1. 🎵 Music Player
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• Support for uploading local audio files
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• Play / pause controls and clickable progress bar
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• Real-time playback time and total duration display
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• Slider volume adjustment
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  2. 🔑 Password Generator
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• Custom length from 4 to 64 characters
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• Toggle options for uppercase, lowercase, numbers and symbols
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• One-click strong password generation and copy to clipboard

📐 Code Optimizations

• Code refactoring, full code formatting: split long single lines and add indent hierarchy
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• Extract common window style classes to reduce duplicated CSS code
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• Add a 5-column grid tool launch area at the bottom of the main toolbox