Reverse zones: other views' addresses aren't missing PTRs

A reverse zone's missing PTR count covers only its own view's A and
AAAA records. Addresses only other views' records use are counted apart
(ptr_other_views, 'Other views' in zone show, a note on the zone page)
and filled only when asked: fill-ptr --other-views, zone create
--fill --other-views, or the New reverse zone dialog's checkbox. This
keeps one view's host names out of another view's reverse zones.

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

docs/cli.md

@@ -179,6 +179,7 @@ jarl zone create 10.0.8.0/22                           # four zones, 8-11.0.10.i
 jarl zone create 10.0.10.100/32                        # a zone for just that address
 jarl zone create 10.0.10.0/24 --fill                   # in the view whose records use it, with their PTRs
 jarl zone fill-ptr 10.0.10.0/24                        # add the PTRs it lacks (zone commands take a network too)
+jarl zone fill-ptr 10.0.10.0/24 --view vps --other-views   # also name addresses only other views' records use
 jarl zone suggest-reverse [--create]                   # reverse zones your private views lack (--create: yours)
 jarl zone suggest-reverse --dismiss 185.199.108.153/32,185.199.109.153/32 --view internal   # not yours: don't suggest them again
 jarl zone suggest-reverse --all [--view V]             # every network without a reverse zone, also the hidden ones