fix(loyalty): keep tokens removed after merging staging

Merging staging brought back, through its own re-apply of #32, the TOKENS
campaign mapping, its test and the token_used sort fallback that c988a79
had removed, because those hunks did not conflict. This restores the five
files to c988a79.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/processor/game_play_processor.go

@@ -99,10 +99,6 @@ func (p *GamePlayProcessor) ListGamePlays(ctx context.Context, query *models.Lis
 	}
 
 	offset := (query.Page - 1) * query.Limit
-	// The column was renamed; the old name still sorts the same way.
-	if query.SortBy == "token_used" {
-		query.SortBy = "coins_used"
-	}
 
 	// Get game plays from repository
 	gamePlays, total, err := p.gamePlayRepo.List(