)
 	pricingRemoteClient := repository.NewPricingRemoteClient()
@@ -107,8 +111,6 @@ func initializeApplication(buildInfo handler.BuildInfo) (*Application, error) {
 	identityCache := repository.NewIdentityCache(client)
 	identityService := service.NewIdentityService(identityCache)
 	gatewayService := service.NewGatewayService(accountRepository, usageLogRepository, userRepository, userSubscriptionRepository, gatewayCache, configConfig, billingService, rateLimitService, billingCacheService, identityService, httpUpstream)
-	concurrencyCache := repository.NewConcurrencyCache(client)
-	concurrencyService := service.NewConcurrencyService(concurrencyCache)
 	gatewayHandler := handler.NewGatewayHandler(gatewayService, userService, concurrencyService, billingCacheService)
 	openAIGatewayService := service.NewOpenAIGatewayService(accountRepository, usageLogRepository, userRepository, userSubscriptionRepository, gatewayCache, configConfig, billingService, rateLimitService, billingCacheService, httpUpstream)
 	openAIGatewayHandler := handler.NewOpenAIGatewayHandler(openAIGatewayService, concurrencyService, billingCacheService)

backend/config.yaml

@@ -1,38 +0,0 @@
-server:
-  host: "0.0.0.0"
-  port: 8080
-  mode: "debug"  # debug/release
-
-database:
-  host: "127.0.0.1"
-  port: 5432
-  user: "postgres"
-  password: "XZeRr7nkjHWhm8fw"
-  dbname: "sub2api"
-  sslmode: "disable"
-
-redis:
-  host: "127.0.0.1"
-  port: 6379
-  password: ""
-  db: 0
-
-jwt:
-  secret: "your-secret-key-change-in-production"
-  expire_hour: 24
-
-default:
-  admin_email: "admin@sub2api.com"
-  admin_password: "admin123"
-  user_concurrency: 5
-  user_balance: 0
-  api_key_prefix: "sk-"
-  rate_multiplier: 1.0
-
-# Timezone configuration (similar to PHP's date_default_timezone_set)
-# This affects ALL time operations:
-# - Database timestamps
-# - Usage statistics "today" boundary
-# - Subscription expiry times
-# Common values: Asia/Shanghai, America/New_York, Europe/London, UTC
-timezone: "Asia/Shanghai"

backend/go.mod

@@ -1,4 +1,4 @@
-module sub2api
+module github.com/Wei-Shaw/sub2api
 
 go 1.24.0
 
@@ -8,10 +8,13 @@ require (
 	github.com/gin-gonic/gin v1.9.1
 	github.com/golang-jwt/jwt/v5 v5.2.0
 	github.com/google/uuid v1.6.0
+	github.com/google/wire v0.7.0
 	github.com/imroc/req/v3 v3.56.0
 	github.com/lib/pq v1.10.9
 	github.com/redis/go-redis/v9 v9.3.0
 	github.com/spf13/viper v1.18.2
+	github.com/tidwall/gjson v1.18.0
+	github.com/tidwall/sjson v1.2.5
 	golang.org/x/crypto v0.44.0
 	golang.org/x/net v0.47.0
 	golang.org/x/term v0.37.0
@@ -35,7 +38,6 @@ require (
 	github.com/goccy/go-json v0.10.2 // indirect
 	github.com/google/go-querystring v1.1.0 // indirect
 	github.com/google/subcommands v1.2.0 // indirect
-	github.com/google/wire v0.7.0 // indirect
 	github.com/hashicorp/hcl v1.0.0 // indirect
 	github.com/icholy/digest v1.1.0 // indirect
 	github.com/jackc/pgpassfile v1.0.0 // indirect
@@ -64,6 +66,8 @@ require (
 	github.com/spf13/cast v1.6.0 // indirect
 	github.com/spf13/pflag v1.0.5 // indirect
 	github.com/subosito/gotenv v1.6.0 // indirect
+	github.com/tidwall/match v1.1.1 // indirect
+	github.com/tidwall/pretty v1.2.0 // indirect
 	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
 	github.com/ugorji/go/codec v1.2.11 // indirect
 	go.uber.org/atomic v1.9.0 // indirect

backend/go.sum

@@ -139,6 +139,15 @@ github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsT
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
 github.com/subosito/gotenv v1.6.0/go.mod h1:Dk4QP5c2W3ibzajGcXpNraDfq2IrhjMIvMSWPKKo0FU=
+github.com/tidwall/gjson v1.14.2/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
+github.com/tidwall/gjson v1.18.0 h1:FIDeeyB800efLX89e5a8Y0BNH+LOngJyGrIWxG2FKQY=
+github.com/tidwall/gjson v1.18.0/go.mod h1:/wbyibRr2FHMks5tjHJ5F8dMZh3AcwJEMf5vlfC0lxk=
+github.com/tidwall/match v1.1.1 h1:+Ho715JplO36QYgwN9PGYNhgZvoUSc9X2c80KVTi+GA=
+github.com/tidwall/match v1.1.1/go.mod h1:eRSPERbgtNPcGhD8UCthc6PmLEQXEWd3PRB5JTxsfmM=
+github.com/tidwall/pretty v1.2.0 h1:RWIZEg2iJ8/g6fDDYzMpobmaoGh5OLl4AXtGUGPcqCs=
+github.com/tidwall/pretty v1.2.0/go.mod h1:ITEVvHYasfjBbM0u2Pg8T2nJnzm8xPwvNhhsoaGGjNU=
+github.com/tidwall/sjson v1.2.5 h1:kLy8mja+1c9jlljvWTlSazM7cKDRfJuR/bOJhcY5NcY=
+github.com/tidwall/sjson v1.2.5/go.mod h1:Fvgq9kS/6ociJEDnK0Fk1cpYF4FIW6ZF7LAe+6jwd28=
 github.com/twitchyliquid64/golang-asm v0.15.1 h1:SU5vSMR7hnwNxj24w34ZyCi/FmDZTkS4MhqMhdFk5YI=
 github.com/twitchyliquid64/golang-asm v0.15.1/go.mod h1:a1lVb/DtPvCB8fslRZhAngC2+aY1QWCk3Cedj/Gdt08=
 github.com/ugorji/go/codec v1.2.11 h1:BMaWp1Bb6fHwEtbplGBGJ498wD+LKlNSl25MjdZY4dU=

backend/internal/handler/admin/account_handler.go

@@ -3,12 +3,12 @@ package admin
 import (
 	"strconv"
 
-	"sub2api/internal/pkg/claude"
-	"sub2api/internal/pkg/openai"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/pkg/timezone"
-	"sub2api/internal/repository"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/claude"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/timezone"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )
@@ -33,11 +33,21 @@ type AccountHandler struct {
 	rateLimitService    *service.RateLimitService
 	accountUsageService *service.AccountUsageService
 	accountTestService  *service.AccountTestService
-	usageLogRepo        *repository.UsageLogRepository
+	concurrencyService  *service.ConcurrencyService
+	crsSyncService      *service.CRSSyncService
 }
 
 // NewAccountHandler creates a new admin account handler
-func NewAccountHandler(adminService service.AdminService, oauthService *service.OAuthService, openaiOAuthService *service.OpenAIOAuthService, rateLimitService *service.RateLimitService, accountUsageService *service.AccountUsageService, accountTestService *service.AccountTestService, usageLogRepo *repository.UsageLogRepository) *AccountHandler {
+func NewAccountHandler(
+	adminService service.AdminService,
+	oauthService *service.OAuthService,
+	openaiOAuthService *service.OpenAIOAuthService,
+	rateLimitService *service.RateLimitService,
+	accountUsageService *service.AccountUsageService,
+	accountTestService *service.AccountTestService,
+	concurrencyService *service.ConcurrencyService,
+	crsSyncService *service.CRSSyncService,
+) *AccountHandler {
 	return &AccountHandler{
 		adminService:        adminService,
 		oauthService:        oauthService,
@@ -45,7 +55,8 @@ func NewAccountHandler(adminService service.AdminService, oauthService *service.
 		rateLimitService:    rateLimitService,
 		accountUsageService: accountUsageService,
 		accountTestService:  accountTestService,
-		usageLogRepo:        usageLogRepo,
+		concurrencyService:  concurrencyService,
+		crsSyncService:      crsSyncService,
 	}
 }
 
@@ -76,6 +87,25 @@ type UpdateAccountRequest struct {
 	GroupIDs    *[]int64       `json:"group_ids"`
 }
 
+// BulkUpdateAccountsRequest represents the payload for bulk editing accounts
+type BulkUpdateAccountsRequest struct {
+	AccountIDs  []int64        `json:"account_ids" binding:"required,min=1"`
+	Name        string         `json:"name"`
+	ProxyID     *int64         `json:"proxy_id"`
+	Concurrency *int           `json:"concurrency"`
+	Priority    *int           `json:"priority"`
+	Status      string         `json:"status" binding:"omitempty,oneof=active inactive error"`
+	GroupIDs    *[]int64       `json:"group_ids"`
+	Credentials map[string]any `json:"credentials"`
+	Extra       map[string]any `json:"extra"`
+}
+
+// AccountWithConcurrency extends Account with real-time concurrency info
+type AccountWithConcurrency struct {
+	*model.Account
+	CurrentConcurrency int `json:"current_concurrency"`
+}
+
 // List handles listing all accounts with pagination
 // GET /api/v1/admin/accounts
 func (h *AccountHandler) List(c *gin.Context) {
@@ -91,7 +121,28 @@ func (h *AccountHandler) List(c *gin.Context) {
 		return
 	}
 
-	response.Paginated(c, accounts, total, page, pageSize)
+	// Get current concurrency counts for all accounts
+	accountIDs := make([]int64, len(accounts))
+	for i, acc := range accounts {
+		accountIDs[i] = acc.ID
+	}
+
+	concurrencyCounts, err := h.concurrencyService.GetAccountConcurrencyBatch(c.Request.Context(), accountIDs)
+	if err != nil {
+		// Log error but don't fail the request, just use 0 for all
+		concurrencyCounts = make(map[int64]int)
+	}
+
+	// Build response with concurrency info
+	result := make([]AccountWithConcurrency, len(accounts))
+	for i := range accounts {
+		result[i] = AccountWithConcurrency{
+			Account:            &accounts[i],
+			CurrentConcurrency: concurrencyCounts[accounts[i].ID],
+		}
+	}
+
+	response.Paginated(c, result, total, page, pageSize)
 }
 
 // GetByID handles getting an account by ID
@@ -197,6 +248,13 @@ type TestAccountRequest struct {
 	ModelID string `json:"model_id"`
 }
 
+type SyncFromCRSRequest struct {
+	BaseURL     string `json:"base_url" binding:"required"`
+	Username    string `json:"username" binding:"required"`
+	Password    string `json:"password" binding:"required"`
+	SyncProxies *bool  `json:"sync_proxies"`
+}
+
 // Test handles testing account connectivity with SSE streaming
 // POST /api/v1/admin/accounts/:id/test
 func (h *AccountHandler) Test(c *gin.Context) {
@@ -217,6 +275,35 @@ func (h *AccountHandler) Test(c *gin.Context) {
 	}
 }
 
+// SyncFromCRS handles syncing accounts from claude-relay-service (CRS)
+// POST /api/v1/admin/accounts/sync/crs
+func (h *AccountHandler) SyncFromCRS(c *gin.Context) {
+	var req SyncFromCRSRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "Invalid request: "+err.Error())
+		return
+	}
+
+	// Default to syncing proxies (can be disabled by explicitly setting false)
+	syncProxies := true
+	if req.SyncProxies != nil {
+		syncProxies = *req.SyncProxies
+	}
+
+	result, err := h.crsSyncService.SyncFromCRS(c.Request.Context(), service.SyncFromCRSInput{
+		BaseURL:     req.BaseURL,
+		Username:    req.Username,
+		Password:    req.Password,
+		SyncProxies: syncProxies,
+	})
+	if err != nil {
+		response.BadRequest(c, "Sync failed: "+err.Error())
+		return
+	}
+
+	response.Success(c, result)
+}
+
 // Refresh handles refreshing account credentials
 // POST /api/v1/admin/accounts/:id/refresh
 func (h *AccountHandler) Refresh(c *gin.Context) {
@@ -314,7 +401,7 @@ func (h *AccountHandler) GetStats(c *gin.Context) {
 	endTime := timezone.StartOfDay(now.AddDate(0, 0, 1))
 	startTime := timezone.StartOfDay(now.AddDate(0, 0, -days+1))
 
-	stats, err := h.usageLogRepo.GetAccountUsageStats(c.Request.Context(), accountID, startTime, endTime)
+	stats, err := h.accountUsageService.GetAccountUsageStats(c.Request.Context(), accountID, startTime, endTime)
 	if err != nil {
 		response.InternalError(c, "Failed to get account stats: "+err.Error())
 		return
@@ -360,6 +447,136 @@ func (h *AccountHandler) BatchCreate(c *gin.Context) {
 	})
 }
 
+// BatchUpdateCredentialsRequest represents batch credentials update request
+type BatchUpdateCredentialsRequest struct {
+	AccountIDs []int64 `json:"account_ids" binding:"required,min=1"`
+	Field      string  `json:"field" binding:"required,oneof=account_uuid org_uuid intercept_warmup_requests"`
+	Value      any     `json:"value"`
+}
+
+// BatchUpdateCredentials handles batch updating credentials fields
+// POST /api/v1/admin/accounts/batch-update-credentials
+func (h *AccountHandler) BatchUpdateCredentials(c *gin.Context) {
+	var req BatchUpdateCredentialsRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "Invalid request: "+err.Error())
+		return
+	}
+
+	// Validate value type based on field
+	if req.Field == "intercept_warmup_requests" {
+		// Must be boolean
+		if _, ok := req.Value.(bool); !ok {
+			response.BadRequest(c, "intercept_warmup_requests must be boolean")
+			return
+		}
+	} else {
+		// account_uuid and org_uuid can be string or null
+		if req.Value != nil {
+			if _, ok := req.Value.(string); !ok {
+				response.BadRequest(c, req.Field+" must be string or null")
+				return
+			}
+		}
+	}
+
+	ctx := c.Request.Context()
+	success := 0
+	failed := 0
+	results := []gin.H{}
+
+	for _, accountID := range req.AccountIDs {
+		// Get account
+		account, err := h.adminService.GetAccount(ctx, accountID)
+		if err != nil {
+			failed++
+			results = append(results, gin.H{
+				"account_id": accountID,
+				"success":    false,
+				"error":      "Account not found",
+			})
+			continue
+		}
+
+		// Update credentials field
+		if account.Credentials == nil {
+			account.Credentials = make(map[string]any)
+		}
+
+		account.Credentials[req.Field] = req.Value
+
+		// Update account
+		updateInput := &service.UpdateAccountInput{
+			Credentials: account.Credentials,
+		}
+
+		_, err = h.adminService.UpdateAccount(ctx, accountID, updateInput)
+		if err != nil {
+			failed++
+			results = append(results, gin.H{
+				"account_id": accountID,
+				"success":    false,
+				"error":      err.Error(),
+			})
+			continue
+		}
+
+		success++
+		results = append(results, gin.H{
+			"account_id": accountID,
+			"success":    true,
+		})
+	}
+
+	response.Success(c, gin.H{
+		"success": success,
+		"failed":  failed,
+		"results": results,
+	})
+}
+
+// BulkUpdate handles bulk updating accounts with selected fields/credentials.
+// POST /api/v1/admin/accounts/bulk-update
+func (h *AccountHandler) BulkUpdate(c *gin.Context) {
+	var req BulkUpdateAccountsRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "Invalid request: "+err.Error())
+		return
+	}
+
+	hasUpdates := req.Name != "" ||
+		req.ProxyID != nil ||
+		req.Concurrency != nil ||
+		req.Priority != nil ||
+		req.Status != "" ||
+		req.GroupIDs != nil ||
+		len(req.Credentials) > 0 ||
+		len(req.Extra) > 0
+
+	if !hasUpdates {
+		response.BadRequest(c, "No updates provided")
+		return
+	}
+
+	result, err := h.adminService.BulkUpdateAccounts(c.Request.Context(), &service.BulkUpdateAccountsInput{
+		AccountIDs:  req.AccountIDs,
+		Name:        req.Name,
+		ProxyID:     req.ProxyID,
+		Concurrency: req.Concurrency,
+		Priority:    req.Priority,
+		Status:      req.Status,
+		GroupIDs:    req.GroupIDs,
+		Credentials: req.Credentials,
+		Extra:       req.Extra,
+	})
+	if err != nil {
+		response.InternalError(c, "Failed to bulk update accounts: "+err.Error())
+		return
+	}
+
+	response.Success(c, result)
+}
+
 // ========== OAuth Handlers ==========
 
