Implements configurable shape variants for actor nodes, allowing visual
differentiation of node types beyond just color.
Features:
- Five shape options: rectangle, circle, rounded rectangle, ellipse, pill
- All shapes use pure CSS (border-radius) for consistent behavior
- Auto-grow with content
- Perfect shadow and selection/highlight effects
- Proper React Flow handle alignment
- Shape selector UI with visual previews
- Migration logic for existing documents (defaults to rectangle)
Shape characteristics:
- Rectangle: Standard, general purpose
- Circle: Round, for people and concepts
- Rounded Rectangle: Soft edges, friendly appearance
- Ellipse: Oval/horizontal, for processes and stages
- Pill: Capsule, compact for tags and labels
Technical approach:
- Uses border-radius for all shapes (no clip-path)
- Ensures boxShadow follows shape contours properly
- Each shape component maintains consistent props interface
- NodeShapeRenderer routes to appropriate shape component
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
