Switched menu resource loading to use bundled PNG assets (instead of SVG paths) for zc-menu-* icons, so menu icon resolution is consistent and no longer depends on SVG/icon-theme availability on different platforms (including Win32 builds).

Updated the GResource manifest so all menu icons now come from data/icons/menu/{light,dark} PNG files and are embedded with to-pixdata preprocessing, ensuring the app uses one unified internal icon set across platforms.

    Generated and added PNG assets for both light and dark menu icon variants under data/icons/menu/ to back the new resource paths used by the GTK menu code.

    Fixed menu icon resource detection to fall back from PNG to SVG when probing zc-menu-* entries, so menu item icon lookup no longer fails just because one format is unavailable at runtime.

    Updated GTK menu icon loading to use gdk_pixbuf_new_from_resource (instead of ..._at_scale) and added explicit fallback order across variant/light and PNG/SVG resources, which addresses the “red no-entry square” missing-icon behavior you reported.

    Kept compatibility with your previous menu resource setup while making loading more resilient on Win32 and other environments where resource/pixbuf behavior differs.

data/zoitechat.gresource.xml

@@ -21,58 +21,58 @@
 		<file alias="tree_server.png" preprocess="to-pixdata">icons/tree_server.png</file>
 		<file alias="tree_util.png" preprocess="to-pixdata">icons/tree_util.png</file>
 
-		<file alias="menu/light/new.svg">icons/menu/light/new.svg</file>
-		<file alias="menu/light/network-list.svg">icons/menu/light/network-list.svg</file>
-		<file alias="menu/light/load-plugin.svg">icons/menu/light/load-plugin.svg</file>
-		<file alias="menu/light/detach.svg">icons/menu/light/detach.svg</file>
-		<file alias="menu/light/close.svg">icons/menu/light/close.svg</file>
-		<file alias="menu/light/quit.svg">icons/menu/light/quit.svg</file>
-		<file alias="menu/light/disconnect.svg">icons/menu/light/disconnect.svg</file>
-		<file alias="menu/light/connect.svg">icons/menu/light/connect.svg</file>
-		<file alias="menu/light/join.svg">icons/menu/light/join.svg</file>
-		<file alias="menu/light/chanlist.svg">icons/menu/light/chanlist.svg</file>
-		<file alias="menu/light/preferences.svg">icons/menu/light/preferences.svg</file>
-		<file alias="menu/light/clear.svg">icons/menu/light/clear.svg</file>
-		<file alias="menu/light/copy.svg">icons/menu/light/copy.svg</file>
-		<file alias="menu/light/delete.svg">icons/menu/light/delete.svg</file>
-		<file alias="menu/light/add.svg">icons/menu/light/add.svg</file>
-		<file alias="menu/light/remove.svg">icons/menu/light/remove.svg</file>
-		<file alias="menu/light/spell-check.svg">icons/menu/light/spell-check.svg</file>
-		<file alias="menu/light/save.svg">icons/menu/light/save.svg</file>
-		<file alias="menu/light/save-as.svg">icons/menu/light/save-as.svg</file>
-		<file alias="menu/light/refresh.svg">icons/menu/light/refresh.svg</file>
