Gap 13: BWF/INFO metadata cho WAV export — wav_bwf.patch_bwf_metadata chen bext + LIST/INFO (INAM/IART/ISRC/ICMT) truoc data chunk, giu nguyen PCM bits; render_project(metadata=) + RenderRequest.metadata + cloud render task; ExportModal Title/Artist/ISRC; test_66 (178 passed)

app/api/v1/plugins.py

@@ -616,6 +616,8 @@ class RenderRequest(BaseModel):
     normalize: Optional[bool] = False
     normalize_target: Optional[str] = "-1dbtp"
     mono_check: Optional[bool] = False
+    # Gap 13: BWF/INFO metadata (title/artist/isrc/comment/description/...)
+    metadata: Optional[dict] = None
 
 
 class FxGuiRequest(BaseModel):
@@ -1212,6 +1214,7 @@ def render_project(
             dither=bool(req.dither),
             normalize=bool(req.normalize),
             normalize_target=req.normalize_target or "-1dbtp",
+            metadata=req.metadata or None,
         )
         # EBU R128 loudness + true peak (D1) — trả kèm response để mastering
         # panel hiển thị LUFS/dBTP ngay sau export mà không cần đọc lại file.