Migrate

Overview

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

Autonomous migration planning and execution: analyzes a migration target, maps blast radius, decomposes into safe phases with compatibility layers, groups consumers into waves, then executes through build's refactor/feature mode with verification at each phase boundary.

Announce at start: "Running migrate on [migration target description]."

Skill type: Rigid -- follow exactly, no shortcuts.

Purpose: Bridge between prospector discovery ("you should modernize X") and build execution ("here is the plan, execute it"). Today that bridge is manual. /migrate makes it autonomous.

Two modes:

• Plan + Execute (default) -- produces a phased migration plan, then executes each phase through build
• Plan only -- produces the plan and saves it without executing