feat(ui): admin-only root link and shared header navigation

components/theme-provider.tsx

@@ -2,6 +2,19 @@
 
 import { ThemeProvider as NextThemesProvider, type ThemeProviderProps } from "next-themes";
 
+const defaultThemeProps: ThemeProviderProps = {
+  attribute: "class",
+  defaultTheme: "system",
+  enableSystem: true,
+  disableTransitionOnChange: true,
+  enableColorScheme: true,
+  storageKey: "mohfarawati-theme",
+};
+
 export function ThemeProvider({ children, ...props }: ThemeProviderProps) {
-  return <NextThemesProvider {...props}>{children}</NextThemesProvider>;
+  return (
+    <NextThemesProvider {...defaultThemeProps} {...props}>
+      {children}
+    </NextThemesProvider>
+  );
 }