Major Features

Create New NBT Files

• Added "Create NBT File" button in toolbar to create empty NBT files
• New files automatically select the root tag for immediate tag additions

Add Tags Functionality

• Add new tags to Compound tags (key-value pairs)
• Add items to List tags with automatic type validation
• Add elements to Array tags (ByteArray, IntArray, LongArray)
• Input validation based on tag type (numbers only for integers, decimals for floats)

Enhanced User Experience

• Visual icons for each tag type in the tree view (using sprite sheet)
• Improved input validation allowing decimal point entry in Float/Double fields
• Automatic tag unselection after deletion
• Confirmation dialogs with proper button ordering (Yes on right, No on left)
• Removed unnecessary success popup messages

Code Quality Improvements

Major Refactoring

• Split monolithic main.py (604 lines) into modular components:
  • ui/tree_widget.py - NBT tree view component
  • ui/property_editor.py - Property editing panel
  • ui/main_window.py - Main application window
  • main.py - Minimal entry point (20 lines)

New Utility Modules

• utils/tag_helpers.py - Centralized tag type checking utilities
• utils/tag_value_editor.py - Value parsing and editing logic
• utils/file_operations.py - File operation helpers with error handling

Improved Code Organization

• Clear separation between UI components, business logic, and utilities
• Better maintainability and readability
• Removed duplicate imports
• Added type hints compatible with Python 3.9+

Technical Details

• File Structure: Organized into ui/, utils/, and nbt/ directories
• Dependencies: No changes to external dependencies (still just PyQt5)
• Compatibility: Python 3.9+ required
• Platform Support: Windows, macOS, and Linux

Bug Fixes

• Fixed input validation for Float/Double fields to allow typing decimal points
• Fixed tag unselection after deletion
• Fixed confirmation dialog button ordering

Full Changelog: v1.0...v1.1