Add initiative rolls

module/applications/spell-dialog.mjs

@@ -91,9 +91,14 @@ export default class OathHammerSpellDialog {
       rejectClose: false,
       buttons: [{
         label:    game.i18n.localize("OATHHAMMER.Dialog.CastSpell"),
-        callback: (_ev, btn) => Object.fromEntries(
-          [...btn.form.elements].filter(e => e.name).map(e => [e.name, e.value])
-        ),
+        callback: (_ev, btn) => {
+          const out = {}
+          for (const el of btn.form.elements) {
+            if (!el.name) continue
+            out[el.name] = el.type === "checkbox" ? String(el.checked) : el.value
+          }
+          return out
+        },
       }],
     })
 
@@ -113,6 +118,7 @@ export default class OathHammerSpellDialog {
       bonus:           parseInt(result.bonus)           || 0,
       grimPenalty:     parseInt(result.noGrimoire)      || 0,
       visibility:      result.visibility ?? game.settings.get("core", "rollMode"),
+      explodeOn5:      result.explodeOn5 === "true",
     }
   }
 }