feat(home): seller brand chip (logo + name) on product tiles

Show the seller's brand on the home product cards, like the design:
a small logo circle + name overlaid above the title.

- new SellerChip component: renders nothing without a name; falls back to
  the seller's initial when no logo is present (e.g. before the backend
  ships seller_logo). seller_name is already returned today, so the name
  shows immediately.
- thread sellerName/sellerLogo/sellerUsername through ProductHomepage type,
  the home discounts + for-you mappings, and the MondrianProductList /
  HorizontalProductList card interfaces + overlays.

Only renders where seller data is mapped (home), so seller-page and
store-dashboard tiles are unaffected.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

app/components/HorizontalProductList.tsx

@@ -6,6 +6,7 @@ import { Skeleton } from "./ui/skeleton";
 import { ErrorState } from "./UiProvider";
 import discountRed from "~/assets/icons/product/discount-red.svg";
 import placeholderImage from "~/assets/icons/product.png";
+import SellerChip from "./SellerChip";
 
 interface HorizontalProduct {
   id?: string;
@@ -14,6 +15,9 @@ interface HorizontalProduct {
   discountPercent?: number;
   discountPrice?: number;
   basePrice?: number;
+  sellerName?: string;
+  sellerLogo?: string | null;
+  sellerUsername?: string;
 }
 
 const HorizontalProductList = ({
@@ -138,6 +142,10 @@ const HorizontalProductList = ({
                   )}
                   {/* Overlay info */}
                   <div className="absolute bottom-0 left-0 right-0 bg-gradient-to-t from-black/70 via-black/40 to-transparent p-2 pt-6 pointer-events-none">
+                    <SellerChip
+                      name={product.sellerName}
+                      logo={product.sellerLogo}
+                    />
                     <div className="flex w-full justify-between gap-1">
                       {/* Title */}
                       <h3 className="text-white text-xs font-semibold line-clamp-1 mb-0.5">

app/components/MondrianProductList.tsx

@@ -11,6 +11,7 @@ import placeholderImage from "~/assets/icons/product.png";
 import placeholderImageDark from "~/assets/icons/product-dark.png";
 import { useRootData } from "~/hooks/use-root-data";
 import discountRed from "~/assets/icons/product/discount-red.svg";
+import SellerChip from "./SellerChip";
 
 interface MondrianList {
   id?: string;
@@ -21,6 +22,9 @@ interface MondrianList {
   discountPercent?: number;
   discountPrice?: number;
   basePrice?: number;
+  sellerName?: string;
+  sellerLogo?: string | null;
+  sellerUsername?: string;
 }
 
 // Utility function to detect media type
@@ -400,6 +404,7 @@ const ProductCard = ({
           )}
           {/* Overlay info - Airbnb style */}
           <div className="absolute bottom-0 left-0 right-0 bg-gradient-to-t from-black/70 via-black/40 to-transparent p-2 pt-6 pointer-events-none">
+            <SellerChip name={product.sellerName} logo={product.sellerLogo} />
             <div className="flex w-full justify-between gap-1">
               {/* Title */}
               <h3 className="text-white text-xs font-semibold line-clamp-1 mb-0.5">

app/components/SellerChip.tsx

@@ -0,0 +1,32 @@
+interface SellerChipProps {
+  name?: string;
+  logo?: string | null;
+}
+
+/**
+ * Small brand chip (logo + name) shown over a product card's image overlay.
+ * Renders nothing when there's no seller name. Falls back to the seller's
+ * initial when no logo is available (e.g. before the backend exposes it).
+ */
+export default function SellerChip({ name, logo }: SellerChipProps) {
+  if (!name) return null;
+  return (
+    <div className="flex items-center gap-1.5 mb-1 min-w-0">
+      <span className="w-[15px] h-[15px] rounded-full overflow-hidden border border-white/40 bg-white/20 shrink-0 grid place-items-center text-[8px] font-bold text-white">
+        {logo ? (
+          <img
+            src={logo}
+            alt=""
+            className="w-full h-full object-cover"
+            onError={(e) => {
+              e.currentTarget.style.display = "none";
+            }}
+          />
+        ) : (
+          name.trim().charAt(0)
+        )}
+      </span>
+      <span className="text-white/85 text-[10.5px] truncate">{name}</span>
+    </div>
+  );
+}

app/routes/_index.tsx

@@ -151,6 +151,9 @@ export default function HomePage() {
                   discountPercent: product?.discountPercent || 0,
                   discountPrice: product?.discountPrice || 0,
                   basePrice: product?.basePrice || 0,
+                  sellerName: product?.sellerName,
+                  sellerLogo: product?.sellerLogo,
+                  sellerUsername: product?.sellerUsername,
                 })) || []
               }
               isLoading={isLoadingDiscounts}
@@ -235,6 +238,9 @@ export default function HomePage() {
                   discountPercent: product?.discountPercent || 0,
                   discountPrice: product?.discountPrice || 0,
                   basePrice: product?.basePrice || 0,
+                  sellerName: product?.sellerName,
+                  sellerLogo: product?.sellerLogo,
+                  sellerUsername: product?.sellerUsername,
                 })) || []
               }
               fetchNextPage={fetchNextForYou}

src/api/types/models/index.ts

@@ -3813,6 +3813,18 @@ export interface ProductHomepage {
      * @memberof ProductHomepage
      */
     readonly sellerName?: string;
+    /**
+     *
+     * @type {string}
+     * @memberof ProductHomepage
+     */
+    readonly sellerUsername?: string;
+    /**
+     *
+     * @type {string}
+     * @memberof ProductHomepage
+     */
+    readonly sellerLogo?: string | null;
 }
 /**
  *