A stateless GenServer worker for the Poolex worker pool.

Workers do not own tile state across ticks. Each invocation receives a work request and returns the result. This design keeps workers stateless and the execution deterministic.

Usage

Workers are managed by the application supervisor, which starts a Poolex pool named :systolic_pool at application boot. The pool size defaults to System.schedulers_online().

You should not need to call this module directly; the ExSystolic.Backend.Partitioned module dispatches work to the pool when run with dispatch: :pool.

Timeout policy

The worker handle_call/3 callback delegates to a pure function and returns immediately on completion. However, callers using GenServer.call/2 against a worker should pass :infinity (or a generous explicit timeout) for two reasons:

1. Tile execution time is data-dependent (PE count, payload size). A small default like 5000 ms can cause spurious :timeout exits under load.
2. Pool checkout (separate from the call) is itself synchronous; the caller controls overall responsiveness via the checkout_timeout run option.

ExSystolic.Backend.Partitioned always passes :infinity.