MarkText

## ⚠️ Note for macOS users
Builds are unsigned (no Apple Developer ID). After dragging MarkText into Applications, clear the quarantine flag once:
```
xattr -cr /Applications/marktext.app
```

## Verifying downloads
All artifacts are listed with their SHA-256 in `SHA256SUMS.txt`. Verify with:
```
sha256sum -c SHA256SUMS.txt --ignore-missing
```


## What's Changed
* chore(release): v0.19.0 release branch (DO NOT MERGE until stable) by @Jocs in https://github.com/marktext/marktext/pull/4269
* chore: bump develop to 0.20.0-dev by @Jocs in https://github.com/marktext/marktext/pull/4296
* docs(release): update Step 7 asset list to 24 by @Jocs in https://github.com/marktext/marktext/pull/4298
* docs(end-user): align user docs with 0.19 prefs and platform matrix by @Jocs in https://github.com/marktext/marktext/pull/4300
* docs(dev): sync developer docs with current codebase by @Jocs in https://github.com/marktext/marktext/pull/4299
* chore: convert repo to pnpm monorepo (packages/desktop, muyajs, website) by @Jocs in https://github.com/marktext/marktext/pull/4302
* refactor(website): migrate to Next.js 15 + Cloudflare Workers CI by @Jocs in https://github.com/marktext