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/index.js

@@ -0,0 +1,120 @@
+const express = require('express');
+const path = require('path');
+const fs = require('fs');
+
+const { CONTENT_DIR, loadSiteConfig } = require('./config');
+const contentService = require('./services/content');
+const commentService = require('./services/comments');
+const pluginManager = require('./services/plugin-manager');
+const watcherService = require('./services/watcher');
+const seoMiddleware = require('./middleware/seo');
+const pageCache = require('./middleware/cache');
+const { notFoundHandler, serverErrorHandler } = require('./middleware/error-handler');
+
+// Route modules
+const homeRouter = require('./routes/home');
+const blogsRouter = require('./routes/blogs');
+const searchRouter = require('./routes/search');
+const feedRouter = require('./routes/feed');
+const sitemapRouter = require('./routes/sitemap');
+const commentsRouter = require('./routes/comments');
+const postRouter = require('./routes/post');
+const pagesRouter = require('./routes/pages');
+const adminRouter = require('./routes/admin');
+
+const app = express();
+const PORT = process.env.PORT || 3000;
+
+// View engine setup
+app.set('view engine', 'ejs');
+app.set('views', path.join(__dirname, '../views'));
+
+// Parse JSON & URL-encoded request bodies
+app.use(express.urlencoded({ extended: true }));
+app.use(express.json());
+
+// Load site configuration
+const siteConfig = loadSiteConfig();
+
+// Serve built-in skeleton static assets (CSS, JS, fonts)
+app.use(express.static(path.join(__dirname, '../public')));
+
+// Serve Persistent Volume static directories
+const pvStaticDir = path.join(CONTENT_DIR, 'static');
+if (fs.existsSync(pvStaticDir)) {
+  app.use(express.static(pvStaticDir));
+}
+
+// Serve PV custom CSS if present
+const pvCssDir = path.join(CONTENT_DIR, 'css');
+if (fs.existsSync(pvCssDir)) {
+  app.use('/css/custom', express.static(pvCssDir));
+}
+
+// Serve post assets (e.g. cover images) at /posts-assets/<slug>/...
+const pvPostsDir = path.join(CONTENT_DIR, 'posts');
+if (fs.existsSync(pvPostsDir)) {
+  app.use('/posts-assets', express.static(pvPostsDir));
+}
+
+// Initialize services
+commentService.init(CONTENT_DIR);
+pluginManager.loadPlugins(CONTENT_DIR, app, siteConfig);
+contentService.init(CONTENT_DIR);
+watcherService.start(CONTENT_DIR, app);
+
+// Inject SEO locals & plugin hook helper
+app.use(seoMiddleware(siteConfig));
+app.use((req, res, next) => {
+  res.locals.pluginHook = (hookName, extraContext = {}) => {
+    return pluginManager.renderHook(hookName, {
+      req,
+      res,
+      site: res.locals.site,
+      ...extraContext
+    });
+  };
+  next();
+});
+
+// Super Page Cache micro-caching
+app.use(pageCache.middleware());
+
+// Mount routes in order of specificity
+app.use('/', adminRouter);
+app.use('/', homeRouter);
+app.use('/', blogsRouter);
+app.use('/', searchRouter);
+app.use('/', feedRouter);
+app.use('/', sitemapRouter);
+app.use('/', commentsRouter);
+
+// Specific blog post routes (/:slug, /:slug/:lang)
+app.use('/', postRouter);
+
+// Fallback standalone pages (/:pageSlug from pages/)
+app.use('/', pagesRouter);
+
+// Error handlers
+app.use(notFoundHandler);
+app.use(serverErrorHandler);
+
+if (require.main === module) {
+  const server = app.listen(PORT, () => {
+    console.log(`=========================================`);
+    console.log(` Pengzhan.dev Web Server running at:`);
+    console.log(` http://localhost:${PORT}`);
+    console.log(` Content directory: ${CONTENT_DIR}`);
+    console.log(`=========================================`);
+  });
+
+  process.on('SIGTERM', () => {
+    console.log('SIGTERM signal received: closing HTTP server');
+    watcherService.close();
+    server.close(() => {
+      console.log('HTTP server closed');
+    });
+  });
+}
+
+module.exports = app;