feat: add full Zonemaster stack with Docker and Spanish UI

- Clone all 5 Zonemaster component repos (LDNS, Engine, CLI, Backend, GUI)
- Dockerfile.backend: 8-stage multi-stage build LDNS→Engine→CLI→Backend
- Dockerfile.gui: Astro static build served via nginx
- docker-compose.yml: backend (internal) + frontend (port 5353)
- nginx.conf: root redirects to /es/, /api/ proxied to backend
- zonemaster-gui/config.ts: defaultLanguage set to 'es' (Spanish)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

zonemaster/docs/internal/functional-tests/Behavior-TP/behavior05.md

@@ -0,0 +1,41 @@
+## BEHAVIOR05: Capable of running the test when the delegation parameters are specified
+
+### Test case identifier
+
+**BEHAVIOR05:** Capable of running the test when the delegation parameters are specified
+
+### Objective 
+This test is to verify whether the engine is capable of running an undelegated
+test
+
+### Inputs
+
+The domain to be tested with NS and IP addresses. It could be either a delegated
+or un delegated domain
+
+### Ordered description of steps to be taken to execute the test case
+
+1. A valid domain is verified using Zonemaster CLI with appropriate options as
+seen in the appendix
+2. If the query don’t receive a CRITICAL or ERROR notice, the test returns PASS
+
+
+### Results
+As viewed in the appendix, the engine is capable of testing un delegated
+domains.
+
+### Appendix
+```
+zonemaster-cli iis.se  --ns i.ns.se/194.146.106.22 --ns
+i.ns.se/2001:67c:1010:5::53 --ns ns.nic.se/212.247.7.228 --ns
+ns.nic.se/2a00:801:f0:53::53 --ns ns3.nic.se/212.247.8.152 --ns
+ns3.nic.se/2a00:801:f0:211::152  IISIIS
+Seconds Level     Message
+======= ========= =======
+   6.20 WARNING   Nameserver ns3.nic.se has an IP address (212.247.8.152)
+without PTR configured.
+  10.45 NOTICE    192.36.144.107 returned no DS records for iis.se.
+  11.51 NOTICE    SOA 'refresh' value (10800) is less than the recommended one
+(14400).
+
+```