diff --git a/docs/fleet-recovery-qualification-20261007.md b/docs/fleet-recovery-qualification-20261007.md
index 16321fc6..c395e73c 100644
--- a/docs/fleet-recovery-qualification-20261007.md
+++ b/docs/fleet-recovery-qualification-20261007.md
@@ -165,3 +165,25 @@ The exact app-project typecheck also passed again after the history follow-up,
 with the same 2 GB bound; log `/tmp/archy-fleet-history-typecheck.log`.
 Completed logs and browser fixture sources are archived at
 `~/.local/state/archipelago/release-qualification/fleet-acceptance-20261007/`.
+
+## Alert provenance and cache migration follow-up
+
+Alert rows now reuse the same explicit provenance label as node cards, with a
+wrapping header for narrow displays. Collector alerts do not inherit trust from
+the claimed/truncated node ID. Existing cached node and alert provenance is
+stripped on read: historical unsigned collector responses could supply those
+fields. Content, metrics and staleness remain available; only a fresh corrected
+backend response may restore authenticated labels. Invalid cached alert rows
+are discarded. Regression checks cover cached claimed trust and a later fresh
+response, as well as actual alert-panel labels. This does not authenticate a
+collector identity or replace the required backend gate.
+
+The unchanged combined baseline passed **1,459 tests in 177 files** from a frozen
+771-input copy, all hashes unchanged, at
+`~/.local/state/archipelago/release-qualification/fleet-combined-ui-20261007/`.
+The subsequent three-file alert/cache delta passed **31 focused tests in five
+files** and the exact app-project typecheck (2 GB cap, exit 0), logs
+`/tmp/archy-fleet-alert-cache-corrected.log` and
+`/tmp/archy-fleet-alert-cache-typecheck.log`. This is full baseline plus focused
+delta evidence, not a full-suite rerun after the delta. No production deployment
+or additional artwork investigation occurred.
diff --git a/neode-ui/src/views/fleet/FleetAlerts.vue b/neode-ui/src/views/fleet/FleetAlerts.vue
index dbb18a1c..e7960e5b 100644
--- a/neode-ui/src/views/fleet/FleetAlerts.vue
+++ b/neode-ui/src/views/fleet/FleetAlerts.vue
@@ -20,8 +20,9 @@
           :class="alertSeverityDot(alert.rule)"
         ></span>
         <div class="flex-1 min-w-0">
-          <div class="flex items-center gap-2 mb-0.5">
+          <div class="flex flex-wrap items-center gap-x-2 gap-y-1 mb-0.5">
             <span class="fleet-node-badge">{{ alert.node_id.slice(0, 8) }}</span>
+            <span class="text-xs text-white/50">{{ fleetSourceLabel(alert) }}</span>
             <span class="text-xs text-white/40">{{ alertTypeLabel(alert.rule) }}</span>
           </div>
           <p class="text-sm text-white/80">{{ alert.message }}</p>
@@ -33,7 +34,7 @@
 </template>
 
 <script setup lang="ts">
-import { type FleetAlert, alertSeverityDot, alertTypeLabel, formatTimestamp } from './useFleetData'
+import { type FleetAlert, alertSeverityDot, alertTypeLabel, formatTimestamp, fleetSourceLabel } from './useFleetData'
 
 defineProps<{
   alerts: FleetAlert[]
diff --git a/neode-ui/src/views/fleet/__tests__/FleetPartialFailure.test.ts b/neode-ui/src/views/fleet/__tests__/FleetPartialFailure.test.ts
index 5541b400..495faf42 100644
--- a/neode-ui/src/views/fleet/__tests__/FleetPartialFailure.test.ts
+++ b/neode-ui/src/views/fleet/__tests__/FleetPartialFailure.test.ts
@@ -41,7 +41,7 @@ it('retains previous alerts on malformed refresh without calling them current',
   const wrapper = mount(defineComponent({ setup() { fleet = useFleetData(); return () => null } }))
   try {
     await flushPromises()
-    expect(fleet.fleetAlerts.value).toEqual([alert])
+    expect(fleet.fleetAlerts.value).toMatchObject([alert])
     expect(fleet.alertsErrorMessage.value).toContain('last received alerts')
     const panel = mount(FleetAlerts, { props: { alerts: fleet.fleetAlerts.value, alertsLoading: false, errorMessage: fleet.alertsErrorMessage.value } })
     expect(panel.text()).toContain('Earlier alert')
@@ -111,3 +111,46 @@ it('reports explicitly unavailable history and clears the message when changing
     expect(fleet.nodeHistory.value[0]?.timestamp).toBe('legacy-available')
   } finally { wrapper.unmount() }
 })
+
+
+it('labels alert provenance without treating an unsigned collector as a trusted node', () => {
+  const common = { rule: 'cpu_high', message: 'Fixture alert', timestamp: '2026-10-07T12:00:00Z' }
+  const panel = mount(FleetAlerts, { props: { alertsLoading: false, alerts: [
+    { ...common, node_id: 'collector', source: 'collector', trust_level: 'unverified', identity_authenticated: false },
+    { ...common, node_id: 'trusted', source: 'federation', trust_level: 'trusted', identity_authenticated: true },
+    { ...common, node_id: 'legacy', source: 'federation', trust_level: 'trusted' },
+  ] } })
+  try {
+    const rows = panel.findAll('.fleet-node-badge').map(badge => badge.element.parentElement!.textContent)
+    expect(rows[0]).toContain('Collector · identity unverified')
+    expect(rows[1]).toContain('Trusted federation')
+    expect(rows[2]).toContain('Source unverified')
+    expect(rows[2]).not.toContain('Trusted federation')
+  } finally { panel.unmount() }
+})
+
+
+it('does not authenticate cached report claims before a fresh server response', async () => {
+  const provenance = { source: 'federation', trust_level: 'trusted', identity_authenticated: true }
+  sessionStorage.setItem('archipelago.fleet.cache.v2', JSON.stringify({
+    nodes: [{ node_id: 'cached-node', cpu_pct: 0, ...provenance }],
+    fleetAlerts: [null, { node_id: 'claimed-id', rule: 'cpu_high', message: 'Saved alert', timestamp: '', ...provenance }],
+  }))
+  vi.mocked(rpcClient.call).mockRejectedValue(new Error('Unavailable'))
+  let fleet!: ReturnType<typeof useFleetData>
+  const wrapper = mount(defineComponent({ setup() { fleet = useFleetData(); return () => null } }))
+  try {
+    await flushPromises()
+    expect(fleet.nodes.value[0]).toMatchObject({ cpu_pct: 0, source: 'unknown', trust_level: 'unverified', identity_authenticated: false })
+    expect(fleet.fleetAlerts.value).toHaveLength(1)
+    expect(fleet.fleetAlerts.value[0]).toMatchObject({ message: 'Saved alert', source: 'unknown', trust_level: 'unverified', identity_authenticated: false })
+    const panel = mount(FleetAlerts, { props: { alerts: fleet.fleetAlerts.value, alertsLoading: false } })
+    expect(panel.text()).toContain('Source unverified')
+    expect(panel.text()).not.toContain('Trusted federation')
+    panel.unmount()
+    vi.mocked(rpcClient.call).mockResolvedValue({ nodes: [{ node_id: 'cached-node', ...provenance }], alerts: [{ node_id: 'claimed-id', rule: 'cpu_high', message: 'Fresh alert', timestamp: '', ...provenance }] })
+    await fleet.refreshAll()
+    expect(fleet.nodes.value[0]?.identity_authenticated).toBe(true)
+    expect(fleet.fleetAlerts.value[0]?.identity_authenticated).toBe(true)
+  } finally { wrapper.unmount() }
+})
diff --git a/neode-ui/src/views/fleet/useFleetData.ts b/neode-ui/src/views/fleet/useFleetData.ts
index 5d74b83a..8046632b 100644
--- a/neode-ui/src/views/fleet/useFleetData.ts
+++ b/neode-ui/src/views/fleet/useFleetData.ts
@@ -29,6 +29,9 @@ export interface FleetNode {
 }
 
