feat(server): equipment-tag node writability from Tag.AccessLevel (parity-safe, no migration)

src/Server/ZB.MOM.WW.OtOpcUa.Runtime/Drivers/DeploymentArtifact.cs

@@ -1,5 +1,6 @@
 using System.Text.Json;
 using ZB.MOM.WW.OtOpcUa.Commons.Types;
+using ZB.MOM.WW.OtOpcUa.Configuration.Enums;
 using ZB.MOM.WW.OtOpcUa.OpcUaServer;
 
 namespace ZB.MOM.WW.OtOpcUa.Runtime.Drivers;
@@ -417,6 +418,17 @@ public static class DeploymentArtifact
             var dataType = el.TryGetProperty("DataType", out var dtEl) ? dtEl.GetString() : null;
             var tagConfig = el.TryGetProperty("TagConfig", out var tcEl) && tcEl.ValueKind == JsonValueKind.String
                 ? tcEl.GetString() : null;
+            // AccessLevel → Writable. ConfigComposer serialises the TagAccessLevel enum WITHOUT a
+            // string converter, so it lands as a number (Read = 0, ReadWrite = 1); tolerate the string
+            // form ("ReadWrite") too — same defensive both-forms parse as the Kind gate above. MUST match
+            // Phase7Composer's `AccessLevel == TagAccessLevel.ReadWrite` exactly (byte-parity). A missing
+            // field defaults to non-writable (read-only).
+            var writable = el.TryGetProperty("AccessLevel", out var alEl) && alEl.ValueKind switch
+            {
+                JsonValueKind.Number => alEl.GetInt32() == (int)TagAccessLevel.ReadWrite,
+                JsonValueKind.String => string.Equals(alEl.GetString(), nameof(TagAccessLevel.ReadWrite), StringComparison.Ordinal),
+                _ => false,
+            };
 
             if (string.IsNullOrWhiteSpace(tagId) || string.IsNullOrWhiteSpace(di) || string.IsNullOrWhiteSpace(name)) continue;
             if (!driverToNamespace.TryGetValue(di!, out var nsId)) continue;
@@ -432,7 +444,8 @@ public static class DeploymentArtifact
                 FolderPath: folder ?? string.Empty,
                 Name: name!,
                 DataType: dataType ?? "BaseDataType",
-                FullName: ExtractTagFullName(tagConfig)));
+                FullName: ExtractTagFullName(tagConfig),
+                Writable: writable));
         }
 
         result.Sort((a, b) =>