Add session_meta.json from DI iOS app

data/ep_20260319_010948_002/session_meta.json

@@ -0,0 +1,11 @@
+{
+  "task_name" : "Demo Task",
+  "trim" : {
+    "end_frame" : 176,
+    "start_frame" : 0
+  },
+  "notes" : "",
+  "intervals" : [
+
+  ]
+}