feat(log): 解耦用户访问日志存储，支持切换日志主库

用户访问日志可在 ClickHouse、PostgreSQL、SQLite 之间切换。
关闭 ClickHouse 时由主库承接写入与查询；切换任务会冻结写入、复制数据后翻转主库。
启动时校验日志主库与运行配置一致，定期清理按各库保留天数删除过期记录。

internal/apps/admin/system_config/errs.go

@@ -11,5 +11,6 @@ const (
 	ConfigKeyRequired                    = "配置键不能为空"
 	ConfigValueRequired                  = "配置值不能为空"
 	ConfigKeyExists                      = "配置键已存在"
+	protectedConfigKeyMessage            = "该配置项由系统任务管理，禁止手动修改"
 	StorageDriverSwitchRequiresMigration = "存在存量文件，请通过存储迁移任务切换存储引擎"
 )

internal/apps/admin/system_config/logics.go

@@ -17,7 +17,14 @@ import (
 	"gorm.io/gorm"
 )
 
+func isProtectedConfigKey(key string) bool {
+	return key == model.ConfigKeyLogDatabase || key == model.ConfigKeyLogDBMigration
+}
+
 func createSystemConfig(ctx context.Context, req CreateSystemConfigRequest) error {
+	if isProtectedConfigKey(req.Key) {
+		return errors.New(protectedConfigKeyMessage)
+	}
 	exists, err := repository.SystemConfigExists(ctx, req.Key)
 	if err != nil {
 		return err
@@ -53,6 +60,9 @@ func getSystemConfig(ctx context.Context, key string) (model.SystemConfig, error
 }
 
 func updateSystemConfig(ctx context.Context, key string, req UpdateSystemConfigRequest) error {
+	if isProtectedConfigKey(key) {
+		return errors.New(protectedConfigKeyMessage)
+	}
 	config, err := repository.GetAdminSystemConfigByKey(ctx, key)
 	if err != nil {
 		return err

internal/apps/admin/system_config/routers.go

@@ -64,6 +64,10 @@ func CreateSystemConfig(c *gin.Context) {
 		response.AbortBadRequest(c, err.Error())
 		return
 	}
+	if isProtectedConfigKey(req.Key) {
+		response.AbortBadRequest(c, protectedConfigKeyMessage)
+		return
+	}
 
 	if err := createSystemConfig(c.Request.Context(), req); err != nil {
 		if err.Error() == ConfigKeyExists {
@@ -156,6 +160,10 @@ func UpdateSystemConfig(c *gin.Context) {
 	}
 
 	key := c.Param("key")
+	if isProtectedConfigKey(key) {
+		response.AbortBadRequest(c, protectedConfigKeyMessage)
+		return
+	}
 	if err := updateSystemConfig(c.Request.Context(), key, req); err != nil {
 		if errors.Is(err, gorm.ErrRecordNotFound) {
 			response.AbortNotFound(c, SystemConfigNotFound)

internal/apps/admin/system_config/routers_test.go

@@ -27,7 +27,7 @@ import (
 	"github.com/Rain-kl/Wavelet/internal/shared/response"
 )
 
-const expectedDefaultConfigsCount = 30
+const expectedDefaultConfigsCount = 35
 
 func setupTestRouter(authUser *model.User) *gin.Engine {
 	r := testhelper.NewTestGinEngine()
@@ -168,8 +168,15 @@ func TestListSystemConfigs(t *testing.T) {
 		var configs []model.SystemConfig
 		_ = json.Unmarshal(dataBytes, &configs)
 
-		if len(configs) != 1 || configs[0].Key != model.ConfigKeyMaxAPIKeysPerUser {
-			t.Errorf("expected 1 business config (max_api_keys_per_user), got %d: %v", len(configs), configs)
+		if len(configs) != 4 {
+			t.Errorf("expected 4 business configs, got %d: %v", len(configs), configs)
+		}
+		keys := make(map[string]struct{}, len(configs))
+		for _, cfg := range configs {
+			keys[cfg.Key] = struct{}{}
+		}
+		if _, ok := keys[model.ConfigKeyMaxAPIKeysPerUser]; !ok {
+			t.Errorf("missing business config %s", model.ConfigKeyMaxAPIKeysPerUser)
 		}
 	})
 }