-		<file alias="menu/light/search.svg">icons/menu/light/search.svg</file>
-		<file alias="menu/light/find.svg">icons/menu/light/find.svg</file>
-		<file alias="menu/light/previous.svg">icons/menu/light/previous.svg</file>
-		<file alias="menu/light/next.svg">icons/menu/light/next.svg</file>
-		<file alias="menu/light/help.svg">icons/menu/light/help.svg</file>
-		<file alias="menu/light/about.svg">icons/menu/light/about.svg</file>
+		<file alias="menu/light/new.png" preprocess="to-pixdata">icons/menu/light/new.png</file>
+		<file alias="menu/light/network-list.png" preprocess="to-pixdata">icons/menu/light/network-list.png</file>
+		<file alias="menu/light/load-plugin.png" preprocess="to-pixdata">icons/menu/light/load-plugin.png</file>
+		<file alias="menu/light/detach.png" preprocess="to-pixdata">icons/menu/light/detach.png</file>
+		<file alias="menu/light/close.png" preprocess="to-pixdata">icons/menu/light/close.png</file>
+		<file alias="menu/light/quit.png" preprocess="to-pixdata">icons/menu/light/quit.png</file>
+		<file alias="menu/light/disconnect.png" preprocess="to-pixdata">icons/menu/light/disconnect.png</file>
+		<file alias="menu/light/connect.png" preprocess="to-pixdata">icons/menu/light/connect.png</file>
+		<file alias="menu/light/join.png" preprocess="to-pixdata">icons/menu/light/join.png</file>
+		<file alias="menu/light/chanlist.png" preprocess="to-pixdata">icons/menu/light/chanlist.png</file>
+		<file alias="menu/light/preferences.png" preprocess="to-pixdata">icons/menu/light/preferences.png</file>
+		<file alias="menu/light/clear.png" preprocess="to-pixdata">icons/menu/light/clear.png</file>
+		<file alias="menu/light/copy.png" preprocess="to-pixdata">icons/menu/light/copy.png</file>
+		<file alias="menu/light/delete.png" preprocess="to-pixdata">icons/menu/light/delete.png</file>
+		<file alias="menu/light/add.png" preprocess="to-pixdata">icons/menu/light/add.png</file>
+		<file alias="menu/light/remove.png" preprocess="to-pixdata">icons/menu/light/remove.png</file>
+		<file alias="menu/light/spell-check.png" preprocess="to-pixdata">icons/menu/light/spell-check.png</file>
+		<file alias="menu/light/save.png" preprocess="to-pixdata">icons/menu/light/save.png</file>
+		<file alias="menu/light/save-as.png" preprocess="to-pixdata">icons/menu/light/save-as.png</file>
+		<file alias="menu/light/refresh.png" preprocess="to-pixdata">icons/menu/light/refresh.png</file>
+		<file alias="menu/light/search.png" preprocess="to-pixdata">icons/menu/light/search.png</file>
+		<file alias="menu/light/find.png" preprocess="to-pixdata">icons/menu/light/find.png</file>
+		<file alias="menu/light/previous.png" preprocess="to-pixdata">icons/menu/light/previous.png</file>
+		<file alias="menu/light/next.png" preprocess="to-pixdata">icons/menu/light/next.png</file>
+		<file alias="menu/light/help.png" preprocess="to-pixdata">icons/menu/light/help.png</file>
+		<file alias="menu/light/about.png" preprocess="to-pixdata">icons/menu/light/about.png</file>
 
