Add Codex Skin Gallery

[ChannelerH]

What does this add or change?

Adds Codex Skin Gallery to the Galleries section as a public-safe Codex skin pack gallery with downloadable packs, copyable agent install prompts, restore guidance, and open-source pack releases.

Submission details

• Target surface: Skin.
• Supported platforms: macOS and Windows, depending on the downloaded pack/runtime used with Codex Dream Skin-compatible workflows.
• Project URL: https://codex-theme-gallery.howardhua.chatgpt.site/
• Install/import instructions: https://codex-theme-gallery.howardhua.chatgpt.site/install-codex-theme and https://github.com/ChannelerH/codex-skin-packs/releases/tag/v0.1.0
• Preview: https://codex-theme-gallery.howardhua.chatgpt.site/codex-skins
• License/source: https://github.com/ChannelerH/codex-skin-packs
• Differentiation: Focuses on verified, downloadable skin packs and agent-native install/apply prompts rather than only generated theme strings or concept previews.
• Safety/restore notes: Unofficial and not affiliated with OpenAI; users should review third-party packages before applying them; the gallery includes restore guidance and avoids private workspace screenshots.

Checks

• Confirmed the gallery homepage returns HTTP 200.
• Confirmed the install guide returns HTTP 200.
• Confirmed the GitHub release page returns HTTP 200.
• Ran npx --yes awesome-lint README.md; it currently fails with Awesome list must reside in a valid git repository in this local/fork context before reporting content-specific issues.
• Tried npx --yes lychee README.md CONTRIBUTING.md; npm installs a different lychee package that has no executable, so I manually checked the submitted links above.