 // GenerateAuthURLRequest represents the request for generating auth URL

backend/internal/handler/admin/dashboard_handler.go

@@ -1,10 +1,10 @@
 package admin
 
 import (
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/timezone"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 	"strconv"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/pkg/timezone"
-	"sub2api/internal/repository"
 	"time"
 
 	"github.com/gin-gonic/gin"
@@ -12,15 +12,15 @@ import (
 
 // DashboardHandler handles admin dashboard statistics
 type DashboardHandler struct {
-	usageRepo *repository.UsageLogRepository
-	startTime time.Time // Server start time for uptime calculation
+	dashboardService *service.DashboardService
+	startTime        time.Time // Server start time for uptime calculation
 }
 
 // NewDashboardHandler creates a new admin dashboard handler
-func NewDashboardHandler(usageRepo *repository.UsageLogRepository) *DashboardHandler {
+func NewDashboardHandler(dashboardService *service.DashboardService) *DashboardHandler {
 	return &DashboardHandler{
-		usageRepo: usageRepo,
-		startTime: time.Now(),
+		dashboardService: dashboardService,
+		startTime:        time.Now(),
 	}
 }
 
@@ -58,7 +58,7 @@ func parseTimeRange(c *gin.Context) (time.Time, time.Time) {
 // GetStats handles getting dashboard statistics
 // GET /api/v1/admin/dashboard/stats
 func (h *DashboardHandler) GetStats(c *gin.Context) {
-	stats, err := h.usageRepo.GetDashboardStats(c.Request.Context())
+	stats, err := h.dashboardService.GetDashboardStats(c.Request.Context())
 	if err != nil {
 		response.Error(c, 500, "Failed to get dashboard statistics")
 		return
@@ -107,6 +107,10 @@ func (h *DashboardHandler) GetStats(c *gin.Context) {
 		// 系统运行统计
 		"average_duration_ms": stats.AverageDurationMs,
 		"uptime":              uptime,
+
+		// 性能指标
+		"rpm": stats.Rpm,
+		"tpm": stats.Tpm,
 	})
 }
 
@@ -142,7 +146,7 @@ func (h *DashboardHandler) GetUsageTrend(c *gin.Context) {
 		}
 	}
 
-	trend, err := h.usageRepo.GetUsageTrendWithFilters(c.Request.Context(), startTime, endTime, granularity, userID, apiKeyID)
+	trend, err := h.dashboardService.GetUsageTrendWithFilters(c.Request.Context(), startTime, endTime, granularity, userID, apiKeyID)
 	if err != nil {
 		response.Error(c, 500, "Failed to get usage trend")
 		return
@@ -175,7 +179,7 @@ func (h *DashboardHandler) GetModelStats(c *gin.Context) {
 		}
 	}
 
-	stats, err := h.usageRepo.GetModelStatsWithFilters(c.Request.Context(), startTime, endTime, userID, apiKeyID, 0)
+	stats, err := h.dashboardService.GetModelStatsWithFilters(c.Request.Context(), startTime, endTime, userID, apiKeyID)
 	if err != nil {
 		response.Error(c, 500, "Failed to get model statistics")
 		return
@@ -200,7 +204,7 @@ func (h *DashboardHandler) GetApiKeyUsageTrend(c *gin.Context) {
 		limit = 5
 	}
 
-	trend, err := h.usageRepo.GetApiKeyUsageTrend(c.Request.Context(), startTime, endTime, granularity, limit)
+	trend, err := h.dashboardService.GetApiKeyUsageTrend(c.Request.Context(), startTime, endTime, granularity, limit)
 	if err != nil {
 		response.Error(c, 500, "Failed to get API key usage trend")
 		return
@@ -226,7 +230,7 @@ func (h *DashboardHandler) GetUserUsageTrend(c *gin.Context) {
 		limit = 12
 	}
 
-	trend, err := h.usageRepo.GetUserUsageTrend(c.Request.Context(), startTime, endTime, granularity, limit)
+	trend, err := h.dashboardService.GetUserUsageTrend(c.Request.Context(), startTime, endTime, granularity, limit)
 	if err != nil {
 		response.Error(c, 500, "Failed to get user usage trend")
 		return
@@ -259,7 +263,7 @@ func (h *DashboardHandler) GetBatchUsersUsage(c *gin.Context) {
 		return
 	}
 
-	stats, err := h.usageRepo.GetBatchUserUsageStats(c.Request.Context(), req.UserIDs)
+	stats, err := h.dashboardService.GetBatchUserUsageStats(c.Request.Context(), req.UserIDs)
 	if err != nil {
 		response.Error(c, 500, "Failed to get user usage stats")
 		return
@@ -287,7 +291,7 @@ func (h *DashboardHandler) GetBatchApiKeysUsage(c *gin.Context) {
 		return
 	}
 
-	stats, err := h.usageRepo.GetBatchApiKeyUsageStats(c.Request.Context(), req.ApiKeyIDs)
+	stats, err := h.dashboardService.GetBatchApiKeyUsageStats(c.Request.Context(), req.ApiKeyIDs)
 	if err != nil {
 		response.Error(c, 500, "Failed to get API key usage stats")
 		return

backend/internal/handler/admin/group_handler.go

@@ -3,9 +3,9 @@ package admin
 import (
 	"strconv"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/admin/openai_oauth_handler.go

@@ -3,8 +3,8 @@ package admin
 import (
 	"strconv"
 
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/admin/proxy_handler.go

@@ -4,8 +4,8 @@ import (
 	"strconv"
 	"strings"
 
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/admin/redeem_handler.go

@@ -6,8 +6,8 @@ import (
 	"fmt"
 	"strconv"
 
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/admin/setting_handler.go

@@ -1,9 +1,9 @@
 package admin
 
 import (
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )
@@ -60,6 +60,7 @@ type UpdateSettingsRequest struct {
 	SiteSubtitle string `json:"site_subtitle"`
 	ApiBaseUrl   string `json:"api_base_url"`
 	ContactInfo  string `json:"contact_info"`
+	DocUrl       string `json:"doc_url"`
 
 	// 默认配置
 	DefaultConcurrency int     `json:"default_concurrency"`
@@ -104,6 +105,7 @@ func (h *SettingHandler) UpdateSettings(c *gin.Context) {
 		SiteSubtitle:        req.SiteSubtitle,
 		ApiBaseUrl:          req.ApiBaseUrl,
 		ContactInfo:         req.ContactInfo,
+		DocUrl:              req.DocUrl,
 		DefaultConcurrency:  req.DefaultConcurrency,
 		DefaultBalance:      req.DefaultBalance,
 	}

backend/internal/handler/admin/subscription_handler.go

@@ -3,10 +3,10 @@ package admin
 import (
 	"strconv"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/admin/system_handler.go

@@ -4,9 +4,9 @@ import (
 	"net/http"
 	"time"
 
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/pkg/sysutil"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/sysutil"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/admin/usage_handler.go

@@ -4,35 +4,32 @@ import (
 	"strconv"
 	"time"
 
-	"sub2api/internal/pkg/pagination"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/pkg/timezone"
-	"sub2api/internal/repository"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"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/gin-gonic/gin"
 )
 
 // UsageHandler handles admin usage-related requests
 type UsageHandler struct {
-	usageRepo    *repository.UsageLogRepository
-	apiKeyRepo   *repository.ApiKeyRepository
-	usageService *service.UsageService
-	adminService service.AdminService
+	usageService  *service.UsageService
+	apiKeyService *service.ApiKeyService
+	adminService  service.AdminService
 }
 
 // NewUsageHandler creates a new admin usage handler
 func NewUsageHandler(
-	usageRepo *repository.UsageLogRepository,
-	apiKeyRepo *repository.ApiKeyRepository,
 	usageService *service.UsageService,
+	apiKeyService *service.ApiKeyService,
 	adminService service.AdminService,
 ) *UsageHandler {
 	return &UsageHandler{
-		usageRepo:    usageRepo,
-		apiKeyRepo:   apiKeyRepo,
-		usageService: usageService,
-		adminService: adminService,
+		usageService:  usageService,
+		apiKeyService: apiKeyService,
+		adminService:  adminService,
 	}
 }
 
@@ -84,14 +81,14 @@ func (h *UsageHandler) List(c *gin.Context) {
 	}
 
 	params := pagination.PaginationParams{Page: page, PageSize: pageSize}
-	filters := repository.UsageLogFilters{
+	filters := usagestats.UsageLogFilters{
 		UserID:    userID,
 		ApiKeyID:  apiKeyID,
 		StartTime: startTime,
 		EndTime:   endTime,
 	}
 
-	records, result, err := h.usageRepo.ListWithFilters(c.Request.Context(), params, filters)
+	records, result, err := h.usageService.ListWithFilters(c.Request.Context(), params, filters)
 	if err != nil {
 		response.InternalError(c, "Failed to list usage records: "+err.Error())
 		return
@@ -179,7 +176,7 @@ func (h *UsageHandler) Stats(c *gin.Context) {
 	}
 
 	// Get global stats
-	stats, err := h.usageRepo.GetGlobalStats(c.Request.Context(), startTime, endTime)
+	stats, err := h.usageService.GetGlobalStats(c.Request.Context(), startTime, endTime)
 	if err != nil {
 		response.InternalError(c, "Failed to get usage statistics: "+err.Error())
 		return
@@ -237,7 +234,7 @@ func (h *UsageHandler) SearchApiKeys(c *gin.Context) {
 		userID = id
 	}
 
-	keys, err := h.apiKeyRepo.SearchApiKeys(c.Request.Context(), userID, keyword, 30)
+	keys, err := h.apiKeyService.SearchApiKeys(c.Request.Context(), userID, keyword, 30)
 	if err != nil {
 		response.InternalError(c, "Failed to search API keys: "+err.Error())
 		return

backend/internal/handler/admin/user_handler.go

@@ -3,8 +3,8 @@ package admin
 import (
 	"strconv"
 
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/api_key_handler.go

@@ -3,10 +3,10 @@ package handler
 import (
 	"strconv"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/auth_handler.go

@@ -1,9 +1,9 @@
 package handler
 
 import (
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/gateway_handler.go

@@ -10,11 +10,11 @@ import (
 	"strings"
 	"time"
 
-	"sub2api/internal/middleware"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/claude"
-	"sub2api/internal/pkg/openai"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/middleware"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/claude"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/gateway_helper.go

@@ -6,8 +6,8 @@ import (
 	"net/http"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/handler.go

@@ -1,7 +1,7 @@
 package handler
 
 import (
-	"sub2api/internal/handler/admin"
+	"github.com/Wei-Shaw/sub2api/internal/handler/admin"
 )
 
 // AdminHandlers contains all admin-related HTTP handlers

backend/internal/handler/openai_gateway_handler.go

@@ -9,9 +9,9 @@ import (
 	"net/http"
 	"time"
 
-	"sub2api/internal/middleware"
-	"sub2api/internal/pkg/openai"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/middleware"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/redeem_handler.go

@@ -1,9 +1,9 @@
 package handler
 
 import (
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/setting_handler.go

@@ -1,8 +1,8 @@
 package handler
 
 import (
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/subscription_handler.go

@@ -1,9 +1,9 @@
 package handler
 
 import (
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/usage_handler.go

@@ -4,12 +4,11 @@ import (
 	"strconv"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/pkg/timezone"
-	"sub2api/internal/repository"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/timezone"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )
@@ -17,15 +16,13 @@ import (
 // UsageHandler handles usage-related requests
 type UsageHandler struct {
 	usageService  *service.UsageService
-	usageRepo     *repository.UsageLogRepository
 	apiKeyService *service.ApiKeyService
 }
 
 // NewUsageHandler creates a new UsageHandler
-func NewUsageHandler(usageService *service.UsageService, usageRepo *repository.UsageLogRepository, apiKeyService *service.ApiKeyService) *UsageHandler {
+func NewUsageHandler(usageService *service.UsageService, apiKeyService *service.ApiKeyService) *UsageHandler {
 	return &UsageHandler{
 		usageService:  usageService,
-		usageRepo:     usageRepo,
 		apiKeyService: apiKeyService,
 	}
 }
@@ -260,7 +257,7 @@ func (h *UsageHandler) DashboardStats(c *gin.Context) {
 		return
 	}
 
-	stats, err := h.usageRepo.GetUserDashboardStats(c.Request.Context(), user.ID)
+	stats, err := h.usageService.GetUserDashboardStats(c.Request.Context(), user.ID)
 	if err != nil {
 		response.InternalError(c, "Failed to get dashboard statistics")
 		return
@@ -287,7 +284,7 @@ func (h *UsageHandler) DashboardTrend(c *gin.Context) {
 	startTime, endTime := parseUserTimeRange(c)
 	granularity := c.DefaultQuery("granularity", "day")
 
-	trend, err := h.usageRepo.GetUserUsageTrendByUserID(c.Request.Context(), user.ID, startTime, endTime, granularity)
+	trend, err := h.usageService.GetUserUsageTrendByUserID(c.Request.Context(), user.ID, startTime, endTime, granularity)
 	if err != nil {
 		response.InternalError(c, "Failed to get usage trend")
 		return
@@ -318,7 +315,7 @@ func (h *UsageHandler) DashboardModels(c *gin.Context) {
 
 	startTime, endTime := parseUserTimeRange(c)
 
-	stats, err := h.usageRepo.GetUserModelStats(c.Request.Context(), user.ID, startTime, endTime)
+	stats, err := h.usageService.GetUserModelStats(c.Request.Context(), user.ID, startTime, endTime)
 	if err != nil {
 		response.InternalError(c, "Failed to get model statistics")
 		return
@@ -387,7 +384,7 @@ func (h *UsageHandler) DashboardApiKeysUsage(c *gin.Context) {
 		return
 	}
 
-	stats, err := h.usageRepo.GetBatchApiKeyUsageStats(c.Request.Context(), validApiKeyIDs)
+	stats, err := h.usageService.GetBatchApiKeyUsageStats(c.Request.Context(), validApiKeyIDs)
 	if err != nil {
 		response.InternalError(c, "Failed to get API key usage stats")
 		return

backend/internal/handler/user_handler.go

@@ -1,9 +1,9 @@
 package handler
 
 import (
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/response"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/response"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/handler/wire.go

@@ -1,8 +1,8 @@
 package handler
 
 import (
-	"sub2api/internal/handler/admin"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/handler/admin"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/google/wire"
 )

backend/internal/infrastructure/database.go

@@ -1,9 +1,9 @@
 package infrastructure
 
 import (
-	"sub2api/internal/config"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/timezone"
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/timezone"
 
 	"gorm.io/driver/postgres"
 	"gorm.io/gorm"

backend/internal/infrastructure/redis.go

@@ -1,7 +1,7 @@
 package infrastructure
 
 import (
-	"sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/config"
 
 	"github.com/redis/go-redis/v9"
 )

backend/internal/infrastructure/wire.go

@@ -1,7 +1,7 @@
 package infrastructure
 
 import (
-	"sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/config"
 
 	"github.com/google/wire"
 	"github.com/redis/go-redis/v9"

backend/internal/middleware/admin_auth.go

@@ -3,9 +3,9 @@ package middleware
 import (
 	"context"
 	"crypto/subtle"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 	"strings"
-	"sub2api/internal/model"
-	"sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/middleware/admin_only.go

@@ -1,7 +1,7 @@
 package middleware
 
 import (
-	"sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/model"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/middleware/api_key_auth.go

@@ -3,9 +3,9 @@ package middleware
 import (
 	"context"
 	"errors"
+	"github.com/Wei-Shaw/sub2api/internal/model"
 	"log"
 	"strings"
-	"sub2api/internal/model"
 
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"

backend/internal/middleware/jwt_auth.go

@@ -2,9 +2,9 @@ package middleware
 
 import (
 	"context"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 	"strings"
-	"sub2api/internal/model"
-	"sub2api/internal/service"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/model/setting.go

