feat: Intégration du backend NestJS depuis YNOV

- Framework: NestJS avec TypeORM
- Authentification: JWT (access + refresh tokens)
- Gestion utilisateurs: CRUD complet avec validation
- Routes: auth, users, parents, assistantes maternelles
- Dockerfile pour conteneurisation

backend/src/routes/user/dto/create_admin.dto.ts

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+import { OmitType } from "@nestjs/swagger";
+import { CreateUserDto } from "./create_user.dto";
+
+export class CreateAdminDto extends OmitType(CreateUserDto, ['role'] as const) {}

backend/src/routes/user/dto/create_assistante.dto.ts

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+import { OmitType } from "@nestjs/swagger";
+import { IsBoolean, IsDateString, IsInt, IsNotEmpty, IsOptional, IsString, IsUUID, Length, Matches, Max, Min } from "class-validator";
+import { CreateUserDto } from "./create_user.dto";
+
+export class CreateAssistanteDto extends OmitType(CreateUserDto, ['role', 'photo_url', 'consentement_photo'] as const) {
+    @IsUUID()
+    @IsNotEmpty()
+    user_id?: string;
+
+    @IsString()
+    @IsNotEmpty()
+    @Length(1, 50)
+    approval_number: string;
+
+    @Matches(/^\d{15}$/)
+    @IsNotEmpty()
+    nir: string;
+
+    @IsInt()
+    @Min(1)
+    @Max(10)
+    @IsNotEmpty()
+    max_children: number;
+
+    @IsString()
+    @IsNotEmpty()
+    photo_url: string;
+
+    @IsBoolean()
+    @IsNotEmpty()
+    consentement_photo: boolean;
+
+    @IsDateString()
+    @IsNotEmpty()
+    agreement_date: string;
+
+    @IsString()
+    @IsNotEmpty()
+    @Length(1, 100)
+    residence_city: string;
+
+    @IsOptional()
+    biography?: string;
+
+    @IsOptional()
+    available?: boolean;
+
+    @IsOptional()
+    years_experience?: number;
+
+    @IsOptional()
+    specialty?: string;
+
+    @IsOptional()
+    places_available?: number;
+}

backend/src/routes/user/dto/create_gestionnaire.dto.ts

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+import { OmitType } from "@nestjs/swagger";
+import { CreateUserDto } from "./create_user.dto";
+
+export class CreateGestionnaireDto extends OmitType(CreateUserDto, ['role'] as const) {}

backend/src/routes/user/dto/create_parent.dto.ts

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+import { OmitType } from "@nestjs/swagger";
+import { CreateUserDto } from "./create_user.dto";
+import { IsNotEmpty, IsOptional, IsString, IsUUID } from "class-validator";
+
+export class CreateParentDto extends OmitType(CreateUserDto, ['role', 'photo_url'] as const) {
+    @IsUUID()
+    @IsNotEmpty()
+    user_id: string;
+
+    @IsOptional()
+    @IsUUID()
+    co_parent_id?: string;
+
+    @IsString()
+    @IsNotEmpty()
+    photo_url: string;
+}

