ab5424/agility: v2026.3.18

What's Changed Replace mypy and pyright with ty for static type checking by @Copilot in https://github.com/ab5424/agility/pull/164 Fix markdownlint MD040 error and stale type-checker references in copilot-instructions.md by @Copilot in https://github.com/ab5424/agility/pull/166 Update Python version to 3.14 in CI workflows and pyproject.toml by @ab5424 in https://github.com/ab5424/agility/pull/167 Enforce TODO linting rules (TD002/TD003/TD005) and fix all violations by @Copilot in https://github.com/ab5424/agility/pull/169 Implement selection model for pymatgen backend + add first pymatgen tests by @Copilot in https://github.com/ab5424/agility/pull/187 Fix LAMMPS CI failures and clean up pyproject.toml by @Copilot in https://github.com/ab5424/agility/pull/190 Implement ASE backend for GBStructure by @Copilot in https://github.com/ab5424/agility/pull/192 Fix save_structure pymatgen backend regression and lammps silent no-op by @Copilot in https://github.com/ab5424/agility/pull/196 Implement structure relaxation for pymatgen and ase backends by @Copilot in https://github.com/ab5424/agility/pull/195 Implement LAMMPS backend for get_type by @Copilot in https://github.com/ab5424/agility/pull/197 Separate unit and integration tests into dedicated subdirectories by @Copilot in https://github.com/ab5424/agility/pull/199 Store grain orientation quaternions after grain segmentation by @Copilot in https://github.com/ab5424/agility/pull/203 Add atomsk integration for polycrystal structure generation and CI coverage by @Copilot in https://github.com/ab5424/agility/pull/204 Add plot_mdf: Misorientation/Disorientation Distribution Function visualization by @Copilot in https://github.com/ab5424/agility/pull/202 New Contributors @Copilot made their first contribution in https://github.com/ab5424/agility/pull/164 Full Changelog: https://github.com/ab5424/agility/compare/v0.1.0...v2026.3.18