Precise Watermark Positioning and Real-Time Preview#2964

I have two suggestions to improve the watermark feature:

Pixel-Perfect Margins: Currently, positioning watermarks can be imprecise. It would be highly beneficial if we could set the margins with pixel-level accuracy. For example, allowing users to enter exact values like “25 pixels from the left” and “50 pixels from the bottom”.

Real-Time Preview: The watermark should be visible directly within the image/video preview window. This would allow us to see instantly if the watermark sits in the correct position before publishing or scheduling the post.