feat: Upgrade server with HyNB v2.4 modular architecture, minigames, admin GM web panel, companion summons, and car radio

Ananta.SDK/Serialization/UxWriter.cs

@@ -44,6 +44,15 @@ public sealed class UxWriter
         return this;
     }
 
+    // Gadget / native family: the count byte is consumed as-is by the client reader, so a
+    // zero-length list is a literal 0 (handoff 16D: empty dict = `01 00`).
+    public UxWriter Raw7(int value)
+    {
+        if (value < 0) throw new ArgumentOutOfRangeException(nameof(value));
+        WriteVarInt(value);
+        return this;
+    }
+
     public byte[] ToArray() => _ms.ToArray();
 
     private void WriteVarInt(int value)