Deploy: migrate k3s → Docker; search logic → master-agents-svc

- deploy/k3s удалён, deploy/docker добавлен (Caddyfile, docker-compose, searxng)
- chat-svc: agents/models/prompts удалены, использует llm-svc (LLMClient, EmbeddingClient)
- master-agents-svc: SearchOrchestrator, classifier, researcher, actions, widgets
- web-svc: ChatModelSelector, Optimization, Sources удалены; InputBarPlus; UnregisterSW
- geo-device-svc, localization-svc: Dockerfiles
- docs: 02-k3s-services-spec.md, RUNBOOK/TELEMETRY/WORKING удалены

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

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

@@ -0,0 +1,19 @@
+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 `
+<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}.
+</response_language>`;
+}