chore(setup): install Windows-image tooling for deploy-win

Add aria2 + wimtools (wimlib-imagex) + xorriso + genisoimage + cabextract
+ chntpw to setup-host-linux.sh (Step 3) — the UUP dump → ISO conversion
and the no-prompt ISO repack that `ci template deploy-win` needs. Also
create the <CI_ROOT>/iso cache dir in the layout step.

setup-host-linux.sh

@@ -181,14 +181,28 @@ if ! command -v setfacl &>/dev/null; then
     apt-get install -y acl -qq
 fi
 
+# Tooling immagini Windows (template deploy-win): scarica/build ISO da UUP dump
+# e patch ISO (inject autounattend + no-prompt boot) via xorriso.
+#   aria2 (aria2c)     — download paralleli dei file UUP dalla CDN Microsoft
+#   wimtools           — wimlib-imagex, conversione UUP → install.wim/ISO
+#   xorriso/genisoimage — repack ISO bootable / build seed ISO (deploy-linux)
+#   cabextract         — estrazione pacchetti .cab durante la conversione UUP
+#   chntpw             — richiesto dal converter UUP (uup_download_linux.sh)
+for pkg in aria2 wimtools xorriso genisoimage cabextract chntpw; do
+    if ! dpkg -s "$pkg" &>/dev/null; then
+        echo "  Installazione pacchetto $pkg..."
+        apt-get install -y "$pkg" -qq
+    fi
+done
+
 mkdir -p \
-    "$CI_ROOT"/{build-vms,artifacts,templates,keys,logs,runner} \
+    "$CI_ROOT"/{build-vms,artifacts,templates,keys,logs,runner,iso} \
     "$OPT_CI" \
     /etc/ci/keys
 
 chown -R "$CI_USER:$CI_USER" "$CI_ROOT" "$OPT_CI"
 chmod 750 "$CI_ROOT" "$OPT_CI"
-for d in build-vms artifacts templates keys logs runner; do
+for d in build-vms artifacts templates keys logs runner iso; do
     chmod 750 "$CI_ROOT/$d"
 done
 chmod 700 /etc/ci/keys