Preload AudioProcessor at module import for ZeroGPU snapshot

app.py

@@ -163,15 +163,10 @@ _download_all()
 from audio_core.processor import AudioProcessor  # noqa: E402
 from common.handlers.base import ProcessJob  # noqa: E402
 
-_processor: AudioProcessor | None = None
-
-
-def _get_processor() -> AudioProcessor:
-    global _processor
-    if _processor is None:
-        _processor = AudioProcessor()
-        _processor.startup()
-    return _processor
+# Load models at module import so ZeroGPU snapshots the warm state and
+# every request starts with weights already resident.
+processor = AudioProcessor()
+processor.startup()
 
 
 # ── Generation ────────────────────────────────────────────────────────────
@@ -214,9 +209,6 @@ def generate(
     raw_xml,
     progress=gr.Progress(track_tqdm=True),
 ):
-    progress(0, desc="Loading models (cold start can take a few minutes)")
-    processor = _get_processor()
-
     if raw_xml and raw_xml.strip():
         prompt = raw_xml.strip()
     else: