feat: Add Atbash Cipher Implementation

.claude/claude.md

@@ -0,0 +1,49 @@
+# SubCoder Cipher Matrix Project Context
+
+## Project Overview
+SubCoder Cipher Matrix - A comprehensive cryptographic visualization and educational platform featuring 50 different cipher implementations with interactive UI components.
+
+## Project Structure
+- `/src` - Source code directory
+  - `/components` - React components
+  - `/utils` - Utility functions and cipher implementations
+  - `/styles` - CSS and styling files
+  - `/types` - TypeScript type definitions
+- `/public` - Static assets
+- `/tests` - Test files
+- `/docs` - Documentation
+
+## Tech Stack
+- React with TypeScript
+- Vite for build tooling
+- Vitest for testing
+- ESLint & Prettier for code quality
+- Tailwind CSS for styling
+
+## Development Guidelines
+1. Follow TypeScript best practices
+2. Maintain comprehensive test coverage
+3. Use functional components with hooks
+4. Implement proper error handling
+5. Ensure accessibility standards
+
+## Current Focus
+- ✅ Setting up initial project structure
+- ✅ Implementing cipher algorithms (5/50 complete)
+- ✅ Building interactive UI components
+- ✅ Creating development workflow and testing tools
+- 🔄 Addressing code quality and production readiness
+
+## Key Features
+- 50 different cipher implementations (5 completed: Caesar, Vigenère, Atbash, Binary, Hex)
+- Interactive encoding/decoding interface with cyberpunk styling
+- Visual representation of cipher operations
+- Educational resources and detailed algorithm explanations
+- Comprehensive input validation and error handling
+- Development-only console logging for debugging
+- Production-ready code with proper environment detection
+
+## Notes
+- Project is in initial setup phase
+- Following professional development standards
+- Emphasis on code quality and maintainability