Release v0.23.1

Summary

Adopts the released Generation bounded-source APIs without changing recovered facts, diagnostics, source ranges, or canonical generated output.

Changed

• Upgrade all four Generation dependencies to the verified 0.15.0 release. (Cratis/Screenplay.Generation#18)
• Migrate Marten document and Wolverine event-stream readers to shared authored enumeration, exact method signatures, and receiver binding. (Cratis/Screenplay.Generation#18)

Added

• Characterize generated-source exclusion, receiver boundaries, payload admission, saga filtering, and authored unresolved-write ordering. (Cratis/Screenplay.Generation#18)