Keep the calculator stack unlimited in the demo and only constrain the rendered stack view. Also restore the edit cursor position when pulling a value into the input from the stack.
Refactor the calc-02 demo to use a single popup menu component for angle mode and constants, align the menus to their trigger buttons, and update the README/project notes to reflect the portrait-first demo layout and constant API.
Remove the responsive two-column desktop arrangement and make the calculator stack vertically with a 4-column display button row that preserves alignment. Also align the display buttons with the shared base button styling.
Add clipboard paste handling for the hidden input and the paste button so pasted text is parsed as a numeric value before being pushed. Also add the eˣ function key in the sample calculator and keep the hidden input selected on focus for Ctrl+V support.
matmoul