Improved ZIP/Batch support

We’ve rolled out an improvement to our file conversion system, it now has better handling of batches of files and ZIPs , ensuring every file inside gets processed, no matter how many layers deep it’s hidden.

Key improvements include:

• Recursive ZIP extraction with safety limits. Even with nested ZIPs.
• Unified error handling that clearly separates unsupported files from actual conversion failures.
• Improved batch conversion UX; see all results in one place:
  • Successful files
  • Failed files
  • Unsupported files

This means you’ll always know exactly what worked and what didn’t, even in complex ZIP uploads. Plus, we’ve fixed several edge cases like sidecar file detection and error message clarity.