feat(dashboard): add boss dashboard H5 and APIs

Implement the mobile dashboard frontend, admin overview APIs, report archive export, and local dev proxy so the boss dashboard can run against real backend data while preserving MSW demos.

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

dashboard-frontend/src/features/boss-dashboard/components/RiskAlertSection.tsx

@@ -0,0 +1,42 @@
+import { Tag } from 'antd-mobile'
+import type { RiskAlert, RiskLevel } from '../types'
+
+type RiskAlertSectionProps = {
+  risks: RiskAlert[]
+}
+
+const levelMeta: Record<RiskLevel, { color: 'danger' | 'warning' | 'default'; label: string }> = {
+  red: { color: 'danger', label: '红色' },
+  yellow: { color: 'warning', label: '黄色' },
+  gray: { color: 'default', label: '灰色' },
+}
+
+export function RiskAlertSection({ risks }: RiskAlertSectionProps) {
+  return (
+    <section className="section-block">
+      <div className="section-title-row">
+        <div>
+          <p className="section-kicker">Risk</p>
+          <h2>风险预警</h2>
+        </div>
+        <span className="risk-count">{risks.length} 条</span>
+      </div>
+      <div className="risk-list">
+        {risks.map((risk) => {
+          const meta = levelMeta[risk.level]
+          return (
+            <button className="risk-item" key={risk.id} type="button">
+              <div className="risk-header">
+                <Tag color={meta.color}>{meta.label}</Tag>
+                <span>{risk.type}</span>
+                <time>{risk.discoveredAt}</time>
+              </div>
+              <strong>{risk.title}</strong>
+              <p>{risk.description}</p>
+            </button>
+          )
+        })}
+      </div>
+    </section>
+  )
+}