feat: dashboard top hosts/types, problems 24h, drill-down (d2-2)

- Extend /dashboards/summary; Events filters from query (hostname, severity)

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/views/EventsView.vue

@@ -10,6 +10,7 @@
       <option>critical</option>
     </select>
     <input v-model="typeFilter" placeholder="type" @keyup.enter="load(1)" />
+    <input v-model="hostnameFilter" placeholder="hostname" @keyup.enter="load(1)" />
     <button type="button" @click="load(1)">Применить</button>
   </div>
   <p v-if="error" class="error">{{ error }}</p>
@@ -70,6 +71,7 @@ const pageSize = 50;
 const q = ref("");
 const severity = ref("");
 const typeFilter = ref("");
+const hostnameFilter = ref("");
 
 function formatDt(iso: string) {
   return new Date(iso).toLocaleString("ru-RU");
@@ -86,6 +88,7 @@ async function load(p: number) {
     });
     if (severity.value) params.set("severity", severity.value);
     if (typeFilter.value) params.set("type", typeFilter.value);
+    if (hostnameFilter.value.trim()) params.set("hostname", hostnameFilter.value.trim());
     if (q.value.trim()) params.set("q", q.value.trim());
     data.value = await apiFetch<EventListResponse>(`/api/v1/events?${params}`);
   } catch (e) {
@@ -98,6 +101,10 @@ async function load(p: number) {
 onMounted(() => {
   const t = route.query.type;
   if (typeof t === "string" && t) typeFilter.value = t;
+  const sev = route.query.severity;
+  if (typeof sev === "string" && sev) severity.value = sev;
+  const h = route.query.hostname;
+  if (typeof h === "string" && h) hostnameFilter.value = h;
   load(1);
 });
 </script>