Initial commit: skills library

- 70 skills with code and documentation
- Add .gitignore (ignore __pycache__, output/, temp/, venv/)
- Clean up test intermediates and caches

minimax-docx-dev/scripts/dotnet/MiniMaxAIDocx.Core/MiniMaxAIDocx.Core.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <NeutralLanguage>en</NeutralLanguage>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="DocumentFormat.OpenXml" Version="3.5.1" />
+    <PackageReference Include="System.CommandLine" Version="2.0.5" />
+  </ItemGroup>
+
+</Project>