refactor: event instances

Signed-off-by: Sebastian Krupinski <krupinski01@gmail.com>

src/types/instance.ts

@@ -1,9 +1,9 @@
 import type { EntityObject } from '@ChronoManager/models/entity'
 
-export interface CalendarOccurrence {
+export interface CalendarInstance {
   key: string
   entity: EntityObject
-  occurrenceId: string | null
+  instanceId: string | null
   startMs: number
   endMs: number
   dayStartMs: number
@@ -13,9 +13,3 @@ export interface CalendarOccurrence {
   label: string | null
   color: string | null
 }
-
-export interface CalendarOccurrenceIndex {
-  byDay: Map<number, CalendarOccurrence[]>
-  byEntity: Map<string, CalendarOccurrence[]>
-  sorted: CalendarOccurrence[]
-}