Normalize Snapper snapshot setup

install/config/all.sh

@@ -3,5 +3,6 @@ run_logged "$OMARCHY_INSTALL/config/increase-lockout-limit.sh"
 run_logged "$OMARCHY_INSTALL/config/lockscreen-pam.sh"
 run_logged "$OMARCHY_INSTALL/config/fix-powerprofilesctl-shebang.sh"
 run_logged "$OMARCHY_INSTALL/config/docker.sh"
+run_logged "$OMARCHY_INSTALL/config/snapper.sh"
 run_logged "$OMARCHY_INSTALL/config/enable-services.sh"
 run_logged "$OMARCHY_INSTALL/config/firewall.sh"

install/config/snapper.sh

@@ -0,0 +1,24 @@
+SNAPPER_CONFIG_PATH="${OMARCHY_SNAPPER_CONFIG_PATH:-/etc/snapper/configs/root}"
+SNAPPER_CONF_PATH="${OMARCHY_SNAPPER_CONF_PATH:-/etc/conf.d/snapper}"
+template="${OMARCHY_SNAPPER_TEMPLATE:-${OMARCHY_PATH:-/usr/share/omarchy}/default/snapper/root}"
+
+echo "Configuring Omarchy Snapper snapshot retention"
+
+if [[ ! -f $SNAPPER_CONFIG_PATH ]]; then
+  mkdir -p "$(dirname "$SNAPPER_CONFIG_PATH")"
+
+  if [[ ${OMARCHY_SNAPPER_CONFIGURE_TEST:-0} == "1" ]]; then
+    : >"$SNAPPER_CONFIG_PATH"
+  else
+    snapper --no-dbus -c root create-config / >/dev/null 2>&1 || snapper -c root create-config / >/dev/null
+  fi
+fi
+
+install -m 0644 "$template" "$SNAPPER_CONFIG_PATH"
+
+mkdir -p "$(dirname "$SNAPPER_CONF_PATH")"
+printf '%s\n' 'SNAPPER_CONFIGS="root"' >"$SNAPPER_CONF_PATH"
+chmod 0644 "$SNAPPER_CONF_PATH"
+
+systemctl disable --now snapper-timeline.timer >/dev/null 2>&1 || true
+systemctl enable --now snapper-cleanup.timer limine-snapper-sync.service >/dev/null 2>&1 || true