feat(dns): PiHole answers an explicit LAN name list, not a zone wildcard

Public names are proxied CNAMEs to the Cloudflare Tunnel since PR #156 and
work from the LAN, so they should resolve publicly there too. Replace the
address=/${BASE_DOMAIN}/ wildcard with explicit entries: the LAN-only names
(derived from every controller:none HTTPRoute), gitea/nextcloud (off
Cloudflare's 100 MB / 100 s limits), keycloak/auth, and the L4 VIPs.

Add L0 check pihole-lan-names, mutation-tested. Correct docs that still
described public names as CNAME to wan. and the cloudflared entrypoint comment.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

apps/wave-0/pihole.yaml

@@ -73,7 +73,7 @@ spec:
         - name: FTLCONF_dns_rateLimit_count
           value: '0'
         - name: FTLCONF_misc_dnsmasq_lines
-          value: local-ttl=60;address=/${BASE_DOMAIN}/${GATEWAY_VIP};address=/unifi.${BASE_DOMAIN}/${UNIFI_L4_VIP};address=/crafty-mc.${BASE_DOMAIN}/${CRAFTY_L4_VIP};address=/pihole-dns.${BASE_DOMAIN}/${PIHOLE_DNS_VIP};address=/plex-vip.${BASE_DOMAIN}/${PLEX_L4_VIP}
+          value: local-ttl=60;address=/gitea.${BASE_DOMAIN}/${GATEWAY_VIP};address=/nextcloud.${BASE_DOMAIN}/${GATEWAY_VIP};address=/keycloak.${BASE_DOMAIN}/${GATEWAY_VIP};address=/auth.${BASE_DOMAIN}/${GATEWAY_VIP};address=/headlamp.${BASE_DOMAIN}/${GATEWAY_VIP};address=/jackett.${BASE_DOMAIN}/${GATEWAY_VIP};address=/pihole.${BASE_DOMAIN}/${GATEWAY_VIP};address=/plex.${BASE_DOMAIN}/${GATEWAY_VIP};address=/qbittorrent.${BASE_DOMAIN}/${GATEWAY_VIP};address=/radarr.${BASE_DOMAIN}/${GATEWAY_VIP};address=/semaphore.${BASE_DOMAIN}/${GATEWAY_VIP};address=/sonarr.${BASE_DOMAIN}/${GATEWAY_VIP};address=/unifi.${BASE_DOMAIN}/${UNIFI_L4_VIP};address=/crafty-mc.${BASE_DOMAIN}/${CRAFTY_L4_VIP};address=/pihole-dns.${BASE_DOMAIN}/${PIHOLE_DNS_VIP};address=/plex-vip.${BASE_DOMAIN}/${PLEX_L4_VIP}
         - name: FTLCONF_webserver_api_password
           valueFrom:
             secretKeyRef: