fix: build errors and merge in Casey's branch (driodiwb)

src/pages/background/lib/createSchedule.ts

@@ -14,6 +14,7 @@ export default async function createSchedule(scheduleName: string): Promise<stri
     schedules.push({
         name: scheduleName,
         courses: [],
+        hours: 0
     });
 
     await UserScheduleStore.set('schedules', schedules);