0.0.15 (2026-02-07)

Fixes

feat: add activity journaling for crash-recovery replay safety

When a #[workflow] method calls a #[activity], the activity result is now
cached via DurableContext. On crash-recovery replay, the cached result is
returned instead of re-executing the activity body, preventing duplicate
side-effects.

Also unifies stateless and stateful entity codegen into a single path.
Persistence infrastructure (workflow engine, message storage, sharding,
durable builtins, activity journal wrapping) is now always generated
regardless of whether the entity has #[state]. State is orthogonal to
persistence — stateless entities get the same journaling and durable
workflow guarantees as stateful ones.

Key changes:

• DurableContext extended with journal check/write/serialize logic
• ActivityScope::buffer_write used for atomic journal+state commits
• generate_stateless_entity removed (~530 lines); unified into generate_entity
• All state_persisted guards removed from codegen — persistence always enabled
• Stateless entities now use the View pattern with Deref to entity struct