feat(header): add 求职导航 nav button next to 项目推荐

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: yyyCode

vue/src/components/BlogHeader.vue

@@ -45,6 +45,16 @@
           项目推荐
         </router-link>
 
+        <a href="#" class="site-nav-link">
+          <span class="site-nav-ico" aria-hidden="true">
+            <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">
+              <path d="M20 7h-4V5a2 2 0 0 0-2-2h-4a2 2 0 0 0-2 2v2H4a2 2 0 0 0-2 2v11a2 2 0 0 0 2 2h16a2 2 0 0 0 2-2V9a2 2 0 0 0-2-2z" />
+              <path d="M9 7V5h6v2" />
+            </svg>
+          </span>
+          求职导航
+        </a>
+
         <router-link to="/feedback" class="site-nav-link" active-class="active">
           <span class="site-nav-ico" aria-hidden="true">
             <svg width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2">