Public Gallery and Moderation Flow

Moved gallery state from local storage to backend-managed data

Only approved submissions are shown in the site-wide public gallery

Gallery cards were tightened up and now show the author badge on the image

Image moderation now runs when a user submits a critique to the gallery

Submitting to gallery also saves the critique to favorites by default

Guests can browse the public gallery but cannot submit to it

Improved dark-theme visibility for native date pickers

Adjusted date field sizing so values no longer clip

Rebalanced the filter layout for narrower widths