fix(abcip): isArray:true without a positive arrayLength is scalar (review I-2 consistency)

src/Drivers/ZB.MOM.WW.OtOpcUa.Driver.AbCip.Contracts/AbCipEquipmentTagParser.cs

@@ -49,9 +49,11 @@ public static class AbCipEquipmentTagParser
 
     /// <summary>
     ///     Resolve the 1-D array shape from an <c>isArray</c> / <c>arrayLength</c> pair (the foundation
-    ///     contract carrier). The tag is an ARRAY ⟺ <c>isArray</c> is truthy AND <c>arrayLength</c>
-    ///     is a number <c>&gt;= 1</c> (a 1-element array is valid). Returns
-    ///     <c>(IsArray: false, ElementCount: 1)</c> for a scalar.
+    ///     contract carrier). The canonical rule: the tag is an ARRAY ⟺ <c>isArray</c> is truthy AND
+    ///     <c>arrayLength</c> is a number <c>&gt;= 1</c>. Any other combination (isArray absent/false,
+    ///     or isArray:true with arrayLength missing/invalid/&lt;1) is a SCALAR and returns
+    ///     <c>(IsArray: false, ElementCount: 1)</c>. This matches every other driver (Modbus, S7,
+    ///     TwinCAT, AbLegacy) which also return scalar for that degenerate input.
     /// </summary>
     private static (bool IsArray, int ElementCount) ReadArrayShape(JsonElement o)
     {
@@ -62,8 +64,8 @@ public static class AbCipEquipmentTagParser
             && len.TryGetInt32(out var n)
             && n >= 1)
             return (true, n);
-        // isArray:true but arrayLength missing/invalid — treat as a 1-element array (count 1).
-        return (true, 1);
+        // isArray:true but arrayLength missing/invalid/<1 — canonical rule: scalar (matches all other drivers).
+        return (false, 1);
     }
 
     private static TEnum ReadEnum<TEnum>(JsonElement o, string name, TEnum fallback) where TEnum : struct, Enum