- Square frame support — generate string art on square frames (up to 400 pins) - Real-time string art generation preview. - Redesigned single-screen onboarding. - Voice guidance with voice selector, contextual step hints, and tie-off instructions. - Enhanced PDF export — compact 5-column sequence layout, tiled 1:1 scale pin diagram with crop marks, assembly guide, and B&W print optimization - Performance improvements. - Bug fixes for purchases and pin spacing.