@@ -42,6 +42,7 @@ const (
 	SettingKeySiteSubtitle = "site_subtitle" // 网站副标题
 	SettingKeyApiBaseUrl   = "api_base_url"  // API端点地址（用于客户端配置和导入）
 	SettingKeyContactInfo  = "contact_info"  // 客服联系方式
+	SettingKeyDocUrl       = "doc_url"       // 文档链接
 
 	// 默认配置
 	SettingKeyDefaultConcurrency = "default_concurrency" // 新用户默认并发量
@@ -80,6 +81,7 @@ type SystemSettings struct {
 	SiteSubtitle string `json:"site_subtitle"`
 	ApiBaseUrl   string `json:"api_base_url"`
 	ContactInfo  string `json:"contact_info"`
+	DocUrl       string `json:"doc_url"`
 
 	// 默认配置
 	DefaultConcurrency int     `json:"default_concurrency"`
@@ -97,5 +99,6 @@ type PublicSettings struct {
 	SiteSubtitle        string `json:"site_subtitle"`
 	ApiBaseUrl          string `json:"api_base_url"`
 	ContactInfo         string `json:"contact_info"`
+	DocUrl              string `json:"doc_url"`
 	Version             string `json:"version"`
 }

backend/internal/pkg/usagestats/usage_log_types.go

@@ -0,0 +1,209 @@
+package usagestats
+
+import "time"
+
+// DashboardStats 仪表盘统计
+type DashboardStats struct {
+	// 用户统计
+	TotalUsers    int64 `json:"total_users"`
+	TodayNewUsers int64 `json:"today_new_users"` // 今日新增用户数
+	ActiveUsers   int64 `json:"active_users"`    // 今日有请求的用户数
+
+	// API Key 统计
+	TotalApiKeys  int64 `json:"total_api_keys"`
+	ActiveApiKeys int64 `json:"active_api_keys"` // 状态为 active 的 API Key 数
+
+	// 账户统计
+	TotalAccounts     int64 `json:"total_accounts"`
+	NormalAccounts    int64 `json:"normal_accounts"`    // 正常账户数 (schedulable=true, status=active)
+	ErrorAccounts     int64 `json:"error_accounts"`     // 异常账户数 (status=error)
+	RateLimitAccounts int64 `json:"ratelimit_accounts"` // 限流账户数
+	OverloadAccounts  int64 `json:"overload_accounts"`  // 过载账户数
+
+	// 累计 Token 使用统计
+	TotalRequests            int64   `json:"total_requests"`
+	TotalInputTokens         int64   `json:"total_input_tokens"`
+	TotalOutputTokens        int64   `json:"total_output_tokens"`
+	TotalCacheCreationTokens int64   `json:"total_cache_creation_tokens"`
+	TotalCacheReadTokens     int64   `json:"total_cache_read_tokens"`
+	TotalTokens              int64   `json:"total_tokens"`
+	TotalCost                float64 `json:"total_cost"`        // 累计标准计费
+	TotalActualCost          float64 `json:"total_actual_cost"` // 累计实际扣除
+
+	// 今日 Token 使用统计
+	TodayRequests            int64   `json:"today_requests"`
+	TodayInputTokens         int64   `json:"today_input_tokens"`
+	TodayOutputTokens        int64   `json:"today_output_tokens"`
+	TodayCacheCreationTokens int64   `json:"today_cache_creation_tokens"`
+	TodayCacheReadTokens     int64   `json:"today_cache_read_tokens"`
+	TodayTokens              int64   `json:"today_tokens"`
+	TodayCost                float64 `json:"today_cost"`        // 今日标准计费
+	TodayActualCost          float64 `json:"today_actual_cost"` // 今日实际扣除
+
+	// 系统运行统计
+	AverageDurationMs float64 `json:"average_duration_ms"` // 平均响应时间
+
+	// 性能指标
+	Rpm int64 `json:"rpm"` // 近5分钟平均每分钟请求数
+	Tpm int64 `json:"tpm"` // 近5分钟平均每分钟Token数
+}
+
+// TrendDataPoint represents a single point in trend data
+type TrendDataPoint struct {
+	Date         string  `json:"date"`
+	Requests     int64   `json:"requests"`
+	InputTokens  int64   `json:"input_tokens"`
+	OutputTokens int64   `json:"output_tokens"`
+	CacheTokens  int64   `json:"cache_tokens"`
+	TotalTokens  int64   `json:"total_tokens"`
+	Cost         float64 `json:"cost"`        // 标准计费
+	ActualCost   float64 `json:"actual_cost"` // 实际扣除
+}
+
+// ModelStat represents usage statistics for a single model
+type ModelStat struct {
+	Model        string  `json:"model"`
+	Requests     int64   `json:"requests"`
+	InputTokens  int64   `json:"input_tokens"`
+	OutputTokens int64   `json:"output_tokens"`
+	TotalTokens  int64   `json:"total_tokens"`
+	Cost         float64 `json:"cost"`        // 标准计费
+	ActualCost   float64 `json:"actual_cost"` // 实际扣除
+}
+
+// UserUsageTrendPoint represents user usage trend data point
+type UserUsageTrendPoint struct {
+	Date       string  `json:"date"`
+	UserID     int64   `json:"user_id"`
+	Email      string  `json:"email"`
+	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
+}
+
+// ApiKeyUsageTrendPoint represents API key usage trend data point
+type ApiKeyUsageTrendPoint struct {
+	Date     string `json:"date"`
+	ApiKeyID int64  `json:"api_key_id"`
+	KeyName  string `json:"key_name"`
+	Requests int64  `json:"requests"`
+	Tokens   int64  `json:"tokens"`
+}
+
+// UserDashboardStats 用户仪表盘统计
+type UserDashboardStats struct {
+	// API Key 统计
+	TotalApiKeys  int64 `json:"total_api_keys"`
+	ActiveApiKeys int64 `json:"active_api_keys"`
+
+	// 累计 Token 使用统计
+	TotalRequests            int64   `json:"total_requests"`
+	TotalInputTokens         int64   `json:"total_input_tokens"`
+	TotalOutputTokens        int64   `json:"total_output_tokens"`
+	TotalCacheCreationTokens int64   `json:"total_cache_creation_tokens"`
+	TotalCacheReadTokens     int64   `json:"total_cache_read_tokens"`
+	TotalTokens              int64   `json:"total_tokens"`
+	TotalCost                float64 `json:"total_cost"`        // 累计标准计费
+	TotalActualCost          float64 `json:"total_actual_cost"` // 累计实际扣除
+
+	// 今日 Token 使用统计
+	TodayRequests            int64   `json:"today_requests"`
+	TodayInputTokens         int64   `json:"today_input_tokens"`
+	TodayOutputTokens        int64   `json:"today_output_tokens"`
+	TodayCacheCreationTokens int64   `json:"today_cache_creation_tokens"`
+	TodayCacheReadTokens     int64   `json:"today_cache_read_tokens"`
+	TodayTokens              int64   `json:"today_tokens"`
+	TodayCost                float64 `json:"today_cost"`        // 今日标准计费
+	TodayActualCost          float64 `json:"today_actual_cost"` // 今日实际扣除
+
+	// 性能统计
+	AverageDurationMs float64 `json:"average_duration_ms"`
+
+	// 性能指标
+	Rpm int64 `json:"rpm"` // 近5分钟平均每分钟请求数
+	Tpm int64 `json:"tpm"` // 近5分钟平均每分钟Token数
+}
+
+// UsageLogFilters represents filters for usage log queries
+type UsageLogFilters struct {
+	UserID    int64
+	ApiKeyID  int64
+	StartTime *time.Time
+	EndTime   *time.Time
+}
+
+// UsageStats represents usage statistics
+type UsageStats struct {
+	TotalRequests     int64   `json:"total_requests"`
+	TotalInputTokens  int64   `json:"total_input_tokens"`
+	TotalOutputTokens int64   `json:"total_output_tokens"`
+	TotalCacheTokens  int64   `json:"total_cache_tokens"`
+	TotalTokens       int64   `json:"total_tokens"`
+	TotalCost         float64 `json:"total_cost"`
+	TotalActualCost   float64 `json:"total_actual_cost"`
+	AverageDurationMs float64 `json:"average_duration_ms"`
+}
+
+// BatchUserUsageStats represents usage stats for a single user
+type BatchUserUsageStats struct {
+	UserID          int64   `json:"user_id"`
+	TodayActualCost float64 `json:"today_actual_cost"`
+	TotalActualCost float64 `json:"total_actual_cost"`
+}
+
+// BatchApiKeyUsageStats represents usage stats for a single API key
+type BatchApiKeyUsageStats struct {
+	ApiKeyID        int64   `json:"api_key_id"`
+	TodayActualCost float64 `json:"today_actual_cost"`
+	TotalActualCost float64 `json:"total_actual_cost"`
+}
+
+// AccountUsageHistory represents daily usage history for an account
+type AccountUsageHistory struct {
+	Date       string  `json:"date"`
+	Label      string  `json:"label"`
+	Requests   int64   `json:"requests"`
+	Tokens     int64   `json:"tokens"`
+	Cost       float64 `json:"cost"`
+	ActualCost float64 `json:"actual_cost"`
+}
+
+// AccountUsageSummary represents summary statistics for an account
+type AccountUsageSummary struct {
+	Days              int     `json:"days"`
+	ActualDaysUsed    int     `json:"actual_days_used"`
+	TotalCost         float64 `json:"total_cost"`
+	TotalStandardCost float64 `json:"total_standard_cost"`
+	TotalRequests     int64   `json:"total_requests"`
+	TotalTokens       int64   `json:"total_tokens"`
+	AvgDailyCost      float64 `json:"avg_daily_cost"`
+	AvgDailyRequests  float64 `json:"avg_daily_requests"`
+	AvgDailyTokens    float64 `json:"avg_daily_tokens"`
+	AvgDurationMs     float64 `json:"avg_duration_ms"`
+	Today             *struct {
+		Date     string  `json:"date"`
+		Cost     float64 `json:"cost"`
+		Requests int64   `json:"requests"`
+		Tokens   int64   `json:"tokens"`
+	} `json:"today"`
+	HighestCostDay *struct {
+		Date     string  `json:"date"`
+		Label    string  `json:"label"`
+		Cost     float64 `json:"cost"`
+		Requests int64   `json:"requests"`
+	} `json:"highest_cost_day"`
+	HighestRequestDay *struct {
+		Date     string  `json:"date"`
+		Label    string  `json:"label"`
+		Requests int64   `json:"requests"`
+		Cost     float64 `json:"cost"`
+	} `json:"highest_request_day"`
+}
+
+// AccountUsageStatsResponse represents the full usage statistics response for an account
+type AccountUsageStatsResponse struct {
+	History []AccountUsageHistory `json:"history"`
+	Summary AccountUsageSummary   `json:"summary"`
+	Models  []ModelStat           `json:"models"`
+}

backend/internal/repository/account_repo.go

@@ -2,11 +2,14 @@ package repository
 
 import (
 	"context"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"errors"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 	"time"
 
 	"gorm.io/gorm"
+	"gorm.io/gorm/clause"
 )
 
 type AccountRepository struct {
@@ -39,6 +42,22 @@ func (r *AccountRepository) GetByID(ctx context.Context, id int64) (*model.Accou
 	return &account, nil
 }
 
+func (r *AccountRepository) GetByCRSAccountID(ctx context.Context, crsAccountID string) (*model.Account, error) {
+	if crsAccountID == "" {
+		return nil, nil
+	}
+
+	var account model.Account
+	err := r.db.WithContext(ctx).Where("extra->>'crs_account_id' = ?", crsAccountID).First(&account).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		}
+		return nil, err
+	}
+	return &account, nil
+}
+
 func (r *AccountRepository) Update(ctx context.Context, account *model.Account) error {
 	return r.db.WithContext(ctx).Save(account).Error
 }
@@ -335,3 +354,47 @@ func (r *AccountRepository) UpdateExtra(ctx context.Context, id int64, updates m
 	return r.db.WithContext(ctx).Model(&model.Account{}).Where("id = ?", id).
 		Update("extra", account.Extra).Error
 }
+
+// BulkUpdate updates multiple accounts with the provided fields.
+// It merges credentials/extra JSONB fields instead of overwriting them.
+func (r *AccountRepository) BulkUpdate(ctx context.Context, ids []int64, updates ports.AccountBulkUpdate) (int64, error) {
+	if len(ids) == 0 {
+		return 0, nil
+	}
+
+	updateMap := map[string]any{}
+
+	if updates.Name != nil {
+		updateMap["name"] = *updates.Name
+	}
+	if updates.ProxyID != nil {
+		updateMap["proxy_id"] = updates.ProxyID
+	}
+	if updates.Concurrency != nil {
+		updateMap["concurrency"] = *updates.Concurrency
+	}
+	if updates.Priority != nil {
+		updateMap["priority"] = *updates.Priority
+	}
+	if updates.Status != nil {
+		updateMap["status"] = *updates.Status
+	}
+	if len(updates.Credentials) > 0 {
+		updateMap["credentials"] = gorm.Expr("COALESCE(credentials,'{}') || ?", updates.Credentials)
+	}
+	if len(updates.Extra) > 0 {
+		updateMap["extra"] = gorm.Expr("COALESCE(extra,'{}') || ?", updates.Extra)
+	}
+
+	if len(updateMap) == 0 {
+		return 0, nil
+	}
+
+	result := r.db.WithContext(ctx).
+		Model(&model.Account{}).
+		Where("id IN ?", ids).
+		Clauses(clause.Returning{}).
+		Updates(updateMap)
+
+	return result.RowsAffected, result.Error
+}

backend/internal/repository/api_key_cache.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"time"
 
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/redis/go-redis/v9"
 )

backend/internal/repository/api_key_repo.go

@@ -2,8 +2,8 @@ package repository
 
 import (
 	"context"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 
 	"gorm.io/gorm"
 )

backend/internal/repository/billing_cache.go

@@ -8,7 +8,7 @@ import (
 	"strconv"
 	"time"
 
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/redis/go-redis/v9"
 )

backend/internal/repository/claude_oauth_service.go

@@ -10,8 +10,8 @@ import (
 	"strings"
 	"time"
 
-	"sub2api/internal/pkg/oauth"
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/oauth"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"github.com/imroc/req/v3"
 )

backend/internal/repository/claude_usage_service.go

@@ -9,7 +9,7 @@ import (
 	"net/url"
 	"time"
 
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 )
 
 type claudeUsageService struct{}

backend/internal/repository/concurrency_cache.go

@@ -5,60 +5,95 @@ import (
 	"fmt"
 	"time"
 
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/redis/go-redis/v9"
 )
 
 const (
-	accountConcurrencyKeyPrefix = "concurrency:account:"
-	userConcurrencyKeyPrefix    = "concurrency:user:"
-	waitQueueKeyPrefix          = "concurrency:wait:"
-	concurrencyTTL              = 5 * time.Minute
+	// Key prefixes for independent slot keys
+	// Format: concurrency:account:{accountID}:{requestID}
+	accountSlotKeyPrefix = "concurrency:account:"
+	// Format: concurrency:user:{userID}:{requestID}
+	userSlotKeyPrefix = "concurrency:user:"
+	// Wait queue keeps counter format: concurrency:wait:{userID}
+	waitQueueKeyPrefix = "concurrency:wait:"
+
+	// Slot TTL - each slot expires independently
+	slotTTL = 5 * time.Minute
 )
 
 var (
+	// acquireScript uses SCAN to count existing slots and creates new slot if under limit
+	// KEYS[1] = pattern for SCAN (e.g., "concurrency:account:2:*")
+	// KEYS[2] = full slot key (e.g., "concurrency:account:2:req_xxx")
+	// ARGV[1] = maxConcurrency
+	// ARGV[2] = TTL in seconds
 	acquireScript = redis.NewScript(`
-		local current = redis.call('GET', KEYS[1])
-		if current == false then
-			current = 0
-		else
-			current = tonumber(current)
-		end
-		if current < tonumber(ARGV[1]) then
-			redis.call('INCR', KEYS[1])
-			redis.call('EXPIRE', KEYS[1], ARGV[2])
+		local pattern = KEYS[1]
+		local slotKey = KEYS[2]
+		local maxConcurrency = tonumber(ARGV[1])
+		local ttl = tonumber(ARGV[2])
+
+		-- Count existing slots using SCAN
+		local cursor = "0"
+		local count = 0
+		repeat
+			local result = redis.call('SCAN', cursor, 'MATCH', pattern, 'COUNT', 100)
+			cursor = result[1]
+			count = count + #result[2]
+		until cursor == "0"
+
+		-- Check if we can acquire a slot
+		if count < maxConcurrency then
+			redis.call('SET', slotKey, '1', 'EX', ttl)
 			return 1
 		end
+
 		return 0
 	`)
 
