Make file uploads asynchronous to prevent blocking other requests

[davedumto]

Problem

File uploads are synchronous and block other requests:

receiptUrl = await uploadToCloudinary(file);

This causes:

• Request blocking during file processing
• Poor performance for other users
• Timeout issues with large files
• Resource contention

Impact

• Slow response times for all users during uploads
• Potential request timeouts
• Poor user experience
• Resource blocking

Solution

Implement asynchronous file upload processing:

• Queue file uploads for background processing
• Return immediate response to user
• Process files asynchronously
• Add upload status tracking

Files to modify

• src/app/api/orders/route.ts

Acceptance Criteria

• Implement asynchronous file upload queue
• Return immediate response to user
• Add upload status tracking
• Background file processing
• Upload progress notifications
• Error handling for failed uploads