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Version 4.0.0-beta.18

Minor Changes

• #1515 01e31fd Thanks @mikearnaldi! - Add transactional STM modules: TxDeferred, TxPriorityQueue, TxPubSub, TxReentrantLock, TxSubscriptionRef.

  Refactor transaction model: remove Effect.atomic/Effect.atomicWith, add Effect.withTxState. All Tx operations now return Effect<A, E, Transaction> requiring explicit Effect.transaction(...) at boundaries.

  Expose TxPubSub.acquireSubscriber/releaseSubscriber for composable transaction boundaries. Fix TxSubscriptionRef.changes race condition ensuring current value is delivered first.

  Remove TxRandom module.

Patch Changes

• #1518 0890aab Thanks @IMax153! - Fix Command.withGlobalFlags type inference when mixing GlobalFlag.action and GlobalFlag.setting.

  Setting service identifiers are now correctly removed from command requirements in mixed global flag arrays.

• #1520 725260b Thanks @IMax153! - Ensure that OpenAI JSON schemas for tool calls and structured outputs are properly transformed