Release v4.49.0

Changed

• Stage now consumes Screenplay 4.105.0 and the matching canonical corpus release that includes executable observable collection query shapes for the screen-composition corpus. (part of #236)
• The Cratis renderer now admits and emits the screen corpus read-model query surface for no-argument observable collections and by-parameter observable collections, including AllWorkItems and CommentsForWorkItem, while preserving protected event-source route refusals. (part of #237)
• The screen corpus backend surface now preserves command literal mappings, partial projection update events and non-colliding scoped projection implementation names, and now generates executable query-only specifications for the corpus listing, comments and details scenarios. (part of #236) (part of #237)