done

app/api/trades.py

@@ -6,7 +6,7 @@ from sqlalchemy import select
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.database import get_db
-from app.models import BotTrade
+from app.models import BotTrade, iso_utc
 from app.schemas import BotTrade as BotTradeSchema
 
 router = APIRouter()
@@ -23,8 +23,8 @@ def _trade_to_schema(trade: BotTrade) -> BotTradeSchema:
         pnl_usd=trade.pnl_usd or 0.0,
         hold_seconds=trade.hold_seconds or 0,
         trigger_post_id=trade.trigger_post_id or 0,
-        opened_at=trade.opened_at.isoformat(),
-        closed_at=trade.closed_at.isoformat() if trade.closed_at else "",
+        opened_at=iso_utc(trade.opened_at) or "",
+        closed_at=iso_utc(trade.closed_at) or "",
     )