Pipeline Replay

Overview

All subagent dispatches use disk-mediated dispatch. See shared/dispatch-convention.md for the full protocol.

Resume interrupted pipelines from their last successful phase boundary, or replay historical pipelines with mutated dispatch templates for A/B experimentation. Reads dispatch manifests, correlates with shadow git checkpoints, reconstructs orchestrator state from disk, and re-dispatches from the resume point.

Announce at start: "Using replay to [resume interrupted pipeline / replay pipeline with template mutations]."

Skill type: Orchestrator -- dispatches subagents via existing dispatch convention. Does NOT re-implement pipeline phases -- restores state and delegates to the original skill's phase logic.

Key insight: The dispatch convention was explicitly designed for this. Manifests, dispatch files, and checkpoints are all on disk. Replay is the orchestration layer that reads them and re-dispatches.

Invocation