make name identifier prefix LocId (#39035)

Content.Shared/NameIdentifier/NameIdentifierGroupPrototype.cs

@@ -1,4 +1,4 @@
-using Robust.Shared.Prototypes;
+using Robust.Shared.Prototypes;
 
 namespace Content.Shared.NameIdentifier;
 
@@ -9,17 +9,27 @@ public sealed partial class NameIdentifierGroupPrototype : IPrototype
     public string ID { get; private set; } = default!;
 
     /// <summary>
-    ///     Should the identifier become the full name, or just append?
+    /// Should the identifier become the full name, or just append?
     /// </summary>
-    [DataField("fullName")]
+    [DataField]
     public bool FullName = false;
 
-    [DataField("prefix")]
-    public string? Prefix;
+    /// <summary>
+    /// Optional format identifier. If set, the name will be formatted using it (e.g., "MK-500").
+    /// If not set, only the numeric part will be used (e.g., "500").
+    /// </summary>
+    [DataField]
+    public LocId? Format;
 
-    [DataField("maxValue")]
+    /// <summary>
+    /// The maximal value appearing in an identifier.
+    /// </summary>
+    [DataField]
     public int MaxValue = 1000;
 
-    [DataField("minValue")]
+    /// <summary>
+    /// The minimal value appearing in an identifier.
+    /// </summary>
+    [DataField]
     public int MinValue = 0;
 }