fix(agent-office): YouTubeResearchAgent 품질 개선 (동시실행 가드·에러 로깅·타입 수정)

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

agent-office/app/agents/youtube.py

@@ -1,15 +1,20 @@
 # agent-office/app/agents/youtube.py
 import asyncio
+import logging
 from datetime import date
 
+import httpx
+
 from .base import BaseAgent
-from ..db import add_youtube_research_job, update_youtube_research_job
+from ..db import add_youtube_research_job, update_youtube_research_job, add_log
 from ..youtube_researcher import (
-    TARGET_COUNTRIES, TREND_KEYWORDS,
+    TARGET_COUNTRIES, TREND_KEYWORDS, MUSIC_LAB_URL,
     fetch_youtube_trending, fetch_google_trends, fetch_billboard_top20,
     push_to_music_lab,
 )
 
+logger = logging.getLogger(__name__)
+
 
 class YouTubeResearchAgent(BaseAgent):
     agent_id     = "youtube"
@@ -20,6 +25,8 @@ class YouTubeResearchAgent(BaseAgent):
 
     async def on_command(self, command: str, params: dict) -> dict:
         if command == "research":
+            if self.state == "working":
+                return {"ok": False, "message": "이미 수집 중"}
             countries = params.get("countries", TARGET_COUNTRIES)
             asyncio.create_task(self._run_research(countries))
             return {"ok": True, "message": f"리서치 시작: {countries}"}
@@ -59,15 +66,15 @@ class YouTubeResearchAgent(BaseAgent):
 
     async def send_weekly_report(self) -> None:
         """매주 월요일 08:00 — 주간 인사이트 텔레그램 발송."""
-        import httpx
-        from ..youtube_researcher import MUSIC_LAB_URL
         try:
             async with httpx.AsyncClient(timeout=10.0) as client:
                 resp = await client.get(f"{MUSIC_LAB_URL}/api/music/market/report/latest")
                 if resp.status_code != 200:
                     return
                 report = resp.json()
-        except Exception:
+        except Exception as e:
+            add_log(self.agent_id, f"주간 리포트 조회 실패: {e}", level="error")
+            logger.error("send_weekly_report: music-lab 조회 실패: %s", e)
             return
 
         top = report.get("top_genres", [])[:3]
@@ -81,5 +88,6 @@ class YouTubeResearchAgent(BaseAgent):
         try:
             from ..telegram_bot import send_message
             await send_message(text)
-        except (ImportError, Exception):
-            pass
+        except (ImportError, Exception) as e:
+            add_log(self.agent_id, f"주간 리포트 텔레그램 발송 실패: {e}", level="error")
+            logger.error("send_weekly_report: 텔레그램 발송 실패: %s", e)