-		<file alias="menu/dark/new.svg">icons/menu/dark/new.svg</file>
-		<file alias="menu/dark/network-list.svg">icons/menu/dark/network-list.svg</file>
-		<file alias="menu/dark/load-plugin.svg">icons/menu/dark/load-plugin.svg</file>
-		<file alias="menu/dark/detach.svg">icons/menu/dark/detach.svg</file>
-		<file alias="menu/dark/close.svg">icons/menu/dark/close.svg</file>
-		<file alias="menu/dark/quit.svg">icons/menu/dark/quit.svg</file>
-		<file alias="menu/dark/disconnect.svg">icons/menu/dark/disconnect.svg</file>
-		<file alias="menu/dark/connect.svg">icons/menu/dark/connect.svg</file>
-		<file alias="menu/dark/join.svg">icons/menu/dark/join.svg</file>
-		<file alias="menu/dark/chanlist.svg">icons/menu/dark/chanlist.svg</file>
-		<file alias="menu/dark/preferences.svg">icons/menu/dark/preferences.svg</file>
-		<file alias="menu/dark/clear.svg">icons/menu/dark/clear.svg</file>
-		<file alias="menu/dark/copy.svg">icons/menu/dark/copy.svg</file>
-		<file alias="menu/dark/delete.svg">icons/menu/dark/delete.svg</file>
-		<file alias="menu/dark/add.svg">icons/menu/dark/add.svg</file>
-		<file alias="menu/dark/remove.svg">icons/menu/dark/remove.svg</file>
-		<file alias="menu/dark/spell-check.svg">icons/menu/dark/spell-check.svg</file>
-		<file alias="menu/dark/save.svg">icons/menu/dark/save.svg</file>
-		<file alias="menu/dark/save-as.svg">icons/menu/dark/save-as.svg</file>
-		<file alias="menu/dark/refresh.svg">icons/menu/dark/refresh.svg</file>
-		<file alias="menu/dark/search.svg">icons/menu/dark/search.svg</file>
-		<file alias="menu/dark/find.svg">icons/menu/dark/find.svg</file>
-		<file alias="menu/dark/previous.svg">icons/menu/dark/previous.svg</file>
-		<file alias="menu/dark/next.svg">icons/menu/dark/next.svg</file>
-		<file alias="menu/dark/help.svg">icons/menu/dark/help.svg</file>
-		<file alias="menu/dark/about.svg">icons/menu/dark/about.svg</file>
+		<file alias="menu/dark/new.png" preprocess="to-pixdata">icons/menu/dark/new.png</file>
+		<file alias="menu/dark/network-list.png" preprocess="to-pixdata">icons/menu/dark/network-list.png</file>
+		<file alias="menu/dark/load-plugin.png" preprocess="to-pixdata">icons/menu/dark/load-plugin.png</file>
+		<file alias="menu/dark/detach.png" preprocess="to-pixdata">icons/menu/dark/detach.png</file>
+		<file alias="menu/dark/close.png" preprocess="to-pixdata">icons/menu/dark/close.png</file>
+		<file alias="menu/dark/quit.png" preprocess="to-pixdata">icons/menu/dark/quit.png</file>
+		<file alias="menu/dark/disconnect.png" preprocess="to-pixdata">icons/menu/dark/disconnect.png</file>
+		<file alias="menu/dark/connect.png" preprocess="to-pixdata">icons/menu/dark/connect.png</file>
+		<file alias="menu/dark/join.png" preprocess="to-pixdata">icons/menu/dark/join.png</file>
+		<file alias="menu/dark/chanlist.png" preprocess="to-pixdata">icons/menu/dark/chanlist.png</file>
+		<file alias="menu/dark/preferences.png" preprocess="to-pixdata">icons/menu/dark/preferences.png</file>
+		<file alias="menu/dark/clear.png" preprocess="to-pixdata">icons/menu/dark/clear.png</file>
+		<file alias="menu/dark/copy.png" preprocess="to-pixdata">icons/menu/dark/copy.png</file>
+		<file alias="menu/dark/delete.png" preprocess="to-pixdata">icons/menu/dark/delete.png</file>
+		<file alias="menu/dark/add.png" preprocess="to-pixdata">icons/menu/dark/add.png</file>
+		<file alias="menu/dark/remove.png" preprocess="to-pixdata">icons/menu/dark/remove.png</file>
+		<file alias="menu/dark/spell-check.png" preprocess="to-pixdata">icons/menu/dark/spell-check.png</file>
+		<file alias="menu/dark/save.png" preprocess="to-pixdata">icons/menu/dark/save.png</file>
+		<file alias="menu/dark/save-as.png" preprocess="to-pixdata">icons/menu/dark/save-as.png</file>
+		<file alias="menu/dark/refresh.png" preprocess="to-pixdata">icons/menu/dark/refresh.png</file>
+		<file alias="menu/dark/search.png" preprocess="to-pixdata">icons/menu/dark/search.png</file>
+		<file alias="menu/dark/find.png" preprocess="to-pixdata">icons/menu/dark/find.png</file>
+		<file alias="menu/dark/previous.png" preprocess="to-pixdata">icons/menu/dark/previous.png</file>
+		<file alias="menu/dark/next.png" preprocess="to-pixdata">icons/menu/dark/next.png</file>
+		<file alias="menu/dark/help.png" preprocess="to-pixdata">icons/menu/dark/help.png</file>
+		<file alias="menu/dark/about.png" preprocess="to-pixdata">icons/menu/dark/about.png</file>
 	</gresource>
 </gresources>