spec.md

ADDED Requirements

Requirement: Setup links Claude guidance to AGENTS when absent

gx setup and gx doctor SHALL create a root CLAUDE.md symlink to AGENTS.md when the target repository has no root CLAUDE.md.

Scenario: Fresh setup creates both guidance entrypoints

• WHEN gx setup --target <repo> runs in a repo with no root AGENTS.md or CLAUDE.md
• THEN AGENTS.md contains the Guardex managed guidance block
• AND CLAUDE.md is a symlink whose target is AGENTS.md.

Scenario: Existing Claude guidance is preserved

• GIVEN the target repo already has a root CLAUDE.md
• WHEN gx setup --target <repo> runs
• THEN Guardex SHALL leave the existing CLAUDE.md content and file type unchanged.