Bug: get_YFin_data_online omits the requested end_date row

[RSXLX]

Summary

The direct yfinance stock-data tool passes the user-requested end_date directly to Ticker.history(), whose end date is exclusive. The report header says data is from start to end, but the final date is not included.

Evidence

• tradingagents/dataflows/y_finance.py:24 calls ticker.history(start=start_date, end=end_date).
• tradingagents/dataflows/y_finance.py:50 reports from {start_date} to {end_date}.

Reproduction

Request stock data for a range where the end date is a trading day.

Expected

The end date row should be included or the header should state the exclusive range.

Suggested fix

Add one day to end_date before passing it to yfinance for daily history.

[Yijia-Xiao]

Fixed in dab0768. yfinance treats the end date as exclusive, so we now request one day past it — the requested end_date (and the current day) is included, while look-ahead is still prevented by the curr_date filter. Verified with real data (the end_date row is now returned) and regression tests. Thanks @RSXLX.