-	releaseScript = redis.NewScript(`
-		local current = redis.call('GET', KEYS[1])
-		if current ~= false and tonumber(current) > 0 then
-			redis.call('DECR', KEYS[1])
-		end
-		return 1
+	// getCountScript counts slots using SCAN
+	// KEYS[1] = pattern for SCAN
+	getCountScript = redis.NewScript(`
+		local pattern = KEYS[1]
+		local cursor = "0"
+		local count = 0
+		repeat
+			local result = redis.call('SCAN', cursor, 'MATCH', pattern, 'COUNT', 100)
+			cursor = result[1]
+			count = count + #result[2]
+		until cursor == "0"
+		return count
 	`)
 
+	// incrementWaitScript - only sets TTL on first creation to avoid refreshing
+	// KEYS[1] = wait queue key
+	// ARGV[1] = maxWait
+	// ARGV[2] = TTL in seconds
 	incrementWaitScript = redis.NewScript(`
-		local waitKey = KEYS[1]
-		local maxWait = tonumber(ARGV[1])
-		local ttl = tonumber(ARGV[2])
-		local current = redis.call('GET', waitKey)
+		local current = redis.call('GET', KEYS[1])
 		if current == false then
 			current = 0
 		else
 			current = tonumber(current)
 		end
-		if current >= maxWait then
+
+		if current >= tonumber(ARGV[1]) then
 			return 0
 		end
-		redis.call('INCR', waitKey)
-		redis.call('EXPIRE', waitKey, ttl)
+
+		local newVal = redis.call('INCR', KEYS[1])
+
+		-- Only set TTL on first creation to avoid refreshing zombie data
+		if newVal == 1 then
+			redis.call('EXPIRE', KEYS[1], ARGV[2])
+		end
+
 		return 1
 	`)
 
+	// decrementWaitScript - same as before
 	decrementWaitScript = redis.NewScript(`
 		local current = redis.call('GET', KEYS[1])
 		if current ~= false and tonumber(current) > 0 then
@@ -76,49 +111,86 @@ func NewConcurrencyCache(rdb *redis.Client) ports.ConcurrencyCache {
 	return &concurrencyCache{rdb: rdb}
 }
 
-func (c *concurrencyCache) AcquireAccountSlot(ctx context.Context, accountID int64, maxConcurrency int) (bool, error) {
-	key := fmt.Sprintf("%s%d", accountConcurrencyKeyPrefix, accountID)
-	result, err := acquireScript.Run(ctx, c.rdb, []string{key}, maxConcurrency, int(concurrencyTTL.Seconds())).Int()
+// Helper functions for key generation
+func accountSlotKey(accountID int64, requestID string) string {
+	return fmt.Sprintf("%s%d:%s", accountSlotKeyPrefix, accountID, requestID)
+}
+
+func accountSlotPattern(accountID int64) string {
+	return fmt.Sprintf("%s%d:*", accountSlotKeyPrefix, accountID)
+}
+
+func userSlotKey(userID int64, requestID string) string {
+	return fmt.Sprintf("%s%d:%s", userSlotKeyPrefix, userID, requestID)
+}
+
+func userSlotPattern(userID int64) string {
+	return fmt.Sprintf("%s%d:*", userSlotKeyPrefix, userID)
+}
+
+func waitQueueKey(userID int64) string {
+	return fmt.Sprintf("%s%d", waitQueueKeyPrefix, userID)
+}
+
+// Account slot operations
+
+func (c *concurrencyCache) AcquireAccountSlot(ctx context.Context, accountID int64, maxConcurrency int, requestID string) (bool, error) {
+	pattern := accountSlotPattern(accountID)
+	slotKey := accountSlotKey(accountID, requestID)
+
+	result, err := acquireScript.Run(ctx, c.rdb, []string{pattern, slotKey}, maxConcurrency, int(slotTTL.Seconds())).Int()
 	if err != nil {
 		return false, err
 	}
 	return result == 1, nil
 }
 
-func (c *concurrencyCache) ReleaseAccountSlot(ctx context.Context, accountID int64) error {
-	key := fmt.Sprintf("%s%d", accountConcurrencyKeyPrefix, accountID)
-	_, err := releaseScript.Run(ctx, c.rdb, []string{key}).Result()
-	return err
+func (c *concurrencyCache) ReleaseAccountSlot(ctx context.Context, accountID int64, requestID string) error {
+	slotKey := accountSlotKey(accountID, requestID)
+	return c.rdb.Del(ctx, slotKey).Err()
 }
 
 func (c *concurrencyCache) GetAccountConcurrency(ctx context.Context, accountID int64) (int, error) {
-	key := fmt.Sprintf("%s%d", accountConcurrencyKeyPrefix, accountID)
-	return c.rdb.Get(ctx, key).Int()
+	pattern := accountSlotPattern(accountID)
+	result, err := getCountScript.Run(ctx, c.rdb, []string{pattern}).Int()
+	if err != nil {
+		return 0, err
+	}
+	return result, nil
 }
 
-func (c *concurrencyCache) AcquireUserSlot(ctx context.Context, userID int64, maxConcurrency int) (bool, error) {
-	key := fmt.Sprintf("%s%d", userConcurrencyKeyPrefix, userID)
-	result, err := acquireScript.Run(ctx, c.rdb, []string{key}, maxConcurrency, int(concurrencyTTL.Seconds())).Int()
+// User slot operations
+
+func (c *concurrencyCache) AcquireUserSlot(ctx context.Context, userID int64, maxConcurrency int, requestID string) (bool, error) {
+	pattern := userSlotPattern(userID)
+	slotKey := userSlotKey(userID, requestID)
+
+	result, err := acquireScript.Run(ctx, c.rdb, []string{pattern, slotKey}, maxConcurrency, int(slotTTL.Seconds())).Int()
 	if err != nil {
 		return false, err
 	}
 	return result == 1, nil
 }
 
-func (c *concurrencyCache) ReleaseUserSlot(ctx context.Context, userID int64) error {
-	key := fmt.Sprintf("%s%d", userConcurrencyKeyPrefix, userID)
-	_, err := releaseScript.Run(ctx, c.rdb, []string{key}).Result()
-	return err
+func (c *concurrencyCache) ReleaseUserSlot(ctx context.Context, userID int64, requestID string) error {
+	slotKey := userSlotKey(userID, requestID)
+	return c.rdb.Del(ctx, slotKey).Err()
 }
 
 func (c *concurrencyCache) GetUserConcurrency(ctx context.Context, userID int64) (int, error) {
-	key := fmt.Sprintf("%s%d", userConcurrencyKeyPrefix, userID)
-	return c.rdb.Get(ctx, key).Int()
+	pattern := userSlotPattern(userID)
+	result, err := getCountScript.Run(ctx, c.rdb, []string{pattern}).Int()
+	if err != nil {
+		return 0, err
+	}
+	return result, nil
 }
 
+// Wait queue operations
+
 func (c *concurrencyCache) IncrementWaitCount(ctx context.Context, userID int64, maxWait int) (bool, error) {
-	key := fmt.Sprintf("%s%d", waitQueueKeyPrefix, userID)
-	result, err := incrementWaitScript.Run(ctx, c.rdb, []string{key}, maxWait, int(concurrencyTTL.Seconds())).Int()
+	key := waitQueueKey(userID)
+	result, err := incrementWaitScript.Run(ctx, c.rdb, []string{key}, maxWait, int(slotTTL.Seconds())).Int()
 	if err != nil {
 		return false, err
 	}
@@ -126,7 +198,7 @@ func (c *concurrencyCache) IncrementWaitCount(ctx context.Context, userID int64,
 }
 
 func (c *concurrencyCache) DecrementWaitCount(ctx context.Context, userID int64) error {
-	key := fmt.Sprintf("%s%d", waitQueueKeyPrefix, userID)
+	key := waitQueueKey(userID)
 	_, err := decrementWaitScript.Run(ctx, c.rdb, []string{key}).Result()
 	return err
 }

backend/internal/repository/email_cache.go

@@ -5,7 +5,7 @@ import (
 	"encoding/json"
 	"time"
 
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/redis/go-redis/v9"
 )

backend/internal/repository/gateway_cache.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"time"
 
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/redis/go-redis/v9"
 )

backend/internal/repository/github_release_service.go

@@ -9,7 +9,7 @@ import (
 	"os"
 	"time"
 
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 )
 
 type githubReleaseClient struct {

backend/internal/repository/group_repo.go

@@ -2,8 +2,8 @@ package repository
 
 import (
 	"context"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 
 	"gorm.io/gorm"
 )

backend/internal/repository/http_upstream.go

@@ -5,8 +5,8 @@ import (
 	"net/url"
 	"time"
 
-	"sub2api/internal/config"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 )
 
 // httpUpstreamService is a generic HTTP upstream service that can be used for

backend/internal/repository/identity_cache.go

@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"time"
 
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/redis/go-redis/v9"
 )

backend/internal/repository/openai_oauth_service.go

@@ -6,8 +6,8 @@ import (
 	"net/url"
 	"time"
 
-	"sub2api/internal/pkg/openai"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/imroc/req/v3"
 )

backend/internal/repository/pricing_service.go

@@ -8,7 +8,7 @@ import (
 	"strings"
 	"time"
 
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 )
 
 type pricingRemoteClient struct {

backend/internal/repository/proxy_probe_service.go

@@ -11,7 +11,7 @@ import (
 	"net/url"
 	"time"
 
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 
 	"golang.org/x/net/proxy"
 )

backend/internal/repository/proxy_repo.go

@@ -2,8 +2,8 @@ package repository
 
 import (
 	"context"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 
 	"gorm.io/gorm"
 )

backend/internal/repository/redeem_cache.go

@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"time"
 
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/redis/go-redis/v9"
 )

backend/internal/repository/redeem_code_repo.go

@@ -2,8 +2,8 @@ package repository
 
 import (
 	"context"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 	"time"
 
 	"gorm.io/gorm"

backend/internal/repository/setting_repo.go

@@ -2,7 +2,7 @@ package repository
 
 import (
 	"context"
-	"sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/model"
 	"time"
 
 	"gorm.io/gorm"

backend/internal/repository/turnstile_service.go

@@ -9,7 +9,7 @@ import (
 	"strings"
 	"time"
 
-	"sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 )
 
 const turnstileVerifyURL = "https://challenges.cloudflare.com/turnstile/v0/siteverify"

backend/internal/repository/update_cache.go

@@ -4,7 +4,7 @@ import (
 	"context"
 	"time"
 
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/redis/go-redis/v9"
 )

backend/internal/repository/usage_log_repo.go

@@ -2,10 +2,10 @@ package repository
 
 import (
 	"context"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
-	"sub2api/internal/pkg/timezone"
-	"sub2api/internal/pkg/usagestats"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/timezone"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/usagestats"
 	"time"
 
 	"gorm.io/gorm"
@@ -19,6 +19,30 @@ func NewUsageLogRepository(db *gorm.DB) *UsageLogRepository {
 	return &UsageLogRepository{db: db}
 }
 
+// getPerformanceStats 获取 RPM 和 TPM（近5分钟平均值，可选按用户过滤）
+func (r *UsageLogRepository) getPerformanceStats(ctx context.Context, userID int64) (rpm, tpm int64) {
+	fiveMinutesAgo := time.Now().Add(-5 * time.Minute)
+	var perfStats struct {
+		RequestCount int64 `gorm:"column:request_count"`
+		TokenCount   int64 `gorm:"column:token_count"`
+	}
+
+	db := r.db.WithContext(ctx).Model(&model.UsageLog{}).
+		Select(`
+			COUNT(*) as request_count,
+			COALESCE(SUM(input_tokens + output_tokens), 0) as token_count
+		`).
+		Where("created_at >= ?", fiveMinutesAgo)
+
+	if userID > 0 {
+		db = db.Where("user_id = ?", userID)
+	}
+
+	db.Scan(&perfStats)
+	// 返回5分钟平均值
+	return perfStats.RequestCount / 5, perfStats.TokenCount / 5
+}
+
 func (r *UsageLogRepository) Create(ctx context.Context, log *model.UsageLog) error {
 	return r.db.WithContext(ctx).Create(log).Error
 }
@@ -113,46 +137,7 @@ func (r *UsageLogRepository) GetUserStats(ctx context.Context, userID int64, sta
 }
 
 // DashboardStats 仪表盘统计
-type DashboardStats struct {
-	// 用户统计
-	TotalUsers    int64 `json:"total_users"`
-	TodayNewUsers int64 `json:"today_new_users"` // 今日新增用户数
-	ActiveUsers   int64 `json:"active_users"`    // 今日有请求的用户数
-
-	// API Key 统计
-	TotalApiKeys  int64 `json:"total_api_keys"`
-	ActiveApiKeys int64 `json:"active_api_keys"` // 状态为 active 的 API Key 数
-
-	// 账户统计
-	TotalAccounts     int64 `json:"total_accounts"`
-	NormalAccounts    int64 `json:"normal_accounts"`    // 正常账户数 (schedulable=true, status=active)
-	ErrorAccounts     int64 `json:"error_accounts"`     // 异常账户数 (status=error)
-	RateLimitAccounts int64 `json:"ratelimit_accounts"` // 限流账户数
-	OverloadAccounts  int64 `json:"overload_accounts"`  // 过载账户数
-
-	// 累计 Token 使用统计
-	TotalRequests            int64   `json:"total_requests"`
-	TotalInputTokens         int64   `json:"total_input_tokens"`
-	TotalOutputTokens        int64   `json:"total_output_tokens"`
-	TotalCacheCreationTokens int64   `json:"total_cache_creation_tokens"`
-	TotalCacheReadTokens     int64   `json:"total_cache_read_tokens"`
-	TotalTokens              int64   `json:"total_tokens"`
-	TotalCost                float64 `json:"total_cost"`        // 累计标准计费
-	TotalActualCost          float64 `json:"total_actual_cost"` // 累计实际扣除
-
-	// 今日 Token 使用统计
-	TodayRequests            int64   `json:"today_requests"`
-	TodayInputTokens         int64   `json:"today_input_tokens"`
-	TodayOutputTokens        int64   `json:"today_output_tokens"`
-	TodayCacheCreationTokens int64   `json:"today_cache_creation_tokens"`
-	TodayCacheReadTokens     int64   `json:"today_cache_read_tokens"`
-	TodayTokens              int64   `json:"today_tokens"`
-	TodayCost                float64 `json:"today_cost"`        // 今日标准计费
-	TodayActualCost          float64 `json:"today_actual_cost"` // 今日实际扣除
-
-	// 系统运行统计
-	AverageDurationMs float64 `json:"average_duration_ms"` // 平均响应时间
-}
+type DashboardStats = usagestats.DashboardStats
 
 func (r *UsageLogRepository) GetDashboardStats(ctx context.Context) (*DashboardStats, error) {
 	var stats DashboardStats
@@ -269,6 +254,9 @@ func (r *UsageLogRepository) GetDashboardStats(ctx context.Context) (*DashboardS
 	stats.TodayCost = todayStats.TodayCost
 	stats.TodayActualCost = todayStats.TodayActualCost
 
+	// 性能指标：RPM 和 TPM（最近1分钟，全局）
+	stats.Rpm, stats.Tpm = r.getPerformanceStats(ctx, 0)
+
 	return &stats, nil
 }
 
@@ -398,47 +386,16 @@ func (r *UsageLogRepository) GetAccountWindowStats(ctx context.Context, accountI
 }
 
