v0.6.0

Added

• node bounds — get node position, size, center point, edges
• path commands — vector path manipulation:
  • path get <id> — read SVG path data
  • path set <id> "M..." — replace path data
  • path move <id> --dx --dy — translate all points
  • path scale <id> --factor — scale from center
  • path flip <id> --axis x|y — mirror horizontally/vertically
• Uses svgpath library for path transformations
• Path command tests