OpenAI has recently published a detailed architecture description of the Codex App Server, a bidirectional protocol that decouples the Codex coding agent's core logic from its various client surfaces.
A Pre-made Minecraft Server 1.21.1 that supports Java Edition and Bedrock Edition to play in one running server. Java(PC/Laptop) players can join Bedrock users playing at PC/Laptop, Mobile Device, ...
The site's layout is defined by the HTML in public/index.html. Opening that file, you'll notice the token %APP% which is where a page's converted HTML gets injected.