add REST transport to bridge xt/ tests against v3 API

NicTool::Transport::REST maps v2 RPC-style method calls to v3 REST
endpoints with JWT auth, parameter name translation, and response
flattening. The transport passes all v2 fields through to v3 so that
validation mismatches surface as clear test failures rather than being
silently suppressed.

Updated xt/ test credentials to satisfy v3's stricter validation
(valid emails, strong passwords). Added env var support to NicToolTest
and NicTool so tests can select REST transport without code changes.

Results against v3: 5816/5996 pass (97%). Remaining 180 failures map
to unimplemented v3 features (delegation, zone delegation permissions).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: burning-bush-dev

server/api/lib/NicTool.pm

@@ -4,7 +4,6 @@ package NicTool;
 
 use strict;
 use Carp;
-use SOAP::Lite;
 
 #use Data::Dumper;
 
@@ -99,8 +98,8 @@ sub _conf {
     return {
         'server_host'          => 'localhost',
         'server_port'          => '8082',
-        'transfer_protocol'    => 'http',
-        'data_protocol'        => 'soap',
+        'transfer_protocol'    => ($ENV{NICTOOL_TRANSFER_PROTOCOL} || 'http'),
+        'data_protocol'        => ($ENV{NICTOOL_DATA_PROTOCOL} || 'soap'),
         'nt_user_session'      => undef,
         'use_protocol_version' => 0,
         'nt_protocol_version'  => '1.0',

server/api/lib/NicTool/Transport.pm

@@ -36,6 +36,7 @@ sub get_transport_agent {
     my %transport_class_for = (
         SOAP   => 'NicTool::Transport::SOAP',
         XMLRPC => 'NicTool::Transport::XMLRPC',
+        REST   => 'NicTool::Transport::REST',
     );
     my $class = $transport_class_for{$dp}
         or die "Unable to use class NicTool::Transport::$dp for data protocol '$protocol'";