Update image display to support multiple sizes and background colors

Configure Cloudinary service to generate multiple image transformations (Facebook Feed, Instagram Feed, Instagram Story) upon upload and update frontend to use these generated URLs, adjusting CSS from `object-contain` to `object-cover` for proper display.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: ae4037a0-2a6f-4530-9bac-79b543286bda
Replit-Commit-Checkpoint-Type: intermediate_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/397bca8c-984f-43ff-841a-10897aeb8140/ae4037a0-2a6f-4530-9bac-79b543286bda/nGcGXQw

.replit

@@ -26,6 +26,10 @@ externalPort = 3000
 localPort = 43245
 externalPort = 3001
 
+[[ports]]
+localPort = 44783
+externalPort = 3003
+
 [env]
 PORT = "5000"
 

client/src/components/media-upload.tsx

@@ -167,7 +167,7 @@ export default function MediaUpload() {
                     <img
                       src={selectedFile.facebookFeedUrl}
                       alt="Facebook preview"
-                      className="w-full h-full object-contain bg-black"
+                      className="w-full h-full object-cover"
                     />
                   ) : (
                     <div className="w-full h-full flex items-center justify-center">
@@ -191,7 +191,7 @@ export default function MediaUpload() {
                     <img
                       src={selectedFile.instagramFeedUrl}
                       alt="Instagram feed preview"
-                      className="w-full h-full object-contain bg-black"
+                      className="w-full h-full object-cover"
                     />
                   ) : (
                     <div className="w-full h-full flex items-center justify-center">
@@ -215,7 +215,7 @@ export default function MediaUpload() {
                     <img
                       src={selectedFile.instagramStoryUrl}
                       alt="Instagram story preview"
-                      className="w-full h-full object-contain bg-black"
+                      className="w-full h-full object-cover"
                     />
                   ) : (
                     <div className="w-full h-full flex items-center justify-center">

server/services/cloudinary.ts

@@ -31,13 +31,22 @@ class CloudinaryService {
 
     const isVideo = mimeType.startsWith('video/');
 
-    // Upload to Cloudinary (without eager transformations)
+    // Define eager transformations for images (generated during upload)
+    const eagerTransformations = !isVideo ? [
+      { width: 1200, height: 630, crop: 'pad', gravity: 'center', background: 'auto' },      // Facebook Feed
+      { width: 1080, height: 1080, crop: 'pad', gravity: 'center', background: 'auto' },     // Instagram Feed
+      { width: 1080, height: 1920, crop: 'pad', gravity: 'center', background: 'auto' }      // Instagram Story
+    ] : undefined;
+
+    // Upload to Cloudinary with eager transformations
     const uploadResult = await new Promise<any>((resolve, reject) => {
       const uploadStream = cloudinary.uploader.upload_stream(
         {
           folder: 'social-flow',
           public_id: `${Date.now()}-${fileName.replace(/\.[^/.]+$/, '')}`,
           resource_type: isVideo ? 'video' : 'image',
+          eager: eagerTransformations,
+          eager_async: false, // Generate transformations immediately
         },
         (error, result) => {
           if (error) reject(error);
@@ -51,17 +60,15 @@ class CloudinaryService {
     const publicId = uploadResult.public_id;
     const originalUrl = uploadResult.secure_url;
 
-    // For now, use the original URL for all formats - no transformations
-    // The frontend will handle display with CSS to prevent cropping
+    // Extract eager transformation URLs (generated by Cloudinary during upload)
     let facebookFeedUrl = null;
     let instagramFeedUrl = null;
     let instagramStoryUrl = null;
 
-    if (!isVideo) {
-      // Use original image for all formats - NO CROPPING
-      facebookFeedUrl = originalUrl;
-      instagramFeedUrl = originalUrl;
-      instagramStoryUrl = originalUrl;
+    if (!isVideo && uploadResult.eager && uploadResult.eager.length === 3) {
+      facebookFeedUrl = uploadResult.eager[0].secure_url;      // Facebook Feed (1200x630)
+      instagramFeedUrl = uploadResult.eager[1].secure_url;     // Instagram Feed (1080x1080)
+      instagramStoryUrl = uploadResult.eager[2].secure_url;    // Instagram Story (1080x1920)
     }
 
     return {