Update chao annotations

tip_annotations/chao.json

@@ -1059,5 +1059,18 @@
     "full_x": 2026.2,
     "full_y": 1126.5,
     "timestamp": "2026-04-04T02:31:31.217382"
+  },
+  "GX010018_frame_000081": {
+    "tip_x": 1055.9,
+    "tip_y": 604.1,
+    "crop_x1": 954,
+    "crop_y1": 471,
+    "crop_w": 1330,
+    "crop_h": 862,
+    "img_w": 3840,
+    "img_h": 2160,
+    "full_x": 2009.9,
+    "full_y": 1075.1,
+    "timestamp": "2026-04-04T02:31:34.761828"
   }
 }