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

server/routes/pages.js

@@ -0,0 +1,28 @@
+const express = require('express');
+const router = express.Router();
+const contentService = require('../services/content');
+
+router.get('/:slug', (req, res, next) => {
+  const pagePath = `/${req.params.slug}`;
+  const page = contentService.getPage(pagePath);
+  if (!page) {
+    return next(); // Fall through to 404
+  }
+
+  res.locals.seo = {
+    title: `${page.title} - ${res.locals.site.title}`,
+    description: page.frontmatter.description || res.locals.site.tagline,
+    canonicalUrl: `${res.locals.site.url}${pagePath}`,
+    ogImage: res.locals.seo.ogImage,
+    type: 'website'
+  };
+
+  const layout = page.layout === 'home' ? 'pages/home' : 'pages/page';
+
+  res.render(layout, {
+    title: page.title,
+    page
+  });
+});
+
+module.exports = router;