Consolidate Organization schema, add ItemList/Offer markup, expand FAQ

- Merge the duplicate Organization/LocalBusiness JSON-LD blocks (home's
  LocalBusiness + o-kompanii's Organization) into one shared
  getOrganizationSchema() call rendered on every page. Deliberately NOT
  wired through the root layout: fetches there get frozen into the
  static shell at build time (backend unreachable during image build)
  and never revalidate, silently serving stale data to crawlers - each
  page calls it directly instead, where revalidation is proven to work.
- Add optional ItemList schema on /uslugi and Offer/OfferCatalog schema
  on /aktsii; entity pages (/uslugi/[slug] Service, /blog/[slug]
  Article) reference the organization via @id instead of duplicating it.
- Add 8 more real FAQ entries (pricing model, contract terms,
  onboarding time, hybrid IT staff setup, supported stacks, backups,
  152-FZ compliance, escalation) and give every FAQ its own slug and
  dedicated /faq/[slug] page with its own title/H1/FAQPage schema,
  modeled on the one-topic-per-page pattern (h/t remontka.pro).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_013otXCiTZsxdZ4SJKZ9wUky

public-site/app/kontakty/page.jsx

@@ -2,6 +2,7 @@ import Header from '../../components/Header.jsx';
 import Footer from '../../components/Footer.jsx';
 import Contact from '../../components/sections/Contact.jsx';
 import { serverApi } from '../../lib/serverApi.js';
+import { getOrganizationSchema } from '../../lib/schema.js';
 
 export const metadata = {
   title: 'Контакты',
@@ -10,10 +11,12 @@ export const metadata = {
 };
 
 export default async function ContactPage() {
-  const contact = await serverApi.getContact();
+  const [contact, orgSchema] = await Promise.all([serverApi.getContact(), getOrganizationSchema()]);
 
   return (
     <div>
+      {/* eslint-disable-next-line react/no-danger */}
+      <script type="application/ld+json" dangerouslySetInnerHTML={{ __html: JSON.stringify(orgSchema) }} />
       <Header />
       <Contact contact={contact} headingLevel="h1" />
       <Footer />