feat: SSH card UX, agent version sync, persistent ssh_admin_ok (0.11.5)

Silent SSH probe on host card open; manual test feedback auto-hides. Persist ssh_admin_ok in DB (migration 019). After agent update read version from host and refresh UI.

frontend/src/views/HostsView.vue

@@ -96,17 +96,19 @@
 </template>
 
 <script setup lang="ts">
-import { computed, onMounted, ref, watch } from "vue";
+import { computed, onMounted, onUnmounted, ref, watch } from "vue";
 import { useRoute, useRouter } from "vue-router";
 import { useSacLiveEventStream } from "../composables/useSacLiveEventStream";
 import {
   apiFetch,
   fetchHost,
   fetchRecentEvents,
+  type HostDetail,
   type HostListResponse,
   type HostSummary,
 } from "../api";
-import { patchHostSummaryFromDetail } from "../utils/hostsLiveUpdate";
+import { bumpLatestAgentVersion, patchHostSummaryFromDetail } from "../utils/hostsLiveUpdate";
+import { subscribeHostPatch } from "../utils/hostPatchBus";
 import { isAgentVersionOutdated } from "../utils/agentVersion";
 
 const router = useRouter();
@@ -172,6 +174,16 @@ const sortBy = ref<SortKey>(initialSort.sortBy);
 const sortDir = ref<"asc" | "desc">(initialSort.sortDir);
 const deletingId = ref<number | null>(null);
 let patchingHostRow = false;
+let unsubscribeHostPatch: (() => void) | null = null;
+
+function applyHostPatchFromDetail(detail: HostDetail) {
+  if (!data.value) return;
+  const row = data.value.items.find((h) => h.id === detail.id);
+  if (row) {
+    patchHostSummaryFromDetail(row, detail);
+    bumpLatestAgentVersion(data.value.latest_agent_versions, row.product, detail.product_version);
+  }
+}
 
 const { live } = useSacLiveEventStream(() => {
   void patchHostRowFromLatestEvent();
@@ -369,6 +381,12 @@ async function confirmDelete(h: HostSummary) {
 onMounted(() => {
   syncFromRoute();
   loadHosts();
+  unsubscribeHostPatch = subscribeHostPatch(applyHostPatchFromDetail);
+});
+
+onUnmounted(() => {
+  unsubscribeHostPatch?.();
+  unsubscribeHostPatch = null;
 });
 
 watch(