Covers essentials modeled after gostations:
- Project description and galculator GTK inspiration
- MVP features (decimal math, BASE cycling via Tab, CERR policy, MOD, display layout, tactile keypad)
- Requirements
- Install via one-liner release scripts (Linux/macOS + PowerShell)
- Usage: display row, key bindings (Tab:BASE, m:MOD, Backspace:C, Del:AC, etc.)
- Building from source (make build/install/test)
- Development notes (links to spec.md, docs/ARCHITECTURE.md, docs/UI_DESIGN.md, workflows, engine/UI separation)
- Ties to personal apps/ ecosystem and REXX launcher
All naming is now consistently 'gralculator' (folder, binary, repo).
