Merge pull request #4593 from StarryKira/fix/image-storage-env-unreachable

fix: 异步生图开关配了却不生效（环境变量被静默丢弃 + 迁移到后台开关）

backend/internal/service/wire.go

@@ -12,6 +12,7 @@ import (
 	"github.com/Wei-Shaw/sub2api/internal/pkg/logger"
 	"github.com/google/wire"
 	"github.com/redis/go-redis/v9"
+	"go.uber.org/zap"
 )
 
 // BuildInfo contains build information
@@ -521,20 +522,33 @@ func ProvideAPIKeyAuthCacheInvalidator(apiKeyService *APIKeyService) APIKeyAuthC
 	return apiKeyService
 }
 
+// ProvideImageStorageSettingService 构造异步生图对象存储的后台设置服务。
+//
+// config.yaml 里的 image_storage 作为回落：后台从未保存过设置时沿用它，
+// 使升级前已通过配置文件开启该功能的部署不被打断。
+func ProvideImageStorageSettingService(
+	settingRepo SettingRepository,
+	encryptor SecretEncryptor,
+	backup *BackupService,
+	factory ImageStorageFactory,
+	cfg *config.Config,
+) *ImageStorageSettingService {
+	if cfg.ImageStorage.Enabled && !cfg.ImageStorage.Active() {
+		// 列出具体缺失的键。若这些键其实已在环境变量里设过，说明它们没被读进来，
+		// 请确认 setDefaults 中已为其注册默认值（见 config.setEnvReachableDefaults）。
+		logger.L().Warn("image_storage.enabled is true in config but object storage is not fully configured; configure it in the admin UI or complete the config file",
+			zap.Strings("missing_keys", cfg.ImageStorage.MissingCredentialKeys()))
+	}
+	return NewImageStorageSettingService(settingRepo, encryptor, backup, factory, cfg.ImageStorage)
+}
+
 // ProvideImageTaskService 构造异步图片任务服务。
 //
-// 对象存储是异步图片任务的启用前提：仅当 image_storage 开关打开且凭证齐全时，
-// 服务才启用，并挂上把结果转存到对象存储的 uploader；否则功能整体禁用
+// 对象存储是异步图片任务的启用前提：仅当开关打开且凭证齐全时功能才可用，否则整体禁用
 // （handler 返回 404，不创建任务、不写 Redis），从而避免大 base64 结果撑爆 Redis。
-func ProvideImageTaskService(store ImageTaskStore, storage ImageStorage, cfg *config.Config) *ImageTaskService {
-	if !cfg.ImageStorage.Active() {
-		if cfg.ImageStorage.Enabled {
-			logger.L().Warn("image_storage.enabled is true but object storage is not fully configured; async image tasks are disabled")
-		}
-		return NewImageTaskService(store)
-	}
-	uploader := NewImageResultUploader(storage, cfg.ImageStorage.Prefix, cfg.ImageStorage.MaxDownloadByte, nil)
-	return NewImageTaskServiceWithUploader(store, uploader, defaultImageTaskTTL, defaultImageTaskExecutionTimeout)
+// 启用状态由 settings 服务在运行时解析，因此后台改开关后无需重启即可生效。
+func ProvideImageTaskService(store ImageTaskStore, settings *ImageStorageSettingService) *ImageTaskService {
+	return NewImageTaskServiceWithResolver(store, settings.Resolver(), defaultImageTaskTTL, defaultImageTaskExecutionTimeout)
 }
 
 // ProvideBackupService creates and starts BackupService
@@ -680,6 +694,7 @@ var ProviderSet = wire.NewSet(
 	NewAdminService,
 	NewGatewayService,
 	NewOpenAIGatewayService,
+	ProvideImageStorageSettingService,
 	ProvideImageTaskService,
 	ProvideBatchImageModelPricingResolver,
 	NewBatchImagePublicService,