Feature request: Support Markdown table rendering in Codex CLI

What variant of Codex are you using?

Codex CLI (open-source Rust implementation, TUI / codex-rs)

What feature would you like to see?

Support proper Markdown table rendering in Codex CLI. Currently, Markdown tables are not rendered as actual tables in the terminal UI and are shown as plain pipe-delimited text instead. It would be great if Codex CLI could parse and render GitHub-Flavored Markdown tables with readable column alignment.

Additional information

I checked the current implementation in the Codex CLI source. The markdown renderer in codex-rs/tui/src/ markdown_render.rs does not enable table parsing and does not implement rendering logic for table-related tags. Existing snapshot tests also show table input being displayed as raw Markdown text rather than a rendered table. Even a first version with basic table support, such as header rows, simple column alignment, and graceful fallback on narrow terminals, would already be very useful.