Add Sonner-based notifications and UX polish

app/root/portfolio/page.tsx

@@ -1,8 +1,6 @@
 import { redirect } from "next/navigation";
 
 import { RootDashboardShell } from "@/components/root/root-dashboard-shell";
-import { MotionFade } from "@/components/motion-fade";
-import { FlashMessage } from "@/components/root/flash-message";
 import { PortfolioProjectsOverview } from "@/components/root/portfolio-projects-overview";
 import { clearAdminSessionCookie, isAdminAuthenticated } from "@/lib/admin-auth";
 import { getAdminPortfolioCategories, getAdminPortfolioProjects } from "@/lib/portfolio";
@@ -67,18 +65,6 @@ export default async function RootPortfolioPage({ searchParams }: RootPortfolioP
       headerDescription={copy.subtitle}
     >
       <div className="space-y-6">
-        {searchParams?.success ? (
-          <MotionFade delay={0.08}>
-            <FlashMessage type="success" message={searchParams.success} />
-          </MotionFade>
-        ) : null}
-
-        {searchParams?.error ? (
-          <MotionFade delay={0.1}>
-            <FlashMessage type="error" message={searchParams.error} />
-          </MotionFade>
-        ) : null}
-
         <PortfolioProjectsOverview
           categories={categories}
           projects={projects}