Remove emojis from card titles and fix invalid icon in docs index

[Copilot]

This PR removes redundant emoji prefixes from card titles in the documentation index page and fixes an invalid icon reference, improving the overall design consistency and accessibility.

Changes Made

Card Title Cleanup:

• Removed emoji prefixes from all 8 card titles in docs/src/content/docs/index.mdx
• Cards now display clean titles without redundant decorations since they already have appropriate icons

Icon Validation & Fix:

• Identified and replaced invalid lock icon with valid approve-check-circle icon for the Security Guide card
• Verified all other icons are valid Astro Starlight built-in icons from the Lucide icon set

Before vs After

Before:

<Card title="🚀 Quick Start" icon="rocket">
<Card title="📖 Learn Concepts" icon="open-book">
<Card title="🔒 Security Guide" icon="lock">  // Invalid icon

After:

<Card title="Quick Start" icon="rocket">
<Card title="Learn Concepts" icon="open-book">
<Card title="Security Guide" icon="approve-check-circle">  // Valid icon

Visual Impact

The cards now have a cleaner, more professional appearance without emoji clutter, while maintaining clear visual hierarchy through the existing icon system.

Validation

• ✅ All icons confirmed as valid Astro Starlight built-in icons
• ✅ Documentation builds successfully without errors
• ✅ Visual consistency improved across all card components
• ✅ Accessibility enhanced by removing redundant visual elements

This change makes the documentation more professional and accessible while maintaining the same functional behavior and visual hierarchy.

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:

• telemetry.astro.build
  • Triggering command: node /home/REDACTED/work/gh-aw/gh-aw/docs/node_modules/.bin/astro build (dns block)
  • Triggering command: node /home/REDACTED/work/gh-aw/gh-aw/docs/node_modules/.bin/astro dev (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)

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.