feat: sims launcher

sims/main.py

@@ -36,6 +36,17 @@ notmuch_widget = None
 
 app = Application("sims", dummy, finder)
 
+
+@Application.action()
+def open_finder():
+    finder.show()
+
+
+@Application.action()
+def refresh_notmuch():
+    if notmuch_widget is not None:
+        notmuch_widget.service.update_unread_count()
+
 # Load CSS - use Stylix if enabled, otherwise use default
 if STYLIX.get("enable", False):
     stylix_css_path = get_stylix_css_path()