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/telegram/client.py

@@ -0,0 +1,18 @@
+"""Telegram Bot API 저수준 래퍼."""
+import httpx
+
+from ..config import TELEGRAM_BOT_TOKEN, TELEGRAM_CHAT_ID, TELEGRAM_WEBHOOK_URL
+
+_BASE = "https://api.telegram.org/bot"
+
+
+def _enabled() -> bool:
+    return bool(TELEGRAM_BOT_TOKEN and TELEGRAM_CHAT_ID)
+
+
+async def api_call(method: str, payload: dict) -> dict:
+    if not _enabled():
+        return {"ok": False, "description": "Telegram not configured"}
+    async with httpx.AsyncClient(timeout=10.0) as client:
+        resp = await client.post(f"{_BASE}{TELEGRAM_BOT_TOKEN}/{method}", json=payload)
+        return resp.json()