The wall-framing takeoff engine has long known two things about a wall that the page could not express: a wall can be an interior partition with no sheathing (drywall goes on both faces), and a wall can have free ends, where it stops without meeting another wall (each needs corner bead on every drywalled face).
Both lived only in the plan JSON. A person using the page typed their walls into the table, and the page quietly rebuilt each wall without those keys, so partitions were counted as exterior walls with drywall on one face only.
Today's change adds two columns to the wall table, "Partition (no sheathing)" and "Free ends", and keeps both when a plan is saved and reopened. A headless browser test sets a free end on wall 1 and checks the corner bead footage rises.
The numbers are still hand counts, not a real builder's takeoff. Corner bead sticks and waste follow the engine's stated rates. A real plan from a framer is the next test it needs.
Tool: the wall framing takeoff in ventures/wall-framing-takeoff/.