Module execution 

Process and filesystem execution boundaries for workflow runs.

ReplicateExecutor starts the current executable once per replicate and gives every worker a ReplicateContext containing its isolated scope and lazy seed deriver. ExecutionScope owns the directory lifecycle:

• creation mode (open_or_create, create_generated, create_named),
• path derivation for per-task recordings,
• and opening of previously used scopes.

Boundary

This module owns only process-level replicate isolation and filesystem scopes. It does not define task policies, phase scheduling, artifact identity rules, or payload serialization. The downstream caller owns those concerns and consumes the contexts and directories this module provides.

Structs

ExecutionScope

One created or reopened study-execution directory.

ReplicateContext

Immutable identity and output scope for one replicate worker process.

ReplicateExecutor

Controller that dispatches the current executable once per declared replicate.

Enums

ExecutionScopeError

Failure while validating or creating an execution-directory scope.

ReplicateExecutionError

Failure while dispatching or entering a replicate subprocess.