The `epsActual` That Wasn't: 15% of an LLM Backtest's Trades Were Decided on Data That Didn't Exist Yet

We were backtesting an LLM-driven earnings signal against a field called epsActual — the kind of field everyone treats as ground truth. It isn't. About 41.4% of those "actual" values were different from what the vendor had first reported. About 15.3% differed enough to flip a tradeable decision. Whe

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