Keep original filename on upload, remove timestamp prefix

recounting_dashboard_upload.py

@@ -136,9 +136,7 @@ def api_upload():
         return jsonify({"success": False, "error": "Only .mp4 files allowed"}), 400
 
     Path(UPLOAD_DIR).mkdir(parents=True, exist_ok=True)
-    safe = secure_filename(f.filename)
+    dest_name = secure_filename(f.filename)
-    ts = datetime.now().strftime("%Y%m%d_%H%M%S_%f")
-    dest_name = f"{ts}_{safe}"
     dest_path = Path(UPLOAD_DIR) / dest_name
 
     f.save(str(dest_path))