feat: Go backend, enhanced search, new widgets, Docker deploy

Major changes:
- Add Go backend (backend/) with microservices architecture
- Enhanced master-agents-svc: reranker, content-classifier, stealth-crawler,
  proxy-manager, media-search, fastClassifier, language detection
- New web-svc widgets: KnowledgeCard, ProductCard, ProfileCard, VideoCard,
  UnifiedCard, CardGallery, InlineImageGallery, SourcesPanel, RelatedQuestions
- Improved discover-svc with discover-db integration
- Docker deployment improvements (Caddyfile, vendor.sh, BUILD.md)
- Library-svc: project_id schema migration
- Remove deprecated finance-svc and travel-svc
- Localization improvements across services

Made-with: Cursor

services/master-agents-svc/src/lib/prompts/locale.ts

@@ -1,19 +1,17 @@
-const LOCALE_TO_LANGUAGE: Record<string, string> = {
-  ru: 'Russian', en: 'English', de: 'German', fr: 'French', es: 'Spanish',
-  it: 'Italian', pt: 'Portuguese', uk: 'Ukrainian', pl: 'Polish', zh: 'Chinese',
-  ja: 'Japanese', ko: 'Korean', ar: 'Arabic', tr: 'Turkish', be: 'Belarusian',
-  kk: 'Kazakh', sv: 'Swedish', nb: 'Norwegian', da: 'Danish', fi: 'Finnish',
-  cs: 'Czech', sk: 'Slovak', hu: 'Hungarian', ro: 'Romanian', bg: 'Bulgarian',
-  hr: 'Croatian', sr: 'Serbian', el: 'Greek', hi: 'Hindi', th: 'Thai',
-  vi: 'Vietnamese', id: 'Indonesian', ms: 'Malay', he: 'Hebrew', fa: 'Persian',
-};
-
-export function getLocaleInstruction(locale?: string): string {
-  if (!locale) return '';
-  const lang = locale.split('-')[0];
-  const languageName = LOCALE_TO_LANGUAGE[lang] ?? lang;
-  return `
+/** Принудительно русский язык везде */
+const RUSSIAN_RESPONSE_LANGUAGE = `
 <response_language>
-User's locale is ${locale}. Always format your response in ${languageName}, regardless of the language of the query or search results. Even when the discussed content is in another language, respond in ${languageName}.
+Always respond ONLY in Russian. Regardless of the user's query language or search results, format your entire response in Russian.
 </response_language>`;
+
+export const FALLBACK_RESPONSE_LANGUAGE = RUSSIAN_RESPONSE_LANGUAGE;
+
+/**
+ * Build response language instruction. Always Russian.
+ */
+export function getLocaleInstruction(
+  _locale?: string,
+  _detectedLanguage?: string,
+): string {
+  return RUSSIAN_RESPONSE_LANGUAGE;
 }