fix: remove Post-ERG branding → XAMXAM; drop legacy posterg nginx symlink in deploy script; rename posterg.db → xamxam.db

app/src/SmtpRelay.php

@@ -34,7 +34,7 @@ class SmtpRelay {
             'username'   => '',
             'password'   => '',
             'from_email' => '',
-            'from_name'  => 'Post-ERG',
+            'from_name'  => 'XAMXAM',
         ];
     }