Replace Geometry

/**
 * Node that replaces geometry in a mesh while preserving materials and weights.
 * 
 * Swaps triangles from a selection with geometry from another mesh,
 * with options for weight transfer and material assignment.
 * 
 * Usage:
 * 1. Connect source mesh, replacement geometry, and selection
 * 2. Configure weight transfer method
 * 3. Click Apply to replace geometry
 */