Update chao annotations

chao.json

@@ -7505,5 +7505,18 @@
     "full_x": 155,
     "full_y": 248.5,
     "timestamp": "2026-04-12T20:06:46.223229"
+  },
+  "annotated_frame_fancap_70": {
+    "tip_x": 2,
+    "tip_y": 28.5,
+    "crop_x1": 255,
+    "crop_y1": 218,
+    "crop_w": 28,
+    "crop_h": 45,
+    "img_w": 640,
+    "img_h": 480,
+    "full_x": 257,
+    "full_y": 246.5,
+    "timestamp": "2026-04-12T20:06:48.448539"
   }
 }