预测结果展示增强：status 徽章 + 专家权重条形图

- types.ts: 添加 agent_weights / status 字段
- components.tsx: 添加 AgentWeightsBar 纯 CSS 权重分布条 + EmptyText 组件
- Predictions.tsx: 摘要行 degraded/failed 状态徽章、展开区 AgentWeightsBar、
  预测中防连点、中文错误映射
- EvalPage.tsx: 修复 EmptyText 导入

构建验证：tsc && vite build 通过

frontend/src/admin/components.tsx

@@ -396,3 +396,43 @@ export function Spinner({ className = '' }: { className?: string }) {
 export function SkeletonBlock({ className = '' }: { className?: string }) {
   return <div className={`skeleton ${className}`} />
 }
+
+
+/** 空状态文本 */
+export function EmptyText({ text }: { text: string }) {
+  return (
+    <div className="py-10 text-center text-sm text-ink-400">
+      {text}
+    </div>
+  )
+}
+
+/** Agent 权重条形图 */
+export function AgentWeightsBar({ weights, okCount }: { weights: Record<string, number>; okCount: number }) {
+  const entries = Object.entries(weights).filter(([, w]) => w > 0)
+  if (entries.length === 0) return null
+  const total = entries.reduce((s, [, w]) => s + w, 0) || 1
+  const colors = ['bg-ink-900', 'bg-ink-700', 'bg-ink-500', 'bg-press', 'bg-ink-300']
+  return (
+    <div className="mt-2 border-t border-ink-200 pt-2">
+      <div className="mb-1 text-2xs text-ink-400">终裁专家权重</div>
+      <div className="space-y-1">
+        {entries.map(([k, w], i) => (
+          <div key={k} className="flex items-center gap-2 text-2xs">
+            <div className="h-3.5 flex-1 overflow-hidden rounded-sm bg-ink-200/60">
+              <div
+                className={`h-full ${colors[i % colors.length]} transition-all duration-500`}
+                style={{ width: `${Math.max(3, Math.round((w / total) * 100))}%` }}
+              />
+            </div>
+            <span className="w-12 text-right tabular-nums text-ink-500">
+              {Math.round((w / total) * 100)}%
+            </span>
+            <span className="w-24 truncate text-ink-400" title={k}>{k}</span>
+          </div>
+        ))}
+      </div>
+      <div className="mt-1 text-2xs text-ink-400">有效专家：{okCount}/{entries.length}</div>
+    </div>
+  )
+}