WCAG: Add reduce_motion config, bridge property, OS detection

Config default, reduceMotion Q_PROPERTY on UIBridge, Windows
SystemParametersInfo detection for prefers-reduced-motion.

main.py

@@ -80,6 +80,21 @@ try:
 except:
     pass
 
+# Detect Windows "Reduce Motion" preference
+try:
+    import ctypes
+    SPI_GETCLIENTAREAANIMATION = 0x1042
+    animation_enabled = ctypes.c_bool(True)
+    ctypes.windll.user32.SystemParametersInfoW(
+        SPI_GETCLIENTAREAANIMATION, 0,
+        ctypes.byref(animation_enabled), 0
+    )
+    if not animation_enabled.value:
+        ConfigManager().data["reduce_motion"] = True
+        ConfigManager().save()
+except Exception:
+    pass
+
 # Configure Logging
 class QmlLoggingHandler(logging.Handler, QObject):
     sig_log = Signal(str)