diff --git a/frontend/vite.config.ts b/frontend/vite.config.ts
index a0d1e977..34686e4b 100644
--- a/frontend/vite.config.ts
+++ b/frontend/vite.config.ts
@@ -74,7 +74,16 @@ export default defineConfig({
 				'src/lib/document/**',
 				'src/hooks.server.ts'
 			],
-			exclude: ['**/*.svelte', '**/*.svelte.ts', '**/__mocks__/**'],
+			exclude: [
+				'**/*.svelte',
+				'**/*.svelte.ts',
+				'**/__mocks__/**',
+				// Tiptap NodeView — builds live ProseMirror DOM and only runs inside
+				// the browser editor, so it is exercised by the client project's
+				// browser tests, not this node server-coverage run. Browser-only UI
+				// .ts file, excluded like the actions/hooks this config measures around.
+				'src/lib/shared/discussion/mentionNodeView.ts'
+			],
 			thresholds: {
 				lines: 80,
 				functions: 80,