feat(blueprints): launch 3 system blueprints, 12 topology layers & in-article mounting

src/layouts/BaseLayout.astro

@@ -62,8 +62,8 @@ const switchLabel = isZh ? 'EN' : '中文';
 
 // Locale-aware nav labels
 const nav = isZh
-  ? { caseStudies: '工程案例', posts: '全部文章', about: '关于与合作' }
-  : { caseStudies: 'Case Studies', posts: 'All Posts', about: 'Work With Me' };
+  ? { blueprints: '系统蓝图', caseStudies: '工程案例', posts: '全部文章', about: '关于与合作' }
+  : { blueprints: 'Blueprints', caseStudies: 'Case Studies', posts: 'All Posts', about: 'Work With Me' };
 ---
 
 <!doctype html>
@@ -184,6 +184,7 @@ const nav = isZh
             whole group onto a second row (`flex-basis: 100%`) instead of letting
             individual links wrap around the search / language / theme controls. */}
         <ul class="nav-links">
+          <li><a class="nav-link" href={isZh ? '/zh/blueprints/' : '/blueprints/'}>{nav.blueprints}</a></li>
           <li><a class="nav-link" href={isZh ? '/zh/categories/case-studies/' : '/categories/case-studies/'}>{nav.caseStudies}</a></li>
           <li><a class="nav-link" href={isZh ? '/zh/posts/' : '/posts/'}>{nav.posts}</a></li>
           <li><a class="nav-link" href={isZh ? '/zh/about/' : '/about/'}>{nav.about}</a></li>