version both programs at 2.0.0 (wire protocol v2)

Versioning scheme: MAJOR.MINOR.PATCH where MAJOR matches the wire
protocol version (no cross-major compat), MINOR is the main change
indicator, PATCH generally unused.

- gatunad: Cargo.toml version 2.0.0 (clap --version picks it up)
- gatuna: csproj Version 2.0.0, shown in form title + tray tooltip
- app.manifest: assemblyIdentity version 2.0.0.0
- Frame version rejection already in place (both sides reject != 2)
- README: document versioning scheme

README.md

@@ -181,6 +181,24 @@ gatuna/
     └── PingTest.cs          # PING/PONG network test with stats
 ```
 
+## Versioning
+
+Both programs use `MAJOR.MINOR.PATCH` where:
+
+- **MAJOR** matches the wire protocol version. A v2.x program rejects any frame
+  with `version != 2`. No cross-major compatibility.
+- **MINOR** is the main change indicator for features and fixes within a major
+  version.
+- **PATCH** is reserved for bug fixes; generally unused.
+
+Current version: **2.0.0** (wire protocol v2).
+
+Check versions:
+```sh
+gatunad --version          # Rust server
+```
+The Windows client shows its version in the title bar and tray tooltip.
+
 ## License
 
 CC0 1.0 Universal. See [`LICENSE`](LICENSE).

gatuna-win/MainForm.cs

@@ -17,7 +17,8 @@ public partial class MainForm : Form
 
     public MainForm()
     {
-        Text = "gatuna";
+        var ver = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version!;
+        Text = $"gatuna {ver.Major}.{ver.Minor}";
         Width = 520;
         Height = 420;
         FormBorderStyle = FormBorderStyle.FixedSingle;

gatuna-win/Program.cs

@@ -9,10 +9,12 @@ static class Program
 
         var form = new MainForm();
 
+        var ver = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version!;
+
         using var tray = new NotifyIcon
         {
             Icon = SystemIcons.GetStockIcon(StockIconId.NetworkConnect, 32),
-            Text = "gatuna",
+            Text = $"gatuna {ver.Major}.{ver.Minor}",
             Visible = true,
         };
 

gatuna-win/app.manifest

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
-  <assemblyIdentity version="0.1.0.0" name="gatuna" />
+  <assemblyIdentity version="2.0.0.0" name="gatuna" />
   <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
     <security>
       <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">

gatuna-win/gatuna.csproj

@@ -5,6 +5,7 @@
     <TargetFramework>net8.0-windows</TargetFramework>
     <AssemblyName>gatuna</AssemblyName>
     <RootNamespace>gatuna</RootNamespace>
+    <Version>2.0.0</Version>
     <Nullable>enable</Nullable>
     <UseWindowsForms>true</UseWindowsForms>
     <ImplicitUsings>enable</ImplicitUsings>

gatunad/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "gatuna"
-version = "0.1.0"
+version = "2.0.0"
 edition = "2021"
 license = "CC0-1.0"