feat(ui): restructure overview tab to 3-row layout

- Row 1: basic info (span=8) + plan (span=16) with virtual users in
  2-column grid and time distribution as a table
- Row 2: user input in one row (goal/intent/role/seeds), seeds area
  enlarged with no height cap for full JSON display
- Row 3: session progress full-width with progress bar in header

frontend/web/src/components/intelligent_eval/EvalOverview.tsx

@@ -1,5 +1,5 @@
 import {
-  Alert, Card, Col, Descriptions, Empty, Progress, Row, Space, Spin, Tag,
+  Alert, Card, Col, Descriptions, Empty, Progress, Row, Space, Spin, Table, Tag,
 } from 'antd'
 import type { IntelligentEval } from '../../api'
 import { colors } from '../../tokens'
@@ -14,12 +14,33 @@ function personaLabel(persona: Record<string, unknown>): string {
   return JSON.stringify(persona)
 }
 
+function FieldBlock({ label, content }: { label: string; content: string }) {
+  return (
+    <div style={{ height: '100%' }}>
+      <div style={{ fontSize: 12, color: colors.textSecondary, marginBottom: 4 }}>{label}</div>
+      <div style={{
+        fontSize: 13, lineHeight: 1.6, padding: '8px 12px', background: colors.bgSubtle,
+        borderRadius: 6, whiteSpace: 'pre-wrap', height: 'calc(100% - 22px)',
+      }}>
+        {content || '—'}
+      </div>
+    </div>
+  )
+}
+
 function PlanView({ ev }: { ev: IntelligentEval }) {
   const plan = ev.plan
   if (!plan) return <Empty description="暂无粗计划" image={Empty.PRESENTED_IMAGE_SIMPLE} />
   return (
     <div>
-      <Descriptions column={3} size="small" bordered style={{ marginBottom: 12 }} labelStyle={{ fontSize: 12 }} contentStyle={{ fontSize: 13 }}>
+      <Descriptions
+        column={3}
+        size="small"
+        bordered
+        style={{ marginBottom: 12 }}
+        labelStyle={{ fontSize: 12 }}
+        contentStyle={{ fontSize: 13 }}
+      >
         <Descriptions.Item label="预估会话数">{plan.estimated_sessions}</Descriptions.Item>
         <Descriptions.Item label="单会话最大轮数">{plan.budget?.max_turns_per_session ?? '—'}</Descriptions.Item>
         <Descriptions.Item label="总轮数上限">{plan.budget?.total_max_turns ?? '—'}</Descriptions.Item>
@@ -31,25 +52,38 @@ function PlanView({ ev }: { ev: IntelligentEval }) {
       </Space>
 
       <div style={{ fontSize: 13, fontWeight: 500, marginBottom: 6 }}>虚拟用户</div>
-      <Space direction="vertical" size={4} style={{ width: '100%', marginBottom: 12 }}>
+      <Row gutter={[12, 6]} style={{ marginBottom: 12 }}>
         {(plan.virtual_users ?? []).map((u, i) => (
-          <div key={i} style={{ fontSize: 13, color: colors.textSecondary }}>
-            <b style={{ color: colors.text }}>{personaLabel(u.persona)}</b> · 目标：{u.goal}
+          <Col span={12} key={i}>
+            <div style={{
+              fontSize: 13, color: colors.textSecondary, lineHeight: 1.5,
+              padding: '6px 10px', background: colors.bgSubtle, borderRadius: 6,
+            }}>
+              <b style={{ color: colors.text }}>{personaLabel(u.persona)}</b> · {u.goal}
             </div>
+          </Col>
         ))}
-      </Space>
+      </Row>
 
       <div style={{ fontSize: 13, fontWeight: 500, marginBottom: 6 }}>时间分布</div>
-      <Space direction="vertical" size={4} style={{ width: '100%', marginBottom: 12 }}>
-        {(plan.time_distribution ?? []).map((t, i) => (
-          <div key={i} style={{ fontSize: 13, color: colors.textSecondary }}>
-            <Tag style={{ margin: 0, fontSize: 12 }}>{t.time_slot}</Tag> {t.sessions} 个会话 · {t.scenario}
-          </div>
-        ))}
-      </Space>
+      <Table
+        size="small"
+        rowKey={(t) => t.time_slot}
+        dataSource={plan.time_distribution ?? []}
+        pagination={false}
+        style={{ marginBottom: 12 }}
+        columns={[
+          {
+            title: '时段', dataIndex: 'time_slot', width: 100,
+            render: (v: string) => <Tag style={{ margin: 0, fontSize: 12 }}>{v}</Tag>,
+          },
+          { title: '会话数', dataIndex: 'sessions', width: 70 },
+          { title: '场景说明', dataIndex: 'scenario', render: (v: string) => <span style={{ fontSize: 12, color: colors.textSecondary }}>{v}</span> },
+        ]}
+      />
 
