Building Atomic Transactions with Rollback for Signals

What Is an Atomic Transaction? Before we begin, let’s define atomic transaction clearly: “It is a protective wrapper around multiple state updates that guarantees the whole operation either succeeds completely or has no effect at all.” Inside an atomic transaction, you can perform multiple set() calls, and even cross multiple await boundaries. Only when the entire operation succeeds do we commit everything at once and rerun effects with a single flush . If anything fails halfway through, all tou