- Split 3470-line iframe.html into manageable components
- Created src/ directory with styles.css, template.html, calculator.js
- Updated build.js to assemble from modular source files
- Maintains identical functionality with improved maintainability
- Single source of truth: edit in src/, run build.js to generate both outputs
Fixed the build script to properly handle data-theme and data-scale attributes:
- Remove duplicate theme/scale assignments that were overriding options
- Apply theme classes to correct element (#dogCalculator)
- Support all three themes: light, dark, system
- Remove duplicate applyTheme/applyScale calls in init method
