Fix icon loading in PyInstaller builds

PyInstaller bundles data files into sys._MEIPASS, not the executable directory.

- Add get_resource_path() helper in main.py and main_window.py
- Use _MEIPASS for bundled resources (icon, web files)
- Keep app_dir pointing to executable directory for user data (macros.json)

This fixes the missing icon in taskbar and system tray on Windows builds.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

gui/main_window.py

@@ -5,6 +5,15 @@ import sys
 import threading
 from typing import Optional
 
+
+def get_resource_path(relative_path):
+    """Get the path to a bundled resource file."""
+    if getattr(sys, 'frozen', False):
+        base_path = sys._MEIPASS
+    else:
+        base_path = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+    return os.path.join(base_path, relative_path)
+
 from PySide6.QtWidgets import (
     QMainWindow, QWidget, QVBoxLayout, QHBoxLayout,
     QLabel, QPushButton, QTabWidget, QGridLayout,
@@ -293,11 +302,12 @@ class MainWindow(QMainWindow):
         """Setup system tray icon."""
         self.tray_icon = QSystemTrayIcon(self)
 
-        # Load icon
-        icon_path = os.path.join(self.app_dir, "Macro Pad.png")
+        # Load icon from bundled resources
+        icon_path = get_resource_path("Macro Pad.png")
         if os.path.exists(icon_path):
-            self.tray_icon.setIcon(QIcon(icon_path))
-            self.setWindowIcon(QIcon(icon_path))
+            icon = QIcon(icon_path)
+            self.tray_icon.setIcon(icon)
+            self.setWindowIcon(icon)
         else:
             self.tray_icon.setIcon(self.style().standardIcon(QStyle.StandardPixmap.SP_ComputerIcon))