 // TrendDataPoint represents a single point in trend data
-type TrendDataPoint struct {
-	Date         string  `json:"date"`
-	Requests     int64   `json:"requests"`
-	InputTokens  int64   `json:"input_tokens"`
-	OutputTokens int64   `json:"output_tokens"`
-	CacheTokens  int64   `json:"cache_tokens"`
-	TotalTokens  int64   `json:"total_tokens"`
-	Cost         float64 `json:"cost"`        // 标准计费
-	ActualCost   float64 `json:"actual_cost"` // 实际扣除
-}
+type TrendDataPoint = usagestats.TrendDataPoint
 
 // ModelStat represents usage statistics for a single model
-type ModelStat struct {
-	Model        string  `json:"model"`
-	Requests     int64   `json:"requests"`
-	InputTokens  int64   `json:"input_tokens"`
-	OutputTokens int64   `json:"output_tokens"`
-	TotalTokens  int64   `json:"total_tokens"`
-	Cost         float64 `json:"cost"`        // 标准计费
-	ActualCost   float64 `json:"actual_cost"` // 实际扣除
-}
+type ModelStat = usagestats.ModelStat
 
 // UserUsageTrendPoint represents user usage trend data point
-type UserUsageTrendPoint struct {
-	Date       string  `json:"date"`
-	UserID     int64   `json:"user_id"`
-	Email      string  `json:"email"`
-	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
-}
+type UserUsageTrendPoint = usagestats.UserUsageTrendPoint
 
 // ApiKeyUsageTrendPoint represents API key usage trend data point
-type ApiKeyUsageTrendPoint struct {
-	Date     string `json:"date"`
-	ApiKeyID int64  `json:"api_key_id"`
-	KeyName  string `json:"key_name"`
-	Requests int64  `json:"requests"`
-	Tokens   int64  `json:"tokens"`
-}
+type ApiKeyUsageTrendPoint = usagestats.ApiKeyUsageTrendPoint
 
 // GetApiKeyUsageTrend returns usage trend data grouped by API key and date
 func (r *UsageLogRepository) GetApiKeyUsageTrend(ctx context.Context, startTime, endTime time.Time, granularity string, limit int) ([]ApiKeyUsageTrendPoint, error) {
@@ -531,34 +488,7 @@ func (r *UsageLogRepository) GetUserUsageTrend(ctx context.Context, startTime, e
 }
 
 // UserDashboardStats 用户仪表盘统计
-type UserDashboardStats struct {
-	// API Key 统计
-	TotalApiKeys  int64 `json:"total_api_keys"`
-	ActiveApiKeys int64 `json:"active_api_keys"`
-
-	// 累计 Token 使用统计
-	TotalRequests            int64   `json:"total_requests"`
-	TotalInputTokens         int64   `json:"total_input_tokens"`
-	TotalOutputTokens        int64   `json:"total_output_tokens"`
-	TotalCacheCreationTokens int64   `json:"total_cache_creation_tokens"`
-	TotalCacheReadTokens     int64   `json:"total_cache_read_tokens"`
-	TotalTokens              int64   `json:"total_tokens"`
-	TotalCost                float64 `json:"total_cost"`        // 累计标准计费
-	TotalActualCost          float64 `json:"total_actual_cost"` // 累计实际扣除
-
-	// 今日 Token 使用统计
-	TodayRequests            int64   `json:"today_requests"`
-	TodayInputTokens         int64   `json:"today_input_tokens"`
-	TodayOutputTokens        int64   `json:"today_output_tokens"`
-	TodayCacheCreationTokens int64   `json:"today_cache_creation_tokens"`
-	TodayCacheReadTokens     int64   `json:"today_cache_read_tokens"`
-	TodayTokens              int64   `json:"today_tokens"`
-	TodayCost                float64 `json:"today_cost"`        // 今日标准计费
-	TodayActualCost          float64 `json:"today_actual_cost"` // 今日实际扣除
-
-	// 性能统计
-	AverageDurationMs float64 `json:"average_duration_ms"`
-}
+type UserDashboardStats = usagestats.UserDashboardStats
 
 // GetUserDashboardStats 获取用户专属的仪表盘统计
 func (r *UsageLogRepository) GetUserDashboardStats(ctx context.Context, userID int64) (*UserDashboardStats, error) {
@@ -641,6 +571,9 @@ func (r *UsageLogRepository) GetUserDashboardStats(ctx context.Context, userID i
 	stats.TodayCost = todayStats.TodayCost
 	stats.TodayActualCost = todayStats.TodayActualCost
 
+	// 性能指标：RPM 和 TPM（最近1分钟，仅统计该用户的请求）
+	stats.Rpm, stats.Tpm = r.getPerformanceStats(ctx, userID)
+
 	return &stats, nil
 }
 
@@ -705,12 +638,7 @@ func (r *UsageLogRepository) GetUserModelStats(ctx context.Context, userID int64
 }
 
 // UsageLogFilters represents filters for usage log queries
-type UsageLogFilters struct {
-	UserID    int64
-	ApiKeyID  int64
-	StartTime *time.Time
-	EndTime   *time.Time
-}
+type UsageLogFilters = usagestats.UsageLogFilters
 
 // ListWithFilters lists usage logs with optional filters (for admin)
 func (r *UsageLogRepository) ListWithFilters(ctx context.Context, params pagination.PaginationParams, filters UsageLogFilters) ([]model.UsageLog, *pagination.PaginationResult, error) {
@@ -758,23 +686,10 @@ func (r *UsageLogRepository) ListWithFilters(ctx context.Context, params paginat
 }
 
 // UsageStats represents usage statistics
-type UsageStats struct {
-	TotalRequests     int64   `json:"total_requests"`
-	TotalInputTokens  int64   `json:"total_input_tokens"`
-	TotalOutputTokens int64   `json:"total_output_tokens"`
-	TotalCacheTokens  int64   `json:"total_cache_tokens"`
-	TotalTokens       int64   `json:"total_tokens"`
-	TotalCost         float64 `json:"total_cost"`
-	TotalActualCost   float64 `json:"total_actual_cost"`
-	AverageDurationMs float64 `json:"average_duration_ms"`
-}
+type UsageStats = usagestats.UsageStats
 
 // BatchUserUsageStats represents usage stats for a single user
-type BatchUserUsageStats struct {
-	UserID          int64   `json:"user_id"`
-	TodayActualCost float64 `json:"today_actual_cost"`
-	TotalActualCost float64 `json:"total_actual_cost"`
-}
+type BatchUserUsageStats = usagestats.BatchUserUsageStats
 
 // GetBatchUserUsageStats gets today and total actual_cost for multiple users
 func (r *UsageLogRepository) GetBatchUserUsageStats(ctx context.Context, userIDs []int64) (map[int64]*BatchUserUsageStats, error) {
@@ -834,11 +749,7 @@ func (r *UsageLogRepository) GetBatchUserUsageStats(ctx context.Context, userIDs
 }
 
 // BatchApiKeyUsageStats represents usage stats for a single API key
-type BatchApiKeyUsageStats struct {
-	ApiKeyID        int64   `json:"api_key_id"`
-	TodayActualCost float64 `json:"today_actual_cost"`
-	TotalActualCost float64 `json:"total_actual_cost"`
-}
+type BatchApiKeyUsageStats = usagestats.BatchApiKeyUsageStats
 
 // GetBatchApiKeyUsageStats gets today and total actual_cost for multiple API keys
 func (r *UsageLogRepository) GetBatchApiKeyUsageStats(ctx context.Context, apiKeyIDs []int64) (map[int64]*BatchApiKeyUsageStats, error) {
@@ -1012,53 +923,13 @@ func (r *UsageLogRepository) GetGlobalStats(ctx context.Context, startTime, endT
 }
 
 // AccountUsageHistory represents daily usage history for an account
-type AccountUsageHistory struct {
-	Date       string  `json:"date"`
-	Label      string  `json:"label"`
-	Requests   int64   `json:"requests"`
-	Tokens     int64   `json:"tokens"`
-	Cost       float64 `json:"cost"`
-	ActualCost float64 `json:"actual_cost"`
-}
+type AccountUsageHistory = usagestats.AccountUsageHistory
 
 // AccountUsageSummary represents summary statistics for an account
-type AccountUsageSummary struct {
-	Days              int     `json:"days"`
-	ActualDaysUsed    int     `json:"actual_days_used"`
-	TotalCost         float64 `json:"total_cost"`
-	TotalStandardCost float64 `json:"total_standard_cost"`
-	TotalRequests     int64   `json:"total_requests"`
-	TotalTokens       int64   `json:"total_tokens"`
-	AvgDailyCost      float64 `json:"avg_daily_cost"`
-	AvgDailyRequests  float64 `json:"avg_daily_requests"`
-	AvgDailyTokens    float64 `json:"avg_daily_tokens"`
-	AvgDurationMs     float64 `json:"avg_duration_ms"`
-	Today             *struct {
-		Date     string  `json:"date"`
-		Cost     float64 `json:"cost"`
-		Requests int64   `json:"requests"`
-		Tokens   int64   `json:"tokens"`
-	} `json:"today"`
-	HighestCostDay *struct {
-		Date     string  `json:"date"`
-		Label    string  `json:"label"`
-		Cost     float64 `json:"cost"`
-		Requests int64   `json:"requests"`
-	} `json:"highest_cost_day"`
-	HighestRequestDay *struct {
-		Date     string  `json:"date"`
-		Label    string  `json:"label"`
-		Requests int64   `json:"requests"`
-		Cost     float64 `json:"cost"`
-	} `json:"highest_request_day"`
-}
+type AccountUsageSummary = usagestats.AccountUsageSummary
 
 // AccountUsageStatsResponse represents the full usage statistics response for an account
-type AccountUsageStatsResponse struct {
-	History []AccountUsageHistory `json:"history"`
-	Summary AccountUsageSummary   `json:"summary"`
-	Models  []ModelStat           `json:"models"`
-}
+type AccountUsageStatsResponse = usagestats.AccountUsageStatsResponse
 
 // GetAccountUsageStats returns comprehensive usage statistics for an account over a time range
 func (r *UsageLogRepository) GetAccountUsageStats(ctx context.Context, accountID int64, startTime, endTime time.Time) (*AccountUsageStatsResponse, error) {

backend/internal/repository/user_repo.go

@@ -2,8 +2,8 @@ package repository
 
 import (
 	"context"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 
 	"gorm.io/gorm"
 )

backend/internal/repository/user_subscription_repo.go

@@ -4,8 +4,8 @@ import (
 	"context"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 
 	"gorm.io/gorm"
 )

backend/internal/repository/wire.go

@@ -1,7 +1,7 @@
 package repository
 
 import (
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/google/wire"
 )

backend/internal/server/http.go

@@ -1,11 +1,11 @@
 package server
 
 import (
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/handler"
+	"github.com/Wei-Shaw/sub2api/internal/repository"
+	"github.com/Wei-Shaw/sub2api/internal/service"
 	"net/http"
-	"sub2api/internal/config"
-	"sub2api/internal/handler"
-	"sub2api/internal/repository"
-	"sub2api/internal/service"
 	"time"
 
 	"github.com/gin-gonic/gin"

backend/internal/server/router.go

@@ -1,13 +1,13 @@
 package server
 
 import (
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/handler"
+	"github.com/Wei-Shaw/sub2api/internal/middleware"
+	"github.com/Wei-Shaw/sub2api/internal/repository"
+	"github.com/Wei-Shaw/sub2api/internal/service"
+	"github.com/Wei-Shaw/sub2api/internal/web"
 	"net/http"
-	"sub2api/internal/config"
-	"sub2api/internal/handler"
-	"sub2api/internal/middleware"
-	"sub2api/internal/repository"
-	"sub2api/internal/service"
-	"sub2api/internal/web"
 
 	"github.com/gin-gonic/gin"
 )
@@ -180,6 +180,7 @@ func registerRoutes(r *gin.Engine, h *handler.Handlers, s *service.Services, rep
 				accounts.GET("", h.Admin.Account.List)
 				accounts.GET("/:id", h.Admin.Account.GetByID)
 				accounts.POST("", h.Admin.Account.Create)
+				accounts.POST("/sync/crs", h.Admin.Account.SyncFromCRS)
 				accounts.PUT("/:id", h.Admin.Account.Update)
 				accounts.DELETE("/:id", h.Admin.Account.Delete)
 				accounts.POST("/:id/test", h.Admin.Account.Test)
@@ -192,6 +193,8 @@ func registerRoutes(r *gin.Engine, h *handler.Handlers, s *service.Services, rep
 				accounts.POST("/:id/schedulable", h.Admin.Account.SetSchedulable)
 				accounts.GET("/:id/models", h.Admin.Account.GetAvailableModels)
 				accounts.POST("/batch", h.Admin.Account.BatchCreate)
+				accounts.POST("/batch-update-credentials", h.Admin.Account.BatchUpdateCredentials)
+				accounts.POST("/bulk-update", h.Admin.Account.BulkUpdate)
 
 				// Claude OAuth routes
 				accounts.POST("/generate-auth-url", h.Admin.OAuth.GenerateAuthURL)

backend/internal/service/account_service.go

@@ -4,9 +4,9 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"gorm.io/gorm"
 )

backend/internal/service/account_test_service.go

@@ -14,10 +14,10 @@ import (
 	"strings"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/claude"
-	"sub2api/internal/pkg/openai"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/claude"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/gin-gonic/gin"
 	"github.com/google/uuid"
@@ -388,12 +388,14 @@ func createOpenAITestPayload(modelID string, isOAuth bool) map[string]any {
 		"stream": true,
 	}
 
-	// OAuth accounts using ChatGPT internal API require store: false and instructions
+	// OAuth accounts using ChatGPT internal API require store: false
 	if isOAuth {
 		payload["store"] = false
-		payload["instructions"] = openai.DefaultInstructions
 	}
 
+	// All accounts require instructions for Responses API
+	payload["instructions"] = openai.DefaultInstructions
+
 	return payload
 }
 

backend/internal/service/account_usage_service.go

@@ -7,8 +7,9 @@ import (
 	"sync"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/usagestats"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 )
 
 // usageCache 用于缓存usage数据
@@ -176,6 +177,14 @@ func (s *AccountUsageService) GetTodayStats(ctx context.Context, accountID int64
 	}, nil
 }
 
+func (s *AccountUsageService) GetAccountUsageStats(ctx context.Context, accountID int64, startTime, endTime time.Time) (*usagestats.AccountUsageStatsResponse, error) {
+	stats, err := s.usageLogRepo.GetAccountUsageStats(ctx, accountID, startTime, endTime)
+	if err != nil {
+		return nil, fmt.Errorf("get account usage stats failed: %w", err)
+	}
+	return stats, nil
+}
+
 // fetchOAuthUsage 从Anthropic API获取OAuth账号的使用量
 func (s *AccountUsageService) fetchOAuthUsage(ctx context.Context, account *model.Account) (*UsageInfo, error) {
 	accessToken := account.GetCredential("access_token")

backend/internal/service/admin_service.go

@@ -7,9 +7,9 @@ import (
 	"log"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"gorm.io/gorm"
 )
@@ -45,6 +45,7 @@ type AdminService interface {
 	RefreshAccountCredentials(ctx context.Context, id int64) (*model.Account, error)
 	ClearAccountError(ctx context.Context, id int64) (*model.Account, error)
 	SetAccountSchedulable(ctx context.Context, id int64, schedulable bool) (*model.Account, error)
+	BulkUpdateAccounts(ctx context.Context, input *BulkUpdateAccountsInput) (*BulkUpdateAccountsResult, error)
 
 	// Proxy management
 	ListProxies(ctx context.Context, page, pageSize int, protocol, status, search string) ([]model.Proxy, int64, error)
@@ -140,6 +141,33 @@ type UpdateAccountInput struct {
 	GroupIDs    *[]int64
 }
 
+// BulkUpdateAccountsInput describes the payload for bulk updating accounts.
+type BulkUpdateAccountsInput struct {
+	AccountIDs  []int64
+	Name        string
+	ProxyID     *int64
+	Concurrency *int
+	Priority    *int
+	Status      string
+	GroupIDs    *[]int64
+	Credentials map[string]any
+	Extra       map[string]any
+}
+
+// BulkUpdateAccountResult captures the result for a single account update.
+type BulkUpdateAccountResult struct {
+	AccountID int64  `json:"account_id"`
+	Success   bool   `json:"success"`
+	Error     string `json:"error,omitempty"`
+}
+
+// BulkUpdateAccountsResult is the aggregated response for bulk updates.
+type BulkUpdateAccountsResult struct {
+	Success int                       `json:"success"`
+	Failed  int                       `json:"failed"`
+	Results []BulkUpdateAccountResult `json:"results"`
+}
+
 type CreateProxyInput struct {
 	Name     string
 	Protocol string
@@ -694,6 +722,65 @@ func (s *adminServiceImpl) UpdateAccount(ctx context.Context, id int64, input *U
 	return account, nil
 }
 
