chore: export processing functions

Co-Authored-By: Claude <noreply@anthropic.com>

src/lib/index.ts

@@ -1,5 +1,18 @@
 // Data
 export { PRESET_DEVICES, DEFAULT_DEVICE, groupDevicesByBrand } from './data/devices';
 
+// Processing
+export {
+	processImage,
+	processImageWithPreview,
+	processImageWithPipeline,
+	ensurePhotonReady,
+	getOutputFilename,
+	createZipArchive,
+	downloadFile,
+	downloadImage,
+	downloadAllAsZip
+} from './processing/pipeline';
+
 // Types
 export * from './types';