SU.1128 Robot cells in the flow add-on: reach, cycle time and offline robot program export

Robot cells in the Material flow add-on (ModelCraft, /lab), Robot cell panel. The person chooses (owner 2026-11-06): a robot model (generic 6-axis, SCARA, delta, Cartesian, and a 6-axis with the UR5e's published kinematics; the joint table is editable and saved with the document) and which program formats to save, several at once, remembered per document and per user: path list (CSV and JSON, always), ROS URDF, ROS joint trajectory, Universal Robots URScript (two public sources, dated in the panel's Sources list). Reach, cycle time, I/O set and wait, pick and place.

Left out (a language needs two independent public sources for every statement it uses): ABB RAPID, KUKA KRL (both close), Fanuc, Yaskawa, Kawasaki, Mitsubishi, Staubli, Denso. Reasons in the panel. Vendor programs are minimal, labelled unverified and not run on a robot. Not built: collision checks against the layout, tool/frame statements, blending. Tests: docs/0.9-sessions/flow-robots-09.md. Real-controller check: SU.1128-HAND.