refactor(media): use asset-centric storage key layout

apps/admin/src/lib/media/local-storage.ts

@@ -5,7 +5,10 @@ import { buildMediaStorageKey } from "@/lib/media/storage-key"
 
 type StoreLocalUploadParams = {
   file: File
-  mediaType: string
+  tenantId: string
+  assetId: string
+  fileRole: string
+  variant: string
 }
 
 type StoredUpload = {
@@ -23,7 +26,13 @@ function resolveBaseDirectory(): string {
 }
 
 export async function storeUploadLocally(params: StoreLocalUploadParams): Promise<StoredUpload> {
-  const storageKey = buildMediaStorageKey(params.mediaType, params.file.name)
+  const storageKey = buildMediaStorageKey({
+    tenantId: params.tenantId,
+    assetId: params.assetId,
+    fileRole: params.fileRole,
+    variant: params.variant,
+    fileName: params.file.name,
+  })
   const baseDirectory = resolveBaseDirectory()
   const outputPath = path.join(baseDirectory, storageKey)