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

apps/admin/src/lib/media/s3-storage.ts

@@ -4,7 +4,10 @@ import { buildMediaStorageKey } from "@/lib/media/storage-key"
 
 type StoreS3UploadParams = {
   file: File
-  mediaType: string
+  tenantId: string
+  assetId: string
+  fileRole: string
+  variant: string
 }
 
 type StoredUpload = {
@@ -62,7 +65,13 @@ function createS3Client(config: S3Config): S3Client {
 export async function storeUploadToS3(params: StoreS3UploadParams): Promise<StoredUpload> {
   const config = resolveS3Config()
   const client = createS3Client(config)
-  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 payload = new Uint8Array(await params.file.arrayBuffer())
 
   await client.send(