Module runner_lifecycle 

Runner lifecycle helpers for background agent execution.

Provides shared implementations for:

• Runner reservation (check existing → create new with cancel token)
• Runner finalization (map execution result to AgentStatus)
• Status mapping

Structs

RunnerReservation

Reservation result from reserve_runner_core / try_reserve_runner.

Enums

ReserveOutcome

Outcome of the shared reservation core.

Functions

finalize_runner

Update a runner’s terminal status and completion timestamp.

reserve_runner_core

Shared runner-reservation core used by BOTH the server’s reserve_runner and the engine’s try_reserve_runner, so the idle-eviction sender re-assert can never drift between the two paths again (#346).

status_from_execution_result

Map an execution result to AgentStatus.

try_reserve_runner

Try to reserve a runner for the given session.