remove old brand banner

tests/global-topbar-contract.test.js

@@ -10,6 +10,11 @@ function read(relativePath) {
 	return fs.readFileSync(filePath, 'utf8');
 }
 
+function assertMissing(relativePath, message) {
+	const filePath = path.join(__dirname, '..', relativePath);
+	assert(!fs.existsSync(filePath), message || `${relativePath} should not exist`);
+}
+
 function assertIncludes(haystack, needle, message) {
 	assert(
 		haystack.includes(needle),
@@ -30,6 +35,7 @@ const topbar = read('templates/partials/header/topbar.tpl');
 const theme = read('theme.scss');
 const stylesheet = read('scss/westgate/_topbar.scss');
 const client = read('public/client.js');
+const themeHooks = read('lib/theme.js');
 
 assertIncludes(
 	header,
@@ -51,6 +57,11 @@ assertIncludes(
 	'@import "./scss/westgate/topbar";',
 	'theme.scss should import the focused topbar partial'
 );
+assertExcludes(
+	theme,
+	'@import "./scss/westgate/header";',
+	'theme.scss should not import the removed brand banner stylesheet'
+);
 assertIncludes(
 	stylesheet,
 	'.wg-topbar',
@@ -94,3 +105,21 @@ assertIncludes(topbar, '{{{ if config.loggedIn }}}', 'Topbar should branch on th
 assertIncludes(topbar, '{{{ if canChat }}}', 'Chat controls should remain permission-gated');
 assertIncludes(topbar, '{{{ if allowRegistration }}}', 'Registration should remain server-gated');
 assertIncludes(topbar, '{{{ each navigation }}}', 'Topbar should render ACP Navigation items');
+
+assertMissing(
+	'templates/partials/header/brand.tpl',
+	'Theme should inherit Harmony brand markup instead of shipping the removed Westgate brand banner override'
+);
+assertMissing(
+	'scss/westgate/_header.scss',
+	'Removed brand banner styles should not remain in the theme'
+);
+assertMissing(
+	'public/images/plum-header-bg.png',
+	'Removed brand banner background should not remain in static assets'
+);
+assertExcludes(
+	themeHooks,
+	'brand-header',
+	'Removed brand banner widget area should not remain registered'
+);