feat: gestion réseau DHCP/statique depuis l'interface web

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/apply_network.sh

@@ -0,0 +1,41 @@
+#!/bin/bash
+# apply_network.sh — Configure le réseau via NetworkManager
+# Usage: apply_network.sh dhcp
+#    ou: apply_network.sh static <ip/prefix> <gateway> <dns>
+# Exemple: apply_network.sh static 192.168.1.100/24 192.168.1.1 8.8.8.8,1.1.1.1
+
+set -e
+
+MODE="$1"
+CON="Wired connection 1"
+
+# Trouve la connexion active si le nom par défaut a changé
+if ! nmcli con show "$CON" &>/dev/null; then
+    CON=$(nmcli -t -f NAME,TYPE con show --active | grep ethernet | cut -d: -f1 | head -1)
+fi
+
+[[ -z "$CON" ]] && echo "Aucune connexion Ethernet trouvée." && exit 1
+
+if [[ "$MODE" == "dhcp" ]]; then
+    nmcli con mod "$CON" ipv4.method auto ipv4.addresses "" ipv4.gateway "" ipv4.dns ""
+    nmcli con up "$CON"
+    echo "OK: mode DHCP appliqué."
+
+elif [[ "$MODE" == "static" ]]; then
+    IP_PREFIX="$2"   # ex: 192.168.1.100/24
+    GATEWAY="$3"     # ex: 192.168.1.1
+    DNS="$4"         # ex: 8.8.8.8,1.1.1.1
+
+    [[ -z "$IP_PREFIX" || -z "$GATEWAY" ]] && echo "IP et gateway requis." && exit 1
+
+    nmcli con mod "$CON" \
+        ipv4.method manual \
+        ipv4.addresses "$IP_PREFIX" \
+        ipv4.gateway "$GATEWAY" \
+        ipv4.dns "${DNS:-8.8.8.8,1.1.1.1}"
+    nmcli con up "$CON"
+    echo "OK: IP statique $IP_PREFIX appliquée."
+
+else
+    echo "Usage: $0 dhcp | static <ip/prefix> <gateway> [dns]" && exit 1
+fi