Frontend
- Pure HTML5, CSS3, JavaScript (ES6+)
- Native ES6 Modules, no build step
- 15 themes via CSS Variables
Data
SQL.js(SQLite in WebAssembly)- Runs entirely in the browser
- Python scripts for DB management
Architecture
- Three layers: logic, domain, UI
- Pure-function core libraries
- Strict logic/DOM separation
Testing
- 313+ tests via Vitest
- Test-driven development
- JSDoc on all exports
Open source on GitHub. Made with Claude Code, verified by humans.
