Update chao annotations

tip_annotations/chao.json

@@ -1396,5 +1396,18 @@
     "full_x": 285.5,
     "full_y": 212.5,
     "timestamp": "2026-04-04T02:33:02.047767"
+  },
+  "annotated_frame_740": {
+    "tip_x": 24,
+    "tip_y": 20.5,
+    "crop_x1": 321,
+    "crop_y1": 264,
+    "crop_w": 68,
+    "crop_h": 85,
+    "img_w": 640,
+    "img_h": 480,
+    "full_x": 345,
+    "full_y": 284.5,
+    "timestamp": "2026-04-04T02:33:05.208559"
   }
 }