feat: make manual-images list dynamic and resolve checkmark encoding issues

backend/sources/manual_labels.json

@@ -114,7 +114,7 @@
         "kodeBarang": "21002601",
         "namaBarang": "Prima Nasi Spicy Chick Sambal Geprek COPY",
         "banyak": "1 80X",
-        "jumlah": "6 PAC✓"
+        "jumlah": "6 PAC✓"
       }
     ]
   },
@@ -338,7 +338,7 @@
         "kodeBarang": "11048000",
         "namaBarang": "BEBEK PARTING-NEW(*)",
         "banyak": "2 BOX",
-        "jumlah": "30 PAC ✓"
+        "jumlah": "30 PAC ✓"
       }
     ]
   },