Audiobooks: built-in library, playback and synced progress through the audiobook player (classic frame kept)

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

server.js

@@ -36,6 +36,7 @@ const backup = require('./backup');
 const push = require('./push');
 const mail = require('./mail');  // Outlook.com mail, through Microsoft Graph (MS_CLIENT_ID)
 const lyrics = require('./lyrics');  // lyrics for the music player, through Lyrica (LYRICS_API_URL)
+const abapi = require('./abapi');  // audiobook player library, audio and progress (AUDIOBOOKS_URL)
 const podcast = require('./podcast');  // Podgrab podcasts (PODCAST_URL, PODGRAB_PASSWORD)
 const signal = require('./signal');  // Signal messages, through signal-cli-rest-api (SIGNAL_API_URL)
 const vault = require('./vault')('nehub-plex');
@@ -532,7 +533,7 @@ const ACCESS = [
   [/^\/sf\//, ['files', 'office']],
   [/^\/api\/oo\/config$/, ['office', 'files']],
   [/^\/(api\/plex\/|plex\/)/, ['music', 'video']],
-  [/^\/api\/audiobooks\//, ['audio']],
+  [/^\/api\/(audiobooks|ab)\//, ['audio']],
   [/^\/api\/podcast\//, ['podcast']],
   [/^\/api\/signal\//, ['signal']],
   [/^\/api\/lyrics$/, ['music']],
@@ -610,6 +611,7 @@ async function handleRequest(req, res) {
       res.writeHead(302, { location: to || AUDIOBOOKS_URL, 'cache-control': 'no-store', 'referrer-policy': 'no-referrer' }); return res.end();
     }
     if (pathname === '/api/lyrics') return lyrics.enabled() ? lyrics.handle(req, res) : forbidden(res, 'Lyrics are not set up on this server');
+    if (pathname.startsWith('/api/ab/')) return abapi.handle(req, res);
     if (pathname.startsWith('/api/podcast/')) return podcast.handle(req, res);
     if (pathname.startsWith('/api/signal/')) return signal.enabled() ? signal.handle(req, res) : forbidden(res, 'Signal is not set up on this server');
     if (pathname.startsWith('/api/mail/')) return mail.handle(req, res);