study Codex's TUI2

[vinhnx]

Description

https://github.com/openai/codex/blob/main/codex-rs/tui2/docs/tui_viewport_and_history.md

https://github.com/openai/codex/tree/main/codex-rs/tui2

Environment

• OS: [e.g. macOS 14.1, Ubuntu 22.04, Windows 11]
• VT Code version: [e.g. 0.31.0 or commit hash]
• Rust version: [e.g. rustc 1.75.0]

Additional Context

Add any other context about the issue or question here.