refactor(layout): relocate go.mod to backend/ and clean import paths to module root

- Relocated go.mod and go.sum into backend/ root directory
- Stripped redundant backend/ segments from all Go imports (github.com/Rain-kl/Wavelet/...)
- Unified Makefile, swagger, and build-test to execute in backend/ module context
- Ensured 100% build-test, code-check, format, and swagger pass

backend/plugins/domain/admin/handlers_auth_source.go

@@ -7,9 +7,9 @@ import (
 	"net/http"
 	"strconv"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
-	"github.com/Rain-kl/Wavelet/backend/plugins/domain/auth"
-	"github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+	"github.com/Rain-kl/Wavelet/pkg/response"
+	"github.com/Rain-kl/Wavelet/plugins/domain/auth"
+	"github.com/Rain-kl/Wavelet/plugins/infra/database"
 	"github.com/gin-gonic/gin"
 )
 

backend/plugins/domain/admin/handlers_cache.go

@@ -10,8 +10,8 @@ import (
 
 	"github.com/gin-gonic/gin"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
-	"github.com/Rain-kl/Wavelet/backend/plugins/infra/storage/diskcache"
+	"github.com/Rain-kl/Wavelet/pkg/response"
+	"github.com/Rain-kl/Wavelet/plugins/infra/storage/diskcache"
 )
 
 type updateCacheConfigRequest struct {

backend/plugins/domain/admin/handlers_config.go

@@ -13,13 +13,13 @@ import (
 	"strings"
 	"time"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
-	mail "github.com/Rain-kl/Wavelet/backend/pkg/mail"
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
-	"github.com/Rain-kl/Wavelet/backend/plugins/domain/cap"
-	cachepkg "github.com/Rain-kl/Wavelet/backend/plugins/infra/cache"
-	db "github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
-	"github.com/Rain-kl/Wavelet/backend/plugins/infra/storage/objectstore"
+	"github.com/Rain-kl/Wavelet/pkg/logger"
+	mail "github.com/Rain-kl/Wavelet/pkg/mail"
+	"github.com/Rain-kl/Wavelet/pkg/response"
+	"github.com/Rain-kl/Wavelet/plugins/domain/cap"
+	cachepkg "github.com/Rain-kl/Wavelet/plugins/infra/cache"
+	db "github.com/Rain-kl/Wavelet/plugins/infra/database"
+	"github.com/Rain-kl/Wavelet/plugins/infra/storage/objectstore"
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
 )

backend/plugins/domain/admin/handlers_db.go

@@ -19,9 +19,9 @@ import (
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/config"
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
-	db "github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+	"github.com/Rain-kl/Wavelet/pkg/config"
+	"github.com/Rain-kl/Wavelet/pkg/response"
+	db "github.com/Rain-kl/Wavelet/plugins/infra/database"
 )
 
 const (

backend/plugins/domain/admin/handlers_logs.go

@@ -15,14 +15,14 @@ import (
 	"strings"
 	"time"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/config"
-	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
-	"github.com/Rain-kl/Wavelet/backend/pkg/util"
-	"github.com/Rain-kl/Wavelet/backend/plugins/domain/risk_control"
-	"github.com/Rain-kl/Wavelet/backend/plugins/domain/risk_control/logstore"
-	"github.com/Rain-kl/Wavelet/backend/plugins/drivers/driver_asynq_worker"
-	db "github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+	"github.com/Rain-kl/Wavelet/pkg/config"
+	"github.com/Rain-kl/Wavelet/pkg/logger"
+	"github.com/Rain-kl/Wavelet/pkg/response"
+	"github.com/Rain-kl/Wavelet/pkg/util"
+	"github.com/Rain-kl/Wavelet/plugins/domain/risk_control"
+	"github.com/Rain-kl/Wavelet/plugins/domain/risk_control/logstore"
+	"github.com/Rain-kl/Wavelet/plugins/drivers/driver_asynq_worker"
+	db "github.com/Rain-kl/Wavelet/plugins/infra/database"
 	"github.com/gin-gonic/gin"
 	"github.com/gorilla/websocket"
 )

