feat: add icons to homepage header and navigation links

- Add blog icon to homepage welcome title
  - Newspaper/blog icon (48px, blue)
  - Centered with flex layout

- Add lightning icon to homepage subtitle
  - Lightning bolt icon (24px, gray)
  - Represents speed and modern tech

- Add home icon to navigation home link
  - House icon with clean design
  - Consistent styling with other nav elements

- Add login icon to navigation login link
  - Login/sign-in icon
  - Only shown when user is not logged in

- Use Heroicons SVG for consistency
- Responsive and accessible design
- Smooth hover transitions

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

templates/pages/home.html

@@ -1,11 +1,17 @@
 {{define "home"}}
 {{template "header" .}}
 <section class="max-w-5xl mx-auto px-4 py-20 text-center">
-    <h1 class="text-5xl font-extrabold text-gray-900 mb-4">
-        {{if .SiteHomeWelcome}}{{.SiteHomeWelcome}}{{else}}{{index .Tr "home_welcome"}}{{end}}
+    <h1 class="text-5xl font-extrabold text-gray-900 mb-4 flex items-center justify-center gap-3">
+        <svg class="w-12 h-12 text-blue-600" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 20H5a2 2 0 01-2-2V6a2 2 0 012-2h10a2 2 0 012 2v1m2 13a2 2 0 01-2-2V7m2 13a2 2 0 002-2V9a2 2 0 00-2-2h-2m-4-3H9M7 16h6M7 8h6v4H7V8z"/>
+        </svg>
+        <span>{{if .SiteHomeWelcome}}{{.SiteHomeWelcome}}{{else}}{{index .Tr "home_welcome"}}{{end}}</span>
     </h1>
-    <p class="text-xl text-gray-600 mb-8 max-w-2xl mx-auto">
-        {{if .SiteHomeSubtitle}}{{.SiteHomeSubtitle}}{{else}}{{index .Tr "home_subtitle"}}{{end}}
+    <p class="text-xl text-gray-600 mb-8 max-w-2xl mx-auto flex items-center justify-center gap-2">
+        <svg class="w-6 h-6 text-gray-500 flex-shrink-0" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+            <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 10V3L4 14h7v7l9-11h-7z"/>
+        </svg>
+        <span>{{if .SiteHomeSubtitle}}{{.SiteHomeSubtitle}}{{else}}{{index .Tr "home_subtitle"}}{{end}}</span>
     </p>
 </section>