Remove debug on production

Release Notes (v1.1.1)
What's New in this Version:
Improved Overlay Trigger Logic

The thumbnail download overlay is now smarter. Hovering over video title links (#video-title) is now ignored to prevent accidental triggers and avoid cluttering the interface while browsing.
Fixed Layout Shifting on Hover

Resolved a layout bug where video elements or thumbnails would shifts down by 6-8px when the overlay wrapper was rendered. The positioning container is now fully absolute to ensure zero impact on the native YouTube page layout.

Improved UI feedback: download/copy buttons give visual cues when clicked
Fixed issue where buttons sometimes pointed to the wrong thumbnail on channel tabs (like "Popular")
Refactored code for better stability and cleaner logic
Updated manifest and permissions for Manifest V3 compatibility

Let us know if you have feature ideas or run into bugs!