feat(architecture): implement consultant review r4 (stream separation, nav upgrade, internal cta, schema & anchor fixes)

src/layouts/BaseLayout.astro

@@ -62,8 +62,8 @@ const switchLabel = isZh ? 'EN' : '中文';
 
 // Locale-aware nav labels
 const nav = isZh
-  ? { posts: '文章', categories: '分类', about: '关于与合作', rss: 'RSS' }
-  : { posts: 'Posts', categories: 'Categories', about: 'About & Hire', rss: 'RSS' };
+  ? { 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' };
 ---
 
 <!doctype html>
@@ -184,10 +184,9 @@ 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/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/categories/' : '/categories/'}>{nav.categories}</a></li>
           <li><a class="nav-link" href={isZh ? '/zh/about/' : '/about/'}>{nav.about}</a></li>
-          <li><a class="nav-link" href="/rss.xml" title={nav.rss}>{nav.rss}</a></li>
         </ul>
         <button class="search-toggle" id="search-toggle" aria-label={isZh ? '搜索' : 'Search'}>
           ⌕ <span class="search-hint">{isZh ? '搜索' : 'Search'}</span><kbd class="search-key">/</kbd>
@@ -204,6 +203,7 @@ const nav = isZh
     <footer class="site-footer">
       <span>© {new Date().getFullYear()} {SITE.author} · {SITE.handle}</span>
       <span>
+        <a href="/rss.xml">RSS</a>
         <a href={SITE.linkedin} target="_blank" rel="noopener">LinkedIn</a>
         <a href={SITE.github} target="_blank" rel="noopener">GitHub</a>
         <a href={SITE.gitea} target="_blank" rel="noopener">Gitea</a>