backend/plugins/domain/admin/handlers_status.go

@@ -16,10 +16,10 @@ import (
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/config"
-	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
-	"github.com/Rain-kl/Wavelet/backend/plugins/domain/risk_control/logstore"
+	"github.com/Rain-kl/Wavelet/pkg/config"
+	"github.com/Rain-kl/Wavelet/pkg/logger"
+	"github.com/Rain-kl/Wavelet/pkg/response"
+	"github.com/Rain-kl/Wavelet/plugins/domain/risk_control/logstore"
 )
 
 var startTime = time.Now()

backend/plugins/domain/admin/handlers_tasks.go

@@ -14,10 +14,10 @@ import (
 	"github.com/gin-gonic/gin"
 	"github.com/robfig/cron/v3"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
-	"github.com/Rain-kl/Wavelet/backend/plugins/drivers/driver_asynq_cron"
-	"github.com/Rain-kl/Wavelet/backend/plugins/drivers/driver_asynq_worker"
+	"github.com/Rain-kl/Wavelet/pkg/logger"
+	"github.com/Rain-kl/Wavelet/pkg/response"
+	"github.com/Rain-kl/Wavelet/plugins/drivers/driver_asynq_cron"
+	"github.com/Rain-kl/Wavelet/plugins/drivers/driver_asynq_worker"
 )
 
 // ListTaskTypes 获取支持的任务类型列表

backend/plugins/domain/admin/handlers_templates.go

@@ -11,7 +11,7 @@ import (
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
+	"github.com/Rain-kl/Wavelet/pkg/response"
 )
 
 // CreateTemplateRequest 创建模板请求

backend/plugins/domain/admin/handlers_updater.go

@@ -24,10 +24,10 @@ import (
 	"github.com/gin-gonic/gin"
 	"golang.org/x/mod/semver"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/buildinfo"
-	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
-	"github.com/Rain-kl/Wavelet/backend/pkg/util"
+	"github.com/Rain-kl/Wavelet/pkg/buildinfo"
+	"github.com/Rain-kl/Wavelet/pkg/logger"
+	"github.com/Rain-kl/Wavelet/pkg/response"
+	"github.com/Rain-kl/Wavelet/pkg/util"
 )
 
 const (

backend/plugins/domain/admin/handlers_user.go

@@ -15,13 +15,13 @@ import (
 	"github.com/gin-gonic/gin"
 	"gorm.io/gorm"
 
-	"github.com/Rain-kl/Wavelet/backend/core/contracts"
-	"github.com/Rain-kl/Wavelet/backend/pkg/idgen"
-	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
-	"github.com/Rain-kl/Wavelet/backend/pkg/util"
-	"github.com/Rain-kl/Wavelet/backend/plugins/domain/auth"
-	db "github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+	"github.com/Rain-kl/Wavelet/core/contracts"
+	"github.com/Rain-kl/Wavelet/pkg/idgen"
+	"github.com/Rain-kl/Wavelet/pkg/logger"
+	"github.com/Rain-kl/Wavelet/pkg/response"
+	"github.com/Rain-kl/Wavelet/pkg/util"
+	"github.com/Rain-kl/Wavelet/plugins/domain/auth"
+	db "github.com/Rain-kl/Wavelet/plugins/infra/database"
 )
 
 const minPasswordLength = 8

backend/plugins/domain/admin/middlewares.go

@@ -4,11 +4,11 @@
 package admin
 
 import (
-	"github.com/Rain-kl/Wavelet/backend/core/contracts"
-	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
-	"github.com/Rain-kl/Wavelet/backend/pkg/response"
-	"github.com/Rain-kl/Wavelet/backend/pkg/trace"
-	"github.com/Rain-kl/Wavelet/backend/pkg/util"
+	"github.com/Rain-kl/Wavelet/core/contracts"
+	"github.com/Rain-kl/Wavelet/pkg/logger"
+	"github.com/Rain-kl/Wavelet/pkg/response"
+	"github.com/Rain-kl/Wavelet/pkg/trace"
+	"github.com/Rain-kl/Wavelet/pkg/util"
 	"github.com/gin-gonic/gin"
 )
 

backend/plugins/domain/admin/plugin.go

@@ -8,9 +8,9 @@ import (
 	"context"
 	"embed"
 
