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/config/app.config.ts

@@ -0,0 +1,6 @@
+import { registerAs } from '@nestjs/config';
+
+export default registerAs('', () => ({
+  port: process.env.PORT,
+  env: process.env.NODE_ENV,
+}));

backend/src/config/database.config.ts

@@ -0,0 +1,9 @@
+import { registerAs } from '@nestjs/config';
+
+export default registerAs('database', () => ({
+  host: process.env.POSTGRES_HOST,
+  port: process.env.POSTGRES_PORT,
+  username: process.env.POSTGRES_USER,
+  password: process.env.POSTGRES_PASSWORD,
+  database: process.env.POSTGRES_DB,
+}));

backend/src/config/jwt.config.ts

@@ -0,0 +1,8 @@
+import { registerAs } from '@nestjs/config';
+
+export default registerAs('jwt', () => ({
+  accessSecret: process.env.JWT_ACCESS_SECRET,
+  accessExpiresIn: process.env.JWT_ACCESS_EXPIRES,
+  refreshSecret: process.env.JWT_REFRESH_SECRET,
+  refreshExpiresIn: process.env.JWT_REFRESH_EXPIRES,
+}));

backend/src/config/validation.schema.ts

@@ -0,0 +1,21 @@
+import * as Joi from 'joi';
+
+export const configValidationSchema = Joi.object({
+  NODE_ENV: Joi.string()
+    .valid('development', 'production', 'test')
+    .default('development'),
+  PORT: Joi.number().optional(),
+
+  // Base de données
+  POSTGRES_HOST: Joi.string().required(),
+  POSTGRES_PORT: Joi.number().required(),
+  POSTGRES_USER: Joi.string().required(),
+  POSTGRES_PASSWORD: Joi.string().required(),
+  POSTGRES_DB: Joi.string().required(),
+
+  // JWT
+  JWT_ACCESS_SECRET: Joi.string().required(),
+  JWT_ACCESS_EXPIRES: Joi.string().required(),
+  JWT_REFRESH_SECRET: Joi.string().required(),
+  JWT_REFRESH_EXPIRES: Joi.string().required(),
+});