Add Dev Proxy icon to navigation bar

[Copilot]

Adds the official Dev Proxy icon from the dotnet/dev-proxy media directory to the site navigation.

Changes

• Added public/icon.svg - official icon from upstream repository
• Modified src/layouts/Layout.astro - brand link now displays icon alongside text using flexbox layout with gap-2 spacing and w-6 h-6 sizing

<a href={`${import.meta.env.BASE_URL}`} class="flex items-center gap-2 text-xl font-bold hover:text-purple-400 transition-colors">
  <img src={`${import.meta.env.BASE_URL}icon.svg`} alt="Dev Proxy" class="w-6 h-6" />
  Dev Proxy
</a>

Screenshots

Desktop

Mobile

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/dotnet/dev-proxy/contents/media
  • Triggering command: /usr/bin/curl curl -s REDACTED (http block)
• telemetry.astro.build
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node node /home/REDACTED/.npm/_npx/aa98e6899c6baff3/node_modules/.bin/astro dev --host 0.0.0.0 (dns block)
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node node /home/REDACTED/.npm/_npx/aa98e6899c6baff3/node_modules/.bin/astro build (dns block)
  • Triggering command: /home/REDACTED/work/_temp/ghcca-node/node/bin/node node /home/REDACTED/work/dev-proxy-tools.github.io/dev-proxy-tools.github.io/node_modules/.bin/astro build s.github.io/dev-proxy-tools.github.io (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Add icon to nav bar</issue_title>
<issue_description></issue_description>

<agent_instructions>Get icon from https://github.com/dotnet/dev-proxy/tree/main/media</agent_instructions>

Comments on the Issue (you are @copilot in this section)

• Fixes Add icon to nav bar #8

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