Disable the global 2-col .content-layout grid on single pages (it was
tiling breadcrumb/article/author/related/comments left-right), add the
missing Zibll utility bridge used by the author/meta bar, and replace
nonstandard <name>/<item>/<badge> tags in the single surface.
Restore Zibll float dual-column shell, fix single settings DTO key mapping,
reorder article footer/actions, and match author bar, prev/next, title/body
typography, and limit-height expand UX.
Delete aksrt-compat.php and rewire messages/PM entry points to the user
center notification route. Normalize permissions login dependsOn objects
and allow an explicit empty captcha provider option so login/moderation
schema pages remain loadable without legacy compatibility shims.
kate522
