PyVizAST Prerelease 0.7.0-rc2

Virtual Cursor System Rewrite

Complete Refactor:

• Unified state management: Single cursorStateRef object instead of multiple states
• Smooth position interpolation with CURSOR_SMOOTH and SNAP_SMOOTH factors
• CSS variables for theme support (--cursor-bg, --cursor-border, etc.)
• Cleaner class naming: cursor-dot, cursor-ring, cursor-progress, cursor-snap

Snap Animation:

• Smooth snap indicator following with separate smooth factor (0.2)
• First snap initializes position immediately to avoid delay
• Snap indicator now correctly follows node center position

Performance Optimizations:

• CSS transform instead of left/top for GPU acceleration
• Use node.renderedPosition() for accurate screen coordinates
• opacity transitions instead of display for smoother animations
• CSS will-change for optimized rendering

Bug Fixes:

• Fixed CSS animation conflicting with JS position (use margin centering)
• Fixed snap position using renderedPosition() instead of manual calculation
• Fixed snap selecting wrong node (distance squared comparison bug)
• Added validation for renderedPosition() return values

Files Modified:

• frontend/src/components/ASTVisualizer.js - Complete cursor system rewrite
• frontend/src/components/components.css - CSS variables, simplified animations
• frontend/src/App.js - Removed unused GestureType import