feat: include stock names in snapshot, transaction, and backtest transaction API responses

backend/app/api/backtest.py

@@ -17,6 +17,7 @@ from app.schemas.backtest import (
     EquityCurvePoint, RebalanceHoldings, HoldingItem, TransactionItem,
 )
 from app.services.backtest import submit_backtest
+from app.services.rebalance import RebalanceService
 
 router = APIRouter(prefix="/api/backtest", tags=["backtest"])
 
@@ -228,11 +229,17 @@ async def get_transactions(
         .all()
     )
 
+    # Resolve stock names
+    tickers = list({t.ticker for t in transactions})
+    name_service = RebalanceService(db)
+    names = name_service.get_stock_names(tickers)
+
     return [
         TransactionItem(
             id=t.id,
             date=t.date,
             ticker=t.ticker,
+            name=names.get(t.ticker),
             action=t.action,
             shares=t.shares,
             price=t.price,

backend/app/api/portfolio.py

@@ -231,7 +231,25 @@ async def get_transactions(
         .limit(limit)
         .all()
     )
-    return transactions
+
+    # Resolve stock names
+    tickers = list({tx.ticker for tx in transactions})
+    service = RebalanceService(db)
+    names = service.get_stock_names(tickers)
+
+    return [
+        TransactionResponse(
+            id=tx.id,
+            ticker=tx.ticker,
+            name=names.get(tx.ticker),
+            tx_type=tx.tx_type.value,
+            quantity=tx.quantity,
+            price=tx.price,
+            executed_at=tx.executed_at,
+            memo=tx.memo,
+        )
+        for tx in transactions
+    ]
 
 
 @router.post("/{portfolio_id}/transactions", response_model=TransactionResponse, status_code=status.HTTP_201_CREATED)

backend/app/api/snapshot.py

@@ -16,6 +16,7 @@ from app.schemas.portfolio import (
     ReturnsResponse, ReturnDataPoint,
 )
 from app.services.price_service import PriceService
+from app.services.rebalance import RebalanceService
 
 router = APIRouter(prefix="/api/portfolios", tags=["snapshots"])
 
@@ -110,6 +111,10 @@ async def create_snapshot(
     db.commit()
     db.refresh(snapshot)
 
+    # Get stock names
+    name_service = RebalanceService(db)
+    names = name_service.get_stock_names(tickers)
+
     return SnapshotResponse(
         id=snapshot.id,
         portfolio_id=snapshot.portfolio_id,
@@ -118,6 +123,7 @@ async def create_snapshot(
         holdings=[
             SnapshotHoldingResponse(
                 ticker=h.ticker,
+                name=names.get(h.ticker),
                 quantity=h.quantity,
                 price=h.price,
                 value=h.value,
@@ -150,6 +156,11 @@ async def get_snapshot(
     if not snapshot:
         raise HTTPException(status_code=404, detail="Snapshot not found")
 
+    # Get stock names
+    tickers = [h.ticker for h in snapshot.holdings]
+    name_service = RebalanceService(db)
+    names = name_service.get_stock_names(tickers)
+
     return SnapshotResponse(
         id=snapshot.id,
         portfolio_id=snapshot.portfolio_id,
@@ -158,6 +169,7 @@ async def get_snapshot(
         holdings=[
             SnapshotHoldingResponse(
                 ticker=h.ticker,
+                name=names.get(h.ticker),
                 quantity=h.quantity,
                 price=h.price,
                 value=h.value,