feat: add UI conformance and launch context

webui/src/components/PageLayout.tsx

@@ -82,7 +82,7 @@ export default function PageLayout({
   notices,
   mode = "standalone",
   scrollable,
-  stickyHeader = true,
+  stickyHeader,
   showHeader = true,
   documentationType = "user",
   className = "",
@@ -96,6 +96,7 @@ export default function PageLayout({
 }: PageLayoutProps) {
   const shouldScroll = scrollable ?? mode === "standalone";
   const shouldInset = mode !== "embedded";
+  const shouldStickHeader = stickyHeader ?? mode !== "embedded";
   const layoutClasses = [
     "page-layout",
     `page-layout-${mode}`,
@@ -120,7 +121,7 @@ export default function PageLayout({
           description={description}
           actions={actions}
           loading={headerLoading ?? loading}
-          sticky={stickyHeader}
+          sticky={shouldStickHeader}
           className={headerClassName}
         />
       )}

webui/src/components/UnsavedChangesGuard.tsx

@@ -171,8 +171,6 @@ export function UnsavedChangesProvider({ children }: {children: ReactNode;}) {
         open
         role="alertdialog"
         title={registration.title ?? "i18n:govoplan-core.unsaved_changes.29267269"}
-        className="unsaved-changes-dialog"
-        footerClassName="unsaved-changes-actions"
         closeOnBackdrop={!saving}
         closeDisabled={saving}
         onClose={() => setPendingAction(null)}