Every plugin engine re-derived the quadrant/edge-spacing work area by hand
(Gpt6Astra, Opus55 and Qwen each had a copy, as did the placement
validator). One definition on the stock removes that duplication and the
chance of an engine disagreeing with the validator's bounds.
Co-Authored-By: Codex <noreply@openai.com>
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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.