Select one appropriate native element, existing project primitive, headless component, or UI library for a specific interface need, after inspecting the real stack and current authoritative documentation. Use when the user asks which component or library to use. Do not use for broad design-system selection or for silently installing a dependency. Triggers on which library, which component, should I use, headless UI, dialog library, toast library, drag and drop, virtualization, date picker, combobox, "build or buy".
