v0.1.2

TestAtlas.Mcp is now a proper MCP-server package. It ships the McpServer NuGet package type and an embedded .mcp/server.json manifest, so it's discoverable in NuGet's MCP-server listing and Visual Studio's "Browse MCP servers" gallery — while remaining installable via dotnet tool install. The manifest version is auto-stamped from the package version so it can't drift.

CLI: index now accepts a folder (auto-discovers the single .sln/.csproj inside it) and returns actionable errors instead of a bare "input not found".

Docs: added a troubleshooting note for 401 Unauthorized installs behind corporate NuGet feeds.