Fix icon path for PyInstaller frozen builds, add icon.ico

src/app.py

@@ -142,6 +142,10 @@ class StickyCanvasApp:
     # ── İkon ────────────────────────────────────────────────────────
 
     def _icon_path(self) -> Optional[str]:
+        # PyInstaller bundle'da sys._MEIPASS kullan
+        if getattr(sys, 'frozen', False):
+            base = sys._MEIPASS
+        else:
             base = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
         p = os.path.join(base, "assets", "icon.png")
         return p if os.path.exists(p) else None