Update chao annotations

tip_annotations/chao.json

@@ -1422,5 +1422,18 @@
     "full_x": 576,
     "full_y": 209.5,
     "timestamp": "2026-04-04T02:33:15.881959"
+  },
+  "annotated_frame_763": {
+    "tip_x": 23,
+    "tip_y": 21.5,
+    "crop_x1": 487,
+    "crop_y1": 145,
+    "crop_w": 78,
+    "crop_h": 93,
+    "img_w": 640,
+    "img_h": 480,
+    "full_x": 510,
+    "full_y": 166.5,
+    "timestamp": "2026-04-04T02:33:19.348048"
   }
 }