fix(backups): показать отсутствие файлов и защитить удаление записей

packages/contracts/src/backups.ts

@@ -4,6 +4,8 @@ export const backupFrequencySchema = z.enum(["daily", "weekly", "monthly"])
 export const backupFormatSchema = z.enum(["rsc", "backup"])
 export const backupStorageProviderSchema = z.enum(["local", "s3"])
 export const backupObjectStorageSchema = z.enum(["local", "s3", "both"])
+export const backupLocalFileStatusSchema = z.enum(["available", "missing", "unknown", "not-stored"])
+export type BackupLocalFileStatus = z.infer<typeof backupLocalFileStatusSchema>
 
 export const backupScheduleSettingsDtoSchema = z.object({
   enabled: z.boolean(),
@@ -74,6 +76,7 @@ export const backupItemDtoSchema = z.object({
   storage: backupObjectStorageSchema,
   s3Key: z.string().nullable().optional(),
   uploadError: z.string().nullable().optional(),
+  localFileStatus: backupLocalFileStatusSchema.optional(),
 })
 
 export type BackupStorageSettingsDto = z.infer<typeof backupStorageSettingsDtoSchema>