       {plan.completion_criteria && (
-        <div style={{ fontSize: 13, color: colors.textSecondary }}>
+        <div style={{ fontSize: 13, color: colors.textSecondary, lineHeight: 1.6 }}>
           <b style={{ color: colors.text }}>完成标准：</b>{plan.completion_criteria}
         </div>
       )}
@@ -63,19 +97,22 @@ interface EvalOverviewProps {
 }
 
 /**
- * 评估详情"概览"子视图（纯展示）：基本信息、用户输入、粗计划、会话进度。
+ * 评估详情"概览"子视图（纯展示）：核心信息、用户输入、会话进度。
  * 审批/取消等动作由评估列表页的详情抽屉头部统一管理。
  */
 export default function EvalOverview({ ev, targetName }: EvalOverviewProps) {
   const meta = EVAL_STATUS[ev.status] ?? { label: ev.status, color: 'default' }
   const showSessions = ev.status === 'executing' || ev.status === 'completed'
   const sessions = showSessions ? ev.sessions ?? [] : []
+  const estimated = ev.plan?.estimated_sessions ?? ev.session_count
+  const hasSeeds = Object.keys(ev.seeds ?? {}).length > 0
 
   return (
     <div style={{ display: 'flex', flexDirection: 'column', gap: 16 }}>
+      {/* 第一行：核心信息（基本信息 + 粗计划） */}
       <Row gutter={16}>
         <Col span={8}>
-          <Card size="small" title="基本信息" style={sectionCard}>
+          <Card size="small" title="基本信息" style={{ ...sectionCard, height: '100%' }}>
             <Descriptions column={1} size="small" labelStyle={{ fontSize: 12, color: colors.textSecondary }} contentStyle={{ fontSize: 13 }}>
               <Descriptions.Item label="评测对象">{targetName}</Descriptions.Item>
               <Descriptions.Item label="状态">
@@ -85,7 +122,7 @@ export default function EvalOverview({ ev, targetName }: EvalOverviewProps) {
               <Descriptions.Item label="创建时间">{formatDateTime(ev.created_at)}</Descriptions.Item>
               <Descriptions.Item label="开始时间">{formatDateTime(ev.started_at)}</Descriptions.Item>
               <Descriptions.Item label="完成时间">{formatDateTime(ev.completed_at)}</Descriptions.Item>
-              <Descriptions.Item label="会话进度">{ev.completed_sessions}/{ev.plan?.estimated_sessions ?? ev.session_count}</Descriptions.Item>
+              <Descriptions.Item label="会话进度">{ev.completed_sessions}/{estimated}</Descriptions.Item>
             </Descriptions>
           </Card>
         </Col>
@@ -115,17 +152,45 @@ export default function EvalOverview({ ev, targetName }: EvalOverviewProps) {
               <PlanView ev={ev} />
             </Card>
           )}
+        </Col>
+      </Row>
 
