fix: fallback to default fromEmail address when spring.mail.username is empty in local dev

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

@@ -37,6 +37,13 @@ public class PaiementEmailService {
         this.paiementRepository = paiementRepository;
     }
 
+    private String getEffectiveFromEmail() {
+        if (fromEmail != null && !fromEmail.trim().isEmpty() && fromEmail.contains("@")) {
+            return fromEmail.trim();
+        }
+        return "noreply@as-talange.fr";
+    }
+
     public void sendPaiementConfirmationAsync(Long paiementId) {
         if (paiementId == null) {
             log.warn("Impossible d'envoyer l'e-mail de confirmation : ID de paiement nul.");
@@ -97,7 +104,7 @@ public class PaiementEmailService {
                 try {
                     MimeMessage message = mailSender.createMimeMessage();
                     MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");
-                    helper.setFrom(fromEmail);
+                    helper.setFrom(getEffectiveFromEmail());
                     helper.setTo(recipientEmail);
                     helper.setSubject(subject);
                     helper.setText(htmlContent, true);

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

@@ -41,6 +41,13 @@ public class SportEasyEmailService {
         this.mailSender = mailSender;
     }
 
+    private String getEffectiveFromEmail() {
+        if (fromEmail != null && !fromEmail.trim().isEmpty() && fromEmail.contains("@")) {
+            return fromEmail.trim();
+        }
+        return "noreply@as-talange.fr";
+    }
+
     public record BatchSendResult(int sentCount, int skippedCount, int errorCount, String message) {}
 
     public void sendInvitationForLicenceAsync(Long licenceId) {
@@ -108,7 +115,7 @@ public class SportEasyEmailService {
                 try {
                     MimeMessage message = mailSender.createMimeMessage();
                     MimeMessageHelper helper = new MimeMessageHelper(message, true, "UTF-8");
-                    helper.setFrom(fromEmail);
+                    helper.setFrom(getEffectiveFromEmail());
                     helper.setTo(recipientEmail);
                     helper.setSubject(subject);
                     helper.setText(htmlContent, true);