Add lucide icons and TOC toggle

src/server.js

@@ -8,6 +8,7 @@ const { createRenderer, stripLeadingTitle } = require('./renderer');
 
 const PUBLIC_DIR = path.join(__dirname, '..', 'public');
 const BUILTIN_THEMES_DIR = path.join(PUBLIC_DIR, 'themes');
+const LUCIDE_DIST_DIR = path.join(__dirname, '..', 'node_modules', 'lucide', 'dist', 'umd');
 const PAGE_TEMPLATE_PATH = path.join(__dirname, '..', 'views', 'page.html');
 const PAGE_TEMPLATE = fs.readFileSync(PAGE_TEMPLATE_PATH, 'utf-8');
 
@@ -192,6 +193,7 @@ function createServer(opts) {
 
   // Serve webook public assets (CSS, JS)
   app.use('/_webook', express.static(PUBLIC_DIR));
+  app.use('/_vendor/lucide', express.static(LUCIDE_DIST_DIR));
 
   if (customTheme) {
     app.use(customTheme.mountPath, express.static(customTheme.dir));