feat: politki.de — KI & Politik landing, linked to tante.cc

Minimal onepager:
- Hero "politKI." (KI accented)
- Subtitle "KI & Politik."
- Single claim + CTA to tante.cc (Jürgen Geuter, KI-Kritik)
- Serif (EB Garamond) for gravitas, amber accent on near-black
- Distinct from freaki-Magenta vibe — this is the critique side

Caddyfile

@@ -279,6 +279,11 @@
         root * /srv/patentonkel.de
         file_server
     }
+    @politki_de host politki.de
+    handle @politki_de {
+        root * /srv/politki.de
+        file_server
+    }
     @schulfrai_de host schulfrai.de
     handle @schulfrai_de {
         root * /srv/schulfrai.de