MDA Compat Demo (Codex CLI)

This skill exists to verify Codex CLI SKILL.md compatibility from an MDA-compiled output.

Three things are true if Codex CLI discovers and loads this skill:

1. The compiled SKILL.md parses under Codex CLI's loader (built on agentskills.io v1).
2. The frontmatter name matches the package directory name (spec §06-2.1).
3. The agentskills.io v1 envelope subset (name, description, allowed-tools) survives the round-trip from .mda source to compiled output to runtime ingest.

Source: compat/codex-cli/source.mda. Compile: mda compile compat/codex-cli/source.mda --target SKILL.md --out-dir compat/codex-cli/build --integrity.

What this does NOT prove:

• That Codex CLI parses MDA-extended frontmatter under metadata.mda.* (the OpenAI docs do not document any such behavior, and we do not require it).
• That signatures or integrity digests are verified at load time (no current runtime does that).
• That non-standard top-level fields observed in some shipped Codex skills (for example triggers: arrays) are authored from MDA — they are not part of agentskills.io v1 and are out of MDA v1.0 scope.