Added a theme selector

backend/app/services/email_service.py

@@ -35,14 +35,14 @@ def save_smtp_settings(values: dict) -> None:
         conn.commit()
 
 
-def smtp_configured() -> bool:
-    smtp = get_smtp_settings()
+def smtp_configured(smtp_values: dict | None = None) -> bool:
+    smtp = smtp_values or get_smtp_settings()
     return bool(smtp['smtp_host'] and smtp['smtp_from'])
 
 
 def send_message(email: str, subject: str, body: str, smtp_values: dict | None = None) -> None:
     smtp = smtp_values or get_smtp_settings()
-    if not smtp_configured():
+    if not smtp_configured(smtp):
         raise RuntimeError('SMTP is not configured; set LINKLOG_SMTP_HOST and LINKLOG_SMTP_FROM')
 
     message = EmailMessage()