hellocalc

Playbook for adding a new HP calculator model faceplate to hellocalc — verified key data, derived keyboard geometry, family archetypes, MachineUnit/nameplate/topbar wiring, hotkeys, unit + e2e guards, and the hard-won layout traps (lcm subgrids, aspectClass overrides, cascade rules, trademark-safe branding).

Workflow for bridging Nerdamer symbolic CAS outputs into beautiful React KaTeX renders

Guidelines on implementing an RPN LIFO stack architecture utilizing React state and Math.js BigNumbers

Reference on properly scaffolding the specific UI/UX constraints on a Next.js Shadcn layout.