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>

docs/reverse.md

@@ -147,9 +147,19 @@ zone show` shows how many as `Missing PTRs`; the API lists them in
 `ptr_missing_list`. Only the zone's own view's records count: an address
 that only another view's records use isn't missing (say internal's
 `claude.adbraun.lol` and the vps view's copy of `10.0.10.in-addr.arpa`).
-Those are shown apart, as `Other views` in `jarl zone show`
-(`ptr_other_views` in the API) and a quiet note with a **Name them from
-there** button on the page; filling never adds them unasked.
+Those are listed apart, with the name each would get: `Other views` in
+`jarl zone show`, `ptr_other_views` and `ptr_other_views_list` in the
+API, and a quiet note on the page with an **Add PTR records for them in
+view vps** button. Filling never adds them unasked. `jarl zone show`
+lists the missing ones too:
+
+```
+Missing PTRs:  1 (addresses the view's records use here; add them: jarl zone fill-ptr 10.0.10.0/24)
+                 10.0.10.7 -> printer.adbraun.lol
+Other views:   2 addresses with A or AAAA records only in view internal, so not missing here (add PTRs for them in this view too: jarl zone fill-ptr 10.0.10.0/24 --other-views)
+                 10.0.10.26 -> gomft.adbraun.lol (view internal)
+                 10.0.10.101 -> claude.adbraun.lol (view internal)
+```
 
 ## Keeping PTR records in step