fix: Eagerly load partner relationship for yield domains

backend/app/api/yield_domains.py

@@ -10,6 +10,7 @@ from typing import Optional
 
 from fastapi import APIRouter, Depends, HTTPException, status, Query
 from sqlalchemy import func, and_, or_, Integer, case, select
+from sqlalchemy.orm import selectinload
 from sqlalchemy.ext.asyncio import AsyncSession
 
 from app.api.deps import get_db, get_current_user
@@ -102,9 +103,10 @@ async def get_yield_dashboard(
     """
     Get yield dashboard with stats, domains, and recent transactions.
     """
-    # Get user's yield domains
+    # Get user's yield domains with partner relationship eagerly loaded
     result = await db.execute(
         select(YieldDomain)
+        .options(selectinload(YieldDomain.partner))
         .where(YieldDomain.user_id == current_user.id)
         .order_by(YieldDomain.total_revenue.desc())
     )