Update chao annotations

tip_annotations/chao.json

@@ -1508,5 +1508,18 @@
     "full_x": 588,
     "full_y": 243.5,
     "timestamp": "2026-04-04T02:33:43.467767"
+  },
+  "annotated_frame_841": {
+    "tip_x": 75.5,
+    "tip_y": 50.5,
+    "crop_x1": 513,
+    "crop_y1": 192,
+    "crop_w": 99,
+    "crop_h": 74,
+    "img_w": 640,
+    "img_h": 480,
+    "full_x": 588.5,
+    "full_y": 242.5,
+    "timestamp": "2026-04-04T02:33:46.519677"
   }
 }