+// BulkUpdateAccounts updates multiple accounts in one request.
+// It merges credentials/extra keys instead of overwriting the whole object.
+func (s *adminServiceImpl) BulkUpdateAccounts(ctx context.Context, input *BulkUpdateAccountsInput) (*BulkUpdateAccountsResult, error) {
+	result := &BulkUpdateAccountsResult{
+		Results: make([]BulkUpdateAccountResult, 0, len(input.AccountIDs)),
+	}
+
+	if len(input.AccountIDs) == 0 {
+		return result, nil
+	}
+
+	// Prepare bulk updates for columns and JSONB fields.
+	repoUpdates := ports.AccountBulkUpdate{
+		Credentials: input.Credentials,
+		Extra:       input.Extra,
+	}
+	if input.Name != "" {
+		repoUpdates.Name = &input.Name
+	}
+	if input.ProxyID != nil {
+		repoUpdates.ProxyID = input.ProxyID
+	}
+	if input.Concurrency != nil {
+		repoUpdates.Concurrency = input.Concurrency
+	}
+	if input.Priority != nil {
+		repoUpdates.Priority = input.Priority
+	}
+	if input.Status != "" {
+		repoUpdates.Status = &input.Status
+	}
+
+	// Run bulk update for column/jsonb fields first.
+	if _, err := s.accountRepo.BulkUpdate(ctx, input.AccountIDs, repoUpdates); err != nil {
+		return nil, err
+	}
+
+	// Handle group bindings per account (requires individual operations).
+	for _, accountID := range input.AccountIDs {
+		entry := BulkUpdateAccountResult{AccountID: accountID}
+
+		if input.GroupIDs != nil {
+			if err := s.accountRepo.BindGroups(ctx, accountID, *input.GroupIDs); err != nil {
+				entry.Success = false
+				entry.Error = err.Error()
+				result.Failed++
+				result.Results = append(result.Results, entry)
+				continue
+			}
+		}
+
+		entry.Success = true
+		result.Success++
+		result.Results = append(result.Results, entry)
+	}
+
+	return result, nil
+}
+
 func (s *adminServiceImpl) DeleteAccount(ctx context.Context, id int64) error {
 	return s.accountRepo.Delete(ctx, id)
 }

backend/internal/service/api_key_service.go

@@ -6,11 +6,11 @@ import (
 	"encoding/hex"
 	"errors"
 	"fmt"
-	"sub2api/internal/config"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
-	"sub2api/internal/pkg/timezone"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/timezone"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 	"time"
 
 	"github.com/redis/go-redis/v9"
@@ -455,3 +455,11 @@ func (s *ApiKeyService) canUserBindGroupInternal(user *model.User, group *model.
 	// 标准类型分组：使用原有逻辑
 	return user.CanBindGroup(group.ID, group.IsExclusive)
 }
+
+func (s *ApiKeyService) SearchApiKeys(ctx context.Context, userID int64, keyword string, limit int) ([]model.ApiKey, error) {
+	keys, err := s.apiKeyRepo.SearchApiKeys(ctx, userID, keyword, limit)
+	if err != nil {
+		return nil, fmt.Errorf("search api keys: %w", err)
+	}
+	return keys, nil
+}

backend/internal/service/auth_service.go

@@ -4,10 +4,10 @@ import (
 	"context"
 	"errors"
 	"fmt"
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 	"log"
-	"sub2api/internal/config"
-	"sub2api/internal/model"
-	"sub2api/internal/service/ports"
 	"time"
 
 	"github.com/golang-jwt/jwt/v5"

backend/internal/service/billing_cache_service.go

@@ -7,8 +7,8 @@ import (
 	"log"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 )
 
 // 错误定义

backend/internal/service/billing_service.go

@@ -2,9 +2,9 @@ package service
 
 import (
 	"fmt"
+	"github.com/Wei-Shaw/sub2api/internal/config"
 	"log"
 	"strings"
-	"sub2api/internal/config"
 )
 
 // ModelPricing 模型价格配置（per-token价格，与LiteLLM格式一致）

backend/internal/service/concurrency_service.go

@@ -2,12 +2,26 @@ package service
 
 import (
 	"context"
+	"crypto/rand"
+	"encoding/hex"
+	"fmt"
 	"log"
 	"time"
 
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 )
 
+// generateRequestID generates a unique request ID for concurrency slot tracking
+// Uses 8 random bytes (16 hex chars) for uniqueness
+func generateRequestID() string {
+	b := make([]byte, 8)
+	if _, err := rand.Read(b); err != nil {
+		// Fallback to nanosecond timestamp (extremely rare case)
+		return fmt.Sprintf("%x", time.Now().UnixNano())
+	}
+	return hex.EncodeToString(b)
+}
+
 const (
 	// Default extra wait slots beyond concurrency limit
 	defaultExtraWaitSlots = 20
@@ -41,7 +55,10 @@ func (s *ConcurrencyService) AcquireAccountSlot(ctx context.Context, accountID i
 		}, nil
 	}
 
-	acquired, err := s.cache.AcquireAccountSlot(ctx, accountID, maxConcurrency)
+	// Generate unique request ID for this slot
+	requestID := generateRequestID()
+
+	acquired, err := s.cache.AcquireAccountSlot(ctx, accountID, maxConcurrency, requestID)
 	if err != nil {
 		return nil, err
 	}
@@ -52,8 +69,8 @@ func (s *ConcurrencyService) AcquireAccountSlot(ctx context.Context, accountID i
 			ReleaseFunc: func() {
 				bgCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 				defer cancel()
-				if err := s.cache.ReleaseAccountSlot(bgCtx, accountID); err != nil {
-					log.Printf("Warning: failed to release account slot for %d: %v", accountID, err)
+				if err := s.cache.ReleaseAccountSlot(bgCtx, accountID, requestID); err != nil {
+					log.Printf("Warning: failed to release account slot for %d (req=%s): %v", accountID, requestID, err)
 				}
 			},
 		}, nil
@@ -77,7 +94,10 @@ func (s *ConcurrencyService) AcquireUserSlot(ctx context.Context, userID int64,
 		}, nil
 	}
 
-	acquired, err := s.cache.AcquireUserSlot(ctx, userID, maxConcurrency)
+	// Generate unique request ID for this slot
+	requestID := generateRequestID()
+
+	acquired, err := s.cache.AcquireUserSlot(ctx, userID, maxConcurrency, requestID)
 	if err != nil {
 		return nil, err
 	}
@@ -88,8 +108,8 @@ func (s *ConcurrencyService) AcquireUserSlot(ctx context.Context, userID int64,
 			ReleaseFunc: func() {
 				bgCtx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
 				defer cancel()
-				if err := s.cache.ReleaseUserSlot(bgCtx, userID); err != nil {
-					log.Printf("Warning: failed to release user slot for %d: %v", userID, err)
+				if err := s.cache.ReleaseUserSlot(bgCtx, userID, requestID); err != nil {
+					log.Printf("Warning: failed to release user slot for %d (req=%s): %v", userID, requestID, err)
 				}
 			},
 		}, nil
@@ -147,3 +167,20 @@ func CalculateMaxWait(userConcurrency int) int {
 	}
 	return userConcurrency + defaultExtraWaitSlots
 }
+
+// GetAccountConcurrencyBatch gets current concurrency counts for multiple accounts
+// Returns a map of accountID -> current concurrency count
+func (s *ConcurrencyService) GetAccountConcurrencyBatch(ctx context.Context, accountIDs []int64) (map[int64]int, error) {
+	result := make(map[int64]int)
+
+	for _, accountID := range accountIDs {
+		count, err := s.cache.GetAccountConcurrency(ctx, accountID)
+		if err != nil {
+			// If key doesn't exist in Redis, count is 0
+			count = 0
+		}
+		result[accountID] = count
+	}
+
+	return result, nil
+}

