ML data always included in backup-metadata; remove --no-ml

ML metadata (face detections, CLIP embeddings) is not a separate
category from the rest of the metadata. It is always fetched and
included. The only opt-in is --exif (or --all) which requires
downloading every file for EXIF extraction.

src/metadata-backup.ts

@@ -11,7 +11,6 @@ import type { EnteFile } from "./model/types.js";
 export type ProgressCallback = (message: string) => void;
 
 export interface MetadataBackupOptions {
-    mlData?: boolean;
     exif?: boolean;
     onProgress?: ProgressCallback;
 }
@@ -120,7 +119,6 @@ export const runMetadataBackup = async (
     opts?: MetadataBackupOptions,
 ): Promise<void> => {
     const log = opts?.onProgress ?? (() => {});
-    const wantML = opts?.mlData ?? true;
     const wantExif = opts?.exif ?? false;
 
     mkdirSync(outDir, { recursive: true });
@@ -176,17 +174,13 @@ export const runMetadataBackup = async (
         }
     }
 
-    // Fetch ML data in bulk if requested
-    let mlDataMap = new Map<number, Record<string, unknown>>();
-    if (wantML) {
-        log("Fetching ML data (face detections, CLIP embeddings)...");
-        mlDataMap = await fetchMLDataForFiles(
-            client,
-            [...fileKeys.keys()],
-            fileKeys,
-        );
-        log(`Got ML data for ${mlDataMap.size} file(s)`);
-    }
+    log("Fetching ML data (face detections, CLIP embeddings)...");
+    const mlDataMap = await fetchMLDataForFiles(
+        client,
+        [...fileKeys.keys()],
+        fileKeys,
+    );
+    log(`Got ML data for ${mlDataMap.size} file(s)`);
 
     // Write per-file JSON (with optional ML data and EXIF)
     const writtenFileIDs = new Set<number>();