diff --git a/attached_assets/Pasted--throw-Error-Dynamic-require-of-x-is-not-supported-Error-Dynamic-1755118786192_1755118786193.txt b/attached_assets/Pasted--throw-Error-Dynamic-require-of-x-is-not-supported-Error-Dynamic-1755118786192_1755118786193.txt
new file mode 100644
index 0000000..5e3d97d
--- /dev/null
+++ b/attached_assets/Pasted--throw-Error-Dynamic-require-of-x-is-not-supported-Error-Dynamic-1755118786192_1755118786193.txt
@@ -0,0 +1,197 @@
+     
+  throw Error('Dynamic require of "' + x + '" is not supported');
+
+
+
+^
+
+Error: Dynamic require of "events" is not supported
+
+    at file:///app/dist/index.js:11:9
+
+    at node_modules/node-cron/dist/esm/tasks/inline-scheduled-task.js (file:///app/dist/index.js:3561:36)
+
+    at __require2 (file:///app/dist/index.js:17:50)
+
+    at node_modules/node-cron/dist/esm/node-cron.js (file:///app/dist/index.js:4042:35)
+
+    at __require2 (file:///app/dist/index.js:17:50)
+
+    at file:///app/dist/index.js:4502:32
+
+    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
+
+Node.js v20.19.4
+
+🔗 Database initialization: {
+
+  NODE_ENV: 'production',
+
+  isProduction: true,
+
+  hasDbUrl: true,
+
+  dbHost: 'logiflow-db'
+
+}
+
+🐳 PRODUCTION: Using standard PostgreSQL
+
+✅ PostgreSQL connection test successful
+
+🔗 Database initialization: {
+
+  NODE_ENV: 'production',
+
+  isProduction: true,
+
+  hasDbUrl: true,
+
+  dbHost: 'logiflow-db:5432'
+
+}
+
+✅ Using DatabaseStorage (production PostgreSQL)
+
+file:///app/dist/index.js:11
+
+  throw Error('Dynamic require of "' + x + '" is not supported');
+
+
+
+^
+
+Error: Dynamic require of "events" is not supported
+
+    at file:///app/dist/index.js:11:9
+
+    at node_modules/node-cron/dist/esm/tasks/inline-scheduled-task.js (file:///app/dist/index.js:3561:36)
+
+    at __require2 (file:///app/dist/index.js:17:50)
+
+    at node_modules/node-cron/dist/esm/node-cron.js (file:///app/dist/index.js:4042:35)
+
+    at __require2 (file:///app/dist/index.js:17:50)
+
+    at file:///app/dist/index.js:4502:32
+
+    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
+
+Node.js v20.19.4
+
+🔗 Database initialization: {
+
+  NODE_ENV: 'production',
+
+  isProduction: true,
+
+  hasDbUrl: true,
+
+  dbHost: 'logiflow-db'
+
+}
+
+🐳 PRODUCTION: Using standard PostgreSQL
+
+✅ PostgreSQL connection test successful
+
+🔗 Database initialization: {
+
+  NODE_ENV: 'production',
+
+  isProduction: true,
+
+  hasDbUrl: true,
+
+  dbHost: 'logiflow-db:5432'
+
+}
+
+✅ Using DatabaseStorage (production PostgreSQL)
+
+file:///app/dist/index.js:11
+
+  throw Error('Dynamic require of "' + x + '" is not supported');
+
+
+
+^
+
+Error: Dynamic require of "events" is not supported
+
+    at file:///app/dist/index.js:11:9
+
+    at node_modules/node-cron/dist/esm/tasks/inline-scheduled-task.js (file:///app/dist/index.js:3561:36)
+
+    at __require2 (file:///app/dist/index.js:17:50)
+
+    at node_modules/node-cron/dist/esm/node-cron.js (file:///app/dist/index.js:4042:35)
+
+    at __require2 (file:///app/dist/index.js:17:50)
+
+    at file:///app/dist/index.js:4502:32
+
+    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
+
+Node.js v20.19.4
+
+🔗 Database initialization: {
+
+  NODE_ENV: 'production',
+
+  isProduction: true,
+
+  hasDbUrl: true,
+
+  dbHost: 'logiflow-db'
+
+}
+
+🐳 PRODUCTION: Using standard PostgreSQL
+
+✅ PostgreSQL connection test successful
+
+🔗 Database initialization: {
+
+  NODE_ENV: 'production',
+
+  isProduction: true,
+
+  hasDbUrl: true,
+
+  dbHost: 'logiflow-db:5432'
+
+}
+
+✅ Using DatabaseStorage (production PostgreSQL)
+
+file:///app/dist/index.js:11
+
+  throw Error('Dynamic require of "' + x + '" is not supported');
+
+
+
+^
+
+Error: Dynamic require of "events" is not supported
+
+    at file:///app/dist/index.js:11:9
+
+    at node_modules/node-cron/dist/esm/tasks/inline-scheduled-task.js (file:///app/dist/index.js:3561:36)
+
+    at __require2 (file:///app/dist/index.js:17:50)
+
+    at node_modules/node-cron/dist/esm/node-cron.js (file:///app/dist/index.js:4042:35)
+
+    at __require2 (file:///app/dist/index.js:17:50)
+
+    at file:///app/dist/index.js:4502:32
+
+    at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
+
+Node.js v20.19.4
+
+
+      
+      
+    
\ No newline at end of file
diff --git a/replit.md b/replit.md
index f53d685..eaa00fa 100644
--- a/replit.md
+++ b/replit.md
@@ -19,6 +19,15 @@ La plateforme fournit une gestion robuste des flux de travail de livraison avec
 
