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inspecting-hermes-desktop-dom

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Read the live Hermes desktop DOM/CSS over CDP.

optional-skills/software-development/inspecting-hermes-desktop-dom/SKILL.md

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# Inspecting the live Hermes desktop DOM

## Overview

When you are developing `apps/desktop` and the user is running that same app
(`hgui` / `pnpm run dev`), you can read the **live rendered DOM** of the window
they are looking at — computed styles, geometry, which CSS rule actually won,
console output — instead of inferring it from `.tsx` and being wrong.

Dev-server runs open a Chrome DevTools Protocol port on `127.0.0.1:9222`
automatically. The renderer is a Chromium page, so everything DevTools can read,
a script can read.

**This does not replace looking at it.** CDP answers *factual* questions ("what
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