diff --git a/HANDOFF.md b/HANDOFF.md
index d79d9ee..fab3946 100644
--- a/HANDOFF.md
+++ b/HANDOFF.md
@@ -26,7 +26,31 @@ Latest TypeScript verification after the validation/upload changes:
 npx tsc --noEmit
 ```
 
-## Latest Codex Changes After `2cfff02`
+## Latest Codex Changes After `4e28ccd`
+
+### Admin review image dedupe
+
+File:
+- `src/app/admin/review/[productId]/page.tsx`
+
+Behavior:
+- Admin product review now deduplicates product images before rendering.
+- The dedupe applies to both:
+  - update compare section (`Gambar Produk`)
+  - normal admin review gallery (`Galeri`)
+- Root `imageId` / `image` and entries inside `productImages` are merged and sorted by `sequence`.
+- Duplicate images are removed by `imageId`, with URL as a fallback key.
+- This prevents the main image from appearing twice when backend sends it both as root `imageId` and inside `productImages`.
+
+Verification:
+
+```bash
+npm run build
+```
+
+The local production server was restarted on `http://localhost:3000` for manual admin review testing.
+
+## Previous Codex Changes After `2cfff02`
 
 ### Product edit image payload preservation
 
diff --git a/src/app/admin/review/[productId]/page.tsx b/src/app/admin/review/[productId]/page.tsx
index 5e5f1bd..8b0b0c3 100644
--- a/src/app/admin/review/[productId]/page.tsx
+++ b/src/app/admin/review/[productId]/page.tsx
@@ -166,6 +166,32 @@ function hasChangesForPaths(rows: CompareRow[], paths: string[]) {
   });
 }
 
+function getProductImageRefs(product: ReviewProductData | null) {
+  if (!product) return [];
+
+  const refs = [
+    ...(product.imageId || product.image
+      ? [{ id: product.imageId || "", url: imgUrl(product.imageId, product.image) || "" }]
+      : []),
+    ...(Array.isArray(product.productImages)
+      ? [...product.productImages]
+          .sort((a, b) => (a.sequence ?? 0) - (b.sequence ?? 0))
+          .map((item) => ({
+            id: item.imageId || "",
+            url: imgUrl(item.imageId, item.image) || "",
+          }))
+      : []),
+  ];
+
+  const seen = new Set<string>();
+  return refs.filter((item) => {
+    const key = item.id || item.url;
+    if (!key || seen.has(key)) return false;
+    seen.add(key);
+    return true;
+  });
+}
+
 function ModelCard({
   model,
   index,
@@ -559,7 +585,6 @@ function ProductColumn({
   );
 
   const models = Array.isArray(product.productModels) ? product.productModels : [];
-  const images = Array.isArray(product.productImages) ? product.productImages : [];
   const features = Array.isArray(product.productFeatures) ? product.productFeatures : [];
   const keywords = Array.isArray(product.productKeyWords) ? product.productKeyWords : [];
   const productInfos = Array.isArray(product.productInformations)
@@ -571,21 +596,7 @@ function ProductColumn({
   const productFiles = Array.isArray(product.productFiles)
     ? product.productFiles.filter((item) => item.file || item.fileId || item.id)
     : [];
-  const allImages = [
-    ...(product.imageId || product.image
-      ? [{ id: product.imageId, url: imgUrl(product.imageId, product.image) }]
-      : []),
-    ...images
-      .sort(
-        (a: { sequence?: number }, b: { sequence?: number }) =>
-          (a.sequence ?? 0) - (b.sequence ?? 0)
-      )
-      .map((img: { imageId?: string; image?: string }) => ({
-        id: img.imageId,
-        url: imgUrl(img.imageId, img.image),
-      }))
-      .filter((img) => Boolean(img.url)),
-  ];
+  const allImages = getProductImageRefs(product);
 
   const shouldRender = (key: CompareSectionKey) => !section || section === key;
 
@@ -951,17 +962,7 @@ function AdminReviewDetailPageInner() {
   const categoryInfos = Array.isArray(product.categoryInformations)
     ? product.categoryInformations.filter((item) => item.paramName && item.paramValue)
     : [];
-  const allImages = [
-    ...(product.imageId || product.image
-      ? [{ id: product.imageId, url: imgUrl(product.imageId, product.image) }]
-      : []),
-    ...(Array.isArray(product.productImages)
-      ? product.productImages
-          .sort((a, b) => (a.sequence ?? 0) - (b.sequence ?? 0))
-          .map((item) => ({ id: item.imageId || "", url: imgUrl(item.imageId, item.image) || "" }))
-          .filter((item) => Boolean(item.url))
-      : []),
-  ];
+  const allImages = getProductImageRefs(product);
 
   // ── Reject modal ────────────────────────────────────────────────────────