feat(marketing): add dashboard cta to public navbars

src/pages/About.tsx

@@ -129,6 +129,18 @@ export default function About() {
           </nav>
 
           <div className="flex items-center gap-2">
+            <Button
+              asChild
+              className="hidden h-11 rounded-full bg-slate-950 px-4 text-sm font-semibold text-white hover:bg-slate-800 dark:bg-cyan-400 dark:text-slate-950 dark:hover:bg-cyan-300 sm:inline-flex"
+            >
+              <Link to={ctaTarget}>
+                {isAuthenticated
+                  ? t.landing.actions.openWorkspace
+                  : lang === "fa"
+                    ? "پنل کاربری"
+                    : "Dashboard"}
+              </Link>
+            </Button>
             <button
               type="button"
               onClick={() => setLanguage(lang === "fa" ? "en" : "fa")}

src/pages/Landing.tsx

@@ -140,6 +140,16 @@ export default function Landing() {
           </div>
 
           <div className="flex items-center gap-2">
+            <Button
+              onClick={() => navigate(ctaTarget)}
+              className="hidden h-11 rounded-full bg-slate-950 px-4 text-sm font-semibold text-white hover:bg-slate-800 dark:bg-cyan-400 dark:text-slate-950 dark:hover:bg-cyan-300 sm:inline-flex"
+            >
+              {isAuthenticated
+                ? t.landing.actions.openWorkspace
+                : lang === "fa"
+                  ? "پنل کاربری"
+                  : "Dashboard"}
+            </Button>
             <button
               type="button"
               onClick={() => setLanguage(lang === "fa" ? "en" : "fa")}