Update chao annotations

tip_annotations/chao.json

@@ -1409,5 +1409,18 @@
     "full_x": 345,
     "full_y": 284.5,
     "timestamp": "2026-04-04T02:33:05.208559"
+  },
+  "annotated_frame_757": {
+    "tip_x": 37,
+    "tip_y": 17.5,
+    "crop_x1": 539,
+    "crop_y1": 192,
+    "crop_w": 64,
+    "crop_h": 88,
+    "img_w": 640,
+    "img_h": 480,
+    "full_x": 576,
+    "full_y": 209.5,
+    "timestamp": "2026-04-04T02:33:15.881959"
   }
 }