case 4724 - SMTP certificate checked, password never returned

Mailer checks the SMTP server's certificate (trust and name; no revocation
check). New config setting AYANOVA_SMTP_ACCEPT_ANY_CERTIFICATE accepts any
certificate (boot warning, shown in server info, manual page).
The notification settings GET returns ******** instead of the SMTP
password; a PUT with ******** or empty keeps the stored password.
F30 and F31 fixed. Changelog and manual updated.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

server/AyaNova/Controllers/GlobalOpsNotificationSettingsController.cs

@@ -60,6 +60,10 @@ namespace AyaNova.Api.Controllers
             if (o == null)
                 return NotFound(new ApiErrorResponse(ApiErrorCode.NOT_FOUND));
 
+            //case 4724: the SMTP password never goes to the client (detached first so the mask can't be saved)
+            ct.Entry(o).State = EntityState.Detached;
+            o.SmtpPassword = GlobalOpsNotificationSettingsBiz.SMTP_PASSWORD_MASK;
+
             return Ok(ApiOkResponse.Response(o));
         }