Reverse zones: list other views' addresses, clearer wording

The zone page and jarl zone show list the addresses only other views'
records use (ptr_other_views_list), with the name each would get and the
view it comes from, and say plainly that they aren't missing here. The
page's button reads 'Add PTR records for them in view X'. zone show
lists the missing PTRs too.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/api/types.go

@@ -50,8 +50,10 @@ type Zone struct {
 	PTRMissingList []PTRFill `json:"ptr_missing_list,omitempty"`
 	// PTROtherViews counts the addresses in it, without a PTR record,
 	// that only other views' records use: not missing, but fill-ptr with
-	// other_views=1 can name them from there.
-	PTROtherViews int `json:"ptr_other_views,omitempty"`
+	// other_views=1 adds them, naming them from there. PTROtherViewsList
+	// are the first 25 (From says which view).
+	PTROtherViews     int       `json:"ptr_other_views,omitempty"`
+	PTROtherViewsList []PTRFill `json:"ptr_other_views_list,omitempty"`
 	// Pending is set when listing with a changeset: add, change or delete.
 	Pending string `json:"pending,omitempty"`
 }