Improve generated version

Author: ejsmith

src/Foundatio.Mediator/Utility/Helpers.cs

@@ -6,8 +6,10 @@ internal static class Helpers
 {
     public static void AddGeneratedFileHeader(this IndentedStringBuilder source)
     {
+        var semanticVersion = GetSemanticVersion();
+
         source.AppendLine("// <auto-generated>");
-        source.AppendLine("// This file was generated by Foundatio.Mediator source generators.");
+        source.AppendLine($"// Generated by Foundatio.Mediator v{semanticVersion}");
         source.AppendLine("// Changes to this file may be lost when the code is regenerated.");
         source.AppendLine("// </auto-generated>");
         source.AppendLine();
@@ -18,12 +20,30 @@ public static void AddGeneratedFileHeader(this IndentedStringBuilder source)
     public static void AddGeneratedCodeAttribute(this IndentedStringBuilder source)
     {
         var toolName = "Foundatio.Mediator";
-        var toolVersion = GetToolVersion();
+        var toolVersion = GetFullVersion();
 
         source.AppendLine($"[global::System.CodeDom.Compiler.GeneratedCode(\"{toolName}\", \"{toolVersion}\")]");
     }
 
-    private static string GetToolVersion()
+    /// <summary>
+    /// Gets the semantic version (e.g., "1.0.0-rc.3.9") without the commit hash suffix.
+    /// </summary>
+    private static string GetSemanticVersion()
+    {
+        var fullVersion = GetFullVersion();
+
+        // Remove the +commitHash suffix if present
+        var plusIndex = fullVersion.IndexOf('+');
+        if (plusIndex > 0)
+            return fullVersion.Substring(0, plusIndex);
+
+        return fullVersion;
+    }
+
+    /// <summary>
+    /// Gets the full informational version including commit hash (e.g., "1.0.0-rc.3.9+abc123").
+    /// </summary>
+    private static string GetFullVersion()
     {
         var asm = typeof(Helpers).Assembly;