fix: resolver DNS nginx pour éviter cache IP stale après restart backend

backend/src/services/email.ts

@@ -1,66 +0,0 @@
-import nodemailer from 'nodemailer';
-import { decrypt } from '../crypto';
-
-export interface UserSmtpConfig {
-  smtp_host:       string;
-  smtp_port:       number;
-  smtp_secure:     boolean;
-  smtp_user:       string;
-  smtp_pass_enc:   string;
-  smtp_from_name:  string;
-  smtp_from_email: string;
-}
-
-function createTransporter(user: UserSmtpConfig) {
-  return nodemailer.createTransport({
-    host:   user.smtp_host,
-    port:   user.smtp_port,
-    secure: user.smtp_secure,
-    auth: {
-      user: user.smtp_user,
-      pass: decrypt(user.smtp_pass_enc),
-    },
-  });
-}
-
-/**
- * Envoie la facture par email.
- * Expéditeur = compte SMTP de l'utilisateur connecté.
- * Destinataire = email de la société à rembourser.
- */
-export async function sendInvoiceEmail(
-  user: UserSmtpConfig,
-  toEmail: string,
-  pdfAbsPath: string,
-  pdfFilename: string
-): Promise<void> {
-  const transporter = createTransporter(user);
-
-  await transporter.sendMail({
-    from:    `"${user.smtp_from_name}" <${user.smtp_from_email}>`,
-    to:      toEmail,
-    subject: 'Facture à rembourser',
-    text:    '',
-    attachments: [
-      {
-        filename:    pdfFilename,
-        path:        pdfAbsPath,
-        contentType: 'application/pdf',
-      },
-    ],
-  });
-}
-
-/**
- * Email de test pour vérifier la config SMTP de l'utilisateur.
- */
-export async function sendTestEmail(user: UserSmtpConfig): Promise<void> {
-  const transporter = createTransporter(user);
-
-  await transporter.sendMail({
-    from:    `"${user.smtp_from_name}" <${user.smtp_from_email}>`,
-    to:      user.smtp_from_email,
-    subject: '[NotesFrais] Test de configuration SMTP',
-    text:    'Votre configuration SMTP fonctionne correctement ✓',
-  });
-}