- Delete deprecated ResultBox implementation from box_trait.rs - All code paths use boxes::result::NyashResultBox (aka boxes::ResultBox) - Tests remain green (179) - Mark phase 9.78h acceptance: ResultBox移行完了 as done
- Delete deprecated ResultBox implementation from box_trait.rs - All code paths use boxes::result::NyashResultBox (aka boxes::ResultBox) - Tests remain green (179) - Mark phase 9.78h acceptance: ResultBox移行完了 as done