feat(#206,#207): cartes rose soin_enfant (backend + UI)

Closes #206

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/src/modules/cards/dto/cards.dto.ts

@@ -3,6 +3,7 @@ import {
   IsDateString,
   IsEnum,
   IsOptional,
+  IsObject,
   IsString,
   IsUUID,
   MaxLength,
@@ -48,6 +49,11 @@ export class CreerCarteDto {
   @IsOptional()
   @IsEnum(CardOperationType)
   operation?: CardOperationType;
+
+  @ApiPropertyOptional()
+  @IsOptional()
+  @IsObject()
+  payload?: Record<string, any>;
 }
 
 export class RepondreCarteDto {
@@ -79,6 +85,11 @@ export class MajCarteDto {
   @IsString()
   @MaxLength(2000)
   motif?: string;
+
+  @ApiPropertyOptional()
+  @IsOptional()
+  @IsObject()
+  payload?: Record<string, any>;
 }
 
 export class CarteDto {