Remove subject filtering, keep only priority buttons

- Remove subject filter menu and related code
- Simplify filtering to priority groups only
- Keep Remove Filters button for priority reset
- Clean up unused code and UI elements

gotify_tray/gui/widgets/MainWindow.py

@@ -28,7 +28,6 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
     hidden = QtCore.pyqtSignal()
     activated = QtCore.pyqtSignal()
     priority_filter_changed = QtCore.pyqtSignal(set)
-    subject_filter_changed = QtCore.pyqtSignal(set)
 
     def __init__(
         self,
@@ -100,10 +99,6 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
         self.pb_critical.setChecked(True)
         self.pb_critical.setCheckable(False)
 
-        self.subject_menu = QtWidgets.QMenu(self.pb_subject)
-        self.pb_subject.setMenu(self.subject_menu)
-        self.subject_actions = {}
-
         self.pb_remove_filters.clicked.connect(self.on_remove_filters_clicked)
 
         # set refresh shortcut (usually ctrl-r)
@@ -280,32 +275,9 @@ class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):
             priorities.add(9)
         self.priority_filter_changed.emit(priorities)
 
-    def on_subject_action_toggled(self):
-        titles = set()
-        for title, action in self.subject_actions.items():
-            if action.isChecked():
-                titles.add(title)
-        print("Subject filter toggled, allowed titles:", titles)
-        self.subject_filter_changed.emit(titles)
-
     def on_remove_filters_clicked(self):
         # Reset priority buttons
         self.pb_low.setChecked(True)
         self.pb_normal.setChecked(True)
         self.pb_high.setChecked(True)
         # Critical is always on
-        # Reset subject filters
-        self.messages_proxy_model.set_allowed_titles(set())
-        for action in self.subject_actions.values():
-            action.setChecked(True)
-
-    def update_subject_filters(self, titles: set[str]):
-        print("Updating subject filters with titles:", titles)
-        self.subject_menu.clear()
-        self.subject_actions.clear()
-        for title in sorted(titles):
-            action = self.subject_menu.addAction(title)
-            action.setCheckable(True)
-            action.setChecked(True)
-            action.triggered.connect(self.on_subject_action_toggled)
-            self.subject_actions[title] = action