[Bug]: Stale ToolHive desktop UI screenshots

[danbarr]

Page or section

docs/toolhive/guides-ui/index.mdx, docs/toolhive/guides-ui/network-isolation.mdx, and potentially other pages under docs/toolhive/guides-ui/

What's wrong?

Several ToolHive desktop UI (Studio) screenshots are out of date:

1. refactor: toolhive-ui img after rebranding #563 refreshed most of the UI screenshots after the product rebranding, but it predates later UI changes, including the consolidation of secrets management under the Settings page. toolhive-ui-screenshot-{light,dark}.webp (used on guides-ui/index.mdx) still shows the old top nav bar with Secrets and Help as separate items, rather than the current layout.
2. Update stacklok/toolhive-studio to v0.38.0 #1037 (the automated v0.38.0 release sync) flagged that stacklok/toolhive-studio#2469 reworked the desktop app's network isolation UI, replacing the boolean toggle with a 3-way "Network access" radio (No isolation / Host networking (Advanced) / Isolate behind an HTTP proxy) plus a nested "Allowed destinations" radio. The gap was called out in that PR but never resolved, so network-isolation-{light,dark}.webp still show the old toggle-and-list UI.

Suggested fix

• static/img/toolhive/toolhive-ui-screenshot-{light,dark}.webp - retake with current top nav layout
• static/img/toolhive/network-isolation-{light,dark}.webp - capture the new "Network access" tab in "Isolate behind an HTTP proxy" + "Selected destinations" mode with the example values already in the prose (api.github.com, .githubusercontent.com, port 443)
• Audit remaining guides-ui/ screenshots (registry, playground, group management, secrets management) for the same stale top nav

Additional context

Install the latest ToolHive desktop app and retake affected screenshots in both light and dark themes.