style(11-04): apply prettier to phase-11 modified files

- apps/pwa/src/components/EventForm.tsx (Task 2)
- apps/api/src/broker/{expand,reminderScheduler,sync,vevent}.ts (Plans 11-01/11-03)
- apps/api/tests/broker/{reminderScheduler,sync}.test.ts (Plans 11-01/11-03)

apps/api/src/broker/vevent.ts

@@ -230,11 +230,7 @@ export function extractValarms(rawVevent: string): ICAL.Component[] {
  * @param leadDays     — days before event date (0 = same day, 1 = 1 day before, etc.)
  * @param tz           — IANA timezone identifier (e.g. 'America/New_York')
  */
-export function computeAlertInstantUtc(
-  eventDateStr: string,
-  leadDays: number,
-  tz: string,
-): Date {
+export function computeAlertInstantUtc(eventDateStr: string, leadDays: number, tz: string): Date {
   // Parse event date as UTC midnight, then subtract lead days to get alert date
   const [y, m, d] = eventDateStr.split('-').map(Number) as [number, number, number];
   const alertDateUtcMs = Date.UTC(y, m - 1, d - leadDays);