Fix AttributeError: Initialize language_names before use

src/teletext/ui.py

@@ -128,6 +128,8 @@ class MainWindow(QMainWindow):
         self.is_modified = False
         self.language_overrides = {} # Session-based viewer overrides: (mag, pnum) -> lang_idx
         
+        self.language_names = ["English", "German", "Swedish/Finnish", "Italian", "French", "Portuguese/Spanish", "Turkish", "Romania"]
+
         # UI Components
         self.central_widget = QWidget()
         self.setCentralWidget(self.central_widget)
@@ -341,8 +343,6 @@ class MainWindow(QMainWindow):
         self.language_label = QLabel("Lang: English")
         self.status_bar.addPermanentWidget(self.language_label)
 
-        self.language_names = ["English", "German", "Swedish/Finnish", "Italian", "French", "Portuguese/Spanish", "Turkish", "Romania"]
-
         # Menus
         self.create_menus()