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feat(parser): Implement hosts file parser with intelligent formatting
- Added `internal/core/parser.go` for parsing hosts files, including: - Support for standard entries (IPv4, IPv6, multiple aliases, inline comments) - Handling of comments and disabled entries - Error recovery for malformed lines with warnings - Intelligent formatting with adaptive spacing and column alignment - Backup and atomic write operations for file safety test(parser): Add comprehensive tests for hosts file parsing - Created `tests/parser_test.go` with 54 test cases covering: - Standard entries and comments - Malformed lines and whitespace variations - Round-trip parsing to ensure format preservation - Backup functionality for hosts files docs(progress): Update project progress and next steps - Mark Phase 1 as complete and outline tasks for Phase 2 (TUI implementation) - Highlight completed features and testing coverage
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@ -60,3 +60,12 @@ The `/etc/hosts` file is a critical system file that maps hostnames to IP addres
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- Reduces hosts file corruption incidents
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- Speeds up common host management tasks
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- Provides confidence in making changes
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## Phase 1 Achievements ✅
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- **Safety foundation**: Backup system and atomic writes prevent any data loss
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- **Format preservation**: Intelligent parser maintains user formatting preferences
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- **Comprehensive validation**: IP and hostname validation with clear error messages
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- **Error resilience**: Warning system handles malformed entries gracefully
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- **Production ready**: 54 comprehensive tests covering all edge cases and scenarios
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The core value proposition of safe, reliable hosts file management has been fully implemented and validated.
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