TP23 Stufe 2: AGH-Paar als DNS-Resolver + DHCP auf emsenhuber.net

- adguard/AdGuardHome.yaml: AGH-Wizard-Setup (27 Rewrites ohne .bf, DoH zum CF-Gateway, conditional emsenhuber.net).
- nautobot/mikrotik_routeros.j2: DHCP dns-server=10.40.20.36,.37, domain=emsenhuber.net.
- docs/transaktionen/TP23-agh-firewall.commands.rsc: TP5-E2 LAN->AGH dns auf .16/.17 ersetzt durch .36/.37.
- docs/transaktionen/TP23-agh-dhcp-cutover.commands.rsc: DHCP-Cutover (dns-server + domain in einem Deploy).

Compliance 104/104, 0 Drifts. Core bleibt als Rückfallebene unangetastet.

[KEIN go fuer den Rest: Persistenz (CLAUDE.md/memory), Host.Naming (.host.emsenhuber.net),
add-dns-entries-Suffix, conditional-Upstream, lease-time-Transaktion, TP31-defer — alles im Plan,
Wartet auf separates go des Users.]

nautobot/mikrotik_routeros.j2

@@ -127,7 +127,7 @@
 /ip dhcp-server add address-pool=pool-v{{ v.id }} comment={{ v.name }} interface=vlan{{ v.id }} lease-time={{ v.lease }} name=dhcp-v{{ v.id }}
 {% endfor %}
 {% for v in vlans %}
-/ip dhcp-server network add address=10.40.{{ v.id }}.0/24 dns-server=10.40.{{ v.id }}.1 domain=bf.lan gateway=10.40.{{ v.id }}.1 ntp-server=10.40.{{ v.id }}.1
+/ip dhcp-server network add address=10.40.{{ v.id }}.0/24 dns-server=10.40.20.36,10.40.20.37 domain=emsenhuber.net gateway=10.40.{{ v.id }}.1 ntp-server=10.40.{{ v.id }}.1
 {% endfor %}
 /ip dhcp-server option add code=6 name="dns 1.1.1.1" value=0x01010101