Applied TDD8 refactoring improvements to draft generator module:
- Added comprehensive module docstring with usage examples
- Moved import statements to module level for better organization
- Enhanced filename sanitization with dedicated method
- Decomposed content replacement logic into focused methods
- Added role-specific replacement strategies
- Improved code maintainability and readability
These changes improve code quality while maintaining all existing
functionality and test compatibility.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
tegwick
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