Add Claude and Codex skill marketplaces

[tal]

Adds Claude Code and Codex marketplace manifests for the bundled AXe skill.

Installing through a marketplace keeps the skill in sync as updates ship, so users do not need to update it manually after installation.

The manifests reference the existing case-sensitive Skills/CLI path directly without a compatibility symlink; systems requiring a conventional lowercase skills/ path are unsupported.

[sentry]

Bug: The relative paths for skills in plugin.json are incorrect, as they resolve from the manifest's directory while the Skills folder is at the repository root.
_{Severity: CRITICAL}

Suggested Fix

Update the relative paths in the plugin.json files to correctly point to the Skills directory from their location. For example, change ./Skills/CLI/ to ../Skills/CLI/ to navigate up one level from the .claude-plugin/ directory to the repository root.

Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent. Verify if this is a real issue. If it is, propose a fix; if not, explain why it's
not valid.

Location: .claude-plugin/plugin.json#L19

Potential issue: The plugin manifests, `.claude-plugin/plugin.json` and
`.codex-plugin/plugin.json`, specify relative paths for skills like `./Skills/CLI/`.
According to marketplace documentation, these paths are resolved relative to the
directory containing the manifest. This means the system will attempt to locate the
skills directory at paths like `.claude-plugin/Skills/CLI/`, which do not exist. The
actual `Skills` directory is at the repository root. This path mismatch will cause the
marketplace loaders to fail when trying to load the skills, preventing the plugin from
functioning.

Also affects:

• .codex-plugin/plugin.json:18~18

_{Did we get this right? 👍 / 👎 to inform future reviews.}

[tal]

this only affects windows and because this is a skill for interacting with simulators its inherantly running on macOS. I confirmed this works on my machine.

I also fed it into the agent just to be sure and it gave this feedback:

This feedback is not valid. It confuses the manifest directory with the plugin root.

  - .claude-plugin/marketplace.json:11 makes the repository root the Claude plugin root.
  - Claude resolves .claude-plugin/plugin.json:19 relative to that plugin root, as documented in its path behavior rules
    (https://code.claude.com/docs/en/plugins-reference#path-behavior-rules).

  - Codex likewise maps the marketplace’s ./ source to the marketplace root, then joins manifest paths against that plugin root—not .codex-plugin/. This is explicit in the Codex
    0.147.0 marketplace resolver (https://github.com/openai/codex/blob/rust-v0.147.0/codex-rs/core-plugins/src/marketplace.rs#L650-L692) and manifest resolver
    (https://github.com/openai/codex/blob/rust-v0.147.0/codex-rs/core-plugins/src/manifest.rs#L597-L648).

  Therefore the resolved paths are:

  - Claude: <repo>/Skills/CLI/
  - Codex: <repo>/Skills/CLI/axe

  I also ran Claude Code 2.1.233’s strict validator against the repository; it passed. Previous live [Codex ](https://github.com/openai/codex/blob/rust-v0.147.0/codex-rs/core-plugins/src/marketplace.rs#L650-L692)add/list/install/remove testing also succeeded.

  No fix is needed. Changing these to ../Skills/... would be incorrect and rejected because plugin component paths cannot escape the plugin root.

[coderabbitai]

Walkthrough

Adds Claude Code and Codex plugin manifests, marketplace registrations, skill entrypoints, interface configuration, and default prompts for AXe. Updates the README with installation commands and the case-sensitive Skills/CLI path requirement. Adds an [Unreleased] changelog entry documenting the new marketplace integrations.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarises the main change: adding Claude and Codex marketplaces for the AXe skill.
Description check	✅ Passed	The description matches the changeset and accurately describes the new marketplace manifests and path caveat.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.claude-plugin/plugin.json:
- Line 5: Update .claude-plugin/plugin.json to omit the version or derive it
from repository state, and update .codex-plugin/plugin.json to retain a strict
semver base while automatically appending a +codex.<cachebuster> suffix whenever
Skills/CLI/axe/SKILL.md changes; ensure the release workflow applies these
cache-busting versions and requires marketplace reinstallation for consumers.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 3f0c2a56-8cab-4e7d-85a9-da2510bdfd21

📥 Commits

Reviewing files that changed from the base of the PR and between 30f4bfa and 408271a.

📒 Files selected for processing (6)

• .agents/plugins/marketplace.json
• .claude-plugin/marketplace.json
• .claude-plugin/plugin.json
• .codex-plugin/plugin.json
• CHANGELOG.md
• README.md

[tal]

👋 hi @cameroncooke, was curious if you had a chance to look at this