https://zohebalvi.com/projects/autonomous-mower.html Milestones from the open-source 615 lb autonomous mower build https://github.com/zohebzma2-cmyk/autonomous-mower/releases/tag/v0.2-design 2026-07-12T12:00:00Z2026-07-12-v0.2-design - Spec-true machine model: all four envelope numbers match the published ZT X 52 https://github.com/zohebzma2-cmyk/autonomous-mower/releases/tag/prototype-v1 2026-06-26T12:00:00Z2026-06-26-prototype-v1 - One-day design sprint: 23→24 printable parts, verified order sheet (~$1.6k),