Fixes issue where image was too small to see full item in modal canvas.
Changes:
- Calculate initial zoom to fit entire image in 800x600 canvas
- Don't zoom in (only zoom out to fit), preserving image clarity
- Reset button also resets to fit zoom instead of always 1.0
This ensures users can see the full item from the start and understand
what they're adjusting.
Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
Daniel Bedeleanu
97629decb1