fix: show only user-typed notes on appointment card

Remove auto-appending of "Appointment with [staff name]" to notes on
save, and preserve existing notes when dragging an appointment to a
new slot.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/Frontend/src/pages/appointments-page.tsx

@@ -98,6 +98,7 @@ interface ScheduledAppointment {
   endTime: string | Date;
   status: string | null;
   type: string;
+  notes?: string | null;
   procedureCodes?: string[];
 }
 
@@ -571,6 +572,7 @@ export default function AppointmentsPage() {
       patientInsuranceProvider,
       hasProcedures: !!(apt as any).hasProcedures,
       hasClaimWithNumber: !!(apt as any).hasClaimWithNumber,
+      notes: (apt as any).notes ?? null,
       procedureCodes: (apt as any).procedureCodes ?? [],
       movedByAi: !!(apt as any).movedByAi,
       staffId,
@@ -733,7 +735,7 @@ export default function AppointmentsPage() {
       status: apt.status ?? undefined,
       startTime: newTimeSlot.time,
       endTime: endTime,
-      notes: `Appointment with ${staff?.name}`,
+      notes: apt.notes ?? undefined,
     };
     // Call update mutation
     updateAppointmentMutation.mutate({
@@ -838,6 +840,11 @@ export default function AppointmentsPage() {
             {appointment.procedureCodes.join(", ")}
           </div>
         )}
+        {appointment.notes && (
+          <div className="truncate text-[10px] opacity-90 font-semibold">
+            {appointment.notes}
+          </div>
+        )}
       </div>
     );
   }