Update image uploading to generate social media formats on demand

Remove eager transformations from Cloudinary uploads and generate transformation URLs manually using `cloudinary.url` with `lpad` crop, enabling dynamic image resizing for different social media platforms.

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/74fmQLN

server/services/cloudinary.ts

@@ -31,22 +31,13 @@ class CloudinaryService {
 
     const isVideo = mimeType.startsWith('video/');
 
-    // Define eager transformations for images (generated during upload)
-    const eagerTransformations = !isVideo ? [
-      { width: 1200, height: 630, crop: 'pad', gravity: 'center', background: 'black' },      // Facebook Feed
-      { width: 1080, height: 1080, crop: 'pad', gravity: 'center', background: 'black' },     // Instagram Feed
-      { width: 1080, height: 1920, crop: 'pad', gravity: 'center', background: 'black' }      // Instagram Story
-    ] : undefined;
-
-    // Upload to Cloudinary with eager transformations
+    // Upload to Cloudinary (without 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);
@@ -60,15 +51,39 @@ class CloudinaryService {
     const publicId = uploadResult.public_id;
     const originalUrl = uploadResult.secure_url;
 
-    // Extract eager transformation URLs (generated by Cloudinary during upload)
+    // Generate transformation URLs manually with lpad (limit pad) for images
     let facebookFeedUrl = null;
     let instagramFeedUrl = null;
     let instagramStoryUrl = null;
 
-    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)
+    if (!isVideo) {
+      // Use lpad (limit pad) - only scales down if needed, adds padding to fit dimensions
+      facebookFeedUrl = cloudinary.url(publicId, {
+        width: 1200,
+        height: 630,
+        crop: 'lpad',
+        background: 'black',
+        fetch_format: 'auto',
+        quality: 'auto'
+      });
+      
+      instagramFeedUrl = cloudinary.url(publicId, {
+        width: 1080,
+        height: 1080,
+        crop: 'lpad',
+        background: 'black',
+        fetch_format: 'auto',
+        quality: 'auto'
+      });
+      
+      instagramStoryUrl = cloudinary.url(publicId, {
+        width: 1080,
+        height: 1920,
+        crop: 'lpad',
+        background: 'black',
+        fetch_format: 'auto',
+        quality: 'auto'
+      });
     }
 
     return {