A central snapshot-equality guard in ensureDraftVersion now returns
the latest version unchanged when the candidate snapshot matches it,
so no-op admin saves no longer force visitors to re-consent. Per-
operation short-circuits in UpdateCookieBanner, UpdateCookieCategory,
UpdateCookiePattern, DeleteCookiePattern, MoveCookiePatternToCategory,
ReorderCookieCategory, and UpsertCookieBannerTranslation skip the row
update and version bump when nothing visitor-facing changes (excluded
patterns, identical values, identical translation JSON).
Rank is now treated as admin-only metadata: buildSnapshot sorts
categories by (Kind weight, ID byte order) instead of relying on the
implicit rank-driven slice order, and ReorderCookieCategory no longer
calls ensureDraftVersionForBanner. Default banners keep their
visitor-facing order (insertion order matches Kind+ID); banners with
admin-customised ranks see a one-time order shift to insertion order
on the next snapshot rebuild.
Reusable equality helpers (Ptr generic + JSON canonicalisation) move
to a new pkg/equal package; snapshotsEqual stays in service.go as the
documented chokepoint for visitor-identical snapshot comparison.
Signed-off-by: Émile Ré <emile@getprobo.com>
e21388fa0c