chore: remove unused constants and service utility

- Deleted `discovery.ts` for unused constants related to discovery page limits and sorting.
- Removed `unwrapService.ts`, a utility function for handling service results, as it is no longer needed.

constants/discovery.ts

@@ -1,10 +0,0 @@
-export const DISCOVERY_PAGE_SIZE = 12
-
-/** Home hero strip: most-booked events. */
-export const HOME_POPULAR_LIMIT = 3
-
-/** Home category preview list under EventTitleRoller. */
-export const HOME_CATEGORY_PREVIEW_LIMIT = 6
-
-export const HOME_POPULAR_SORT = '-bookedCount'
-export const HOME_CATEGORY_SORT = '-createdAt'

queries/unwrapService.ts

@@ -1,11 +0,0 @@
-import type { ServiceResult } from '@/services/errorHandler'
-
-/**
- * Turns a ServiceResult into a thrown error for TanStack Query,
- * or returns the success payload.
- */
-export const unwrapService = <T>(result: ServiceResult<T>): T => {
-  if (result.ok) return result.data
-
-  throw result.error
-}