Release v0.15.0

Summary

The Critter Stack generator now composes independent Vogen and Marten/Wolverine adapters through one neutral generation pipeline while preserving adapter provenance and existing facade compatibility.

Added

• Compose Vogen concepts by default only when exact authored Vogen evidence exists. (#25)
• Add external adapter-list composition with one shared resolver/lowerer/printer/verifier pipeline. (#25)
• Add a pinned Vogen 8.0.7 canonical fixture covering concepts, validation, nullable usage, loss diagnostics, and usage-driven identity. (#25)

Fixed

• Bind artifact type references to exact concept subjects without identity-by-name or Guid inference. (#25)
• Keep existing non-Vogen canonical outputs byte-stable. (#25)