Release v0.3.0

Added

• concepts.ParseDotNetGUID explicitly converts .NET 10.0.12 Guid.Parse input forms to RFC-order UUID values. It supports N/D/B/P/X notation and the pinned runtime's compatibility behaviour without widening ParseUUID, JSON/text decoding, SQL scanning or consumer admission policies. (#28)
• Pinned C# and typed-JavaScript dictionary-key fixtures, an opt-in reproducer and a compatibility reference covering embedded JSON property names, key equality, escaping and read/write/access differences. This evidence does not introduce a Go dictionary codec or shared serializer. (#18)

Changed

• Developer guides and installation references cover the v0.3.0 compatibility release while keeping historical fixture profiles and unsupported runtime/schema claims distinct. (#28)
• Repository-local quality gates select native Go build, vet and test phases for the root and recipes modules by default, rather than treating opt-in contract reproducers as a managed frontend application. (#29)