improved image handling

backend/src/app.ts

@@ -2763,27 +2763,11 @@ app.get('/api/birds/:birdId/photo', async (req: Request, res: Response, next: Ne
     const signedUrl = getSignedS3ObjectUrl({
       config: s3Config,
       objectKey: bird.photo_object_key,
-      expiresInSeconds: 60,
+      expiresInSeconds: 5 * 60,
     });
-    const imageResponse = await fetch(signedUrl);
 
-    if (!imageResponse.ok) {
-      res.status(imageResponse.status).json({ error: 'Unable to load bird photo.' });
-      return;
-    }
-
-    const contentType = imageResponse.headers.get('content-type') || bird.photo_content_type || 'application/octet-stream';
-    const contentLength = imageResponse.headers.get('content-length');
-    const imageBuffer = Buffer.from(await imageResponse.arrayBuffer());
-
-    res.setHeader('Content-Type', contentType);
     res.setHeader('Cache-Control', 'private, max-age=300');
-
-    if (contentLength) {
-      res.setHeader('Content-Length', contentLength);
-    }
-
-    res.send(imageBuffer);
+    res.redirect(302, signedUrl);
   } catch (error) {
     next(error);
   }