-	"github.com/Rain-kl/Wavelet/backend/core"
-	"github.com/Rain-kl/Wavelet/backend/core/contracts"
-	"github.com/Rain-kl/Wavelet/backend/core/extpoints"
+	"github.com/Rain-kl/Wavelet/core"
+	"github.com/Rain-kl/Wavelet/core/contracts"
+	"github.com/Rain-kl/Wavelet/core/extpoints"
 	"github.com/gin-gonic/gin"
 	"github.com/hibiken/asynq"
 )

backend/plugins/domain/admin/plugin_test.go

@@ -10,8 +10,8 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 
-	"github.com/Rain-kl/Wavelet/backend/core"
-	"github.com/Rain-kl/Wavelet/backend/plugins/domain/admin"
+	"github.com/Rain-kl/Wavelet/core"
+	"github.com/Rain-kl/Wavelet/plugins/domain/admin"
 )
 
 func TestAdminPluginUnit(t *testing.T) {

backend/plugins/domain/admin/repository.go

@@ -16,11 +16,11 @@ import (
 	"github.com/shopspring/decimal"
 	"gorm.io/gorm"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/cache/ram"
-	"github.com/Rain-kl/Wavelet/backend/pkg/idgen"
-	"github.com/Rain-kl/Wavelet/backend/pkg/util"
-	cachepkg "github.com/Rain-kl/Wavelet/backend/plugins/infra/cache"
-	db "github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+	"github.com/Rain-kl/Wavelet/pkg/cache/ram"
+	"github.com/Rain-kl/Wavelet/pkg/idgen"
+	"github.com/Rain-kl/Wavelet/pkg/util"
+	cachepkg "github.com/Rain-kl/Wavelet/plugins/infra/cache"
+	db "github.com/Rain-kl/Wavelet/plugins/infra/database"
 )
 
 const (

backend/plugins/domain/admin/restart_unix.go

@@ -12,7 +12,7 @@ import (
 	"path/filepath"
 	"syscall"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/logger"
+	"github.com/Rain-kl/Wavelet/pkg/logger"
 )
 
 const installedBinaryMode = 0o755

backend/plugins/domain/admin/system_config_cache.go

@@ -12,9 +12,9 @@ import (
 
 	"gorm.io/gorm"
 
-	"github.com/Rain-kl/Wavelet/backend/pkg/cache/ram"
-	"github.com/Rain-kl/Wavelet/backend/pkg/util"
-	cachepkg "github.com/Rain-kl/Wavelet/backend/plugins/infra/cache"
+	"github.com/Rain-kl/Wavelet/pkg/cache/ram"
+	"github.com/Rain-kl/Wavelet/pkg/util"
+	cachepkg "github.com/Rain-kl/Wavelet/plugins/infra/cache"
 )
 
 const (

backend/plugins/domain/admin/system_config_test.go

@@ -14,8 +14,8 @@ import (
 	"github.com/redis/go-redis/v9/maintnotifications"
 	"gorm.io/gorm"
 
-	"github.com/Rain-kl/Wavelet/backend/plugins/infra/cache"
-	"github.com/Rain-kl/Wavelet/backend/plugins/infra/database"
+	"github.com/Rain-kl/Wavelet/plugins/infra/cache"
+	"github.com/Rain-kl/Wavelet/plugins/infra/database"
 )
 
 func setupSystemConfigTest(t *testing.T) (*gorm.DB, func()) {