Eric Traut cb1eea3e98 Explain Mermaid rendering fallbacks in the TUI (#47572) ...

## Why

Mermaid diagrams that cannot be rendered currently fall back to source without
explaining why the preview is unavailable.

## What changed

Show a dimmed notice above the preserved source when a completed Mermaid block
uses unsupported syntax, exceeds renderer size limits, or does not fit the
terminal width. Wrap the notice to the available width and preserve indentation
inside lists and blockquotes. Leave unfinished fences and disabled Mermaid
rendering without notices.

## Testing

Add coverage for fallback reasons, dimmed styling, source preservation, nested
indentation, and suppression of notices for unfinished fences and disabled
rendering. Update the streaming resize snapshot to include the width notice.

GitOrigin-RevId: 6ac7914b398c855e7aed3775ee0de70fb4484b78

2026-09-23 15:15:58 +00:00

..

assets

Use shared, keymap-aware tips in the fullscreen composer (#46931)

2026-09-21 03:02:45 +00:00

src

Explain Mermaid rendering fallbacks in the TUI (#47572)

2026-09-23 15:15:58 +00:00

tests

Add GPT-6 Sol and Luna to the model catalog (#47332)

2026-09-22 18:17:39 +00:00

BUILD.bazel

Add an animated Codex logo to fresh conversations and onboarding (#46752)

2026-09-20 03:02:48 +00:00

Cargo.toml

Disable unused default dependency features (#47088)

2026-09-21 18:58:55 +00:00

styles.md

Standardize TUI menu description wording and punctuation (#47329)

2026-09-22 17:58:37 +00:00