Planner
Define the DOE structure
Screening logic: 2^k full or 2^(k-p) fractional with replication for power
Use one factor per line in the format: `Factor, Low, High`. This planner is optimized for 2-level screening designs.
Planning notes
Full factorial designs preserve interaction resolution best, but fractional designs become more practical as factor count grows.
Replication improves power and helps separate real factor effects from background noise.
Randomization helps protect the study against time-order bias, warm-up drift, and shift effects.