feat: persistent Zabbix-style sidebar on all pages, rename Dashboard to Обзор

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

frontend/src/views/DashboardView.vue

@@ -1,16 +1,6 @@
 <template>
-  <div class="dashboard-layout">
-    <aside class="dashboard-sidebar">
-      <div class="dashboard-sidebar-title">{{ appTitle }}</div>
-      <RouterLink to="/dashboard">Dashboard</RouterLink>
-      <RouterLink to="/events">События</RouterLink>
-      <RouterLink to="/reports">Отчёты</RouterLink>
-      <RouterLink to="/problems">Проблемы</RouterLink>
-      <RouterLink to="/hosts">Хосты</RouterLink>
-      <button type="button" class="secondary" @click="logout">Выход</button>
-    </aside>
-    <section class="dashboard-content">
-      <h1>Dashboard</h1>
+  <div class="overview-page">
+      <h1>Обзор</h1>
 
       <p v-if="error" class="error">{{ error }}</p>
 
@@ -293,7 +283,6 @@
     </div>
 
       </template>
-    </section>
   </div>
 </template>
 
@@ -302,10 +291,8 @@
 <script setup lang="ts">
 
 import { onMounted, onUnmounted, ref } from "vue";
-import { useRouter } from "vue-router";
 
-import { apiFetch, clearToken, getToken, type DashboardSummary, type EventSummary } from "../api";
-import { APP_VERSION_LABEL } from "../version";
+import { apiFetch, getToken, type DashboardSummary, type EventSummary } from "../api";
 
 
 
@@ -322,15 +309,6 @@ const lastKnownEventDbId = ref<number | null>(null);
 let eventSource: EventSource | null = null;
 
 let refreshingRecent = false;
-const router = useRouter();
-const appTitle = APP_VERSION_LABEL;
-
-function logout() {
-  clearToken();
-  router.push("/login");
-}
-
-
 
 function formatDt(iso: string) {
 
@@ -570,56 +548,6 @@ onUnmounted(() => {
 
 <style scoped>
 
-.dashboard-layout {
-
-  display: grid;
-
-  grid-template-columns: max-content minmax(0, 1fr);
-
-  gap: 1rem;
-
-}
-
-.dashboard-sidebar {
-
-  display: flex;
-
-  flex-direction: column;
-
-  gap: 0.5rem;
-
-  background: #1a2332;
-
-  border: 1px solid #2a3441;
-
-  border-radius: 8px;
-
-  padding: 0.9rem;
-
-  align-self: start;
-
-  width: max-content;
-
-}
-
-.dashboard-sidebar-title {
-
-  font-weight: 700;
-
-  color: #fff;
-
-  margin-bottom: 0.5rem;
-
-  white-space: nowrap;
-
-}
-
-.dashboard-content {
-
-  min-width: 0;
-
-}
-
 .dash-table-scroll {
 
   max-height: 21rem;