Update chao annotations

chao.json

@@ -7700,5 +7700,18 @@
     "full_x": 257,
     "full_y": 322.5,
     "timestamp": "2026-04-12T20:07:20.278858"
+  },
+  "annotated_frame_x239": {
+    "tip_x": 19.5,
+    "tip_y": 63.5,
+    "crop_x1": 186,
+    "crop_y1": 93,
+    "crop_w": 81,
+    "crop_h": 86,
+    "img_w": 640,
+    "img_h": 480,
+    "full_x": 205.5,
+    "full_y": 156.5,
+    "timestamp": "2026-04-12T20:07:22.649146"
   }
 }