- interface -> router; symbol_utils -> symbols, which also takes safe_ticker_component
- utils is split: get_current_date to date_window, the HTTP helpers to net
- dataflows imports are absolute; the NoMarketDataError re-export from symbols is gone
- coverage and withholding notices named where a vendor's coverage starts or today's date
- the instrument context named today's date in every analyst prompt
- both fundamentals vendors accepted curr_date and ignored it, serving a
present-day company profile into a run dated in the past: yfinance via
Ticker.info, Alpha Vantage via OVERVIEW
- that profile has no historical vintage, not even name/sector/industry (which
move when a company renames or is reclassified), so a past curr_date now
withholds it and says why; live runs are unchanged
- the rule lives once in date_window next to the existing look-ahead helpers,
so switching data_vendors between the two cannot reintroduce the leak, and
the guard runs before the request rather than discarding a paid-for response
- point-in-time fundamentals for a past date already come from the balance
sheet, income statement and cash flow tools, which filter on curr_date #1300
Yijia-Xiao