staged/sequential pipeline modes + dark themed Qt GUI

main.py

@@ -1,17 +1,16 @@
 #!/usr/bin/env python3
-"""Song Transcriber v3 — Qt GUI entry point.
-
-Run: python main.py
-"""
+"""Song Transcriber — Qt GUI entry point."""
 from __future__ import annotations
 
 import ctypes
 import os
 import sys
 
+# Must be set BEFORE PySide6 is imported.
+os.environ.setdefault("QT_LOGGING_RULES", "qt.qpa.wayland.textinput=false")
+
 
 def preload_cudnn() -> None:
-    """Preload cuDNN shared libraries so torch / onnxruntime can find them."""
     try:
         import nvidia.cudnn
     except ImportError:
@@ -27,13 +26,30 @@ def preload_cudnn() -> None:
                 pass
 
 
+def enable_tf32() -> None:
+    """Enable TF32 for faster matmul on Ampere+ GPUs (RTX 30/40 series)."""
+    try:
+        import torch
+        if torch.cuda.is_available():
+            torch.backends.cuda.matmul.allow_tf32 = True
+            torch.backends.cudnn.allow_tf32 = True
+    except ImportError:
+        pass
+
+
 def main() -> int:
     preload_cudnn()
+    enable_tf32()
+
     from PySide6.QtWidgets import QApplication
+    from gui.theme import DARK_STYLESHEET
     from gui.main_window import MainWindow
 
     app = QApplication(sys.argv)
     app.setApplicationName("Audio Transcriber")
+    app.setStyle("Fusion")
+    app.setStyleSheet(DARK_STYLESHEET)
+
     window = MainWindow()
     window.show()
     return app.exec()