Add docker-service stubs and ignore runtime artifacts.

This tracks compose and source files for mcp-stub/phoenix while excluding local runtime data and wheel artifacts.

Made-with: Cursor

mcp-stub/README.md

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+# MCP Stub Service
+
+Минимальный MCP server (Streamable HTTP) для локальной интеграции.
+
+## Запуск
+
+```bash
+docker compose up --build
+```
+
+Сервис поднимется на `http://localhost:8081`.
+MCP endpoint: `http://localhost:8081/mcp`.
+
+## Инструменты MCP
+
+- `search_news_sources(url: str)`
+- `parse_article(url: str)`
+- `extract_publication_date(article_text: str)`
+- `rank_sources_by_date(items: list[dict])`
+- `generate_summary(items: list[dict])`
+
+Пример проверки через Python MCP client:
+
+```bash
+python - <<'PY'
+import asyncio
+from mcp import ClientSession
+from mcp.client.streamable_http import streamablehttp_client
+
+async def main():
+    async with streamablehttp_client(url="http://localhost:8081/mcp") as (read, write, *_):
+        async with ClientSession(read, write) as session:
+            await session.initialize()
+            result = await session.call_tool("search_news_sources", {"url": "https://example.com/news"})
+            print(result.structuredContent)
+
+asyncio.run(main())
+PY
+```