I suggest round corners

[glumidor]

Is your feature request related to a problem? Please describe.
not a problem, just a matter of taste. I'd like the photos shown with round corners.
perhaps as a setting like "square grid mode"

Describe the solution you'd like
in the nextcloud-data/custom_apps/memories/js/memories-main.js(.map):
add border-radius: 15px to .fill-block

Describe alternatives you've considered
patching it on my own every time memories or NC gets updated

Additional context

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