fix: preserve grouped domains on fluent routes

system/web/routing/Router.cfc

@@ -1331,13 +1331,20 @@ component
 			if ( !variables.withClosure.isEmpty() ) {
 				processWith( arguments );
 			}
+			// route() does not declare domain directly, but group() can add it to the
+			// arguments collection. Preserve it in the fluent route definition so it
+			// reaches addRoute() below.
+			if ( arguments.keyExists( "domain" ) ) {
+				variables.thisRoute.domain = arguments.domain
+			}
 			// Prepare Routing Structure
 			var args = {};
 			// Simple => Event
 			if ( isSimpleValue( arguments.target ) ) {
 				args = {
 					pattern : arguments.pattern,
 					event   : arguments.target,
+					domain  : variables.thisRoute.domain,
 					verbs   : ( variables.thisRoute.keyExists( "verbs" ) ? variables.thisRoute.verbs : "" ),
 					name    : arguments.name
 				};
@@ -1347,6 +1354,7 @@ component
 				args = {
 					pattern  : arguments.pattern,
 					response : arguments.target,
+					domain   : variables.thisRoute.domain,
 					verbs    : ( variables.thisRoute.keyExists( "verbs" ) ? variables.thisRoute.verbs : "" ),
 					name     : arguments.name
 				};
@@ -1361,6 +1369,11 @@ component
 			if ( !variables.withClosure.isEmpty() ) {
 				processWith( arguments );
 			}
+			// Materialize a domain supplied by group() before a fluent terminator
+			// registers variables.thisRoute.
+			if ( arguments.keyExists( "domain" ) ) {
+				variables.thisRoute.domain = arguments.domain
+			}
 
 			// Store data and continue
 			variables.thisRoute.pattern = arguments.pattern;

tests/specs/web/routing/RouterTest.cfc

@@ -141,6 +141,20 @@ component extends="coldbox.system.testing.BaseModelTest" {
 						expect( routes[ 3 ].pattern ).toBe( "api/users/:id/" );
 					} );
 				} );
+
+				given( "a grouped route with a domain", function(){
+					then( "it should preserve the domain for fluent and inline routes", function(){
+						router.group( { domain : ":tenant.example.com" }, function(){
+							router.route( "/fluent" ).to( "main.fluent" )
+							router.route( "/inline", "main.inline" )
+						} )
+
+						var routes = router.getRoutes()
+						expect( routes ).toHaveLength( 2 )
+						expect( routes[ 1 ].domain ).toBe( ":tenant.example.com" )
+						expect( routes[ 2 ].domain ).toBe( ":tenant.example.com" )
+					} )
+				} )
 			} );
 
 			story( "I want to register routes with a toAction() terminator", function(){