Migrate SpanArr inline array from InvalidCSharp*.il to C##123736

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copilot/migrate-valid-csharp-types

Commits on Jan 29, 2026

Move migrated types out of InvalidCSharp namespace

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Commits on Feb 17, 2026

Move GenericValueType_Over, GenericByRefLike_Over, and interfaces back to IL

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Commits on Feb 20, 2026

Move helper types back to IL to fix build errors

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Move RefFields types back to IL - ref to ref struct and TypedReference not valid in C#

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Commits on Feb 21, 2026

Revert InvalidCSharp.il (ByRefLike) to original state

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