fix(server): 赛事包导出传入项目名，修复 GET /api/export/project.zip 恒 500

console/renderer/styles.css

@@ -51,10 +51,11 @@ body {
 }
 
 .brand-mark {
-  width: 8px;
-  height: 22px;
-  border-radius: 4px;
-  background: linear-gradient(180deg, var(--accent), #1b6bb8);
+  width: 30px;
+  height: 30px;
+  border-radius: 8px;
+  object-fit: cover;
+  flex: none;
 }
 
 h1 {