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/tests/test_ai_news_analyzer.py

@@ -0,0 +1,70 @@
+import json
+import pytest
+from unittest.mock import AsyncMock, MagicMock
+
+from app.screener.ai_news import analyzer
+
+
+def _mk_llm(content_text: str, in_tokens: int = 100, out_tokens: int = 20):
+    llm = AsyncMock()
+    resp = MagicMock()
+    block = MagicMock()
+    block.text = content_text
+    resp.content = [block]
+    resp.usage = MagicMock(input_tokens=in_tokens, output_tokens=out_tokens)
+    llm.messages = MagicMock()
+    llm.messages.create = AsyncMock(return_value=resp)
+    return llm
+
+
+NEWS = [
+    {"title": "삼성전자, HBM 양산", "summary": "1분기 영업이익 사상 최대", "pub_date": "2026-05-14"},
+    {"title": "메모리 가격 반등", "summary": "", "pub_date": "2026-05-14"},
+]
+
+
+@pytest.mark.asyncio
+async def test_score_sentiment_success_parses_json():
+    llm = _mk_llm(json.dumps({"score": 7.5, "reason": "HBM 호재"}))
+    out = await analyzer.score_sentiment(llm, "005930", NEWS, name="삼성전자")
+    assert out["ticker"] == "005930"
+    assert out["score_raw"] == 7.5
+    assert out["reason"] == "HBM 호재"
+    assert out["news_count"] == 2
+    assert out["tokens_input"] == 100
+    assert out["tokens_output"] == 20
+
+
+@pytest.mark.asyncio
+async def test_score_sentiment_json_parse_fail_returns_zero():
+    llm = _mk_llm("not valid json")
+    out = await analyzer.score_sentiment(llm, "005930", NEWS)
+    assert out["score_raw"] == 0.0
+    assert "parse fail" in out["reason"]
+    assert out["tokens_input"] == 100  # 호출은 발생했음
+
+
+@pytest.mark.asyncio
+async def test_score_sentiment_clamps_out_of_range():
+    llm = _mk_llm(json.dumps({"score": 15.0, "reason": "초강세"}))
+    out = await analyzer.score_sentiment(llm, "005930", NEWS)
+    assert out["score_raw"] == 10.0  # +10 클램프
+
+
+@pytest.mark.asyncio
+async def test_score_sentiment_clamps_negative_out_of_range():
+    llm = _mk_llm(json.dumps({"score": -42.0, "reason": "초악재"}))
+    out = await analyzer.score_sentiment(llm, "005930", NEWS)
+    assert out["score_raw"] == -10.0
+
+
+@pytest.mark.asyncio
+async def test_score_sentiment_includes_summary_in_prompt():
+    """summary 가 있으면 prompt 에 포함, 없으면 title 만."""
+    llm = _mk_llm(json.dumps({"score": 5.0, "reason": "ok"}))
+    await analyzer.score_sentiment(llm, "005930", NEWS, name="삼성전자")
+    call = llm.messages.create.call_args
+    user_msg = call.kwargs["messages"][0]["content"]
+    assert "1분기 영업이익 사상 최대" in user_msg  # summary 포함
+    assert "삼성전자, HBM 양산" in user_msg  # title 포함
+    assert "2026-05-14" in user_msg  # pub_date 포함