Auto pull german mirrors before install

01-install/05-mirrors.sh

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+# Rank download mirrors before pacstrap — WITHOUT reflector (not on the ISO).
+# Pull a Germany/HTTPS list from Arch's official mirrorlist generator, already
+# ordered by mirror status/score, and activate it. Only needs curl (on the ISO)
+# and hits archlinux.org's CDN, so it doesn't depend on the slow current mirror.
+# pacstrap copies this list into the installed system, so it speeds up the base
+# install AND every later pacman run. Falls back to the shipped list on failure.
+url='https://archlinux.org/mirrorlist/?country=DE&protocol=https&ip_version=4&use_mirror_status=on'
+tmp="$(mktemp)"
+if curl -fsS --max-time 20 "$url" -o "$tmp" && grep -q '^#Server' "$tmp"; then
+  cp -f /etc/pacman.d/mirrorlist /etc/pacman.d/mirrorlist.bak 2>/dev/null || true
+  sed 's/^#Server/Server/' "$tmp" > /etc/pacman.d/mirrorlist
+  info "mirrorlist → Germany/https, $(grep -c '^Server' /etc/pacman.d/mirrorlist) mirrors (status-ranked)"
+else
+  info "could not fetch DE mirrorlist — keeping the ISO's list"
+fi
+rm -f "$tmp"