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/post.js

@@ -0,0 +1,52 @@
+const express = require('express');
+const router = express.Router();
+const contentService = require('../services/content');
+const commentService = require('../services/comments');
+
+function renderPost(req, res, next, slug, lang) {
+  const post = contentService.getPost(slug, lang);
+  if (!post) {
+    return next(); // Fall through to standalone pages or 404
+  }
+
+  const { prev, next: nextPost } = contentService.getAdjacentPosts(slug);
+  const comments = commentService.getCommentsForPost(slug);
+
+  // Set SEO metadata for post
+  res.locals.seo = {
+    title: `${post.title} - ${res.locals.site.title}`,
+    description: post.excerpt || res.locals.site.tagline,
+    canonicalUrl: `${res.locals.site.url}/${post.slug}${post.lang !== 'en' && !post.isDefault ? `/${post.lang}` : ''}`,
+    ogImage: post.cover ? (post.cover.startsWith('http') ? post.cover : `${res.locals.site.url}${post.cover}`) : res.locals.seo.ogImage,
+    type: 'article',
+    publishedTime: post.date.toISOString(),
+    author: post.author
+  };
+
+  res.render('pages/post', {
+    title: post.title,
+    post,
+    currentLang: lang || post.lang,
+    comments,
+    commentStatus: req.query.comment_status,
+    prevPost: prev,
+    nextPost
+  });
+}
+
+// Route for bilingual variant: /<post-slug>/<lang> (e.g. /my-post/zh)
+router.get('/:slug/:lang([a-zA-Z]{2,5})', (req, res, next) => {
+  renderPost(req, res, next, req.params.slug, req.params.lang);
+});
+
+// Route for default language: /<post-slug>
+router.get('/:slug', (req, res, next) => {
+  // Exclude reserved top-level prefixes if any
+  const reserved = ['blogs', 'search', 'quick-links', 'feed', 'rss.xml', 'sitemap.xml', 'robots.txt', 'api', 'plugins', 'public', 'posts-assets', 'guanli', 'admin'];
+  if (reserved.includes(req.params.slug)) {
+    return next();
+  }
+  renderPost(req, res, next, req.params.slug, null);
+});
+
+module.exports = router;