Fix starship agility

module/documents/roll.mjs

@@ -199,7 +199,10 @@ export default class FTLNomadRoll extends Roll {
           label: label,
           callback: (event, button, dialog) => {
             const output = Array.from(button.form.elements).reduce((obj, input) => {
-              if (input.name) obj[input.name] = input.value
+              if (input.name) {
+                // For checkboxes, use checked property instead of value
+                obj[input.name] = input.type === 'checkbox' ? input.checked : input.value
+              }
               return obj
             }, {})
             return output
@@ -271,7 +274,7 @@ export default class FTLNomadRoll extends Roll {
     options.skillModifier = Number(rollData.skillModifier) || 0
     options.rangeModifier = Number(rollData.rangeModifier) || 0
     options.numericModifierSelect = Number(rollData.numericModifierSelect) || 0
-    options.useVehicleBonus = rollData.useVehicleBonus !== "off" && rollData.useVehicleBonus !== false
+    options.useVehicleBonus = rollData.useVehicleBonus === true
     options.finalModifier = options.numericModifier + options.skillModifier + options.rangeModifier
     let mod = options.rollItem?.value || 0
     mod += options.numericModifierSelect