OXYGEN Clay Migration

This entrypoint is self-contained for routing. File-capable clients can hydrate the deeper walkthrough shipped with the oxygen-gtm dependency at ../oxygen-gtm/recipes/clay-migration.md when they need the full field-by-field migration procedure.

The invariant is one visible Clay behavior → one native OXYGEN column or hosted Workflow step with typed inputs, dependencies, cell/run state, cost, and provenance. Keep raw imported columns, rebuild formulas deterministically, route reasoning to AI columns, provider calls to tool/waterfall columns, and multi-step orchestration to hosted Workflows.

Import and validate a small sample before paid execution. Show the live credit preview, exact row/column scope, and ceiling; require approval before running AI/provider columns. Do not leave the migrated workflow in a local script.