 export interface FleetAlert {
+  source?: string
+  trust_level?: string
+  identity_authenticated?: boolean
   node_id: string
   rule: string
   message: string
@@ -140,7 +143,7 @@ export function fleetNodeDisplayName(node: FleetNode): string {
   return name || node.node_id.slice(0, 8)
 }
 
-export function fleetSourceLabel(node: FleetNode): string {
+export function fleetSourceLabel(node: Pick<FleetNode, 'source' | 'trust_level' | 'identity_authenticated'>): string {
   if (node.source === 'collector') return 'Collector · identity unverified'
   if (node.source === 'federation' && node.trust_level === 'trusted' && node.identity_authenticated === true) return 'Trusted federation'
   return 'Source unverified'
@@ -237,6 +240,19 @@ type FleetCache = {
 
 const FLEET_CACHE_KEY = 'archipelago.fleet.cache.v2'
 
+function isFleetAlert(alert: unknown): alert is FleetAlert {
+  if (!alert || typeof alert !== 'object') return false
+  const value = alert as Partial<FleetAlert>
+  return typeof value.node_id === 'string' && typeof value.rule === 'string' &&
+    typeof value.message === 'string' && typeof value.timestamp === 'string'
+}
+
+function withoutCachedProvenance<T extends object>(report: T) {
+  // Historical collector payloads could claim provenance. Only a fresh
+  // corrected server response may assign authenticated identity labels.
+  return { ...report, source: 'unknown', trust_level: 'unverified', identity_authenticated: false }
+}
+
 function readFleetCache(): Partial<FleetCache> {
   if (typeof window === 'undefined') return {}
   try {
@@ -244,8 +260,8 @@ function readFleetCache(): Partial<FleetCache> {
     if (!raw) return {}
     const parsed = JSON.parse(raw) as Partial<FleetCache>
     return {
-      nodes: Array.isArray(parsed.nodes) ? parsed.nodes.map(normalizeFleetNode) : [],
-      fleetAlerts: Array.isArray(parsed.fleetAlerts) ? parsed.fleetAlerts : [],
+      nodes: Array.isArray(parsed.nodes) ? parsed.nodes.map(normalizeFleetNode).map(withoutCachedProvenance) : [],
+      fleetAlerts: Array.isArray(parsed.fleetAlerts) ? parsed.fleetAlerts.filter(isFleetAlert).map(withoutCachedProvenance) : [],
       lastRefreshed: typeof parsed.lastRefreshed === 'string' ? parsed.lastRefreshed : '',
       selectedNodeId: typeof parsed.selectedNodeId === 'string' ? parsed.selectedNodeId : null,
       sortBy: parsed.sortBy === 'last-seen' || parsed.sortBy === 'name' ? parsed.sortBy : 'status',
@@ -393,9 +409,7 @@ export function useFleetData() {
         method: 'telemetry.fleet-alerts',
       })
       if (disposed || request !== alertsRequest) return
-      if (!Array.isArray(data?.alerts) || data.alerts.some(alert => !alert ||
-        typeof alert.node_id !== 'string' || typeof alert.rule !== 'string' ||
-        typeof alert.message !== 'string' || typeof alert.timestamp !== 'string')) {
+      if (!Array.isArray(data?.alerts) || !data.alerts.every(isFleetAlert)) {
         throw new Error('Invalid fleet alerts response')
       }
       {