refactor: rename Win32TrayApp to PystrayApp

whisper_local/tray/_tray.py

@@ -1,4 +1,4 @@
-"""Tray-App und App-Zustände für whisper-local (Windows)."""
+"""Tray-App und App-Zustände für whisper-local."""
 
 import enum
 import threading
@@ -11,8 +11,8 @@ class AppState(enum.Enum):
     TRANSCRIBING = "transcribing"
 
 
-class Win32TrayApp:
-    """Tray-Icon via pystray für Windows."""
+class PystrayApp:
+    """Tray-Icon via pystray — cross-platform (Windows + Linux)."""
 
     def __init__(self, on_settings: Callable[[], None], on_quit: Callable[[], None]):
         self._on_settings = on_settings