Repo-wide sweep with the pinned CSharpier 1.3.0 tool. Whitespace and
line-wrapping only; OpenNest.Engine.Tests (109) and OpenNest.IO.Tests
pass after reformat, full solution builds 0 errors.
Added .csharpierignore so csproj/config XML keeps its existing layout
(CSharpier's XML wrapping churns attributes with zero benefit).
Formatting is now enforceable: dotnet csharpier check . passes.
Also set ContinueOnError=true on Cincinnati's post-build copy to prevent
the running WinForms app from blocking test builds via a file lock.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>