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-# Codex Migration Guide
-
-## Purpose
-
-This repository was converted from a Claude-oriented Harness template into a Codex-oriented template.
-
-## Mapping
-
-| Claude surface | Codex surface | Repository path |
-|---|---|---|
-| `CLAUDE.md` | persistent repo instructions | `AGENTS.md` |
-| `.claude/commands/*.md` | repo skills | `.agents/skills/*/SKILL.md` |
-| Claude sub-agents | project-scoped custom agents | `.codex/agents/*.toml` |
-| `.claude/settings.json` hooks | Codex hooks | `.codex/hooks.json` |
-| `claude -p` automation | `codex exec` automation | `scripts/execute.py` |
-| ad hoc slash commands | optional plugin command layer | `plugins/harness-engineering/commands/` |
-
-## Repository surfaces
-
-### `AGENTS.md`
-
-Codex loads `AGENTS.md` as the persistent instruction file for the repository.
-
-Use it for:
-
-- project-level rules
-- architecture constraints
-- workflow expectations
-- validation commands
-
-### `.agents/skills/`
-
-Repo skills are the primary reusable workflow layer.
-
-- `harness-workflow`: plan phases and generate `phases/` files
-- `harness-review`: review changes against Harness docs and rules
-
-These are automatically discoverable by Codex in this repository.
-
-### `.codex/agents/`
-
-Custom agents are defined as standalone TOML files.
-
-- `phase_planner`: read-heavy planner for decomposing work into steps
-- `harness_reviewer`: read-only reviewer for architecture and test compliance
-
-Use these only when the user explicitly asks Codex to fan out work across subagents.
-
-### `.codex/hooks.json`
-
-As of 2026-04-15, Codex documents hooks as experimental and disabled on native Windows.
-
-This repo still ships hook definitions because they work on macOS, Linux, and WSL once `codex_hooks` is enabled. On native Windows, use `python scripts/validate_workspace.py` manually or through `scripts/execute.py`.
-
-### `plugins/harness-engineering/`
-
-This is an optional repo-local plugin that exposes Harness slash-command prompts through the local marketplace.
-
-Install path:
-
-1. Restart Codex.
-2. Open `/plugins`.
-3. Choose the local marketplace `Local Harness Engineering`.
-4. Install `harness-engineering`.
-
-## Automation
-
-`scripts/execute.py` now calls `codex exec` instead of `claude -p`.
-
-Execution model:
-
-- inject `AGENTS.md` and `docs/*.md` into each step prompt
-- run steps in order
-- retry failed steps up to 3 times with prior error feedback
-- persist step outputs under `phases/{phase}/stepN-output.json`
-- create code and metadata commits after successful steps
-
-## Validation
-
-`python scripts/validate_workspace.py` is the repo-level fallback validator.
-
-- If `package.json` exists, it auto-runs available `npm run lint`, `npm run build`, and `npm run test`.
-- If the project needs another validation chain, set `HARNESS_VALIDATION_COMMANDS` to newline-separated commands.