fix: preserve request actions and soften test-mode mail failures

backend/workflows/email_workflows.py

@@ -1,5 +1,6 @@
 from datetime import timedelta
 from pathlib import Path
+import logging
 
 from django.conf import settings
 from django.utils import timezone
@@ -11,6 +12,8 @@ from .forms import OnboardingRequestForm
 from .models import NotificationRule, NotificationTemplate, OnboardingRequest, ScheduledWelcomeEmail, WorkflowConfig
 from .services import get_email_test_redirect, is_email_test_mode
 
+logger = logging.getLogger(__name__)
+
 
 def resolve_workflow_emails() -> tuple[str, str, str, str, str]:
     config = WorkflowConfig.objects.order_by('id').first()
@@ -42,13 +45,19 @@ def send_workflow_email(
             f"Originale Empfänger: {', '.join(recipients)}\n\n{body}"
         )
 
-    send_system_email(
-        subject=subject,
-        body=effective_body,
-        to=effective_to,
-        attachments=[str(a) for a in (attachments or [])],
-        from_email=from_email,
-    )
+    try:
+        send_system_email(
+            subject=subject,
+            body=effective_body,
+            to=effective_to,
+            attachments=[str(a) for a in (attachments or [])],
+            from_email=from_email,
+        )
+    except OSError as exc:
+        if is_email_test_mode():
+            logger.warning('Email send skipped in test mode because SMTP is unavailable: %s', exc)
+            return
+        raise
 
 
 def render_notification_template(template_key: str, context: dict, language_code: str | None = None) -> tuple[str, str]: