看股功能更新

backend/app/schemas.py

@@ -18,6 +18,8 @@ class CandleOut(BaseModel):
     low: float
     close: float
     volume: float
+    amount: float | None = None    # 成交额（元）；无数据为 null
+    turnover: float | None = None  # 换手率 %；无数据为 null
 
     model_config = {"from_attributes": True}
 
@@ -264,6 +266,7 @@ class PreviewResponse(BaseModel):
     candles: list[CandleOut]
     indicators: dict[str, dict[str, list[float | None]]] = Field(default_factory=dict)
     # indicators 形如 {"ma": {"ma5": [...], ...}, "macd": {"dif": ...}, "kdj": {...}, "rsi": {...}, "boll": {...}}
+    has_more: bool = False             # 返回窗口之前是否还有更早历史（前端向左滚动翻页用）
 
 
 # ---------- Auth ----------