refactor: migrate dashboard routes from dynamic segments to explicit /dashboard/[username] directory structure

Author: JhaSourav07

app/(root)/[username]/page.test.tsx …root)/dashboard/[username]/page.test.tsxapp/(root)/[username]/page.test.tsx renamed to app/(root)/dashboard/[username]/page.test.tsx app/(root)/[username]/page.test.tsx renamed to app/(root)/dashboard/[username]/page.test.tsx

@@ -35,7 +35,7 @@ export async function generateMetadata({
     openGraph: {
       title,
       description,
-      url: `${BASE_URL}/${username}`,
+      url: `${BASE_URL}/dashboard/${username}`,
       siteName: 'CommitPulse',
       images: [{ url: ogImage, width: 1200, height: 630, alt: title }],
       type: 'profile',

app/(root)/[username]/page.tsx app/(root)/dashboard/[username]/page.tsxapp/(root)/[username]/page.tsx renamed to app/(root)/dashboard/[username]/page.tsx

@@ -211,7 +211,7 @@ export default function LandingPage() {
                   </AnimatePresence>
                 </button>
                 <Link
-                  href={hasUsername ? `/${trimmedUsername}` : '/'}
+                  href={hasUsername ? `/dashboard/${trimmedUsername}` : '/'}
                   aria-disabled={!hasUsername}
                   onClick={(e) => {
                     if (!hasUsername) e.preventDefault();
@@ -456,7 +456,7 @@ function SuccessGuide({
             monolith&apos;s colour palette.
           </p>
           <div className="mt-8 flex justify-center border-t border-white/5 pt-6">
-            <Link href={`/${username}`}>
+            <Link href={`/dashboard/${username}`}>
               <button className="bg-white text-black hover:bg-zinc-100 px-6 py-2.5 rounded-lg text-sm font-semibold transition-all duration-200 hover:scale-[1.01] active:scale-[0.99]">
                 Watch Your Dashboard
               </button>

app/(root)/[username]/error.tsx app/(root)/dashboard/error.tsxapp/(root)/[username]/error.tsx renamed to app/(root)/dashboard/error.tsx

@@ -40,8 +40,8 @@ type OptionState = 'idle' | 'loading' | 'success' | 'error';
 
 const PROFILE_URL = (username: string) =>
   typeof window !== 'undefined'
-    ? `${window.location.origin}/${username}`
-    : `https://commitpulse.vercel.app/${username}`;
+    ? `${window.location.origin}/dashboard/${username}`
+    : `https://commitpulse.vercel.app/dashboard/${username}`;
 
 export default function ShareSheet({ username, isOpen, onClose, exportData }: ShareSheetProps) {
   const [states, setStates] = useState<Record<string, OptionState>>({});