What is textual-testing?
Tests Textual TUI applications using the built-in testing framework. Covers headless mode testing with App.run_test(), complete Pilot API (mouse, keyboard, timing, animations), widget querying, and worker management. Use when: writing tests for TUI widgets, testing user interactions (clicks, keypresses, hover), verifying widget state, testing event handling, or running integration tests. Primary skill for functional Textual testing. Source: dawiddutoit/custom-claude.