# Cross-day lesson — Horizon Supply, 2026-04-23

_Generated by `gpt-oss:20b` in 4.3s. Based on 1 events + 1 mid-day checkpoints._

**  
When executing a `baseline_fill`, always guard against missing `f.reason` before calling `slice`. Add a null check (e.g., `if (f.reason) { … }`) or pre‑fetch the field during data load. Log a warning and skip the slice if `f.reason` is undefined to avoid runtime JS errors and keep the pool count accurate.