Pixelcraftdev skill pixelcraftdev-retro-doom v1 as a ChatGPT / Codex plugin.
Install: ChatGPT / Codex -> Plugins -> New plugin -> upload this zip.
The skill itself is skills/pixelcraftdev-retro-doom/SKILL.md. Connector (MCP) setup: https://skillarchrive.com/skills/retro-doom
