Windows support

Widgets.py

@@ -7,7 +7,7 @@ from typing import Callable, Optional
 
 import flet as ft
 
-from Core import AppConfig, ChildEnvironment, ChipButton, Note, NotificationStyle, Palette
+from Core import AppConfig, ChildEnvironment, ChipButton, IsWindows, Note, NotificationStyle, Palette
 from Service import RestartIfRunning
 from Sortd import Setup, SortdError
 
@@ -69,7 +69,10 @@ class App:
 
     def OpenFolder(self, PathText: str) -> None:
         try:
-            subprocess.Popen(["xdg-open", PathText], env=ChildEnvironment(), start_new_session=True)
+            if IsWindows:
+                os.startfile(PathText)  # Explorer
+            else:
+                subprocess.Popen(["xdg-open", PathText], env=ChildEnvironment(), start_new_session=True)
         except OSError as Error:
             self.Notify(f"Couldn't open {PathText}: {Error}", "error")