backend/internal/service/crs_sync_service.go

@@ -0,0 +1,961 @@
+package service
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
+)
+
+type CRSSyncService struct {
+	accountRepo        ports.AccountRepository
+	proxyRepo          ports.ProxyRepository
+	oauthService       *OAuthService
+	openaiOAuthService *OpenAIOAuthService
+}
+
+func NewCRSSyncService(
+	accountRepo ports.AccountRepository,
+	proxyRepo ports.ProxyRepository,
+	oauthService *OAuthService,
+	openaiOAuthService *OpenAIOAuthService,
+) *CRSSyncService {
+	return &CRSSyncService{
+		accountRepo:        accountRepo,
+		proxyRepo:          proxyRepo,
+		oauthService:       oauthService,
+		openaiOAuthService: openaiOAuthService,
+	}
+}
+
+type SyncFromCRSInput struct {
+	BaseURL     string
+	Username    string
+	Password    string
+	SyncProxies bool
+}
+
+type SyncFromCRSItemResult struct {
+	CRSAccountID string `json:"crs_account_id"`
+	Kind         string `json:"kind"`
+	Name         string `json:"name"`
+	Action       string `json:"action"` // created/updated/failed/skipped
+	Error        string `json:"error,omitempty"`
+}
+
+type SyncFromCRSResult struct {
+	Created int                     `json:"created"`
+	Updated int                     `json:"updated"`
+	Skipped int                     `json:"skipped"`
+	Failed  int                     `json:"failed"`
+	Items   []SyncFromCRSItemResult `json:"items"`
+}
+
+type crsLoginResponse struct {
+	Success  bool   `json:"success"`
+	Token    string `json:"token"`
+	Message  string `json:"message"`
+	Error    string `json:"error"`
+	Username string `json:"username"`
+}
+
+type crsExportResponse struct {
+	Success bool   `json:"success"`
+	Error   string `json:"error"`
+	Message string `json:"message"`
+	Data    struct {
+		ExportedAt              string                      `json:"exportedAt"`
+		ClaudeAccounts          []crsClaudeAccount          `json:"claudeAccounts"`
+		ClaudeConsoleAccounts   []crsConsoleAccount         `json:"claudeConsoleAccounts"`
+		OpenAIOAuthAccounts     []crsOpenAIOAuthAccount     `json:"openaiOAuthAccounts"`
+		OpenAIResponsesAccounts []crsOpenAIResponsesAccount `json:"openaiResponsesAccounts"`
+	} `json:"data"`
+}
+
+type crsProxy struct {
+	Protocol string `json:"protocol"`
+	Host     string `json:"host"`
+	Port     int    `json:"port"`
+	Username string `json:"username"`
+	Password string `json:"password"`
+}
+
+type crsClaudeAccount 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/setup-token
+	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 crsConsoleAccount 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"`
+	MaxConcurrentTasks int            `json:"maxConcurrentTasks"`
+	Proxy              *crsProxy      `json:"proxy"`
+	Credentials        map[string]any `json:"credentials"`
+}
+
+type crsOpenAIResponsesAccount 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"`
+}
+
+type crsOpenAIOAuthAccount 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"`
+}
+
+func (s *CRSSyncService) SyncFromCRS(ctx context.Context, input SyncFromCRSInput) (*SyncFromCRSResult, error) {
+	baseURL, err := normalizeBaseURL(input.BaseURL)
+	if err != nil {
+		return nil, err
+	}
+	if strings.TrimSpace(input.Username) == "" || strings.TrimSpace(input.Password) == "" {
+		return nil, errors.New("username and password are required")
+	}
+
+	client := &http.Client{Timeout: 20 * time.Second}
+
+	adminToken, err := crsLogin(ctx, client, baseURL, input.Username, input.Password)
+	if err != nil {
+		return nil, err
+	}
+
+	exported, err := crsExportAccounts(ctx, client, baseURL, adminToken)
+	if err != nil {
+		return nil, err
+	}
+
+	now := time.Now().UTC().Format(time.RFC3339)
+
+	result := &SyncFromCRSResult{
+		Items: make(
+			[]SyncFromCRSItemResult,
+			0,
+			len(exported.Data.ClaudeAccounts)+len(exported.Data.ClaudeConsoleAccounts)+len(exported.Data.OpenAIOAuthAccounts)+len(exported.Data.OpenAIResponsesAccounts),
+		),
+	}
+
+	var proxies []model.Proxy
+	if input.SyncProxies {
+		proxies, _ = s.proxyRepo.ListActive(ctx)
+	}
+
+	// Claude OAuth / Setup Token -> sub2api anthropic oauth/setup-token
+	for _, src := range exported.Data.ClaudeAccounts {
+		item := SyncFromCRSItemResult{
+			CRSAccountID: src.ID,
+			Kind:         src.Kind,
+			Name:         src.Name,
+		}
+
+		targetType := strings.TrimSpace(src.AuthType)
+		if targetType == "" {
+			targetType = "oauth"
+		}
+		if targetType != model.AccountTypeOAuth && targetType != model.AccountTypeSetupToken {
+			item.Action = "skipped"
+			item.Error = "unsupported authType: " + targetType
+			result.Skipped++
+			result.Items = append(result.Items, item)
+			continue
+		}
+
+		accessToken, _ := src.Credentials["access_token"].(string)
+		if strings.TrimSpace(accessToken) == "" {
+			item.Action = "failed"
+			item.Error = "missing access_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)
+		// 🔧 Remove /v1 suffix from base_url for Claude accounts
+		cleanBaseURL(credentials, "/v1")
+		// 🔧 Convert expires_at from ISO string to Unix timestamp
+		if expiresAtStr, ok := credentials["expires_at"].(string); ok && expiresAtStr != "" {
+			if t, err := time.Parse(time.RFC3339, expiresAtStr); err == nil {
+				credentials["expires_at"] = t.Unix()
+			}
+		}
+		// 🔧 Add intercept_warmup_requests if not present (defaults to false)
+		if _, exists := credentials["intercept_warmup_requests"]; !exists {
+			credentials["intercept_warmup_requests"] = false
+		}
+		priority := clampPriority(src.Priority)
+		concurrency := 3
+		status := mapCRSStatus(src.IsActive, src.Status)
+
+		// 🔧 Preserve all CRS extra fields and add sync metadata
+		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
+		// Extract org_uuid and account_uuid from CRS credentials to extra
+		if orgUUID, ok := src.Credentials["org_uuid"]; ok {
+			extra["org_uuid"] = orgUUID
+		}
+		if accountUUID, ok := src.Credentials["account_uuid"]; ok {
+			extra["account_uuid"] = accountUUID
+		}
+
+		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.PlatformAnthropic,
+				Type:        targetType,
+				Credentials: model.JSONB(credentials),
+				Extra:       model.JSONB(extra),
+				ProxyID:     proxyID,
+				Concurrency: concurrency,
+				Priority:    priority,
+				Status:      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
+			}
+			// 🔄 Refresh OAuth token after creation
+			if targetType == model.AccountTypeOAuth {
+				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
+		}
+
+		// Update existing
+		existing.Extra = mergeJSONB(existing.Extra, extra)
+		existing.Name = defaultName(src.Name, src.ID)
+		existing.Platform = model.PlatformAnthropic
+		existing.Type = targetType
+		existing.Credentials = mergeJSONB(existing.Credentials, credentials)
+		if proxyID != nil {
+			existing.ProxyID = proxyID
+		}
+		existing.Concurrency = concurrency
+		existing.Priority = priority
+		existing.Status = 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
+		}
+
+		// 🔄 Refresh OAuth token after update
+		if targetType == model.AccountTypeOAuth {
+			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)
+	}
+
+	// Claude Console API Key -> sub2api anthropic apikey
+	for _, src := range exported.Data.ClaudeConsoleAccounts {
+		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)
+		priority := clampPriority(src.Priority)
+		concurrency := 3
+		if src.MaxConcurrentTasks > 0 {
+			concurrency = src.MaxConcurrentTasks
+		}
+		status := mapCRSStatus(src.IsActive, src.Status)
+
+		extra := map[string]any{
+			"crs_account_id": src.ID,
+			"crs_kind":       src.Kind,
+			"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.PlatformAnthropic,
+				Type:        model.AccountTypeApiKey,
+				Credentials: model.JSONB(credentials),
+				Extra:       model.JSONB(extra),
+				ProxyID:     proxyID,
+				Concurrency: concurrency,
+				Priority:    priority,
+				Status:      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.PlatformAnthropic
+		existing.Type = model.AccountTypeApiKey
+		existing.Credentials = mergeJSONB(existing.Credentials, credentials)
+		if proxyID != nil {
+			existing.ProxyID = proxyID
+		}
+		existing.Concurrency = concurrency
+		existing.Priority = priority
+		existing.Status = 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)
+	}
+
+	// OpenAI OAuth -> sub2api openai oauth
+	for _, src := range exported.Data.OpenAIOAuthAccounts {
+		item := SyncFromCRSItemResult{
+			CRSAccountID: src.ID,
+			Kind:         src.Kind,
+			Name:         src.Name,
+		}
+
+		accessToken, _ := src.Credentials["access_token"].(string)
+		if strings.TrimSpace(accessToken) == "" {
+			item.Action = "failed"
+			item.Error = "missing access_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)
+		// Normalize token_type
+		if v, ok := credentials["token_type"].(string); !ok || strings.TrimSpace(v) == "" {
+			credentials["token_type"] = "Bearer"
+		}
+		// 🔧 Convert expires_at from ISO string to Unix timestamp
+		if expiresAtStr, ok := credentials["expires_at"].(string); ok && expiresAtStr != "" {
+			if t, err := time.Parse(time.RFC3339, expiresAtStr); err == nil {
+				credentials["expires_at"] = t.Unix()
+			}
+		}
+		priority := clampPriority(src.Priority)
+		concurrency := 3
+		status := mapCRSStatus(src.IsActive, src.Status)
+
+		// 🔧 Preserve all CRS extra fields and add sync metadata
+		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
+		// Extract email from CRS extra (crs_email -> email)
+		if crsEmail, ok := src.Extra["crs_email"]; ok {
+			extra["email"] = crsEmail
+		}
+
+		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.PlatformOpenAI,
+				Type:        model.AccountTypeOAuth,
+				Credentials: model.JSONB(credentials),
+				Extra:       model.JSONB(extra),
+				ProxyID:     proxyID,
+				Concurrency: concurrency,
+				Priority:    priority,
+				Status:      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
+			}
+			// 🔄 Refresh OAuth token after creation
+			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.PlatformOpenAI
+		existing.Type = model.AccountTypeOAuth
+		existing.Credentials = mergeJSONB(existing.Credentials, credentials)
+		if proxyID != nil {
+			existing.ProxyID = proxyID
+		}
+		existing.Concurrency = concurrency
+		existing.Priority = priority
+		existing.Status = 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
+		}
+
+		// 🔄 Refresh OAuth token after update
+		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)
+	}
+
+	// OpenAI Responses API Key -> sub2api openai apikey
+	for _, src := range exported.Data.OpenAIResponsesAccounts {
+		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
+		}
+
+		if baseURL, ok := src.Credentials["base_url"].(string); !ok || strings.TrimSpace(baseURL) == "" {
+			src.Credentials["base_url"] = "https://api.openai.com"
+		}
+		// 🔧 Remove /v1 suffix from base_url for OpenAI accounts
+		cleanBaseURL(src.Credentials, "/v1")
+
+		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)
+		priority := clampPriority(src.Priority)
+		concurrency := 3
+		status := mapCRSStatus(src.IsActive, src.Status)
+
+		extra := map[string]any{
+			"crs_account_id": src.ID,
+			"crs_kind":       src.Kind,
+			"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.PlatformOpenAI,
+				Type:        model.AccountTypeApiKey,
+				Credentials: model.JSONB(credentials),
+				Extra:       model.JSONB(extra),
+				ProxyID:     proxyID,
+				Concurrency: concurrency,
+				Priority:    priority,
+				Status:      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.PlatformOpenAI
+		existing.Type = model.AccountTypeApiKey
+		existing.Credentials = mergeJSONB(existing.Credentials, credentials)
+		if proxyID != nil {
+			existing.ProxyID = proxyID
+		}
+		existing.Concurrency = concurrency
+		existing.Priority = priority
+		existing.Status = 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
+}
+
+// mergeJSONB merges two JSONB maps without removing keys that are absent in updates.
+func mergeJSONB(existing model.JSONB, updates map[string]any) model.JSONB {
+	out := make(model.JSONB)
+	for k, v := range existing {
+		out[k] = v
+	}
+	for k, v := range updates {
+		out[k] = v
+	}
+	return out
+}
+
+func (s *CRSSyncService) mapOrCreateProxy(ctx context.Context, enabled bool, cached *[]model.Proxy, src *crsProxy, defaultName string) (*int64, error) {
+	if !enabled || src == nil {
+		return nil, nil
+	}
+	protocol := strings.ToLower(strings.TrimSpace(src.Protocol))
+	switch protocol {
+	case "socks":
+		protocol = "socks5"
+	case "socks5h":
+		protocol = "socks5"
+	}
+	host := strings.TrimSpace(src.Host)
+	port := src.Port
+	username := strings.TrimSpace(src.Username)
+	password := strings.TrimSpace(src.Password)
+
+	if protocol == "" || host == "" || port <= 0 {
+		return nil, nil
+	}
+	if protocol != "http" && protocol != "https" && protocol != "socks5" {
+		return nil, nil
+	}
+
+	// Find existing proxy (active only).
+	for _, p := range *cached {
+		if strings.EqualFold(p.Protocol, protocol) &&
+			p.Host == host &&
+			p.Port == port &&
+			p.Username == username &&
+			p.Password == password {
+			id := p.ID
+			return &id, nil
+		}
+	}
+
+	// Create new proxy
+	proxy := &model.Proxy{
+		Name:     defaultProxyName(defaultName, protocol, host, port),
+		Protocol: protocol,
+		Host:     host,
+		Port:     port,
+		Username: username,
+		Password: password,
+		Status:   model.StatusActive,
+	}
+	if err := s.proxyRepo.Create(ctx, proxy); err != nil {
+		return nil, err
+	}
+
+	*cached = append(*cached, *proxy)
+	id := proxy.ID
+	return &id, nil
+}
+
+func defaultProxyName(base, protocol, host string, port int) string {
+	base = strings.TrimSpace(base)
+	if base == "" {
+		base = "crs"
+	}
+	return fmt.Sprintf("%s (%s://%s:%d)", base, protocol, host, port)
+}
+
+func defaultName(name, id string) string {
+	if strings.TrimSpace(name) != "" {
+		return strings.TrimSpace(name)
+	}
+	return "CRS " + id
+}
+
+func clampPriority(priority int) int {
+	if priority < 1 || priority > 100 {
+		return 50
+	}
+	return priority
+}
+
+func sanitizeCredentialsMap(input map[string]any) map[string]any {
+	if input == nil {
+		return map[string]any{}
+	}
+	out := make(map[string]any, len(input))
+	for k, v := range input {
+		// Avoid nil values to keep JSONB cleaner
+		if v != nil {
+			out[k] = v
+		}
+	}
+	return out
+}
+
+func mapCRSStatus(isActive bool, status string) string {
+	if !isActive {
+		return "inactive"
+	}
+	if strings.EqualFold(strings.TrimSpace(status), "error") {
+		return "error"
+	}
+	return "active"
+}
+
+func normalizeBaseURL(raw string) (string, error) {
+	trimmed := strings.TrimSpace(raw)
+	if trimmed == "" {
+		return "", errors.New("base_url is required")
+	}
+	u, err := url.Parse(trimmed)
+	if err != nil || u.Scheme == "" || u.Host == "" {
+		return "", fmt.Errorf("invalid base_url: %s", trimmed)
+	}
+	u.Path = strings.TrimRight(u.Path, "/")
+	return strings.TrimRight(u.String(), "/"), nil
+}
+
+// cleanBaseURL removes trailing suffix from base_url in credentials
+// Used for both Claude and OpenAI accounts to remove /v1
+func cleanBaseURL(credentials map[string]any, suffixToRemove string) {
+	if baseURL, ok := credentials["base_url"].(string); ok && baseURL != "" {
+		trimmed := strings.TrimSpace(baseURL)
+		if strings.HasSuffix(trimmed, suffixToRemove) {
+			credentials["base_url"] = strings.TrimSuffix(trimmed, suffixToRemove)
+		}
+	}
+}
+
+func crsLogin(ctx context.Context, client *http.Client, baseURL, username, password string) (string, error) {
+	payload := map[string]any{
+		"username": username,
+		"password": password,
+	}
+	body, _ := json.Marshal(payload)
+
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, baseURL+"/web/auth/login", bytes.NewReader(body))
+	if err != nil {
+		return "", err
+	}
+	req.Header.Set("Content-Type", "application/json")
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return "", err
+	}
+	defer func() { _ = resp.Body.Close() }()
+
+	raw, _ := io.ReadAll(io.LimitReader(resp.Body, 1<<20))
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return "", fmt.Errorf("crs login failed: status=%d body=%s", resp.StatusCode, string(raw))
+	}
+
+	var parsed crsLoginResponse
+	if err := json.Unmarshal(raw, &parsed); err != nil {
+		return "", fmt.Errorf("crs login parse failed: %w", err)
+	}
+	if !parsed.Success || strings.TrimSpace(parsed.Token) == "" {
+		msg := parsed.Message
+		if msg == "" {
+			msg = parsed.Error
+		}
+		if msg == "" {
+			msg = "unknown error"
+		}
+		return "", errors.New("crs login failed: " + msg)
+	}
+	return parsed.Token, nil
+}
+
+func crsExportAccounts(ctx context.Context, client *http.Client, baseURL, adminToken string) (*crsExportResponse, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, baseURL+"/admin/sync/export-accounts?include_secrets=true", nil)
+	if err != nil {
+		return nil, err
+	}
+	req.Header.Set("Authorization", "Bearer "+adminToken)
+
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer func() { _ = resp.Body.Close() }()
+
+	raw, _ := io.ReadAll(io.LimitReader(resp.Body, 5<<20))
+	if resp.StatusCode < 200 || resp.StatusCode >= 300 {
+		return nil, fmt.Errorf("crs export failed: status=%d body=%s", resp.StatusCode, string(raw))
+	}
+
+	var parsed crsExportResponse
+	if err := json.Unmarshal(raw, &parsed); err != nil {
+		return nil, fmt.Errorf("crs export parse failed: %w", err)
+	}
+	if !parsed.Success {
+		msg := parsed.Message
+		if msg == "" {
+			msg = parsed.Error
+		}
+		if msg == "" {
+			msg = "unknown error"
+		}
+		return nil, errors.New("crs export failed: " + msg)
+	}
+	return &parsed, nil
+}
+
+// refreshOAuthToken attempts to refresh OAuth token for a synced account
+// Returns updated credentials or nil if refresh failed/not applicable
+func (s *CRSSyncService) refreshOAuthToken(ctx context.Context, account *model.Account) model.JSONB {
+	if account.Type != model.AccountTypeOAuth {
+		return nil
+	}
+
+	var newCredentials map[string]any
+	var err error
+
+	switch account.Platform {
+	case model.PlatformAnthropic:
+		if s.oauthService == nil {
+			return nil
+		}
+		tokenInfo, refreshErr := s.oauthService.RefreshAccountToken(ctx, account)
+		if refreshErr != nil {
+			err = refreshErr
+		} else {
+			// Preserve existing credentials
+			newCredentials = make(map[string]any)
+			for k, v := range account.Credentials {
+				newCredentials[k] = v
+			}
+			// Update token fields
+			newCredentials["access_token"] = tokenInfo.AccessToken
+			newCredentials["token_type"] = tokenInfo.TokenType
+			newCredentials["expires_in"] = tokenInfo.ExpiresIn
+			newCredentials["expires_at"] = tokenInfo.ExpiresAt
+			if tokenInfo.RefreshToken != "" {
+				newCredentials["refresh_token"] = tokenInfo.RefreshToken
+			}
+			if tokenInfo.Scope != "" {
+				newCredentials["scope"] = tokenInfo.Scope
+			}
+		}
+	case model.PlatformOpenAI:
+		if s.openaiOAuthService == nil {
+			return nil
+		}
+		tokenInfo, refreshErr := s.openaiOAuthService.RefreshAccountToken(ctx, account)
+		if refreshErr != nil {
+			err = refreshErr
+		} else {
+			newCredentials = s.openaiOAuthService.BuildAccountCredentials(tokenInfo)
+			// Preserve non-token settings from existing credentials
+			for k, v := range account.Credentials {
+				if _, exists := newCredentials[k]; !exists {
+					newCredentials[k] = v
+				}
+			}
+		}
+	default:
+		return nil
+	}
+
+	if err != nil {
+		// Log but don't fail the sync - token might still be valid or refreshable later
+		return nil
+	}
+
+	return model.JSONB(newCredentials)
+}

backend/internal/service/dashboard_service.go

@@ -0,0 +1,77 @@
+package service
+
+import (
+	"context"
+	"fmt"
+	"time"
+
+	"github.com/Wei-Shaw/sub2api/internal/pkg/usagestats"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
+)
+
+// DashboardService provides aggregated statistics for admin dashboard.
+type DashboardService struct {
+	usageRepo ports.UsageLogRepository
+}
+
+func NewDashboardService(usageRepo ports.UsageLogRepository) *DashboardService {
+	return &DashboardService{
+		usageRepo: usageRepo,
+	}
+}
+
+func (s *DashboardService) GetDashboardStats(ctx context.Context) (*usagestats.DashboardStats, error) {
+	stats, err := s.usageRepo.GetDashboardStats(ctx)
+	if err != nil {
+		return nil, fmt.Errorf("get dashboard stats: %w", err)
+	}
+	return stats, nil
+}
+
+func (s *DashboardService) GetUsageTrendWithFilters(ctx context.Context, startTime, endTime time.Time, granularity string, userID, apiKeyID int64) ([]usagestats.TrendDataPoint, error) {
+	trend, err := s.usageRepo.GetUsageTrendWithFilters(ctx, startTime, endTime, granularity, userID, apiKeyID)
+	if err != nil {
+		return nil, fmt.Errorf("get usage trend with filters: %w", err)
+	}
+	return trend, nil
+}
+
+func (s *DashboardService) GetModelStatsWithFilters(ctx context.Context, startTime, endTime time.Time, userID, apiKeyID int64) ([]usagestats.ModelStat, error) {
+	stats, err := s.usageRepo.GetModelStatsWithFilters(ctx, startTime, endTime, userID, apiKeyID, 0)
+	if err != nil {
+		return nil, fmt.Errorf("get model stats with filters: %w", err)
+	}
+	return stats, nil
+}
+
+func (s *DashboardService) GetApiKeyUsageTrend(ctx context.Context, startTime, endTime time.Time, granularity string, limit int) ([]usagestats.ApiKeyUsageTrendPoint, error) {
+	trend, err := s.usageRepo.GetApiKeyUsageTrend(ctx, startTime, endTime, granularity, limit)
+	if err != nil {
+		return nil, fmt.Errorf("get api key usage trend: %w", err)
+	}
+	return trend, nil
+}
+
+func (s *DashboardService) GetUserUsageTrend(ctx context.Context, startTime, endTime time.Time, granularity string, limit int) ([]usagestats.UserUsageTrendPoint, error) {
+	trend, err := s.usageRepo.GetUserUsageTrend(ctx, startTime, endTime, granularity, limit)
+	if err != nil {
+		return nil, fmt.Errorf("get user usage trend: %w", err)
+	}
+	return trend, nil
+}
+
+func (s *DashboardService) GetBatchUserUsageStats(ctx context.Context, userIDs []int64) (map[int64]*usagestats.BatchUserUsageStats, error) {
+	stats, err := s.usageRepo.GetBatchUserUsageStats(ctx, userIDs)
+	if err != nil {
+		return nil, fmt.Errorf("get batch user usage stats: %w", err)
+	}
+	return stats, nil
+}
+
+func (s *DashboardService) GetBatchApiKeyUsageStats(ctx context.Context, apiKeyIDs []int64) (map[int64]*usagestats.BatchApiKeyUsageStats, error) {
+	stats, err := s.usageRepo.GetBatchApiKeyUsageStats(ctx, apiKeyIDs)
+	if err != nil {
+		return nil, fmt.Errorf("get batch api key usage stats: %w", err)
+	}
+	return stats, nil
+}

backend/internal/service/email_service.go

@@ -6,11 +6,11 @@ import (
 	"crypto/tls"
 	"errors"
 	"fmt"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 	"math/big"
 	"net/smtp"
 	"strconv"
-	"sub2api/internal/model"
-	"sub2api/internal/service/ports"
 	"time"
 )
 

backend/internal/service/gateway_service.go

@@ -16,10 +16,12 @@ import (
 	"strings"
 	"time"
 
