feat: add "Star on GitHub" link to the main intro link row

Adds a third link next to About and Propose New Anchor, pointing to the
GitHub repository, with a star icon. Bilingual (EN/DE).

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

Author: raifdmueller

website/src/components/main-content.js

@@ -95,6 +95,19 @@ export function renderMain() {
               ${i18n.t('main.proposeAnchor')}
             </a>
             <span class="text-gray-300 dark:text-gray-600">|</span>
+            <a
+              href="https://github.com/LLM-Coding/Semantic-Anchors"
+              target="_blank"
+              rel="noopener noreferrer"
+              class="inline-flex items-center gap-1 text-blue-600 dark:text-blue-400 hover:underline"
+              data-i18n="main.starGithub"
+            >
+              <svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">
+                <path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M11.049 2.927c.3-.921 1.603-.921 1.902 0l1.519 4.674a1 1 0 00.95.69h4.915c.969 0 1.371 1.24.588 1.81l-3.976 2.888a1 1 0 00-.363 1.118l1.518 4.674c.3.922-.755 1.688-1.538 1.118l-3.976-2.888a1 1 0 00-1.176 0l-3.976 2.888c-.783.57-1.838-.197-1.538-1.118l1.518-4.674a1 1 0 00-.363-1.118l-3.976-2.888c-.784-.57-.38-1.81.588-1.81h4.914a1 1 0 00.951-.69l1.519-4.674z"></path>
+              </svg>
+              ${i18n.t('main.starGithub')}
+            </a>
+            <span class="text-gray-300 dark:text-gray-600">|</span>
             <a
               href="#filters"
               class="inline-flex items-center gap-1 text-blue-600 dark:text-blue-400 hover:underline ml-auto"

website/src/translations/de.json

@@ -70,6 +70,7 @@
   "hero.skipToCatalog": "Zum Katalog ↓",
   "main.aboutLink": "Über",
   "main.proposeAnchor": "Neuen Anker vorschlagen",
+  "main.starGithub": "Stern auf GitHub",
   "main.documentation": "Dokumentation",
   "search.placeholder": "Anchors durchsuchen...",
   "search.fullText": "(Volltext)",

website/src/translations/en.json

@@ -70,6 +70,7 @@
   "hero.skipToCatalog": "Skip to catalog ↓",
   "main.aboutLink": "About",
   "main.proposeAnchor": "Propose New Anchor",
+  "main.starGithub": "Star on GitHub",
   "main.documentation": "Documentation",
   "search.placeholder": "Search anchors...",
   "search.fullText": "(full-text)",