Yijia-Xiao 8db41f6bca fix(memory): gate past-context lessons to point-in-time in backtests ...

- get_past_context returned every resolved lesson regardless of the run date, so
  a historical run could learn from an outcome that had not happened yet
- record each resolved entry's resolution date (the last price bar used) and
  filter get_past_context(as_of=trade_date) on it for a historical run; a
  current-date run passes None so live behavior and pre-migration entries (no
  stored resolution date, conservatively excluded from backtests) are unaffected #1251

2026-08-30 07:03:06 +00:00

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