Squash merge of 3 commits: 1. useLiveTransforms store for 2D/3D decoupling + floorplan overhaul + Sentry crash fixes 2. Comprehensive 59-file sync bringing editor to full monorepo parity (selection highlights, delete tool, furnish/zone modes, keyboard shortcuts, all panels) 3. Missing files fix (materials.ts, merged-outline-node.ts, type fix) 75 files changed, ~6K additions.