feat: make SportEasy invitation email sending asynchronous

as-talange-core/src/main/java/com/astalange/core/service/SportEasyEmailService.java

@@ -43,6 +43,18 @@ public class SportEasyEmailService {
 
     public record BatchSendResult(int sentCount, int skippedCount, int errorCount, String message) {}
 
+    public void sendInvitationForLicenceAsync(Long licenceId) {
+        if (licenceId == null) {
+            log.warn("Impossible d'envoyer l'invitation SportEasy : ID de licence nul.");
+            return;
+        }
+        try {
+            sendInvitationForLicence(licenceId, true);
+        } catch (Exception e) {
+            log.error("Erreur lors de l'envoi asynchrone de l'invitation SportEasy pour la licence ID {}: ", licenceId, e);
+        }
+    }
+
     @Transactional
     public boolean sendInvitationForLicence(Long licenceId, boolean forceResend) {
         Licence licence = licenceRepository.findById(licenceId)
@@ -86,8 +98,12 @@ public class SportEasyEmailService {
         String subject = "AS Talange - Invitation SportEasy (" + categorieNom + ")";
         String htmlContent = buildEmailHtml(adherentNom, categorieNom, saisonNom, inviteUrl);
 
-        boolean sentSuccessfully = false;
+        licence.setSportEasyEmailSent(true);
+        licence.setSportEasyEmailSentAt(LocalDateTime.now());
+        licenceRepository.save(licence);
 
+        // Envoi asynchrone via CompletableFuture pour ne pas bloquer la réponse HTTP
+        java.util.concurrent.CompletableFuture.runAsync(() -> {
             if (mailSender != null) {
                 try {
                     MimeMessage message = mailSender.createMimeMessage();
@@ -98,27 +114,18 @@ public class SportEasyEmailService {
                     helper.setText(htmlContent, true);
 
                     mailSender.send(message);
-                sentSuccessfully = true;
                     log.info("E-mail d'invitation SportEasy envoyé avec succès via SMTP à {} pour {}", recipientEmail, adherentNom);
                 } catch (Exception e) {
                     log.warn("Impossible d'envoyer l'e-mail via SMTP pour {}: {}. Bascule en mode simulation / log.", recipientEmail, e.getMessage());
                     logDevEmail(recipientEmail, subject, htmlContent);
-                // In dev environment or fallback, mark as processed anyway to simulate full flow
-                sentSuccessfully = true;
                 }
             } else {
                 log.info("Aucun JavaMailSender configuré (Mode DEV). Simulation de l'envoi d'e-mail SportEasy.");
                 logDevEmail(recipientEmail, subject, htmlContent);
-            sentSuccessfully = true;
             }
+        });
 
-        if (sentSuccessfully) {
-            licence.setSportEasyEmailSent(true);
-            licence.setSportEasyEmailSentAt(LocalDateTime.now());
-            licenceRepository.save(licence);
-        }
-
-        return sentSuccessfully;
+        return true;
     }
 
     @Transactional