Low-overhead Flow write admission gate.
This gate is intentionally tiny on the hot path: create commands do one atomic read. The operational guard owns the expensive RSS/disk checks and updates this projection periodically.
Summary
Functions
@spec clear_create_pause() :: :ok
@spec init() :: :ok
@spec overload_error(atom(), non_neg_integer()) :: {:error, binary()}
@spec pause_creates(atom(), non_neg_integer()) :: :ok
@spec reject_new_creates?() :: boolean()
@spec status() :: map()