Fix export WAV khong mo duoc: default 32-bit float -> PCM 16 (client + server render + plugins.py)

app/api/v1/plugins.py

@@ -1257,7 +1257,7 @@ def render_project(
     try:
         result_path = engine.render_project(
             req.project_json, output_path,
-            bit_depth=req.bit_depth or 32,
+            bit_depth=req.bit_depth or 16,
             out_sample_rate=req.sample_rate or 0,
             dither=bool(req.dither),
             normalize=bool(req.normalize),

app/core/render_engine.py

@@ -996,7 +996,8 @@ class PythonRenderEngine:
                     if np.isfinite(_tp):
                         master_buffer *= 10 ** ((-1.0 - _tp) / 20.0)
 
-            # Write final output file (D3: PCM_16/PCM_24 + dither, FLOAT mac dinh).
+            # Write final output file (D3: PCM_16/PCM_24 + dither, PCM_16 mac dinh —
+            # 32-bit float WAV bi Windows Media Player va nhieu app khac tu choi).
             # OGG: Vorbis float lossy — bỏ dither/PCM/BWF (chunk WAV-only).
             ext = os.path.splitext(output_filepath)[1].lower()
             if ext == ".ogg":
@@ -1009,7 +1010,8 @@ class PythonRenderEngine:
                 sf.write(output_filepath, _quantize_pcm(master_buffer, 24, dither).T,
                          out_sr, subtype="PCM_24")
             else:
-                sf.write(output_filepath, master_buffer.T, out_sr, subtype="FLOAT")
+                sf.write(output_filepath, _quantize_pcm(master_buffer, 16, dither).T,
+                         out_sr, subtype="PCM_16")
             # Gap 13: BWF/INFO chunks (bext + LIST/INFO title/artist/ISRC) —
             # chen sau khi ghi PCM, loi metadata khong lam hong file audio.
             if metadata and ext != ".ogg":

app/static/js/app.jsx

@@ -12497,7 +12497,7 @@ const ExportModal = ({ open, onClose, exportSettings, setExportSettings, isExpor
             <div>
               <label className="block text-[7px] text-zinc-500 font-bold uppercase mb-0.5">Định dạng</label>
               <select value={exportSettings.format}
-                onChange={e => setExportSettings(p => ({ ...p, format: e.target.value, sampleRate: '44100', bitDepth: 'float', quality: '44khz' }))}
+                onChange={e => setExportSettings(p => ({ ...p, format: e.target.value, sampleRate: '44100', bitDepth: '16', quality: '44khz' }))}
                 className="w-full bg-[#141414] border border-zinc-800 rounded px-1 py-0.5 text-xs text-zinc-300 focus:outline-none">
                 <option value="wav">WAV</option>
                 <option value="mp3">MP3</option>
@@ -18431,7 +18431,7 @@ const App = () => {
     try { remExpDir = localStorage.getItem('sonic_remember_export_dir') === '1'; } catch (e) { }
     return {
       sampleRate: '44100',
-      bitDepth: 'float',
+      bitDepth: '16',
       format: 'wav',
       source: 'project',
       quality: '44khz',

app/templates/index.html

@@ -51,7 +51,7 @@
     <script src="/static/js/services/promptTemplateManager.js?v=202607281039"></script>
     <script src="/static/js/services/undoRedoEngine.js?v=202607290941"></script>
     <script src="/static/js/services/chordTheory.js?v=202608211300"></script>
-    <script src="/static/js/app.precompiled.js?v=202608241919" defer></script>
+    <script src="/static/js/app.precompiled.js?v=202608241954" defer></script>
     <link rel="stylesheet" href="/static/css/styles.css?v=202607271016">
     <style>
         :root {