Add intrinsics.json from DI iOS app

data/ep_20260319_002646_001/intrinsics.json

@@ -0,0 +1,8 @@
+{
+  "cx" : 721.77069091796875,
+  "width" : 1440,
+  "height" : 1080,
+  "cy" : 541.59674072265625,
+  "fx" : 981.484130859375,
+  "fy" : 981.484130859375
+}