fix(morning_briefing): CalDAV host.docker.internal 해결, field_reports 컬럼명, Karakeep env var

- CALDAV_BRIDGE_URL: host.docker.internal → 127.0.0.1 치환 (네이티브 실행 대응)
- field_reports: description → summary (실제 스키마 반영)
- KARAKEEP_URL: KARAKEEP_API_URL env var도 체크 (맥미니 .env 호환)

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

morning_briefing.py

@@ -13,8 +13,8 @@ load_dotenv()
 logging.basicConfig(level=logging.INFO, format="%(asctime)s %(levelname)s %(message)s")
 logger = logging.getLogger("morning_briefing")
 
-CALDAV_BRIDGE_URL = os.getenv("CALDAV_BRIDGE_URL", "http://127.0.0.1:8092")
-KARAKEEP_URL = os.getenv("KARAKEEP_URL", "http://localhost:3000")
+CALDAV_BRIDGE_URL = os.getenv("CALDAV_BRIDGE_URL", "http://127.0.0.1:8092").replace("host.docker.internal", "127.0.0.1")
+KARAKEEP_URL = os.getenv("KARAKEEP_API_URL", os.getenv("KARAKEEP_URL", "http://localhost:3000"))
 KARAKEEP_API_KEY = os.getenv("KARAKEEP_API_KEY", "")
 GPU_OLLAMA_URL = os.getenv("GPU_OLLAMA_URL", "http://192.168.1.186:11434")
 SYNOLOGY_CHAT_WEBHOOK_URL = os.getenv("SYNOLOGY_CHAT_WEBHOOK_URL", "")
@@ -84,13 +84,13 @@ def fetch_open_reports() -> list[dict]:
         conn = get_db_connection()
         with conn.cursor() as cur:
             cur.execute(
-                "SELECT category, description, created_at FROM field_reports "
+                "SELECT category, summary, created_at FROM field_reports "
                 "WHERE status = 'open' "
                 "ORDER BY created_at DESC LIMIT 10"
             )
             rows = cur.fetchall()
         conn.close()
-        return [{"category": r[0], "description": r[1], "created_at": r[2]} for r in rows]
+        return [{"category": r[0], "summary": r[1], "created_at": r[2]} for r in rows]
     except Exception as e:
         logger.error(f"Reports fetch failed: {e}")
         return []
@@ -206,7 +206,7 @@ def format_briefing(events: list | None, mails: list | None,
         lines = []
         for r in reports[:limit]:
             cat = r.get("category", "")
-            desc = (r.get("description") or "")[:50]
+            desc = (r.get("summary") or "")[:50]
             created = r.get("created_at")
             date_str = ""
             if created: