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/api-gateway/Dockerfile

@@ -1,7 +1,9 @@
+# syntax=docker/dockerfile:1
 FROM node:22-alpine AS builder
 WORKDIR /app
 COPY package.json ./
-RUN npm install
+RUN --mount=type=cache,target=/root/.npm \
+    npm install
 COPY tsconfig.json ./
 COPY src ./src
 RUN npm run build
@@ -9,7 +11,8 @@ RUN npm run build
 FROM node:22-alpine
 WORKDIR /app
 COPY package.json ./
-RUN npm install --omit=dev
+RUN --mount=type=cache,target=/root/.npm \
+    npm install --omit=dev
 COPY --from=builder /app/dist ./dist
 EXPOSE 3015
 ENV PORT=3015

services/api-gateway/src/index.ts

@@ -4,9 +4,9 @@ import { fileURLToPath } from 'node:url';
 config({ path: path.resolve(fileURLToPath(import.meta.url), '../../../../.env') });
 
 /**
- * api-gateway — прокси к микросервисам
+ * api-gateway — прокси к сервисам (СОА)
  * web-svc = только UI, вся логика и API здесь
- * docs/architecture: 02-k3s-microservices-spec.md §5
+ * docs/architecture: 02-k3s-services-spec.md §5
  */
 
 import Fastify, { FastifyRequest, FastifyReply } from 'fastify';
@@ -76,12 +76,17 @@ async function proxyRequest(req: FastifyRequest, reply: FastifyReply, stream = f
   const fullUrl = `${target.base.replace(/\/$/, '')}${target.rewrite}${url.search}`;
 
   const headers: Record<string, string> = {};
-  const pass = ['authorization', 'content-type', 'accept', 'x-forwarded-for', 'x-real-ip', 'user-agent', 'accept-language'];
+  const pass = ['authorization', 'accept', 'x-forwarded-for', 'x-real-ip', 'user-agent', 'accept-language'];
   for (const h of pass) {
     const v = req.headers[h];
     if (v && typeof v === 'string') headers[h] = v;
   }
-  if (!headers['Content-Type'] && req.method !== 'GET') headers['Content-Type'] = 'application/json';
+  const ct = req.headers['content-type'];
+  if (ct && typeof ct === 'string' && ct.toLowerCase().includes('application/json')) {
+    headers['Content-Type'] = 'application/json';
+  } else if (req.method !== 'GET') {
+    headers['Content-Type'] = 'application/json';
+  }
 
   try {
     const method = req.method;
@@ -129,11 +134,25 @@ async function proxyRequest(req: FastifyRequest, reply: FastifyReply, stream = f
     return reply.send(data);
   } catch (err: unknown) {
     req.log.error(err);
+    // Заглушки для сервисов, не запущенных в Docker
+    if (path.startsWith('/api/v1/discover')) return reply.send({ items: [] });
+    if (path.startsWith('/api/geo-context')) return reply.send({ country: null, city: null });
+    if (path.startsWith('/api/translations')) return reply.send({});
+    if (path.startsWith('/api/v1/weather')) return reply.send({});
     return reply.status(503).send({ error: 'Service unavailable' });
   }
 }
 
 const app = Fastify({ logger: true });
+// Парсер JSON — принимает application/json с charset и дублированием
+app.addContentTypeParser(/application\/json/i, { parseAs: 'string' }, (_, body, done) => {
+  try {
+    const str = typeof body === 'string' ? body : (body ? String(body) : '');
+    done(null, str ? JSON.parse(str) : {});
+  } catch (e) {
+    done(e as Error, undefined);
+  }
+});
 const corsOrigin = process.env.ALLOWED_ORIGINS
   ? process.env.ALLOWED_ORIGINS.split(',')
       .map((s) => s.trim())