done all the implementations of each parts yet

src/main/java/com/pmumali/plr/dtos/GainViewDto.java

@@ -0,0 +1,28 @@
+package com.pmumali.plr.dtos;
+
+import java.math.BigDecimal;
+import java.time.LocalDateTime;
+import java.util.List;
+
+import com.pmumali.plr.enums.PariType;
+
+import lombok.Builder;
+
+@Builder
+public record GainViewDto(
+    Long pariId,
+    Long courseId,
+    String courseNom,
+    PariType pariType,
+    String pariSousType,        // e.g. "QP_ORDRE", "MULTI6" (optional)
+    String bettorRef,
+    BigDecimal mise,
+    BigDecimal gain,            // official or 0 when provisional
+    String payoutMode,          // "OFFICIAL" or "PROVISIONAL"
+    String numeroPlus,          // for Quinté+ tickets (if any)
+    List<GainViewDto.Selection> selections,
+    LocalDateTime createdAt
+) {
+    @Builder
+    public static record Selection(Long chevalId, String nomCheval, Integer position) {}
+}