fix: json schema validation

Author: simonwalz

system/cuos/system-schema.json

@@ -34,7 +34,7 @@
           "mac-address": {
             "type": "string",
             "description": "MAC address for interface identification",
-            "pattern": "^(?:[0-9A-Fa-f]{2}([-:])(?:[0-9A-Fa-f]{2}\\1){4}[0-9A-Fa-f]{2}|[0-9A-Fa-f]{12})$"
+            "pattern": "^(?:[0-9A-Fa-f]{2}[-:](?:[0-9A-Fa-f]{2}[-:]){4}[0-9A-Fa-f]{2}|[0-9A-Fa-f]{12})$"
           },
           "dhcp": {
             "type": "boolean",

system/cuos/utils.sh

@@ -88,7 +88,7 @@ jq_replace() {
 
 state() {
   local key="$1"
-  local value="$2"
+  local value="${2:-}"
   local state_file="/data/state.json"
   local new_state