Build Hüfner Gartenbau as a ninth installation, let buttons call and write, colour the button arrow like its text

- Website of Garten- und Landschaftsbau Hüfner GmbH rebuilt from the delivered design with
  imprint, privacy, 404 and the enquiry form (scripts/reset-huefner.sh, ports 8102/8103),
  Barlow and Barlow Condensed served locally with their licence.
- Buttons, icon cards, calls to action, icons and linked images accept tel: and mailto:
  links, the same targets menus and rich text already allowed (ADR 107).
- The arrow inside a button takes the button's text colour instead of the accent colour.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

scripts/reset-huefner.sh

@@ -0,0 +1,26 @@
+#!/bin/sh
+# Wirft die Hüfner-Installation weg und baut sie neu auf. Nur fuer den Aufbau gedacht.
+# Erstes Argument: der entpackte Entwurf (Ordner mit index.html und images/).
+set -e
+root="C:/Django Project/KantSites"
+php="${PHP_BINARY:-C:/php84/php.exe}"
+export DATABASE_URL="sqlite:///$root/var/huefner.db"
+export MEDIA_DIRECTORY="$root/var/huefner-media"
+assets="$root/var/huefner-assets"
+if [ -n "$1" ]; then
+  "$php" scripts/build-huefner-assets.php "$1" "$assets"
+fi
+if [ ! -f "$assets/favicon.png" ]; then
+  echo "Bilder fehlen: erst mit dem Ordner des Entwurfs als Argument aufrufen." >&2
+  exit 1
+fi
+rm -f "$root/var/huefner.db"
+rm -rf "$root/var/huefner-media"
+"$php" vendor/bin/doctrine-migrations migrate --no-interaction -q
+"$php" -d memory_limit=512M scripts/seed-huefner.php "$assets"
+# Barlow und Barlow Condensed vom eigenen Server; der Abruf ergaenzt fonts.css nur.
+if [ -f "$root/var/cacert.pem" ]; then
+  "$php" -d curl.cainfo="$root/var/cacert.pem" -d openssl.cafile="$root/var/cacert.pem" bin/console cms:fonts:fetch
+else
+  "$php" bin/console cms:fonts:fetch
+fi