Update chao annotations

tip_annotations/chao.json

@@ -3157,5 +3157,18 @@
     "full_x": 377.5,
     "full_y": 72.5,
     "timestamp": "2026-04-04T19:44:35.413363"
+  },
+  "annotated_frame_cap428": {
+    "tip_x": 94,
+    "tip_y": 64.5,
+    "crop_x1": 368,
+    "crop_y1": 146,
+    "crop_w": 118,
+    "crop_h": 96,
+    "img_w": 640,
+    "img_h": 480,
+    "full_x": 462,
+    "full_y": 210.5,
+    "timestamp": "2026-04-04T19:44:38.469015"
   }
 }