Various items fixes and enhancements

module/models/character.mjs

@@ -52,6 +52,7 @@ export default class LethalFantasyCharacter extends foundry.abstract.TypeDataMod
       bonus: new fields.NumberField({ ...requiredInteger, initial: 0, min: 0 })
     })
     schema.grit = new fields.SchemaField({
+      starting: new fields.NumberField({ ...requiredInteger, initial: 0, min: 0 }),
       earned: new fields.NumberField({ ...requiredInteger, initial: 0, min: 0 }),
       current: new fields.NumberField({ ...requiredInteger, initial: 0, min: 0 })
     })
@@ -87,6 +88,17 @@ export default class LethalFantasyCharacter extends foundry.abstract.TypeDataMod
   /** @override */
   static LOCALIZATION_PREFIXES = ["LETHALFANTASY.Character"]
 
+  prepareDerivedData() {
+    super.prepareDerivedData();
+    let grit = 0
+    for (let c in this.characteristics) {
+      if (SYSTEM.CHARACTERISTICS_MAJOR[c.id]) {
+        grit += this.characteristics[c].value
+      }
+    }
+    this.grit.starting = Math.round(grit / 6)
+  }
+  
   /**
    * Rolls a dice for a character.
    * @param {("save"|"resource|damage")} rollType The type of the roll.