Reverse zone suggestions: yours and public, dismiss, per-view switch; child zones take their records

Suggestions split into networks that are yours (private IPv4 /24, ULA /48, an IPv6 /48 this server has an address in), which Create all creates, and public addresses (/32 or /128) to create only if they are yours or dismiss. A view can turn suggestions off, which also keeps it out of choosing a reverse zone's view (database version 13). A zone created inside another in the same view takes the parent's records under it; a delegation and its glue stay, a linked parent keeps them with a warning.

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

CHANGELOG.md

@@ -25,13 +25,23 @@ All notable changes to Jarl are documented here. The format follows
     --auto-ptr`, zone settings → Reverse DNS): adding, changing,
     disabling or deleting an A or AAAA record does the same to its PTR
     record, as the Update PTR box does for one change.
+  - Suggestions come in two groups: **yours** (private networks, a ULA or
+    an IPv6 /48 this server has an address in), which Create all
+    creates, and **public addresses**, each a /32 or /128 to create only
+    if it is yours (not a web host's) or **Dismiss**. A view can turn
+    suggestions off (`jarl view update vps --reverse-suggestions=false`),
+    e.g. one only a VPS uses.
+- A zone created inside another in the same view (a /24 inside a /8,
+  `lab.adbraun.lol` inside `adbraun.lol`) takes the parent's records
+  under it, which named would no longer serve from the parent; a
+  delegation and its glue stay.
 - Zone commands take a network for a reverse zone: `jarl zone show
   10.0.10.0/24`.
 
 ### Upgrading
 
-- The database gets a new version (12), applied when jarld starts; a
-  0.5 jarld can't open it afterwards, so take a backup first (`sudo
+- The database gets two new versions (12 and 13), applied when jarld
+  starts; a 0.5 jarld can't open it afterwards, so take a backup first (`sudo
   jarld backup`). Nothing changes until you turn `auto_ptr` on for a
   zone.