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/services/comments.js

@@ -0,0 +1,49 @@
+const dbService = require('./db');
+
+class CommentService {
+  init(contentDir) {
+    dbService.init(contentDir);
+  }
+
+  getCommentsForPost(postSlug) {
+    return dbService.getApprovedCommentsForPost(postSlug);
+  }
+
+  addComment(params) {
+    return dbService.addComment(params);
+  }
+
+  getPendingComments() {
+    return dbService.getAllComments(0); // 0 = pending
+  }
+
+  getAllComments() {
+    return dbService.getAllComments();
+  }
+
+  approveComment(id) {
+    return dbService.updateCommentStatus(id, 1);
+  }
+
+  rejectComment(id) {
+    return dbService.updateCommentStatus(id, -1);
+  }
+
+  deleteComment(id) {
+    return dbService.deleteComment(id);
+  }
+
+  batchApproveComments(ids) {
+    return dbService.batchUpdateCommentStatus(ids, 1);
+  }
+
+  batchRejectComments(ids) {
+    return dbService.batchUpdateCommentStatus(ids, -1);
+  }
+
+  batchDeleteComments(ids) {
+    return dbService.batchDeleteComments(ids);
+  }
+}
+
+module.exports = new CommentService();