refactor: rename stock-lab → stock (graduation)

- git mv stock-lab/ → stock/
- docker-compose.yml: 서비스 키 + container_name + build.context +
  frontend.depends_on + agent-office STOCK_LAB_URL → STOCK_URL
- agent-office/app: config.py, service_proxy.py, agents/stock.py, tests/
  STOCK_LAB_URL → STOCK_URL
- nginx/default.conf: proxy_pass http://stock-lab → http://stock (3 lines)
- CLAUDE.md / README.md / STATUS.md / scripts/ 문구 갱신
- stock/ 내부 자기 참조 갱신

lab 네이밍 정책 (feedback_lab_naming.md) graduation.
API URL / Python import / DB 파일명 변경 없음.

stock/app/screener/ai_news/scraper.py

@@ -0,0 +1,46 @@
+"""[DEPRECATED] 네이버 finance 종목 뉴스 스크래핑.
+
+본 모듈은 ai_news Phase 1 (2026-05-14) 에서 더 이상 파이프라인에서 사용되지 않음.
+데이터 소스는 stock 의 articles 테이블 (ai_news/articles_source.py) 로 전환됨.
+
+삭제 시점: Phase 2 (DART 도입) 결정 후. IC 검증 4주 누적 후 노드 활성화
+여부에 따라 본 모듈을 (a) 완전 삭제 또는 (b) ensemble fallback 으로 재활용.
+"""
+
+from __future__ import annotations
+
+import logging
+from typing import Any, Dict, List
+
+from bs4 import BeautifulSoup
+
+log = logging.getLogger(__name__)
+
+NAVER_NEWS_URL = "https://finance.naver.com/item/news_news.naver"
+NAVER_HEADERS = {
+    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36",
+    "Referer": "https://finance.naver.com/",
+}
+
+
+async def fetch_news(client, ticker: str, n: int = 5) -> List[Dict[str, Any]]:
+    """Scrape top N news headlines for a ticker. Returns [] on any failure."""
+    try:
+        r = await client.get(NAVER_NEWS_URL, params={"code": ticker, "page": 1})
+    except Exception as e:
+        log.warning("ai_news scrape http error for %s: %s", ticker, e)
+        return []
+    if r.status_code != 200:
+        return []
+    soup = BeautifulSoup(r.text, "lxml")
+    out: List[Dict[str, Any]] = []
+    for row in soup.select("table.type5 tbody tr")[:n]:
+        title_el = row.select_one("td.title a")
+        date_el = row.select_one("td.date")
+        if not title_el or not date_el:
+            continue
+        out.append({
+            "title": title_el.get_text(strip=True),
+            "date": date_el.get_text(strip=True),
+        })
+    return out