Update chao annotations

chao.json

@@ -7791,5 +7791,18 @@
     "full_x": 478,
     "full_y": 99.5,
     "timestamp": "2026-04-12T20:07:38.695203"
+  },
+  "annotated_frame_x39": {
+    "tip_x": 69,
+    "tip_y": 18.5,
+    "crop_x1": 335,
+    "crop_y1": 308,
+    "crop_w": 74,
+    "crop_h": 49,
+    "img_w": 640,
+    "img_h": 480,
+    "full_x": 404,
+    "full_y": 326.5,
+    "timestamp": "2026-04-12T20:07:44.645753"
   }
 }