feat(music-lab): video.py — Windows에 style/background_mode/tracks 전달 + orchestrator 파라미터 wiring

music-lab/app/pipeline/orchestrator.py

@@ -202,12 +202,24 @@ async def _run_video(p, ctx):
     vd = setup["visual_defaults"]
     audio_path = ctx["audio_path"]
     cover_path = _local_path(p["cover_url"])
+
+    style = p.get("visual_style") or vd.get("default_visual_style", "essential")
+    bg_mode = p.get("background_mode") or vd.get("default_background_mode", "static")
+    bg_path = None
+    if bg_mode == "video_loop":
+        loop_local = os.path.join(storage.pipeline_dir(p["id"]), "loop.mp4")
+        bg_path = loop_local if os.path.isfile(loop_local) else None
+
     out = await asyncio.to_thread(
         video.generate,
         pipeline_id=p["id"], audio_path=audio_path, cover_path=cover_path,
         genre=ctx["genre"],
         duration_sec=ctx["duration_sec"],
-        resolution=vd["resolution"], style=vd["style"],
+        resolution=vd.get("resolution", "1920x1080"),
+        style=style,
+        background_mode=bg_mode,
+        background_path=bg_path,
+        tracks=ctx["tracks"] if len(ctx["tracks"]) > 1 else None,
     )
     return {"next_state": "video_pending", "fields": {"video_url": out["url"]}}
 
@@ -230,6 +242,7 @@ async def _run_meta(p, ctx, feedback):
                "duration_sec": ctx["duration_sec"], "moods": ctx["moods"]},
         template=setup["metadata_template"],
         trend_keywords=trend_top, feedback=feedback,
+        tracks=ctx["tracks"] if len(ctx["tracks"]) > 1 else None,
     )
     return {"next_state": "meta_pending",
             "fields": {"metadata_json": json.dumps(out, ensure_ascii=False)}}