[kzu]

Generated stunt names only used simple type names, and array type arguments added nothing to the name. Different constructed types could therefore share one name: IList<int[]> and IList<string[]> (both IListOfStunt), IFoo<A.Bar> and IFoo<B.Bar>, or IFoo<Wrap<int>, string> and IFoo<Wrap<int, string>>. The generator deduplicated candidates by that name, so it generated only one of them, and the other call site failed at run time with a registry miss. Default-interface helper classes (DefaultIFooOfBar) had the same collision.

Changes

• Array arguments are named: ArrayOfInt32, Array2DOfString, ArrayOfArrayOfInt32, in both NamingConvention and the run-time StuntNaming.
• Deduplication uses run-time identity: NamingConvention.GetIdentity ignores type order, nullable annotations and tuple element names. So IFoo<(int a, int b)> and IFoo<(int, int)> still share one stunt.
• Colliding names get a stable hash: when different types share a namespace-qualified name, all of them use GetUniqueName / GetUniqueDefaultImplementationName, which append an FNV-1a hash, for example IFooOfBarStunt_1a2b3c4d. Every colliding name gets the hash, so names don't depend on the order of the call sites. Names without a collision are unchanged.
• Default helper collisions are found upfront: default helpers are named while stunts are processed in parallel, so their collisions are computed before processing and carried in ProcessorContext.AmbiguousDefaultImplementations.
• One name per stunt: the stunt declaration, hint name and registration all use the name the generator chose.
• Missing test attribute: added the missing [Fact] to StuntNamingTests.GenericOfTwoGenericNames, which never ran before.

Tests

• StuntGeneratorTests.GeneratesConstructedTypesWithCollidingNames covers arrays (including rank 2), same-named arguments from different namespaces, ambiguous generic nesting, default members through the suffixed helpers, and tuple-name variants. It calls every factory and checks the returned stunt's type.
• StuntNamingTests.ArrayArgumentNames covers the run-time names.
• The full Stunts.UnitTests suite passes locally.

This pull request was created by CodeAlta, an AI coding agent.