Stable twin of #1153.
Everything in the system treats a hidden row as absent, but the per-viewer is_liked heart read the row without looking at is_hidden — so a like the photographer had hidden still showed as liked on a photo whose like_count was zero.
Making that agree exposes the second half: the duplicate check behind like/favorite toggling did not skip hidden rows either, so the now-empty heart, when clicked, found the hidden row and toggled it OFF. Skipping hidden rows there makes the click create a fresh, visible row.
Also carried from review: the per-guest caps, /my-feedback and getEventFeedbackSummary no longer count hidden rows, and unhiding collapses the guest's replacement — skipped when there is no stable identity, since that fallback was 'guest_identifier IS NULL', i.e. other visitors' rows.
Not carried: the my_color_label badge (colour labels are #1044) and the clearScope / singleValueScope visibility fix, neither of which exists on this branch.
Merged with admin privileges: the author cannot self-approve.
Paul Nothaft
b62cd2c290