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50 lines
1.9 KiB
Markdown
50 lines
1.9 KiB
Markdown
# Qwen Code Instructions: Geek Calculator
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## Project Overview
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Calculator application with standard and RPN modes, keyboard-first operation, and terminal-like UI aesthetic. Built with vanilla HTML/CSS/JS with zero dependencies and <50KB total payload.
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## Key Technologies
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- HTML5, CSS3, JavaScript ES6+
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- Service Workers for offline capability
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- LocalStorage for history persistence
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- ES6 Modules for code organization
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- Custom test harness (no dependencies)
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## File Structure
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```
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index.html # Main application file
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styles.css # Dark terminal theme, responsive layout
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app.js # Main application logic with modules:
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├── calculator.js # Core calculation logic
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├── rpn-calculator.js # RPN calculator implementation
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├── ui.js # User interface interactions
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├── state.js # Application state management
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└── utils.js # Utility functions
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service-worker.js # Offline functionality
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manifest.webmanifest # PWA capabilities
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tests/ # Test directory
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```
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## Implementation Notes
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- Keep bundle size under 50KB
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- Full keyboard navigation required
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- ARIA roles and accessibility features
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- ASCII banner in <pre> tag
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- Blinking cursor effect
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- Easter eggs for fun
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- RPN stack data structure
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- Calculation history with re-run capability
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- Command palette accessible with "@"
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## Testing
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- Unit tests for core arithmetic operations
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- Unit tests for RPN stack operations
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- Integration tests for UI interactions
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- Accessibility compliance tests
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- Performance tests to ensure <100ms operations
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## Recent Changes
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- 001-build-a-single: Added HTML5, CSS3, JavaScript ES6+ (vanilla, no build step) + None (pure HTML/CSS/JS, zero dependencies as per constitution)
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- 001-build-a-single: Initial calculator implementation with standard and RPN modes
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- 001-build-a-single: Keyboard-first operation with command palette
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