Add comprehensive C# → WAT test suite and fix type mapping bugs in compiler pipeline#44

Draft

Copilot wants to merge 3 commits into

copilot/update-program-cs-testing

Commits on Feb 23, 2026

Initial plan
Copilot
committed
Add Testing/Program.cs with comprehensive C# to WAT compilation tests and fix MapSet/RuleSet bugs

Copilot
and
TristinPorter
committed
Add clarifying comments to MapSet.cs for type mapping changes

Copilot
and
TristinPorter
committed