Various fixes and add rune support

module/models/magic-item.mjs

@@ -1,4 +1,4 @@
-import { SYSTEM } from "../config/system.mjs"
+import { CLASS_RESTRICTION_CHOICES, SYSTEM } from "../config/system.mjs"
 
 export default class OathHammerMagicItem extends foundry.abstract.TypeDataModel {
   static defineSchema() {
@@ -27,7 +27,7 @@ export default class OathHammerMagicItem extends foundry.abstract.TypeDataModel
     schema.isBonded = new fields.BooleanField({ initial: false })
 
     // Class/lineage restriction printed in the item's type line, e.g. "Troubadour Only"
-    schema.classRestriction = new fields.StringField({ required: true, nullable: false, initial: "" })
+    schema.classRestriction = new fields.StringField({ required: false, nullable: true, initial: null, choices: CLASS_RESTRICTION_CHOICES })
 
     // Limited-use items (e.g. "once per day"); none = always active
     schema.usagePeriod = new fields.StringField({
@@ -39,6 +39,9 @@ export default class OathHammerMagicItem extends foundry.abstract.TypeDataModel
 
     schema.equipped = new fields.BooleanField({ initial: false })
 
+    // Attached runic spells — only for talisman subtype (max 2; snapshot of spell item)
+    schema.runes = new fields.ArrayField(new fields.ObjectField(), { required: true, initial: [] })
+
     return schema
   }