backend/src/routes/user/dto/create_user.dto.ts

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+import { ApiProperty } from '@nestjs/swagger';
+import {
+  IsBoolean,
+  IsDateString,
+  IsEmail,
+  IsEnum,
+  IsNotEmpty,
+  IsOptional,
+  IsString,
+  MinLength,
+  MaxLength,
+} from 'class-validator';
+import { RoleType, GenreType, StatutUtilisateurType, SituationFamilialeType } from 'src/entities/users.entity';
+
+export class CreateUserDto {
+  @ApiProperty({ example: 'sosso.test@example.com' })
+  @IsEmail()
+  @IsNotEmpty()
+  email: string;
+
+  @ApiProperty({ minLength: 6, example: 'Mon_motdepasse_fort_1234?' })
+  @IsString()
+  @IsNotEmpty()
+  @MinLength(6)
+  password: string;
+
+  @ApiProperty({ example: 'Julien' })
+  @IsString()
+  @IsNotEmpty()
+  @MaxLength(100)
+  prenom: string;
+
+  @ApiProperty({ example: 'Dupont' })
+  @IsString()
+  @IsNotEmpty()
+  @MaxLength(100)
+  nom: string;
+
+  @ApiProperty({ enum: GenreType, required: false, default: GenreType.AUTRE })
+  @IsOptional()
+  @IsEnum(GenreType)
+  genre?: GenreType = GenreType.AUTRE;
+
+  @ApiProperty({ enum: RoleType })
+  @IsEnum(RoleType)
+  role: RoleType;
+
+  @ApiProperty({ enum: StatutUtilisateurType, required: false, default: StatutUtilisateurType.EN_ATTENTE })
+  @IsOptional()
+  @IsEnum(StatutUtilisateurType)
+  statut?: StatutUtilisateurType = StatutUtilisateurType.EN_ATTENTE;
+
+  @ApiProperty({ example: SituationFamilialeType.MARIE, required: false, enum: SituationFamilialeType, default: SituationFamilialeType.MARIE})
+  @IsOptional()
+  @IsEnum(SituationFamilialeType)
+  situation_familiale?: SituationFamilialeType;
+
+  @ApiProperty({ example: '+33123456789' })
+  @IsString()
+  @IsNotEmpty()
+  @MaxLength(20)
+  telephone: string;
+
+  @ApiProperty({ example: 'Paris', required: false })
+  @IsOptional()
+  @IsString()
+  @MaxLength(150)
+  ville?: string;
+
+  @ApiProperty({ example: '75000', required: false })
+  @IsOptional()
+  @IsString()
+  @MaxLength(10)
+  code_postal?: string;
+
+  @ApiProperty({ example: '10 rue de la paix, 75000 Paris' })
+  @IsString()
+  @IsNotEmpty()
+  adresse: string;
+
+  @ApiProperty({ example: 'https://example.com/photo.jpg', required: false })
+  @IsOptional()
+  @IsString()
+  photo_url?: string;
+
+  @ApiProperty({ default: false })
+  @IsOptional()
+  @IsBoolean()
+  consentement_photo?: boolean = false;
+
+  @ApiProperty({ required: false })
+  @IsOptional()
+  @IsDateString({}, { message: 'date_consentement_photo doit être une date ISO valide' })
+  date_consentement_photo?: string | null;
+
+  @ApiProperty({ default: false })
+  @IsOptional()
+  @IsBoolean()
+  changement_mdp_obligatoire?: boolean = false;
+
+  @ApiProperty({ example: true })
+  @IsBoolean()
+  @IsNotEmpty()
+  cguAccepted: boolean;
+}

backend/src/routes/user/dto/update_admin.dto.ts

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+import { PartialType } from "@nestjs/swagger";
+import { CreateAdminDto } from "./create_admin.dto";
+
+export class UpdateAdminDto extends PartialType(CreateAdminDto) {} 

backend/src/routes/user/dto/update_assistante.dto.ts

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+import { PartialType } from "@nestjs/swagger";
+import { CreateAssistanteDto } from "./create_assistante.dto";
+
+export class UpdateAssistanteDto extends PartialType(CreateAssistanteDto) {}

backend/src/routes/user/dto/update_gestionnaire.dto.ts

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+import { PartialType } from "@nestjs/swagger";
+import { CreateGestionnaireDto } from "./create_gestionnaire.dto";
+
+export class UpdateGestionnaireDto extends PartialType(CreateGestionnaireDto) {}

backend/src/routes/user/dto/update_parent.dto.ts

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+import { PartialType } from "@nestjs/swagger";
+import { CreateParentDto } from "./create_parent.dto";
+
+export class UpdateParentsDto extends PartialType(CreateParentDto) {}

backend/src/routes/user/dto/update_user.dto.ts

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+import { PartialType } from "@nestjs/swagger";
+import { CreateUserDto } from "./create_user.dto";
+
+export class UpdateUserDto extends PartialType(CreateUserDto) {}