feat: ensure toolbar icons are included in MSI bundle during build process

build/scripts/build_windows.py

@@ -243,6 +243,10 @@ class WindowsBuilder:
         if not self._create_wix_source():
             return False
 
+        # Ensure toolbar icons are present in bundled resources before harvesting.
+        if not self._ensure_toolbar_icons_in_bundle():
+            return False
+
         # Harvest application files using Heat
         print(f"  Harvesting application files...")
         dist_folder = self.dist_dir / "WebDropBridge"
@@ -352,6 +356,36 @@ class WindowsBuilder:
 
         return True
 
+    def _ensure_toolbar_icons_in_bundle(self) -> bool:
+        """Ensure toolbar icon files exist in the bundled app folder.
+
+        This guarantees WiX Heat harvest includes these icons in the MSI,
+        even if a previous PyInstaller run omitted them.
+        """
+        src_icons_dir = self.project_root / "resources" / "icons"
+        bundle_icons_dir = self.dist_dir / "WebDropBridge" / "_internal" / "resources" / "icons"
+        required_icons = ["home.ico", "reload.ico", "open.ico", "openwith.ico"]
+
+        try:
+            bundle_icons_dir.mkdir(parents=True, exist_ok=True)
+
+            for icon_name in required_icons:
+                src = src_icons_dir / icon_name
+                dst = bundle_icons_dir / icon_name
+
+                if not src.exists():
+                    print(f"❌ Required icon not found: {src}")
+                    return False
+
+                if not dst.exists() or src.stat().st_mtime > dst.stat().st_mtime:
+                    shutil.copy2(src, dst)
+                    print(f"  ✓ Ensured toolbar icon in bundle: {icon_name}")
+
+            return True
+        except Exception as e:
+            print(f"❌ Failed to ensure toolbar icons in bundle: {e}")
+            return False
+
     def _create_wix_source(self) -> bool:
         """Create WiX source file for MSI generation.