website: a tester recruitment page, and test terms 1.1 (the domain)

New page pair /teszteles + /en/testing: who the closed test is for, what a
tester needs (machine + internet quoted verbatim from the FAQ, plus a domain),
what they get (terms section 3, nothing new), what we ask for, and how many
places there are. Every "Jelentkezem tesztelonek" button now goes there.

Operator rulings 2026-10-10, recorded in CONTEXT.md:
  D1 - the tester's domain is in the TESTER'S OWN name; Felhom pays its fee for
       two years and the tester keeps it when the test ends or they leave; DNS
       is managed with a token scoped to that one zone only.
  D2 - the closed test runs with at most 5 households.

Terms 1.1 adds section 4 (the domain) with the D1 text; old sections 4-11 are
renumbered 5-12 and nothing else changed. Section 11 promises the testers an
e-mail before a change, so one is drafted for the operator to send.

Registered in site_gates.py TWINS/URL and listed in sitemap.xml.

website/sitemap.xml

@@ -112,6 +112,22 @@
     <changefreq>monthly</changefreq>
     <priority>0.3</priority>
   </url>
+  <url>
+    <loc>https://felhom.eu/teszteles</loc>
+    <xhtml:link rel="alternate" hreflang="hu" href="https://felhom.eu/teszteles"/>
+    <xhtml:link rel="alternate" hreflang="en" href="https://felhom.eu/en/testing"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://felhom.eu/teszteles"/>
+    <changefreq>monthly</changefreq>
+    <priority>0.9</priority>
+  </url>
+  <url>
+    <loc>https://felhom.eu/en/testing</loc>
+    <xhtml:link rel="alternate" hreflang="hu" href="https://felhom.eu/teszteles"/>
+    <xhtml:link rel="alternate" hreflang="en" href="https://felhom.eu/en/testing"/>
+    <xhtml:link rel="alternate" hreflang="x-default" href="https://felhom.eu/teszteles"/>
+    <changefreq>monthly</changefreq>
+    <priority>0.5</priority>
+  </url>
   <url>
     <loc>https://felhom.eu/adatkezeles</loc>
     <xhtml:link rel="alternate" hreflang="hu" href="https://felhom.eu/adatkezeles"/>