feat: 显示机器人故障原因

frontend/src/components/NetworkPanel.vue

@@ -84,6 +84,10 @@ function legSessions(link: LinkTelemetry | null): Array<{ name: string; data: Li
     </div>
 
     <div class="summary telemetry-strip">
+      <p><strong>Robot Fault:</strong> {{ network?.robot_health?.fault_reason ?? 'n/a' }}</p>
+      <p><strong>Recovery State:</strong> {{ network?.robot_health?.recovery_state ?? 'n/a' }}</p>
+      <p><strong>Health Confidence:</strong> {{ network?.robot_health?.confidence ?? 'n/a' }}</p>
+      <p><strong>Health Updated:</strong> {{ formatTime(network?.robot_health?.updated_at) }}</p>
       <p><strong>Transport:</strong> {{ network?.transport ?? 'n/a' }} / {{ network?.source_mode ?? 'n/a' }}</p>
       <p><strong>Telemetry Peer:</strong> {{ network?.telemetry_receiver?.peer_id ?? 'n/a' }}</p>
       <p><strong>Telemetry Registered:</strong> {{ network?.telemetry_receiver?.registered ? 'yes' : 'no' }}</p>