Updating WebKit Safari Version

The Safari version string used in the WebKit user-agent is declared in one place:

packages/playwright-core/src/server/webkit/wkBrowser.ts — BROWSER_VERSION constant (line ~35).

const BROWSER_VERSION = '26.4';
const DEFAULT_USER_AGENT = `Mozilla/5.0 ... Version/${BROWSER_VERSION} Safari/605.1.15`;

Steps to update

Find the latest stable Safari version — search site:developer.apple.com "Safari X.Y Release Notes" or check the Safari Release Notes index. The highest numbered entry that is not a Technology Preview is the current stable release.
Update BROWSER_VERSION in wkBrowser.ts.
Run lint to update any generated files that embed the version:
```
npm run flint
```

Referenced from SKILL.md

SKILL.mdView in source ↗

15- [Vendor Dependencies & Bundling](vendor.md) — utilsBundle, coreBundle, babelBundle; adding vendored npm packages; DEPS.list; `check_deps`16- [Updating WebKit Safari Version](webkit-safari-version.md) — update the Safari version string in the WebKit user-agent17- [WebView (iOS Safari) Backend](webview.md) — `webkit/webview/` against stock Mobile Safari; provisional-target pause/resume; what's upstream vs Playwright patches; local + CI test setup