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

Functions

finalize_runner

Update a runner’s terminal status and completion timestamp.

status_from_execution_result

Map an execution result to AgentStatus.

try_reserve_runner

Try to reserve a runner for the given session.