Refactor: modularize codebase into focused modules #6
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Extract syntax highlighting, font handling, and preview logic into separate modules for better code organization and maintainability. New Modules: - src/font.zig (87 lines): Font loading and texture caching - src/preview.zig (240 lines): File preview and detection utilities - src/syntax_highlight.zig (238 lines): Tree-sitter syntax highlighting Changes: - Reduced main.zig from 1823 to 1678 lines (-145 lines) - Added 50 comprehensive tests across all modules - Fixed memory leak in font path cleanup - Simplified build.zig test configuration Test Coverage: - preview.zig: 18 tests (line counting, file detection, I/O) - font.zig: 7 tests (configuration, caching, platform paths) - syntax_highlight.zig: 6 tests (color mapping, scope detection) - main.zig: 14 tests (existing core functionality) - theme.zig: 5 tests (existing theme tests) Total: 50 tests ensuring safe future refactoring Benefits: - Single Responsibility: Each module has clear, focused purpose - Easier Navigation: Find relevant code quickly by module - Better Testability: Isolated testing of components - Improved Maintainability: Changes are localized to modules - Safe Refactoring: Comprehensive test coverage prevents regressions All tests pass. No functionality changed, purely organizational.
Keep only the correct usage example and important note about full paths.
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Extract syntax highlighting, font handling, and preview logic into separate modules for better code organization and maintainability.