Stop hand-syncing Claude Code and Codex configs

If you've spent any time in Claude Code or Codex, your config tree is probably substantial: ~/.claude/{settings.json, agents/, skills/, .mcp.json, CLAUDE.md} ~/.codex/{config.toml, AGENTS.md} plus ~/.agents/skills/ Two situations get painful fast. Switching tools. You curated skills, agents, MCP servers, and permissions in one. Now you want to try the other. Migrating by hand is slow and easy to get wrong, and the two hosts don't share shapes. Permissions are allow/deny/ask lists in Claude, but