change admin menu url to smtp-server

internal/webui/webui.go

@@ -1,5 +1,5 @@
 // Package webui is the admin web interface, mirroring email_server/server_web_ui/.
-// It's mounted at /pymta-manager, matching the Flask blueprint's url_prefix exactly.
+// It's mounted at /smtp-server, matching the Flask blueprint's url_prefix exactly.
 package webui
 
 import (
@@ -18,7 +18,7 @@ import (
 	"mailgoserver/internal/toolbox"
 )
 
-const Prefix = "/pymta-manager"
+const Prefix = "/smtp-server"
 
 // App holds every dependency the web routes need, mirroring the module-level
 // singletons (Session, DKIMManager, settings) that server_web_ui/*.py imports.