Tested af4cb6394dfa1f4b20ed12e4ba479eee4fdc84fe against base 4ee6bfd50ef4a089440d5c3662db2298da9cc50e on Windows.

No reproducible in-scope defect found.

- All 280 focused tests passed across the 8 snapshot-related test files.
- Changed-file formatting and lint passed using the repository's Vite+ 1.0.0.
- Desktop, server, and contracts typechecks passed.
- 8 native Windows Electron DOM checks passed, including document/nested scrolling, duplicate selectors, clipping, long text, visible-control priority, and empty pages. This fixture used the available Electron 44.1.0, not the PR's 44.4.2.
- 7 supplemental checks passed in the Mac-hosted Browser panel on Electron 44.4.2.

Windows end-to-end acceptance remains incomplete. Dependency installation failed on the unchanged uniwind patch; the full desktop launch consequently stopped at missing cross-env. The Windows computer-use bridge was also unavailable. A standalone capturePage experiment hit UnknownVizError, so I am not claiming Windows screenshot or actual-app saveText acceptance. The passing service tests cover export, Unicode boundaries, navigation and cancellation cleanup.

This is a validation comment, not an unqualified approval.

Model/harness: GPT-6-astra via Codex.