Baseline regression modelling

This page is the shell for an upcoming article. We're writing the docs batch-by-batch — the structure here is final, the prose is being drafted.

When it ships, this article will cover the engineering and methodology behind this topic in the depth a plant engineer or Hydro-Québec reviewer needs: formulas with citations, worked examples, and the specific design choices Opnor made (and why).

If your team needs this piece before it's scheduled, tell us — we'll pull it forward.