FolderItem and AlbumItem each carried their own copy of the in-place
rename input (state, select-on-open effect, commit/cancel handling) and
the Confirm/Cancel pair for destructive actions. Both are now shared
components: InlineRename mounts fresh per rename (an external name
change mid-rename no longer clobbers typing), InlineConfirm is the
compact red/gray pair. The four copy-pasted nav rows collapse into a
local NavItem component.
LyAhn