Initial project scaffold for VS Vineyard mod

Sets up C# .NET 8 project with modinfo.json, ModSystem entry point,
full asset directory structure, .gitignore, and README.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

VSVineyard.csproj

@@ -0,0 +1,39 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <AssemblyName>VSVineyard</AssemblyName>
+    <RootNamespace>VSVineyard</RootNamespace>
+    <Version>0.1.0</Version>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <!-- Reference the Vintage Story API DLLs from the game installation directory.
+       Set the VINTAGE_STORY environment variable to your game install path.
+       Linux default: ~/.local/share/vintagestory
+       Windows default: C:\Users\<you>\AppData\Roaming\VintagestoryData -->
+  <ItemGroup>
+    <Reference Include="VintagestoryAPI">
+      <HintPath>$(VINTAGE_STORY)/VintagestoryAPI.dll</HintPath>
+      <Private>false</Private>
+    </Reference>
+    <Reference Include="VSSurvivalMod">
+      <HintPath>$(VINTAGE_STORY)/Mods/VSSurvivalMod.dll</HintPath>
+      <Private>false</Private>
+    </Reference>
+  </ItemGroup>
+
+  <!-- Copy assets into build output for Release packaging -->
+  <ItemGroup>
+    <None Include="resources/**" CopyToOutputDirectory="PreserveNewest" />
+  </ItemGroup>
+
+  <!-- On Release build, zip everything into a distributable mod file -->
+  <Target Name="PackMod" AfterTargets="Build" Condition="'$(Configuration)' == 'Release'">
+    <ItemGroup>
+      <ModFiles Include="$(OutputPath)/**" Exclude="$(OutputPath)/*.pdb;$(OutputPath)/**/*.pdb" />
+    </ItemGroup>
+    <MakeDir Directories="releases" />
+    <ZipDirectory SourceDirectory="$(OutputPath)" DestinationFile="releases/vsvineyard-$(Version).zip" Overwrite="true" />
+  </Target>
+</Project>