feat: implement dashboard page and add loading skeletons for all dashboard modules

src/app/(dashboard)/settings/loading.tsx

@@ -0,0 +1,17 @@
+export default function SettingsLoading() {
+    return (
+        <div className="flex flex-col gap-6 animate-pulse max-w-2xl">
+            {/* Header */}
+            <div className="h-7 w-40 rounded-lg bg-[var(--bg-elevated)]" />
+
+            {/* Settings sections */}
+            {Array.from({ length: 3 }).map((_, i) => (
+                <div key={i} className="rounded-2xl border border-[var(--border)] overflow-hidden bg-[var(--bg-elevated)] p-6 flex flex-col gap-4">
+                    <div className="h-5 w-36 rounded bg-[var(--border)]" />
+                    <div className="h-10 rounded-lg bg-[var(--bg-base)]" />
+                    <div className="h-10 rounded-lg bg-[var(--bg-base)]" />
+                </div>
+            ))}
+        </div>
+    );
+}