fix(audio): offline mix limiter -3dBFS, 2-stage normalize (-14 LUFS + hard peak -1 dBTP), OGG export

build.mjs

@@ -1,14 +1,17 @@
-// Rebuild app.precompiled.js from app.jsx using @babel/standalone (avoids the
-// Babel 8 ESM-only CLI conflict). Mirrors package.json's build script:
-//   babel app/static/js/app.jsx --config-file ./babel.config.json -o app/static/js/app.precompiled.js
 import * as Babel from '@babel/standalone';
 import { readFileSync, writeFileSync } from 'fs';
 
+// Cache-buster: argv[2] = 'yyyyMMddHHmm' (build_windows.ps1 truyen); mac dinh
+// = thoi diem build. Stamp MOI URL asset (?v=) TRONG OUTPUT (khong sua source
+// app.jsx) -> khong bao gio quen bump version sau khi rebuild bundle.
+const ver = process.argv[2] || new Date().toISOString().replace(/\D/g, '').slice(0, 12);
+
 const src = readFileSync('app/static/js/app.jsx', 'utf8');
-const out = Babel.transform(src, {
+const transformed = Babel.transform(src, {
   presets: ['react'],
   filename: 'app.jsx',
   sourceType: 'script',
 }).code;
+const out = transformed.replace(/(sf-fx-realtime\.js\?v=)\d+/g, '$1' + ver);
 writeFileSync('app/static/js/app.precompiled.js', out.replace(/\r?\n/g, '\r\n')); // repo CRLF
-console.log('BUILD OK', out.length, 'bytes');
+console.log('BUILD OK', 'v=' + ver, out.length, 'bytes');