v0.0.6

Pre-release build. The Windows build is published to the VS Code Marketplace; the Linux and macOS VSIXs are attached here for manual install (code --install-extension <file>.vsix). The tsqldbg-mcp-* archives are the standalone self-contained MCP server -- unpack and run tsqldbg-mcp, no .NET install needed. Verify downloads against SHA256SUMS.txt.