Initial commit

CommIpc/IpcFrame.cs

@@ -0,0 +1,15 @@
+using System.Text.Json;
+
+namespace CommIpc;
+
+/// <summary>
+/// Single protocol unit sent over the pipe. This is intentionally generic.
+/// 
+/// Transport framing: 4-byte little-endian length prefix + UTF-8 JSON bytes.
+/// </summary>
+public sealed record IpcFrame(
+    string Kind,
+    string? CorrelationId = null,
+    JsonElement? Payload = null,
+    DateTimeOffset? Timestamp = null
+);