feat: initial release of pengzhan.dev personal editorial blog platform

- Editorial web platform built with Node.js, Express, EJS, and Vanilla CSS
- Markdown content engine with YAML frontmatter, bilingual variants, and hot-reload watcher
- Unified SQLite with FTS5 search indexing, query logging, and schema filters
- Centered editorial post layout with margin-docked left TOC and mobile bottom sheet
- WordPress-grade comment system with moderation dashboard and bulk operations under /guanli
- Complete SEO suite (JSON-LD structured data, RSS/Atom feeds, XML sitemap, robots.txt)
- CI/CD workflows for linting, security audits (Gitleaks), automated tests, and Docker releases

views/layouts/base.ejs

@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title><%= typeof title !== 'undefined' ? `${title} - ${site.title}` : site.title %></title>
+  
+  <meta name="description" content="<%= (seo && seo.description) || site.tagline %>">
+  <link rel="canonical" href="<%= (seo && seo.canonicalUrl) || site.url %>">
+
+  <!-- Open Graph / Social Media -->
+  <meta property="og:site_name" content="<%= site.title %>">
+  <meta property="og:title" content="<%= (seo && seo.title) || site.title %>">
+  <meta property="og:description" content="<%= (seo && seo.description) || site.tagline %>">
+  <meta property="og:type" content="<%= (seo && seo.type) || 'website' %>">
+  <meta property="og:url" content="<%= (seo && seo.canonicalUrl) || site.url %>">
+  <% if (seo && seo.ogImage) { %>
+    <meta property="og:image" content="<%= seo.ogImage %>">
+  <% } %>
+
+  <!-- RSS Link -->
+  <link rel="alternate" type="application/rss+xml" title="<%= site.title %> RSS Feed" href="/feed">
+
+  <!-- Core Stylesheets -->
+  <link rel="stylesheet" href="/css/fonts.css">
+  <link rel="stylesheet" href="/css/base.css">
+  <link rel="stylesheet" href="/css/components.css">
+  <link rel="stylesheet" href="/css/prism-okaidia.css">
+
+  <!-- Custom CSS overrides from PV if provided -->
+  <link rel="stylesheet" href="/css/custom/custom.css" onerror="this.remove()">
+
+  <!-- Plugin head injection -->
+  <%- pluginHook('injectHead', { pageType: typeof pageType !== 'undefined' ? pageType : 'default' }) %>
+</head>
+<body>
+  <%- pluginHook('injectBodyStart', { pageType: typeof pageType !== 'undefined' ? pageType : 'default' }) %>
+
+  <%- include('../partials/header') %>
+
+  <main class="site-main">
+    <div class="container">
+      <%- body %>
+    </div>
+  </main>
+
+  <%- pluginHook('injectFooter', { pageType: typeof pageType !== 'undefined' ? pageType : 'default' }) %>
+
+  <%- include('../partials/footer') %>
+
+  <!-- Scripts -->
+  <script src="/js/toc.js" defer></script>
+  <script src="/js/search-ui.js" defer></script>
+</body>
+</html>