feat(agent-office): stock holdings run/brief 프록시

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

agent-office/app/service_proxy.py

@@ -88,6 +88,28 @@ async def scrape_stock_news() -> Dict[str, Any]:
         resp.raise_for_status()
         return resp.json()
 
+
+async def stock_holdings_run() -> Dict[str, Any]:
+    """보유종목 시그널 계산 트리거 (EOD, use_llm=True).
+
+    stock BackgroundTask 등록 후 즉시 {ok, queued} 반환.
+    실제 계산은 stock 컨테이너 백그라운드에서 진행 — 여유있게 120s.
+    """
+    async with httpx.AsyncClient(timeout=120.0) as client:
+        resp = await client.post(
+            f"{STOCK_URL}/api/stock/holdings/intel/run",
+            params={"use_llm": True},
+        )
+    resp.raise_for_status()
+    return resp.json()
+
+
+async def stock_holdings_brief() -> Dict[str, Any]:
+    """보유종목 최신 브리핑 payload 조회 (GET, 모듈 레벨 _client 사용)."""
+    resp = await _client.get(f"{STOCK_URL}/api/stock/holdings/intel")
+    resp.raise_for_status()
+    return resp.json()
+
 async def generate_music(payload: dict) -> Dict[str, Any]:
     resp = await _client.post(f"{MUSIC_LAB_URL}/api/music/generate", json=payload)
     resp.raise_for_status()