Compilation .exe PyInstaller + fix chemins resources

- L'installation compile maintenant un vrai .exe autonome
- Les raccourcis Bureau/Menu Demarrer pointent vers le .exe
- Support PyInstaller pour les chemins resources (logo, icone)
- La mise a jour recompile aussi le .exe
- Fallback lanceur .vbs si compilation echoue

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

app/main_window.py

@@ -38,9 +38,10 @@ class MainWindow(QMainWindow):
         self.setMinimumSize(1000, 700)
 
         # Icone de la fenetre
+        import sys as _sys
         from PyQt6.QtGui import QIcon
-        icon_path = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
-                                 "resources", "logo.png")
+        _base = _sys._MEIPASS if getattr(_sys, 'frozen', False) else os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+        icon_path = os.path.join(_base, "resources", "logo.png")
         if os.path.exists(icon_path):
             self.setWindowIcon(QIcon(icon_path))
         self._current_file = None
@@ -349,8 +350,9 @@ class MainWindow(QMainWindow):
 
         # Logo
         logo_label = QLabel()
-        logo_path = os.path.join(os.path.dirname(os.path.dirname(os.path.abspath(__file__))),
-                                 "resources", "logo.png")
+        import sys as _sys
+        _base = _sys._MEIPASS if getattr(_sys, 'frozen', False) else os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+        logo_path = os.path.join(_base, "resources", "logo.png")
         if os.path.exists(logo_path):
             pixmap = QPixmap(logo_path).scaled(120, 120, Qt.AspectRatioMode.KeepAspectRatio,
                                                 Qt.TransformationMode.SmoothTransformation)