polish(frontend): 侧栏与徽章可读性，智能悬停提示

降权全站字重；优化右栏公告/数据块；类型状态徽章用固定浅色区分；TipHost 仅在文案不一致、非文字或省略时显示。

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/components/RoleBadge.tsx

@@ -57,7 +57,7 @@ export default function RoleBadge({
 
   return (
     <span
-      className={`inline-flex items-center gap-1 rounded-full px-2 py-0.5 text-[11px] font-bold leading-[1.6] ${
+      className={`inline-flex items-center gap-1 rounded-full px-2 py-0.5 text-[11px] font-medium leading-[1.6] ${
         truncate ? "max-w-full whitespace-nowrap" : "whitespace-nowrap"
       } ${className}`}
       style={{ background: `var(${meta.softToken})`, color: `var(${meta.colorToken})` }}