feat(app): implement Product Scan review flow, dynamic batch expiry picker, custom PDFs, PO relationships, and aligned card layouts

backend/pfm-web-app/src/utils/active-log.ts

@@ -13,6 +13,7 @@ export interface ActiveUploadLog {
   stage_1_output?: any;
   stage_2_output?: any;
   frontend_response?: any;
+  pipeline_info?: any;
 }
 
 // Store active logs in global context as a Map keyed by filename