Interface to the SCIP Optimization Suite // Provides an R interface to SCIP (Solving Constraint Integer Programs), a framework for mixed-integer programming (MIP), mixed-integer nonlinear programming (MINLP), and constraint integer programming (2025, doi:10.48550/arXiv.2511.18580). Supports linear, quadratic, SOS, indicator, and knapsack constraints with continuous, binary, and integer variables. Includes a one- shot solver interface and a model-building API for incremental problem construction.