Inline test runtime: executes graph transitions in the calling process using the same loop, algorithm, validation, reducer, and checkpoint-building code as backend execution vehicles.

The inline runtime is not a second interpreter - only the driver differs. Use it for graph semantics, checkpoint ordering, reducers, guards, interrupts, and failure policy. Backend tests cover durable lifecycle, crash recovery, claims, scheduling, and supervised task execution.

Options

All helpers accept:

• :executor - Docket.Executor module (default Docket.Executor.Local)
• :executor_opts - keyword list passed through to the executor
• :context - application context passed to nodes and test sinks
• :clock, :id_generator, :sleeper - determinism injection points; the sleeper serves each committed retry park's wait, and the helpers then treat the parked deadline as reached without re-reading the clock
• :max_supersteps - runtime default when the graph declares no policy
• :max_steps - stop driving after this many committed supersteps
• :run_id - explicit run ID for the fresh run document
• :metadata - application metadata map for the fresh run document

Checkpoints are returned in order so ordinary semantic tests can assert a complete transition sequence without Process.sleep/1.

Return shape for all helpers:

{:ok, Docket.Run.t(), [Docket.Checkpoint.t()]}
| {:error, Docket.Error.t(), [Docket.Checkpoint.t()]}