feat: simplify navigation and add RU/EN home and contacts

- simplify main navigation and hide extra menu items
- make home page more sales-focused with updated hero, benefits and fleet teaser
- add RU/EN handling for home and contacts, including SEO defaults
- integrate basic Strapi homepage API client (no breaking changes)
- update contacts page with messenger buttons and dynamic footer year

Made-with: Cursor

src/api/strapiClient.ts

@@ -0,0 +1,48 @@
+const STRAPI_URL = import.meta.env.VITE_STRAPI_URL || 'http://localhost:1337';
+
+type Locale = 'ru' | 'en';
+
+async function fetchJson(path: string, init?: RequestInit) {
+  const res = await fetch(`${STRAPI_URL}${path}`, {
+    headers: {
+      'Content-Type': 'application/json',
+    },
+    ...init,
+  });
+
+  if (!res.ok) {
+    throw new Error(`Strapi request failed: ${res.status} ${res.statusText}`);
+  }
+
+  return res.json();
+}
+
+export interface HomepageData {
+  heroTitle?: string;
+  heroSubtitle?: string;
+  seoTitle?: string;
+  seoDescription?: string;
+}
+
+export async function getHomepage(locale: Locale): Promise<HomepageData | null> {
+  const query = new URLSearchParams({
+    locale,
+    populate: '*',
+  }).toString();
+
+  const json = await fetchJson(`/api/homepage?${query}`);
+
+  if (!json || !json.data || !json.data.attributes) {
+    return null;
+  }
+
+  const attrs = json.data.attributes;
+
+  return {
+    heroTitle: attrs.heroTitle,
+    heroSubtitle: attrs.heroSubtitle,
+    seoTitle: attrs.seoTitle,
+    seoDescription: attrs.seoDescription,
+  };
+}
+