Use this skill when writing or editing .ti59 / .ti58 / .ti58c state files, including KEYSTROKES sequences, PROGRAM listings, and screenshot-automation scenario files. Covers the file format, the matrix-code vs. keycode distinction, and the 2nd-function lookup table.
Use this skill when writing or debugging XCUITest UI tests for Calc-U-59 (Calc-U-59UITests/). Covers test helpers, file picker navigation, accessibility identifiers, orientation setup, and how to verify state after a load. Trigger on any task that touches Calc-U-59UITests/*.swift or *.xctestplan.
Use this skill when working on the C++ emulation core of Calc-U-59 (files in Core/). Covers the TMC0501 CPU emulator, BCD register model, SCOM memory, machine variants (TI-59/58/58C), ROM/RAM, instruction set changes, mnemonic workflow, and trace infrastructure. Trigger on any task that touches Core/*.cpp, Core/*.hpp, tools/mnemonics.tsv, ROM disassembly, trace debugging, or machine variant behaviour.
Use this skill when working on the Calc-U-59 documentation or help website (docs/, reference/, root markdown files). Covers the GitHub Pages static site (HTML + client-side React), the design system, and the reference architecture docs. Trigger on any task that touches docs/*.html, docs/*.jsx, docs/*.css, reference/*.md, README.md, CHANGELOG.md, TODO.md, or PRIVACY.md.
Use this skill when working on the Swift/SwiftUI code of Calc-U-59 (App/, App/Views/, Bridge/). Covers EmulatorViewModel, the ObjC++ bridge, display, keyboard, debug panels, printer, card reader, settings, and state file I/O. Trigger on any task that touches App/*.swift, App/Views/*.swift, Bridge/, or the Xcode project.