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.

scripts/deploy.sh

@@ -7,11 +7,11 @@ flock -n 200 || { echo "Deploy already running, skipping"; exit 0; }
 
 # ── 서비스 목록 (한 곳에서만 관리) ──
 # docker compose 서비스명 (deployer 제외 — 자기 자신을 재빌드하면 스크립트 중단)
-BUILD_TARGETS="lotto travel-proxy stock-lab music-lab blog-lab realestate-lab agent-office personal packs-lab frontend"
+BUILD_TARGETS="lotto travel-proxy stock music-lab blog-lab realestate-lab agent-office personal packs-lab frontend"
 # 컨테이너 이름 (고아 정리용)
-CONTAINER_NAMES="lotto stock-lab music-lab blog-lab realestate-lab agent-office personal packs-lab travel-proxy frontend"
+CONTAINER_NAMES="lotto stock music-lab blog-lab realestate-lab agent-office personal packs-lab travel-proxy frontend"
 # 헬스체크 대상
-HEALTH_ENDPOINTS="lotto stock-lab travel-proxy music-lab blog-lab realestate-lab agent-office personal packs-lab"
+HEALTH_ENDPOINTS="lotto stock travel-proxy music-lab blog-lab realestate-lab agent-office personal packs-lab"
 # data 디렉토리 (packs-lab은 별도 media/packs 사용)
 DATA_DIRS="music stock blog realestate agent-office personal"