tegwick e46e97801d feat: implement --emoji flag and MARKITECT_EMOJI environment variable - Issue #37 ...

Add comprehensive emoji preference support to complement existing --ascii flag:

🎯 Core Features:
• Add --emoji flag to visualization tools (visualize_schema.py, schema_summary.py)
• Implement MARKITECT_EMOJI environment variable support
• Maintain backward compatibility with existing --ascii flag behavior
• Establish proper priority: CLI flags > environment variables > defaults

🏗️ Architecture:
• Create shared emoji_utils.py module for centralized logic
• Implement determine_output_mode() for standardized preference resolution
• Add add_emoji_arguments() for consistent argument parser setup
• Follow DRY principle - eliminate duplicate code between tools

🧪 Testing:
• 18 comprehensive tests covering all functionality
• Basic flag tests: existence, mutual exclusivity, defaults, precedence
• Environment variable tests: recognition, case handling, CLI overrides
• Configuration integration tests: system compatibility, error handling
• All 1337 project tests pass (no regressions)

💡 User Experience:
• Consistent behavior across all MarkiTect visualization tools
• Multiple preference setting methods (CLI flags, environment variables)
• Robust error handling with sensible defaults (emoji by default)
• Clear help documentation and discoverable usage patterns

🔧 Implementation Details:
• Mutually exclusive argument groups prevent conflicting flags
• Case-insensitive environment variable processing
• Valid false values: 'false', 'f', '0' - all others default to emoji
• Comprehensive documentation with usage examples

The implementation follows TDD principles and MarkiTect architectural
patterns, ensuring high quality and maintainability while delivering
enhanced usability features.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025-10-06 17:46:54 +02:00

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