feat: Ollama qwen3:14b 기반 AI 뉴스 요약 + 텔레그램 통합 허브

- stock-lab: POST /api/stock/news/summarize 추가 (Ollama /api/generate 호출, 토큰/duration 추적)
- agent-office: telegram 패키지 분해 (client/formatter/messaging/webhook/router/agent_registry)
- send_agent_message 통합 API로 에이전트 중립 메시지 포맷 표준화
- 텔레그램 → 에이전트 명령 라우터 (/status, /stock news, /music credits 등)
- 토큰 사용량 집계 API 및 GET /agents/{id}/token-usage

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

agent-office/app/service_proxy.py

@@ -18,6 +18,18 @@ async def fetch_stock_indices() -> Dict[str, Any]:
     resp.raise_for_status()
     return resp.json()
 
+async def summarize_stock_news(limit: int = 15) -> Dict[str, Any]:
+    """stock-lab의 AI 요약 엔드포인트 호출.
+    반환: {"summary": str, "tokens": {...}, "model": str, "duration_ms": int, "article_count": int}
+    """
+    async with httpx.AsyncClient(timeout=90.0) as client:
+        resp = await client.post(
+            f"{STOCK_LAB_URL}/api/stock/news/summarize",
+            json={"limit": limit},
+        )
+        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()