Pi-hole swap: quadlet + env + records + Caddy vhost (retires dnsmasq)

- dankclaw/pihole/: pihole.container (quadlet, slirp4netns, 53+8083),
  env.example (ServerIP/TZ/DNS1/DNS2/WEBPASSWORD placeholders), addn-hosts
  (moved from dankclaw/dnsmasq/, + pihole.franksdank.cloud record)
- Caddyfile: pihole.franksdank.cloud vhost (family basicauth -> 8083)
- scripts/deploy-pihole-quadlet.sh: idempotent quadlet installer
- tests/pihole.bats replaces tests/dnsmasq.bats (same record validation
  + cross-checks, new quadlet/env seams); retired files in .AGENTTRASH/

dankclaw/pihole/addn-hosts

@@ -0,0 +1,40 @@
+# A records for the flat franksdank.name scheme (dnsmasq addn-hosts format:
+# <IP> <name> [<name> ...]). Served by the Pi-hole quadlet (FTL is a
+# dnsmasq fork): the quadlet mounts this file into /etc/dnsmasq.d/ read-only.
+#
+# Caddy is consolidated on dankclaw (192.168.0.143): it fronts every service
+# on both hosts, so every name resolves to that one IP. Keep in sync with the
+# Caddyfile (tests/pihole.bats cross-checks this).
+#
+#   192.168.0.143 = dankclaw (runs the Caddy container + the AI/dev stack)
+#   192.168.0.235 = dankserver (media stack; reached by Caddy via published
+#                    LAN ports — no DNS records point here)
+
+# --- Homepage + legacy name ---
+192.168.0.143 dankclaw.franksdank.cloud
+192.168.0.143 dankserver.franksdank.cloud
+
+# --- Media services (dankserver, proxied) ---
+192.168.0.143 plex.franksdank.cloud
+192.168.0.143 plex.franksdank.casa
+192.168.0.143 books.franksdank.cloud
+192.168.0.143 romm.franksdank.cloud
+192.168.0.143 files.franksdank.cloud
+192.168.0.143 jellyfin.franksdank.cloud
+192.168.0.143 radarr.franksdank.cloud
+192.168.0.143 sonarr.franksdank.cloud
+192.168.0.143 lidarr.franksdank.cloud
+192.168.0.143 readarr.franksdank.cloud
+192.168.0.143 prowlarr.franksdank.cloud
+192.168.0.143 qbittorrent.franksdank.cloud
+
+# --- AI / search / dev services (dankclaw, local) ---
+192.168.0.143 search.franksdank.cloud
+192.168.0.143 comfyui.franksdank.cloud
+192.168.0.143 chat.franksdank.cloud
+192.168.0.143 hermes.franksdank.cloud
+192.168.0.143 gitea.franksdank.cloud
+192.168.0.143 grafana.franksdank.cloud
+192.168.0.143 prometheus.franksdank.cloud
+192.168.0.143 loki.franksdank.cloud
+192.168.0.143 pihole.franksdank.cloud