feat: GTK3-only theming overhaul—new theme service (discover/import/inherits), layered CSS+settings.ini apply w/ safe rollback + caching; widget/xtext palette mapping + all-colors editor; lots of win32/CI libarchive plumbing + installer assets;

src/fe-gtk/theme/tests/test-theme-gtk3-stub.c

@@ -0,0 +1,71 @@
+#include <glib.h>
+
+#include "../theme-gtk3.h"
+
+static int apply_current_calls;
+
+void
+test_theme_gtk3_stub_reset (void)
+{
+	apply_current_calls = 0;
+}
+
+int
+test_theme_gtk3_stub_apply_current_calls (void)
+{
+	return apply_current_calls;
+}
+
+void
+theme_gtk3_init (void)
+{
+}
+
+gboolean
+theme_gtk3_apply_current (GError **error)
+{
+	(void) error;
+	apply_current_calls++;
+	return TRUE;
+}
+
+gboolean
+theme_gtk3_apply (const char *theme_id, ThemeGtk3Variant variant, GError **error)
+{
+	(void) theme_id;
+	(void) variant;
+	(void) error;
+	return TRUE;
+}
+
+gboolean
+theme_gtk3_refresh (const char *theme_id, ThemeGtk3Variant variant, GError **error)
+{
+	(void) theme_id;
+	(void) variant;
+	(void) error;
+	return TRUE;
+}
+
+ThemeGtk3Variant
+theme_gtk3_variant_for_theme (const char *theme_id)
+{
+	(void) theme_id;
+	return THEME_GTK3_VARIANT_PREFER_LIGHT;
+}
+
+void
+theme_gtk3_invalidate_provider_cache (void)
+{
+}
+
+void
+theme_gtk3_disable (void)
+{
+}
+
+gboolean
+theme_gtk3_is_active (void)
+{
+	return FALSE;
+}