Fixed multipart form data file upload handling:

• Duplicate-key uploads (e.g., attachments[]) now retain each file's original name instead of all sharing the same filename
• MIME type detection now uses the filename instead of the field name

Added Debug Request input back to all actions for user-configurable request logging

Removed the Debug Request input from all action inputs. Debug logging is now controlled internally and no longer appears as a configurable field in actions.

Added input Max Redirects to all actions for controlling automatic redirect following behavior

Added connection type Custom API Key for custom header authentication