feat: 手动添加的交易记录，不算入持仓金额

app/components/AddHistoryModal.jsx

@@ -197,6 +197,10 @@ export default function AddHistoryModal({ fund, onClose, onConfirm }) {
           />
         </div>
 
+        <div className="muted" style={{ fontSize: '11px', lineHeight: 1.5, marginBottom: 16, paddingTop: 12, borderTop: '1px solid rgba(255,255,255,0.08)' }}>
+          *此处补录的买入/卖出仅作记录展示，不会改变当前持仓金额与份额；实际持仓请在持仓设置中维护。
+        </div>
+
         <button
           className="button primary full-width"
           onClick={handleSubmit}