feat(TASK-12): beta telemetry — report endpoint + settings toggle

Backend: telemetry.report RPC builds anonymous health report with node ID
(SHA-256 hash of pubkey, truncated), version, uptime, container states,
CPU/RAM, federation peers, and recent alerts. Saves latest report to disk.
Requires analytics opt-in (existing analytics.enable/disable flow).

Frontend: "Beta Telemetry" section in Settings with enable/disable toggle.
Shows what data is and isn't collected. Mock backend handles all analytics
and telemetry RPCs.

Privacy: No wallet data, no private keys, no DIDs, no IP addresses.
Node identified by truncated hash only.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

neode-ui/src/views/Settings.vue

@@ -844,6 +844,28 @@
       </div>
     </div>
 
+    <!-- Beta Telemetry Section -->
+    <div class="glass-card px-6 py-6 mb-6">
+      <div class="flex items-center justify-between mb-3">
+        <div>
+          <h2 class="text-xl font-semibold text-white/96 mb-1">Beta Telemetry</h2>
+          <p class="text-sm text-white/60">Help improve Archipelago by sharing anonymous system health data. No wallet data, no keys, no personal info.</p>
+        </div>
+        <button
+          @click="toggleTelemetry"
+          :disabled="telemetryLoading"
+          class="shrink-0 ml-4 px-4 py-2 rounded-lg text-sm font-medium transition-colors"
+          :class="telemetryEnabled ? 'bg-green-500/20 text-green-300 border border-green-500/30 hover:bg-green-500/30' : 'glass-button'"
+        >
+          {{ telemetryLoading ? '...' : telemetryEnabled ? 'Enabled' : 'Enable' }}
+        </button>
+      </div>
+      <div v-if="telemetryEnabled" class="mt-3 text-xs text-white/50 space-y-1">
+        <p>Reporting: version, uptime, container states, CPU/RAM, error alerts.</p>
+        <p>Not reporting: wallet balances, private keys, DIDs, IP addresses.</p>
+      </div>
+    </div>
+
     <!-- Backup & Restore Section -->
     <div class="glass-card px-6 py-6 mb-6">
       <div class="mb-4">
@@ -1091,6 +1113,26 @@ async function saveServerName() {
 
 const version = computed(() => store.serverInfo?.version || '0.0.0')
 const showReleaseNotes = ref(false)
+
+// Telemetry
+const telemetryEnabled = ref(false)
+const telemetryLoading = ref(false)
+async function loadTelemetryStatus() {
+  try {
+    const res = await rpcClient.call<{ enabled: boolean }>({ method: 'analytics.get-status' })
+    telemetryEnabled.value = res.enabled
+  } catch { /* ignore */ }
+}
+async function toggleTelemetry() {
+  telemetryLoading.value = true
+  try {
+    const method = telemetryEnabled.value ? 'analytics.disable' : 'analytics.enable'
+    await rpcClient.call({ method })
+    telemetryEnabled.value = !telemetryEnabled.value
+  } catch { /* ignore */ }
+  telemetryLoading.value = false
+}
+loadTelemetryStatus()
 const serverTorAddressFromStore = computed(() => store.serverInfo?.['tor-address'] || null)
 const torAddressFromRpc = ref<string | null>(null)
 const serverTorAddress = computed(() => serverTorAddressFromStore.value || torAddressFromRpc.value)