agenda: centralize FullCalendar touch defaults

Sem long-press delays customizados, tap em slot vazio precisa de 1000ms
antes de disparar select — diverge totalmente do mouse (clique abre na
hora). Mesmo problema em eventDrop. Move pra utils/fcDefaults.js e
aplica nos 4 calendars (AgendaCalendar, AgendaClinicMosaic,
AgendaTerapeutaPage, MelissaAgenda no proximo commit).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/features/agenda/pages/AgendaTerapeutaPage.vue

@@ -31,6 +31,7 @@ import dayGridPlugin from '@fullcalendar/daygrid';
 import listPlugin from '@fullcalendar/list';
 import interactionPlugin from '@fullcalendar/interaction';
 import ptBrLocale from '@fullcalendar/core/locales/pt-br';
+import { FC_TOUCH_DEFAULTS } from '@/features/agenda/utils/fcDefaults';
 
 import AgendaEventDialog from '@/features/agenda/components/AgendaEventDialog.vue';
 import BloqueioDialog from '@/features/agenda/components/BloqueioDialog.vue';
@@ -672,6 +673,7 @@ const _initSlotMax = slotMaxTime.value;
 const fcOptions = computed(() => ({
     plugins: [timeGridPlugin, dayGridPlugin, listPlugin, interactionPlugin],
     locale: ptBrLocale,
+    ...FC_TOUCH_DEFAULTS,
     timeZone: timezone.value,
 
     headerToolbar: false,