Improve explorer subsystem posture and wallet visibility

frontend/src/components/explorer/OperationsHubPage.tsx

@@ -9,6 +9,7 @@ import { useUiMode } from '@/components/common/UiModeContext'
 import { summarizeChainActivity } from '@/utils/activityContext'
 import ActivityContextPanel from '@/components/common/ActivityContextPanel'
 import FreshnessTrustNote from '@/components/common/FreshnessTrustNote'
+import SubsystemPosturePanel from '@/components/common/SubsystemPosturePanel'
 import { resolveEffectiveFreshness } from '@/utils/explorerFreshness'
 import { statsApi, type ExplorerStats } from '@/services/api/stats'
 
@@ -203,6 +204,13 @@ export default function OperationsHubPage({
           bridgeStatus={bridgeStatus}
           scopeLabel="This page reflects mission-control freshness, public bridge status, and explorer-served config surfaces."
         />
+        <SubsystemPosturePanel
+          className="mt-3"
+          subsystems={bridgeStatus?.data?.subsystems}
+          title="Operations Subsystem Posture"
+          preferredKeys={['rpc_head', 'tx_index', 'bridge_relay_monitoring', 'stats_summary', 'freshness_queries']}
+          scopeLabel="Operations posture is grounded in the same backend subsystem truth used for chain activity, route inventory, and bridge monitoring."
+        />
       </div>
 
       <div className="mb-6 grid gap-4 md:grid-cols-2 xl:grid-cols-4">