types(api): 🏷️ Update merchant submission types to reflect data structure changes in @packages/@types/src/api/merch-submission.types.ts

Co-Authored-By: Lilith Autocommit <noreply@atlilith.com>

@packages/@types/src/api/merch-submission.types.ts

@@ -331,6 +331,8 @@ export interface VoteableIdea {
   uniqueVoters: number
   /** User's current vote allocation (null if not logged in) */
   userVoteAllocation?: number | null
+  /** Whether the user has cast their free daily vote on this idea today */
+  hasVotedFreeToday?: boolean | null
   publishedAt: string // ISO 8601
   hotScore: number
   /** The main phrase/slogan for this idea */
@@ -375,6 +377,13 @@ export interface AllocateVotesResponseDto {
   ideaTotalVotes: number
 }
 
+/** Response when casting a free daily vote */
+export interface CastFreeVoteResponseDto {
+  success: boolean
+  ideaTotalVotes: number
+  freeVoteCastToday: boolean
+}
+
 /** Paginated list of voteable ideas */
 export interface IdeasListResponseDto {
   data: VoteableIdea[]