fix: use free Font Awesome icons for Forgejo and Headlamp (#6)

## Summary
- `fa-brands fa-forgejo` and `fa-brands fa-kubernetes` are Font Awesome
**Pro** icons; the site loads FA Free 6.7.2 from cdnjs, so both rendered
as empty squares.
- Substitute free equivalents: Forgejo → `fa-brands fa-git-alt`,
Headlamp → `fa-solid fa-dharmachakra` (the wheel motif behind the K8s
logo).

## Test plan
- [x] Verify both icons render on the deployed portal after merge.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: xnoto

makeitwork.cloud/index.html

@@ -724,7 +724,7 @@ <h1 class="site-title" itemprop="name">MAKE IT WORK</h1>
             href="https://forgejo.makeitwork.cloud/"
             title="Forgejo Self-hosted Git"
           >
-            <i class="fa-brands fa-forgejo resource-icon"></i>
+            <i class="fa-brands fa-git-alt resource-icon"></i>
             <div class="resource-content">
               <div class="resource-name">Forgejo</div>
               <div class="resource-cmd">git push origin</div>
@@ -765,7 +765,7 @@ <h1 class="site-title" itemprop="name">MAKE IT WORK</h1>
             href="https://headlamp.makeitwork.cloud/"
             title="Headlamp Kubernetes Dashboard"
           >
-            <i class="fa-brands fa-kubernetes resource-icon"></i>
+            <i class="fa-solid fa-dharmachakra resource-icon"></i>
             <div class="resource-content">
               <div class="resource-name">Headlamp</div>
               <div class="resource-cmd">kubectl get pods</div>