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/web-svc/Dockerfile

@@ -1,13 +1,16 @@
+# syntax=docker/dockerfile:1
 # web-svc — Next.js UI, standalone output
 FROM node:22-alpine AS builder
 WORKDIR /app
 COPY package.json package-lock.json ./
 COPY services ./services
-RUN npm ci
+# npm cache — ускоряет npm ci, НЕ трогает билд
+RUN --mount=type=cache,target=/root/.npm \
+    npm ci
 ENV NEXT_TELEMETRY_DISABLED=1
-# K8s: rewrites запекаются при сборке, нужен URL api-gateway
 ARG API_GATEWAY_URL=http://api-gateway.gooseek:3015
 ENV API_GATEWAY_URL=${API_GATEWAY_URL}
+# БЕЗ cache для .next — иначе старый билд попадает в прод
 RUN npm run build -w web-svc
 
 FROM node:22-alpine AS runner