# v1.1.0

**Released:** 2026-09-18

Changes since v1.0.1 (`5105c20`..`HEAD`).

## Features

- **LaTeX math rendering with KaTeX** (#164, design by @rafaself): inline `$…$` and block `$$…$$` math now render in the markdown preview. Fully self-hosted — KaTeX 0.16.47 and its fonts are vendored, so no CDN or network request is needed to render equations.
  - **Security-preserving pipeline:** the markdown extensions emit text-only placeholders (raw TeX as escaped text, no `style`) that pass DOMPurify untouched; KaTeX then renders them *after* sanitization with `trust: false`, so its style-heavy output never has to go through the sanitizer and the existing HTML-sanitization boundary is unchanged.
  - Conservative tokenizers keep prose literal: currency (`$10`, `$5 and $10`), inline code, fenced code, and escaped `\$` are not treated as math. Block equations participate in editor↔preview scroll-sync, and re-rendering is idempotent.

## Security

- **ruby_llm 1.16.0 → 2.0.0** — clears CVE-2026-67991 (High-severity polynomial-time ReDoS). The AI image-generation path was adapted to the 2.0 API (attachments via `ask(prompt, with:)`, responses as `Message#attachments`/`#content`); grammar-check behavior is unchanged.

## Test Coverage

- 864 Ruby tests, 1,646 JavaScript tests (2,510 total).