marek-ac/vanadis_solver-directional_residual: Vanadis Solver – Directional Residual Stabilization (Release 2026.08)

New Features and Improvements:

• CUDA Optimization for GTX 1060 — improved kernel launch configuration and performance tuning for Pascal architecture.

• Coloring Support — added graph coloring to enable conflict‑free parallel processing.

• Linux CUDA Version — implemented GPU‑accelerated linear system solving on Linux.

• OpenMP Matrix Assembly — parallel CPU assembly of system matrices using OpenMP.

• Buffered Output Writing — enhanced stability and throughput of result file generation.

• Legacy Pasquill Stability Test — restored the classic Pasquill atmospheric stability benchmark for regression comparison.