Iteam cleanup + less migration

module/models/ability.mjs

@@ -3,13 +3,28 @@ import { SYSTEM } from "../config/system.mjs"
 export default class OathHammerAbility extends foundry.abstract.TypeDataModel {
   static defineSchema() {
     const fields = foundry.data.fields
+    const requiredInteger = { required: true, nullable: false, integer: true }
     const schema = {}
 
     schema.description = new fields.HTMLField({ required: true, textSearch: true })
-    schema.abilityType = new fields.StringField({ required: true, initial: "class-ability", choices: SYSTEM.ABILITY_TYPE_CHOICES })
+
+    // lineage-trait (racial) or class-ability (starting or advancement trait)
+    schema.abilityType = new fields.StringField({
+      required: true, initial: "class-ability", choices: SYSTEM.ABILITY_TYPE_CHOICES
+    })
+
+    // Which class or lineage this trait belongs to (e.g. "Berserker", "Wood Elf")
     schema.source = new fields.StringField({ required: true, nullable: false, initial: "" })
-    schema.prerequisite = new fields.StringField({ required: true, nullable: false, initial: "" })
-    schema.passiveBonus = new fields.StringField({ required: true, nullable: false, initial: "" })
+
+    // When uses reset: none = passive (always on), encounter, day
+    schema.usagePeriod = new fields.StringField({
+      required: true, initial: "none", choices: SYSTEM.ABILITY_USAGE_PERIOD
+    })
+
+    // Maximum uses per period. 0 = passive / unlimited.
+    // Use a descriptive string when the limit is formula-based
+    // (e.g. "equal to Fate ranks") — store the note in the description.
+    schema.maxUses = new fields.NumberField({ ...requiredInteger, initial: 0, min: 0 })
 
     return schema
   }