+      {/* 第二行：用户输入（种子集独立放大区） */}
+      <Card size="small" title="用户输入">
+        <Row gutter={16}>
+          <Col span={6}><FieldBlock label="评估目标" content={ev.goal} /></Col>
+          <Col span={6}><FieldBlock label="考察意图" content={ev.intent} /></Col>
+          <Col span={4}><FieldBlock label="角色描述" content={ev.role_description} /></Col>
+          <Col span={8}>
+            <div style={{ fontSize: 12, color: colors.textSecondary, marginBottom: 4 }}>种子集</div>
+            {hasSeeds ? (
+              <pre style={{
+                margin: 0, fontSize: 12, lineHeight: 1.6, background: colors.bgSubtle,
+                padding: '12px 16px', borderRadius: 6, overflowX: 'auto',
+              }}>
+                {JSON.stringify(ev.seeds, null, 2)}
+              </pre>
+            ) : (
+              <div style={{
+                fontSize: 13, padding: '8px 12px', background: colors.bgSubtle, borderRadius: 6,
+              }}>
+                —
+              </div>
+            )}
+          </Col>
+        </Row>
+      </Card>
+
+      {/* 第三行：会话进度（全宽） */}
       {showSessions && (
         <Card
           size="small"
-              title={`会话进度（${ev.completed_sessions}/${ev.plan?.estimated_sessions ?? ev.session_count}）`}
-              style={sectionCard}
+          title={`会话进度（${ev.completed_sessions}/${estimated}）`}
           extra={(
             <Progress
-                  percent={(ev.plan?.estimated_sessions ?? ev.session_count) ? Math.round((ev.completed_sessions / (ev.plan?.estimated_sessions ?? ev.session_count)) * 100) : 0}
+              percent={estimated ? Math.round((ev.completed_sessions / estimated) * 100) : 0}
               size="small"
-                  style={{ width: 140 }}
+              style={{ width: 160 }}
             />
           )}
         >
@@ -144,7 +209,7 @@ export default function EvalOverview({ ev, targetName }: EvalOverviewProps) {
                   padding: '8px 0', borderBottom: `1px solid ${colors.border}`,
                 }}
               >
-                    <b style={{ fontSize: 13, color: colors.text }}>{personaLabel(s.persona)}</b>
+                <b style={{ fontSize: 13, color: colors.text, minWidth: 80 }}>{personaLabel(s.persona)}</b>
                 <Tag color={sMeta.color} style={{ margin: 0, fontSize: 12 }}>{sMeta.label}</Tag>
                 {s.dimension && <Tag style={{ margin: 0, fontSize: 12 }}>{s.dimension}</Tag>}
                 <span style={{ fontSize: 13, color: colors.textSecondary, flex: 1, minWidth: 120 }}>{s.goal}</span>
@@ -162,56 +227,6 @@ export default function EvalOverview({ ev, targetName }: EvalOverviewProps) {
           )}
         </Card>
       )}
-        </Col>
-      </Row>
-
-      <Card size="small" title="用户输入">
-        <Row gutter={16}>
-          <Col span={8}>
-            <div style={{ marginBottom: 12 }}>
-              <div style={{ fontSize: 12, color: colors.textSecondary, marginBottom: 4 }}>评估目标</div>
-              <div style={{
-                fontSize: 13, padding: '8px 12px', background: colors.bgSubtle,
-                borderRadius: 6, whiteSpace: 'pre-wrap', maxHeight: 120, overflowY: 'auto',
-              }}>
-                {ev.goal || '—'}
-              </div>
-            </div>
-            <div style={{ marginBottom: 12 }}>
-              <div style={{ fontSize: 12, color: colors.textSecondary, marginBottom: 4 }}>考察意图</div>
-              <div style={{
-                fontSize: 13, padding: '8px 12px', background: colors.bgSubtle,
-                borderRadius: 6, whiteSpace: 'pre-wrap', maxHeight: 100, overflowY: 'auto',
-              }}>
-                {ev.intent || '—'}
-              </div>
-            </div>
-            <div>
-              <div style={{ fontSize: 12, color: colors.textSecondary, marginBottom: 4 }}>角色描述</div>
-              <div style={{
-                fontSize: 13, padding: '8px 12px', background: colors.bgSubtle,
-                borderRadius: 6, whiteSpace: 'pre-wrap', maxHeight: 100, overflowY: 'auto',
-              }}>
-                {ev.role_description || '—'}
-              </div>
-            </div>
-          </Col>
-          <Col span={16}>
-            <div style={{ fontSize: 12, color: colors.textSecondary, marginBottom: 4 }}>种子集</div>
-            {Object.keys(ev.seeds ?? {}).length === 0 ? (
-              <div style={{ fontSize: 13, padding: '8px 12px', background: colors.bgSubtle, borderRadius: 6 }}>—</div>
-            ) : (
-              <pre style={{
-                margin: 0, fontSize: 12, background: colors.bgSubtle,
-                padding: '12px 16px', borderRadius: 6, overflowX: 'auto',
-                maxHeight: 300, overflowY: 'auto', lineHeight: 1.6,
-              }}>
-                {JSON.stringify(ev.seeds, null, 2)}
-              </pre>
-            )}
-          </Col>
-        </Row>
-      </Card>
     </div>
   )
 }