fix: shared page language redirect + skip TLS for self-signed certs — closes #163 #164

- Language change on public shared page no longer triggers API call / login redirect
- New "Skip TLS certificate check" toggle in Admin > SMTP settings
- Also configurable via SMTP_SKIP_TLS_VERIFY=true env var

server/src/routes/auth.ts

@@ -516,7 +516,7 @@ router.get('/validate-keys', authenticate, async (req: Request, res: Response) =
   res.json(result);
 });
 
-const ADMIN_SETTINGS_KEYS = ['allow_registration', 'allowed_file_types', 'smtp_host', 'smtp_port', 'smtp_user', 'smtp_pass', 'smtp_from', 'notification_webhook_url', 'app_url'];
+const ADMIN_SETTINGS_KEYS = ['allow_registration', 'allowed_file_types', 'smtp_host', 'smtp_port', 'smtp_user', 'smtp_pass', 'smtp_from', 'smtp_skip_tls_verify', 'notification_webhook_url', 'app_url'];
 
 router.get('/app-settings', authenticate, (req: Request, res: Response) => {
   const authReq = req as AuthRequest;

server/src/services/notifications.ts

@@ -220,11 +220,13 @@ async function sendEmail(to: string, subject: string, body: string, userId?: num
   const lang = userId ? getUserLanguage(userId) : 'en';
 
   try {
+    const skipTls = process.env.SMTP_SKIP_TLS_VERIFY === 'true' || getAppSetting('smtp_skip_tls_verify') === 'true';
     const transporter = nodemailer.createTransport({
       host: config.host,
       port: config.port,
       secure: config.secure,
       auth: config.user ? { user: config.user, pass: config.pass } : undefined,
+      ...(skipTls ? { tls: { rejectUnauthorized: false } } : {}),
     });
 
     await transporter.sendMail({