test(repo): mock de Collection sans any et export CardDocument

src/repositories/mongo-card-repository.ts

@@ -2,7 +2,7 @@ import { MongoClient, type Collection } from 'mongodb'
 import type { Card, CardInput } from '../domain/card'
 import type { CardRepository } from '../domain/card-repository'
 
-interface CardDocument {
+export interface CardDocument {
   c_id: string
   question: string
   response: string
@@ -123,4 +123,4 @@ export class MongoCardRepository implements CardRepository {
     const themes: string[] = await this.collection.distinct('theme')
     return themes.sort()
   }
-}
+}