feat: add persistent settings for avatar name

- Add QSettings import from PyQt6.QtCore
- Add _load_settings() method to load player name on startup
- Add _save_settings() method to save player name when settings change
- Settings stored in Lemontropia/Suite registry/file
- Player name now persists between app launches

ui/main_window.py

@@ -21,7 +21,7 @@ from PyQt6.QtWidgets import (
     QMessageBox, QGroupBox, QFrame, QApplication,
     QTreeWidget, QTreeWidgetItem, QHeaderView
 )
-from PyQt6.QtCore import Qt, pyqtSignal, QTimer, QSize
+from PyQt6.QtCore import Qt, pyqtSignal, QTimer, QSize, QSettings
 from PyQt6.QtGui import QAction, QFont, QColor, QPalette, QIcon
 
 
@@ -273,6 +273,9 @@ class MainWindow(QMainWindow):
         # Player settings
         self.player_name: str = ""  # Set via Settings dialog
         
+        # Load persistent settings
+        self._load_settings()
+
         # Selected gear
         self._selected_weapon: Optional[str] = None
         self._selected_weapon_stats: Optional[dict] = None
@@ -1612,11 +1615,25 @@ class MainWindow(QMainWindow):
         dialog = SettingsDialog(self, self.player_name)
         if dialog.exec() == QDialog.DialogCode.Accepted:
             self.player_name = dialog.get_player_name()
+            self._save_settings()  # Save to persistent storage
             if self.player_name:
                 self.log_info("Settings", f"Avatar name set to: {self.player_name}")
             else:
                 self.log_info("Settings", "Warning: No avatar name set. Global tracking may not work correctly.")
 
+    def _load_settings(self):
+        """Load persistent settings from QSettings."""
+        settings = QSettings("Lemontropia", "Suite")
+        self.player_name = settings.value("player/name", "", type=str)
+        if self.player_name:
+            self.log_info("Settings", f"Loaded avatar name: {self.player_name}")
+
+    def _save_settings(self):
+        """Save persistent settings to QSettings."""
+        settings = QSettings("Lemontropia", "Suite")
+        settings.setValue("player/name", self.player_name)
+        settings.sync()  # Ensure settings are written immediately
+
     def on_loadout_manager(self):
         """Open Loadout Manager dialog."""
         from ui.loadout_manager_simple import LoadoutManagerDialog