An entry of a registry type with References saved without a reference
passed the dependent recheck (null is always among the options), then
resolved to nothing and vanished from the public tree with its children.
The admin save now refuses it (errors.reference_required).
- The admin refuses a parent from another menu than the one the form
names (errors.parent_menu) instead of moving the entry to the parent's
menu without a word; BeforeSave records the named menu
(MenuEntry.RequestedMenuID).
- An entry moved to another menu moves its descendants in the same
transaction, so the public tree no longer drops them.
- golem15.menu plugin, tables golem15_menu_menus and golem15_menu_menu_entries with the PHP columns plus a nullable url_pattern (D-02)
- MenuEntry BeforeSave ports PHP beforeSave: nest columns 0, menu from the parent, sort_order after the menu's last
- entry type dropdown: url, divider and the signpost registry types; reference depends on type through signpost.ReferenceOptions
- URL scheme allowlist (errors.url_scheme), target _self or _blank, menu and parent cycle checks
- menu filter, toolbar reorder/create/delete and config_reorder.yaml partitioned by menu
- navigation Menus with Menus and Menu entries, permission golem15.menu.manage_menu, en and pl phrasebooks
- TestMenuAdminSmoke
