Desktop: seller dashboard shell + gate carousel arrows to product gallery

- new store.$storeId.tsx layout: sticky admin sidebar (store/products/orders/
  financial/shipping/threads/settings) beside content at lg; mobile unchanged
- MyLayout: store/* gets a full-width desktop canvas (own sidebar), no shopper
  header/footer, mobile store-nav hidden at lg
- store home: hide the redundant mobile store header at lg
- ProductImageCarousel: prev/next arrows now opt-in (showArrows) so they only
  appear on the product gallery, not every masonry card

app/components/MyLayout.tsx

@@ -46,7 +46,10 @@ const MyLayout = React.memo(({ children }: { children: React.ReactNode }) => {
   // Auth pages get a full-width desktop canvas (so they can center their own
   // card) but no shopping header/footer.
   const isAuth = p === "/login" || p === "/logout";
-  const expandOnDesktop = isDesktopReady || isAuth;
+  // Seller dashboard: full-width canvas + its own sidebar (store.$storeId.tsx),
+  // no shopper header/footer.
+  const isStore = p.startsWith("/store/");
+  const expandOnDesktop = isDesktopReady || isAuth || isStore;
   const isThread = !!location.pathname.split("threads")[1];
 
   return (

app/components/product/ProductDetailView.tsx

@@ -338,6 +338,7 @@ export const ProductDetailView = memo(function ProductDetailView({
             borderRadius={0}
             isActive={productActiveStatus}
             controlsIsOn={true}
+            showArrows={true}
             onStatusChange={handleProductStatusChange}
             isChangeStatusDialogOpen={isChangeStatusDialogOpen}
             setIsChangeStatusDialogOpen={setIsChangeStatusDialogOpen}

app/components/product/ProductImageCarousel.tsx

@@ -46,6 +46,7 @@ interface ProductImageCarouselProps {
   isOwner?: boolean;
   isActive?: boolean;
   controlsIsOn?: boolean;
+  showArrows?: boolean;
   onStatusChange?: (newStatus: boolean) => void;
   isChangeStatusDialogOpen?: boolean;
   setIsChangeStatusDialogOpen?: (open: boolean) => void;
@@ -59,6 +60,7 @@ export const ProductImageCarousel = ({
   height,
   borderRadius,
   controlsIsOn = false,
+  showArrows = false,
   isOwner = false,
   isActive = true,
   onStatusChange,
@@ -276,8 +278,8 @@ export const ProductImageCarousel = ({
         </div>
       )}
 
-      {/* Prev / next arrows (desktop) */}
+      {/* Prev / next arrows (desktop, opt-in) */}
-      {images.length > 1 && (
+      {showArrows && images.length > 1 && (
         <>
           <button
             type="button"

app/routes/store.$storeId._index.tsx

@@ -105,7 +105,9 @@ export default function Store() {
 
   return (
     <div className="flex flex-col pb-20 static md:relative ">
-      <SellerDetailHeader sellerData={data} storeId={storeId} />
+      <div className="lg:hidden">
+        <SellerDetailHeader sellerData={data} storeId={storeId} />
+      </div>
       <div className="w-full">
         <div className="px-4">
           <div className="flex px-4 border rounded-[10px] w-full py-2">

app/routes/store.$storeId.tsx

@@ -0,0 +1,86 @@
+import { Link, Outlet, useLocation, useParams } from "@remix-run/react";
+import {
+  LayoutGrid,
+  Package,
+  ClipboardList,
+  Wallet,
+  Truck,
+  MessageCircle,
+  Settings,
+  ArrowRight,
+} from "lucide-react";
+import { useSellerData } from "~/requestHandler/use-seller-hooks";
+import SellerLogo from "~/components/SellerLogo";
+
+/**
+ * Desktop layout for the seller dashboard. Renders a sticky admin sidebar
+ * next to the page content at lg+; on mobile it's just the page content
+ * (the existing mobile dashboard, with its store-mode bottom nav, is unchanged).
+ */
+export default function StoreLayout() {
+  const { storeId } = useParams();
+  const location = useLocation();
+  const { data } = useSellerData(storeId);
+  const base = `/store/${storeId}`;
+
+  const NAV = [
+    { label: "فروشگاه", to: base, icon: LayoutGrid, exact: true },
+    { label: "محصولات", to: `${base}/products`, icon: Package },
+    { label: "سفارش‌ها", to: `${base}/orders`, icon: ClipboardList },
+    { label: "مالی", to: `${base}/financial-dashboard`, icon: Wallet },
+    { label: "روش ارسال", to: `${base}/shipping-method`, icon: Truck },
+    { label: "پیام‌ها", to: `${base}/threads`, icon: MessageCircle },
+    { label: "تنظیمات", to: `${base}/setting`, icon: Settings },
+  ];
+
+  const isActive = (item: { to: string; exact?: boolean }) =>
+    item.exact
+      ? location.pathname === item.to
+      : location.pathname.startsWith(item.to);
+
+  return (
+    <div className="lg:max-w-[1320px] lg:mx-auto lg:w-full lg:px-8 lg:py-8 lg:grid lg:grid-cols-[260px_1fr] lg:gap-7 lg:items-start">
+      {/* Desktop admin sidebar */}
+      <aside className="hidden lg:block lg:sticky lg:top-6 border border-WHITE3 rounded-2xl overflow-hidden">
+        <div className="p-4 border-b border-WHITE3 flex items-center gap-3">
+          <SellerLogo size="sm" src={data?.storeLogo} alt="store" />
+          <div className="min-w-0">
+            <p className="font-bold text-[15px] truncate">
+              {data?.storeName || "فروشگاه من"}
+            </p>
+            <p className="text-GRAY text-[12px]">پنل مدیریت</p>
+          </div>
+        </div>
+        <nav className="p-2.5 flex flex-col gap-0.5">
+          {NAV.map((n) => (
+            <Link
+              key={n.to}
+              to={n.to}
+              prefetch="intent"
+              className={`flex items-center gap-3 px-3.5 py-3 rounded-xl text-[14.5px] font-semibold transition-colors ${
+                isActive(n)
+                  ? "bg-BLACK text-white"
+                  : "text-BLACK2 hover:bg-WHITE2"
+              }`}
+            >
+              <n.icon size={20} />
+              {n.label}
+            </Link>
+          ))}
+          <Link
+            to="/"
+            className="flex items-center gap-3 px-3.5 py-3 rounded-xl text-[14.5px] font-semibold text-BLACK2 hover:bg-WHITE2 transition-colors"
+          >
+            <ArrowRight size={20} />
+            بازگشت به فروشگاه
+          </Link>
+        </nav>
+      </aside>
+
+      {/* Page content */}
+      <div className="min-w-0">
+        <Outlet />
+      </div>
+    </div>
+  );
+}