codex

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Charlie Marsh fca51f6daf Render TUI composer tabs as single-column spaces (#33239 )

## Why

Tabs in composer text could render at a different width from the cursor and
wrapping calculations, causing misaligned cursors and unexpected line breaks.

## What changed

- Replace tabs with single-column spaces for wrapping and rendering while
  preserving the original editable text and byte ranges.
- Apply the same display representation to base text, styled elements, and
  highlighted ranges.

## Testing

Add coverage for cursor alignment, rendered output, and wrapping of text that
contains tabs.

GitOrigin-RevId: 06d8489621d2f8b0823c7a004079d152dd0cab66

2026-07-15 04:17:40 +00:00