 ## Recent Changes
 
+### 2025-08-13 - Module de sauvegarde PostgreSQL implémenté + correction ESM
+✅ **Module de sauvegarde PostgreSQL complet** :
+- **Interface BackupManager** : Affichage des sauvegardes avec détails (taille, tables, statut)
+- **Fonctions** : Création manuelle, suppression, téléchargement de sauvegardes SQL
+- **Automatisation** : Sauvegardes programmées à 2h du matin avec timer natif
+- **Base de données** : Table `DATABASE_BACKUPS` avec suivi complet des sauvegardes
+- **Navigation** : Ajouté dans la sidebar administration pour les admins
+- **Compatibilité ESM** : Remplacement de `node-cron` par `setTimeout` natif pour résoudre l'erreur production
+
 ### 2025-08-13 - Optimisation performance production + correction calendrier
 ✅ **Résolution latence production** :
 - **Problème** : Console saturée par centaines de logs "API Response" causant latence
diff --git a/server/backupService.ts b/server/backupService.ts
index 07661f0..d74f80b 100644
--- a/server/backupService.ts
+++ b/server/backupService.ts
@@ -2,7 +2,6 @@ import { exec } from 'child_process';
 import { promisify } from 'util';
 import fs from 'fs';
 import path from 'path';
-import cron from 'node-cron';
 import { nanoid } from 'nanoid';
 import { eq, desc } from "drizzle-orm";
 import { db } from "./db";
@@ -187,19 +186,35 @@ export class BackupService {
   }
 
   private scheduleAutomaticBackup(): void {
-    // Schedule backup every night at 2:00 AM
-    cron.schedule('0 2 * * *', async () => {
-      try {
-        console.log('🌙 Starting scheduled automatic backup...');
-        await this.createBackup('automatic');
-      } catch (error) {
-        console.error('❌ Scheduled backup failed:', error);
+    // Use native setTimeout instead of node-cron for ESM compatibility
+    const scheduleNextBackup = () => {
+      const now = new Date();
+      const next2AM = new Date(now);
+      next2AM.setHours(2, 0, 0, 0);
+      
+      // If it's already past 2 AM today, schedule for tomorrow
+      if (now.getHours() >= 2) {
+        next2AM.setDate(next2AM.getDate() + 1);
       }
-    }, {
-      timezone: 'Europe/Paris'
-    });
+      
+      const msUntilBackup = next2AM.getTime() - now.getTime();
+      
+      setTimeout(async () => {
+        try {
+          console.log('🔄 Starting automatic backup...');
+          await this.createBackup('automatic', 'system');
+          console.log('✅ Automatic backup completed');
+        } catch (error) {
+          console.error('❌ Automatic backup failed:', error);
+        }
+        
+        // Schedule the next backup (24 hours later)
+        scheduleNextBackup();
+      }, msUntilBackup);
+    };
     
-    console.log('⏰ Automatic backup scheduled for 2:00 AM daily');
+    scheduleNextBackup();
+    console.log('⏰ Automatic backup scheduled for 2:00 AM daily (native timer)');
   }
 }