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docs: update project memory for calc-02 UI and command notes

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MatMoul
2026-05-16 04:10:19 +02:00
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.memory/project.md
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# State # State
- Core engine: `src/rpn-calculator.js` - Core engine: `src/rpn-calculator.js`
- Active demo: `samples/calc-02/` portrait-only HP48GX layout; display-adjacent button row stays in 4 columns and uses compact popup menus for mode/constants - Reference demo: `samples/calc-02/` (portrait-first HP48GX layout, compact mode/constants popups)
- Mode button shows the current angle mode only; selecting a mode uses a popup menu - Important UI behavior: mode button shows the current angle mode; keyboard focus stays on the hidden input on desktop; clipboard paste is supported
- Public API: `push`, `pop`, `clear`, `swap`, `remove`, `edit`, `isValidIndex`, `input`, `command`, `getOperationsByCategory`, `getConstants`, `listConstants`, `setConstant`, `removeConstant`, `hasConstant` - Public API: `push`, `pop`, `clear`, `swap`, `remove`, `edit`, `isValidIndex`, `input`, `command`, `getOperationsByCategory`, `getConstants`, `listConstants`, `setConstant`, `removeConstant`, `hasConstant`
- Config: `maxSize`, `base`, `angleMode`, `enabledCommands` - Config: `maxSize`, `base`, `angleMode`, `enabledCommands`
- Commands: arithmetic, stack, trigonometry, constants `pi` and `e`; arithmetic now includes `root` for y-th roots; constants can now be added or removed dynamically through the core API and the calc-02 constant menu reads from the engine - Commands: arithmetic, stack, trigonometry, constants `pi` and `e`; arithmetic includes `root`; constants can be added or removed dynamically through the core API
- Demo actions: keyboard focus is kept on the hidden input on desktop so typing keeps working; the keypad layout places Enter in the bottom-left, ± in the former Enter position, and Esc before Clear for safety; paste parses clipboard text as a number before pushing it to the stack; Ctrl+V is supported via the hidden input paste event; backspace is ignored when the stack is empty; operation errors are shown as an overlay bar on top of the calculator with a shorter timeout and darker red; the display button row uses a 4-column grid with a spacer cell to preserve alignment; mode and constant popups are aligned to the left edge of their trigger buttons; the portrait layout reference now lives in `samples/calc-02/visual-portrait.md`
- Exports: browser `window.RpnCalculator`, CommonJS `module.exports` - Exports: browser `window.RpnCalculator`, CommonJS `module.exports`