feat: miler duty/break tracking, delivery confirmation, earnings, notifications, and support

Adds MilerDutyLog, MilerBreakLog, MilerSupportTicket models and earnings
fields on BookingAssignment, plus a new milerAppController.go wiring 10
endpoints under /api/v1/miler for the rider app: duty start/end/status,
break start/end, own-bookings listing, delivery confirmation (writes
DeliveryProof, completes the assignment, publishes booking.outcome via
NATS, and pushes an FCM delivery notification), earnings summaries
(daily/weekly/monthly), synthetic notifications, and support tickets.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

migrations/migrate.go

@@ -44,6 +44,9 @@ func Migrate(db *gorm.DB) error {
 		&models.HubStaffAccount{},
 		&models.HubConversation{},
 		&models.HubMessage{},
+		&models.MilerDutyLog{},
+		&models.MilerBreakLog{},
+		&models.MilerSupportTicket{},
 	)
 
 	if err != nil {