-	"sub2api/internal/config"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/claude"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/claude"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
+	"github.com/tidwall/gjson"
+	"github.com/tidwall/sjson"
 
 	"github.com/gin-gonic/gin"
 )
@@ -358,6 +360,25 @@ func (s *GatewayService) getOAuthToken(ctx context.Context, account *model.Accou
 	return accessToken, "oauth", nil
 }
 
+// 重试相关常量
+const (
+	maxRetries = 3               // 最大重试次数
+	retryDelay = 2 * time.Second // 重试等待时间
+)
+
+// shouldRetryUpstreamError 判断是否应该重试上游错误
+// OAuth/Setup Token 账号：仅 403 重试
+// API Key 账号：未配置的错误码重试
+func (s *GatewayService) shouldRetryUpstreamError(account *model.Account, statusCode int) bool {
+	// OAuth/Setup Token 账号：仅 403 重试
+	if account.IsOAuth() {
+		return statusCode == 403
+	}
+
+	// API Key 账号：未配置的错误码重试
+	return !account.ShouldHandleErrorCode(statusCode)
+}
+
 // Forward 转发请求到Claude API
 func (s *GatewayService) Forward(ctx context.Context, c *gin.Context, account *model.Account, body []byte) (*ForwardResult, error) {
 	startTime := time.Now()
@@ -371,6 +392,18 @@ func (s *GatewayService) Forward(ctx context.Context, c *gin.Context, account *m
 		return nil, fmt.Errorf("parse request: %w", err)
 	}
 
+	if !gjson.GetBytes(body, "system").Exists() {
+		body, _ = sjson.SetBytes(body, "system", []any{
+			map[string]any{
+				"type": "text",
+				"text": "You are Claude Code, Anthropic's official CLI for Claude.",
+				"cache_control": map[string]string{
+					"type": "ephemeral",
+				},
+			},
+		})
+	}
+
 	// 应用模型映射（仅对apikey类型账号）
 	originalModel := req.Model
 	if account.Type == model.AccountTypeApiKey {
@@ -389,26 +422,51 @@ func (s *GatewayService) Forward(ctx context.Context, c *gin.Context, account *m
 		return nil, err
 	}
 
-	// 构建上游请求
-	upstreamReq, err := s.buildUpstreamRequest(ctx, c, account, body, token, tokenType)
-	if err != nil {
-		return nil, err
-	}
-
 	// 获取代理URL
 	proxyURL := ""
 	if account.ProxyID != nil && account.Proxy != nil {
 		proxyURL = account.Proxy.URL()
 	}
 
-	// 发送请求
-	resp, err := s.httpUpstream.Do(upstreamReq, proxyURL)
-	if err != nil {
-		return nil, fmt.Errorf("upstream request failed: %w", err)
+	// 重试循环
+	var resp *http.Response
+	for attempt := 1; attempt <= maxRetries; attempt++ {
+		// 构建上游请求（每次重试需要重新构建，因为请求体需要重新读取）
+		upstreamReq, err := s.buildUpstreamRequest(ctx, c, account, body, token, tokenType)
+		if err != nil {
+			return nil, err
+		}
+
+		// 发送请求
+		resp, err = s.httpUpstream.Do(upstreamReq, proxyURL)
+		if err != nil {
+			return nil, fmt.Errorf("upstream request failed: %w", err)
+		}
+
+		// 检查是否需要重试
+		if resp.StatusCode >= 400 && s.shouldRetryUpstreamError(account, resp.StatusCode) {
+			if attempt < maxRetries {
+				log.Printf("Account %d: upstream error %d, retry %d/%d after %v",
+					account.ID, resp.StatusCode, attempt, maxRetries, retryDelay)
+				_ = resp.Body.Close()
+				time.Sleep(retryDelay)
+				continue
+			}
+			// 最后一次尝试也失败，跳出循环处理重试耗尽
+			break
+		}
+
+		// 不需要重试（成功或不可重试的错误），跳出循环
+		break
 	}
 	defer func() { _ = resp.Body.Close() }()
 
-	// 处理错误响应（包括401，由后台TokenRefreshService维护token有效性）
+	// 处理重试耗尽的情况
+	if resp.StatusCode >= 400 && s.shouldRetryUpstreamError(account, resp.StatusCode) {
+		return s.handleRetryExhaustedError(ctx, resp, c, account)
+	}
+
+	// 处理错误响应（不可重试的错误）
 	if resp.StatusCode >= 400 {
 		return s.handleErrorResponse(ctx, resp, c, account)
 	}
@@ -570,19 +628,6 @@ func (s *GatewayService) getBetaHeader(body []byte, clientBetaHeader string) str
 func (s *GatewayService) handleErrorResponse(ctx context.Context, resp *http.Response, c *gin.Context, account *model.Account) (*ForwardResult, error) {
 	body, _ := io.ReadAll(resp.Body)
 
-	// apikey 类型账号：检查自定义错误码配置
-	// 如果启用且错误码不在列表中，返回通用 500 错误（不做任何账号状态处理）
-	if !account.ShouldHandleErrorCode(resp.StatusCode) {
-		c.JSON(http.StatusInternalServerError, gin.H{
-			"type": "error",
-			"error": gin.H{
-				"type":    "upstream_error",
-				"message": "Upstream gateway error",
-			},
-		})
-		return nil, fmt.Errorf("upstream error: %d (not in custom error codes)", resp.StatusCode)
-	}
-
 	// 处理上游错误，标记账号状态
 	s.rateLimitService.HandleUpstreamError(ctx, account, resp.StatusCode, resp.Header, body)
 
@@ -591,6 +636,9 @@ func (s *GatewayService) handleErrorResponse(ctx context.Context, resp *http.Res
 	var statusCode int
 
 	switch resp.StatusCode {
+	case 400:
+		c.Data(http.StatusBadRequest, "application/json", body)
+		return nil, fmt.Errorf("upstream error: %d", resp.StatusCode)
 	case 401:
 		statusCode = http.StatusBadGateway
 		errType = "upstream_error"
@@ -629,6 +677,34 @@ func (s *GatewayService) handleErrorResponse(ctx context.Context, resp *http.Res
 	return nil, fmt.Errorf("upstream error: %d", resp.StatusCode)
 }
 
+// handleRetryExhaustedError 处理重试耗尽后的错误
+// OAuth 403：标记账号异常
+// API Key 未配置错误码：仅返回错误，不标记账号
+func (s *GatewayService) handleRetryExhaustedError(ctx context.Context, resp *http.Response, c *gin.Context, account *model.Account) (*ForwardResult, error) {
+	body, _ := io.ReadAll(resp.Body)
+	statusCode := resp.StatusCode
+
+	// OAuth/Setup Token 账号的 403：标记账号异常
+	if account.IsOAuth() && statusCode == 403 {
+		s.rateLimitService.HandleUpstreamError(ctx, account, statusCode, resp.Header, body)
+		log.Printf("Account %d: marked as error after %d retries for status %d", account.ID, maxRetries, statusCode)
+	} else {
+		// API Key 未配置错误码：不标记账号状态
+		log.Printf("Account %d: upstream error %d after %d retries (not marking account)", account.ID, statusCode, maxRetries)
+	}
+
+	// 返回统一的重试耗尽错误响应
+	c.JSON(http.StatusBadGateway, gin.H{
+		"type": "error",
+		"error": gin.H{
+			"type":    "upstream_error",
+			"message": "Upstream request failed after retries",
+		},
+	})
+
+	return nil, fmt.Errorf("upstream error: %d (retries exhausted)", statusCode)
+}
+
 // streamingResult 流式响应结果
 type streamingResult struct {
 	usage        *ClaudeUsage

backend/internal/service/group_service.go

@@ -4,9 +4,9 @@ import (
 	"context"
 	"errors"
 	"fmt"
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"gorm.io/gorm"
 )

backend/internal/service/identity_service.go

@@ -7,11 +7,11 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 	"log"
 	"net/http"
 	"regexp"
 	"strconv"
-	"sub2api/internal/service/ports"
 	"time"
 )
 

backend/internal/service/oauth_service.go

@@ -6,9 +6,9 @@ import (
 	"log"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/oauth"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/oauth"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 )
 
 // ClaudeOAuthClient handles HTTP requests for Claude OAuth flows

backend/internal/service/openai_gateway_service.go

@@ -15,9 +15,9 @@ import (
 	"strings"
 	"time"
 
-	"sub2api/internal/config"
-	"sub2api/internal/model"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/config"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 
 	"github.com/gin-gonic/gin"
 )

backend/internal/service/openai_oauth_service.go

@@ -5,9 +5,9 @@ import (
 	"fmt"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/openai"
-	"sub2api/internal/service/ports"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
+	"github.com/Wei-Shaw/sub2api/internal/service/ports"
 )
 
 // OpenAIOAuthService handles OpenAI OAuth authentication flows

backend/internal/service/ports/account.go

@@ -4,13 +4,16 @@ import (
 	"context"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 )
 
 type AccountRepository interface {
 	Create(ctx context.Context, account *model.Account) error
 	GetByID(ctx context.Context, id int64) (*model.Account, error)
+	// GetByCRSAccountID finds an account previously synced from CRS.
+	// Returns (nil, nil) if not found.
+	GetByCRSAccountID(ctx context.Context, crsAccountID string) (*model.Account, error)
 	Update(ctx context.Context, account *model.Account) error
 	Delete(ctx context.Context, id int64) error
 
@@ -35,4 +38,17 @@ type AccountRepository interface {
 	ClearRateLimit(ctx context.Context, id int64) error
 	UpdateSessionWindow(ctx context.Context, id int64, start, end *time.Time, status string) error
 	UpdateExtra(ctx context.Context, id int64, updates map[string]any) error
+	BulkUpdate(ctx context.Context, ids []int64, updates AccountBulkUpdate) (int64, error)
+}
+
+// AccountBulkUpdate describes the fields that can be updated in a bulk operation.
+// Nil pointers mean "do not change".
+type AccountBulkUpdate struct {
+	Name        *string
+	ProxyID     *int64
+	Concurrency *int
+	Priority    *int
+	Status      *string
+	Credentials map[string]any
+	Extra       map[string]any
 }

backend/internal/service/ports/api_key.go

@@ -3,8 +3,8 @@ package ports
 import (
 	"context"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 )
 
 type ApiKeyRepository interface {

backend/internal/service/ports/concurrency_cache.go

@@ -3,17 +3,21 @@ package ports
 import "context"
 
 // ConcurrencyCache defines cache operations for concurrency service
+// Uses independent keys per request slot with native Redis TTL for automatic cleanup
 type ConcurrencyCache interface {
-	// Slot management
-	AcquireAccountSlot(ctx context.Context, accountID int64, maxConcurrency int) (bool, error)
-	ReleaseAccountSlot(ctx context.Context, accountID int64) error
+	// Account slot management - each slot is a separate key with independent TTL
+	// Key format: concurrency:account:{accountID}:{requestID}
+	AcquireAccountSlot(ctx context.Context, accountID int64, maxConcurrency int, requestID string) (bool, error)
+	ReleaseAccountSlot(ctx context.Context, accountID int64, requestID string) error
 	GetAccountConcurrency(ctx context.Context, accountID int64) (int, error)
 
-	AcquireUserSlot(ctx context.Context, userID int64, maxConcurrency int) (bool, error)
-	ReleaseUserSlot(ctx context.Context, userID int64) error
+	// User slot management - each slot is a separate key with independent TTL
+	// Key format: concurrency:user:{userID}:{requestID}
+	AcquireUserSlot(ctx context.Context, userID int64, maxConcurrency int, requestID string) (bool, error)
+	ReleaseUserSlot(ctx context.Context, userID int64, requestID string) error
 	GetUserConcurrency(ctx context.Context, userID int64) (int, error)
 
-	// Wait queue
+	// Wait queue - uses counter with TTL set only on creation
 	IncrementWaitCount(ctx context.Context, userID int64, maxWait int) (bool, error)
 	DecrementWaitCount(ctx context.Context, userID int64) error
 }

backend/internal/service/ports/group.go

@@ -3,8 +3,8 @@ package ports
 import (
 	"context"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 
 	"gorm.io/gorm"
 )

backend/internal/service/ports/openai_oauth.go

@@ -3,7 +3,7 @@ package ports
 import (
 	"context"
 
-	"sub2api/internal/pkg/openai"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/openai"
 )
 
 // OpenAIOAuthClient interface for OpenAI OAuth operations

backend/internal/service/ports/proxy.go

@@ -3,8 +3,8 @@ package ports
 import (
 	"context"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 )
 
 type ProxyRepository interface {

backend/internal/service/ports/redeem_code.go

@@ -3,8 +3,8 @@ package ports
 import (
 	"context"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 )
 
 type RedeemCodeRepository interface {

backend/internal/service/ports/setting.go

@@ -3,7 +3,7 @@ package ports
 import (
 	"context"
 
-	"sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/model"
 )
 
 type SettingRepository interface {

backend/internal/service/ports/usage_log.go

@@ -4,9 +4,9 @@ import (
 	"context"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
-	"sub2api/internal/pkg/usagestats"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/usagestats"
 )
 
 type UsageLogRepository interface {
@@ -25,4 +25,25 @@ type UsageLogRepository interface {
 
 	GetAccountWindowStats(ctx context.Context, accountID int64, startTime time.Time) (*usagestats.AccountStats, error)
 	GetAccountTodayStats(ctx context.Context, accountID int64) (*usagestats.AccountStats, error)
+
+	// Admin dashboard stats
+	GetDashboardStats(ctx context.Context) (*usagestats.DashboardStats, error)
+	GetUsageTrendWithFilters(ctx context.Context, startTime, endTime time.Time, granularity string, userID, apiKeyID int64) ([]usagestats.TrendDataPoint, error)
+	GetModelStatsWithFilters(ctx context.Context, startTime, endTime time.Time, userID, apiKeyID, accountID int64) ([]usagestats.ModelStat, 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)
+	GetBatchUserUsageStats(ctx context.Context, userIDs []int64) (map[int64]*usagestats.BatchUserUsageStats, error)
+	GetBatchApiKeyUsageStats(ctx context.Context, apiKeyIDs []int64) (map[int64]*usagestats.BatchApiKeyUsageStats, error)
+
+	// User dashboard stats
+	GetUserDashboardStats(ctx context.Context, userID int64) (*usagestats.UserDashboardStats, error)
+	GetUserUsageTrendByUserID(ctx context.Context, userID int64, startTime, endTime time.Time, granularity string) ([]usagestats.TrendDataPoint, error)
+	GetUserModelStats(ctx context.Context, userID int64, startTime, endTime time.Time) ([]usagestats.ModelStat, error)
+
+	// Admin usage listing/stats
+	ListWithFilters(ctx context.Context, params pagination.PaginationParams, filters usagestats.UsageLogFilters) ([]model.UsageLog, *pagination.PaginationResult, error)
+	GetGlobalStats(ctx context.Context, startTime, endTime time.Time) (*usagestats.UsageStats, error)
+
+	// Account stats
+	GetAccountUsageStats(ctx context.Context, accountID int64, startTime, endTime time.Time) (*usagestats.AccountUsageStatsResponse, error)
 }

backend/internal/service/ports/user.go

@@ -3,8 +3,8 @@ package ports
 import (
 	"context"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 )
 
 type UserRepository interface {

backend/internal/service/ports/user_subscription.go

@@ -4,8 +4,8 @@ import (
 	"context"
 	"time"
 
-	"sub2api/internal/model"
-	"sub2api/internal/pkg/pagination"
+	"github.com/Wei-Shaw/sub2api/internal/model"
+	"github.com/Wei-Shaw/sub2api/internal/pkg/pagination"
 )
 
 type UserSubscriptionRepository interface {