feat: add console setup helper

Add a whiptail-based /usr/sbin/setup helper for first-console
configuration of keymap, LAN, and WAN settings.
The helper reuses the local rpcd handlers, preserves existing interface names,
and avoids rewriting unchanged network configuration.

Assisted-by: OpenCode:openai/gpt-5.4

Author: filippocarletti

docs/quickstart.md

@@ -31,6 +31,18 @@ See the [install page]({{site.manual_url}}/install.html) inside manual.
 
 See the [access page]({{site.manual_url}}/remote_access.html) inside manual.
 
+## Console setup
+
+The image ships the `/usr/sbin/setup` helper for basic console-first
+configuration.
+
+The command uses a `whiptail` interface to:
+
+- switch the console keyboard between `it` and the default `us`
+- assign physical network cards to `lan` and `wan`
+- configure `lan` IPv4/CIDR
+- configure `wan` as `dhcp` or `static`
+
 ### LuCI
 
 The following sections/options should not be changed from the web interface:

packages/ns-api/Makefile

@@ -31,6 +31,7 @@ define Package/ns-api
 		+python3-requests \
 		+python3-semver \
 		+python3-urllib \
+		+whiptail \
 		+sshpass \
 		+wireguard-tools
 	EXTRA_DEPENDS:=adblock (>=4.5.3)
@@ -183,6 +184,7 @@ define Package/ns-api/install
 	$(INSTALL_CONF) files/nat-helpers.keep $(1)/lib/upgrade/keep.d/nat-helpers
 	$(LN) /usr/bin/msmtp $(1)/usr/sbin/sendmail
 	$(INSTALL_BIN) ./files/load-kernel-modules $(1)/usr/sbin/load-kernel-modules
+	$(INSTALL_BIN) ./files/setup $(1)/usr/sbin/setup
 	$(INSTALL_BIN) ./files/firewall-apply-default-logging $(1)/usr/sbin/firewall-apply-default-logging
 	$(INSTALL_DIR) $(1)/etc/config
 	$(INSTALL_CONF) ./files/config/ns-api $(1)/etc/config/ns-api