Description

When AI tagging is enabled on a folder with no images, the progress bar shows 0% indefinitely instead of displaying a meaningful message that the folder is empty.

Current Behavior

• User adds an empty folder (no images)
• User enables AI tagging
• Progress bar displays: 0 / 0 images (0%) and stays stuck at 0%
• No indication that the folder is actually empty

Expected Behavior

• System should detect empty folders
• Display a clear message: "No images found in this folder" or "This folder contains 0 images to process"
• Optionally disable AI tagging toggle with a warning

Root Cause

Backend API Issue: The tagging status endpoint returns identical responses for:

• Folders with 0% progress (actively processing)
• Folders with no images at all

{
  "folder_id": "xxx",
  "total_images": 0,
  "tagged_images": 0,
  "tagging_percentage": 0
}