fix: asyncio.create_task를 await로 수정

backend/main.py

@@ -158,7 +158,7 @@ class LoginRequest(BaseModel):
     password: str
 
 @app.post("/api/auth/login")
-def login(req: LoginRequest, conn=Depends(get_db)):
+async def login(req: LoginRequest, conn=Depends(get_db)):
     cur = conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
     cur.execute("SELECT * FROM users WHERE username = %s", (req.username,))
     user = cur.fetchone()
@@ -180,8 +180,7 @@ def login(req: LoginRequest, conn=Depends(get_db)):
         )
         conn.commit()
         if locked:
-            import asyncio
-            asyncio.create_task(notify_discord_only(
+            await notify_discord_only(
                 title="🔒 계정 잠금 발생",
                 message=(
                     f"사용자: `{req.username}`\n"
@@ -189,7 +188,7 @@ def login(req: LoginRequest, conn=Depends(get_db)):
                     f"관리자 페이지에서 잠금 해제 또는 임시 비밀번호를 발급해주세요."
                 ),
                 color=0xe74c3c
-            ))
+            )
             raise HTTPException(status_code=403, detail="Account locked due to too many failed attempts. Please contact admin.")
         remaining = MAX_LOGIN_ATTEMPTS - attempts
         raise HTTPException(status_code=401, detail=f"Invalid credentials. {remaining} attempts remaining.")
@@ -372,15 +371,14 @@ async def reset_password(user_id: int, token=Depends(require_admin), conn=Depend
     )
     conn.commit()
     if user:
-        import asyncio
-        asyncio.create_task(notify_discord_only(
+        await notify_discord_only(
             title="🔑 임시 비밀번호 발급",
             message=(
                 f"관리자 `{token['username']}` 이(가) 임시 비밀번호를 발급했습니다.\n"
                 f"대상 사용자: `{user['username']}`"
             ),
             color=0x3498db
-        ))
+        )
     return {"ok": True, "temp_password": temp_pw}
 
 # ─── Admin: 계정 잠금 해제 ───────────────────────────────