feat(F-059): completed feature

project/apps/admin/src/app/(dashboard)/products/page.tsx

@@ -158,11 +158,13 @@ export default function ProductsPage() {
                     <td className="px-4 py-3.5">
                       <div className="flex items-center gap-3">
                         {p.images?.[0]?.url ? (
-                          <img
-                            src={p.images[0].url.replace('/uploads/', '/uploads/40/')}
-                            alt={p.name}
-                            className="w-10 h-10 rounded-lg object-cover bg-gray-100 flex-shrink-0"
-                          />
+                          <div className="w-10 h-14 rounded-lg bg-gray-100 flex items-center justify-center flex-shrink-0 overflow-hidden">
+                            <img
+                              src={p.images[0].url.replace('/uploads/', '/uploads/40/')}
+                              alt={p.name}
+                              className="max-w-full max-h-full w-auto h-auto object-contain"
+                            />
+                          </div>
                         ) : (
                           <div className="w-10 h-10 rounded-lg bg-gray-100 flex items-center justify-center text-lg flex-shrink-0">
                             🌿

project/apps/admin/src/app/api/upload/route.ts

@@ -16,6 +16,14 @@ const PEER_UPLOAD_DIRS = [
 
 /** Thumbnail widths pre-generated for lists (40px) and previews (200px). */
 const THUMBNAIL_WIDTHS = [40, 200];
+/**
+ * Maximum height ratio (h/w) for cached thumbnails. The thumbnail is scaled
+ * to fit inside a `width × width * MAX_HEIGHT_RATIO` bounding box without
+ * cropping. A non-square source produces a non-square thumbnail that preserves
+ * the original aspect ratio, so the frontend can render it with
+ * `object-contain` inside a matching box.
+ */
+const MAX_HEIGHT_RATIO = 1.4;
 
 async function mirrorToPeers(filePath: string): Promise<void> {
   await Promise.allSettled(
@@ -47,7 +55,10 @@ async function generateThumbnails(buffer: Buffer, filename: string): Promise<voi
       THUMBNAIL_WIDTHS.map(async (width) => {
         const thumbDir = path.join(dir, String(width));
         await mkdir(thumbDir, { recursive: true });
-        const resized = await sharp(buffer).resize({ width, withoutEnlargement: true }).toBuffer();
+        const maxHeight = Math.round(width * MAX_HEIGHT_RATIO);
+        const resized = await sharp(buffer)
+          .resize({ width, height: maxHeight, fit: 'inside', withoutEnlargement: true })
+          .toBuffer();
         await writeFile(path.join(thumbDir, filename), resized);
       }),
     ),

project/apps/admin/src/app/uploads/[...path]/route.ts

@@ -17,6 +17,14 @@ import path from 'node:path';
 export const dynamic = 'force-dynamic';
 
 const THUMB_SIZES: Readonly<Record<string, number>> = { '40': 40, '200': 200 };
+/**
+ * Maximum height ratio (h/w) for cached thumbnails. The thumbnail is scaled
+ * to fit inside a `width × width * MAX_HEIGHT_RATIO` bounding box without
+ * cropping, so a non-square source produces a non-square thumbnail that
+ * preserves the original aspect ratio. The frontend renders the result with
+ * `object-contain`.
+ */
+const MAX_HEIGHT_RATIO = 1.4;
 const SAFE_SEGMENT = /^[A-Za-z0-9._-]+$/;
 const CONTENT_TYPE_BY_EXTENSION: Readonly<Record<string, string>> = {
   '.jpg': 'image/jpeg',
@@ -54,7 +62,10 @@ async function findOriginal(filename: string): Promise<{ root: string; buffer: B
 async function buildThumbnail(source: Buffer, width: number): Promise<Buffer | null> {
   try {
     const { default: sharp } = await import('sharp');
-    return await sharp(source).resize({ width, withoutEnlargement: true }).toBuffer();
+    const maxHeight = Math.round(width * MAX_HEIGHT_RATIO);
+    return await sharp(source)
+      .resize({ width, height: maxHeight, fit: 'inside', withoutEnlargement: true })
+      .toBuffer();
   } catch {
     return null;
   }