fix: use plugin-version parameter for proto plugin packaging (#234)

The PackageProtoPlugin target was incorrectly using the Morphir Version
property instead of a dedicated plugin version parameter. This caused the
tarball to be created with the wrong version number (0.3.0-rc.1 instead
of 0.1.0).

Changes:
- Add PluginVersion parameter to Build.ProtoPlugin.cs
- Update PackageProtoPlugin to use PluginVersion instead of Version
- Update workflow to pass --plugin-version instead of --version

🤖 Generated with Claude Code

Author: DamianReeves

.github/workflows/proto-plugin-release.yml

@@ -68,7 +68,7 @@ jobs:
         run: ./build.sh --target BuildProtoPlugin
 
       - name: Package Proto Plugin
-        run: ./build.sh --target PackageProtoPlugin --version ${{ env.PLUGIN_VERSION }}
+        run: ./build.sh --target PackageProtoPlugin --plugin-version ${{ env.PLUGIN_VERSION }}
 
       - name: Upload Plugin Artifact
         uses: actions/upload-artifact@v4

build/Build.ProtoPlugin.cs

@@ -16,6 +16,9 @@ partial class Build
     [Parameter("Output directory for proto plugin WASM")]
     readonly AbsolutePath ProtoPluginDir = RootDirectory / "artifacts" / "proto-plugin";
 
+    [Parameter("Version for the proto plugin release (e.g., 0.1.0)")]
+    readonly string PluginVersion;
+
     AbsolutePath ProtoPluginProjectDir => RootDirectory / "integrations" / "rust" / "morphir-wasm-proto-plugin";
 
     /// <summary>
@@ -116,9 +119,10 @@ partial class Build
         {
             Serilog.Log.Information("Packaging Proto WASM plugin...");
 
+            var pluginVer = PluginVersion ?? throw new Exception("PluginVersion parameter is required for PackageProtoPlugin target");
             var wasmFile = ProtoPluginDir / "morphir_plugin.wasm";
             var readmeFile = ProtoPluginProjectDir / "README.md";
-            var tarballName = $"morphir-proto-plugin-v{Version}.tar.gz";
+            var tarballName = $"morphir-proto-plugin-v{pluginVer}.tar.gz";
             var tarballPath = ProtoPluginDir / tarballName;
 
             // Create a staging directory for the tarball contents