release_2.6.0

🔍 Duplicate ROM Detection

• Automatically identifies duplicate ROM files (same hash, different filenames)
• New Duplicate Files Window displays duplicate groups with SHA256 hashes
• Duplicate files are moved to _duplicate folder during validation
• Added "Duplicates" counter to validation statistics

📂 Enhanced Archive Support

• Automatically renames files inside archives to match DAT specifications
• RAR archives are converted to ZIP format when internal files need renaming
• Improved error handling for corrupted or damaged archives

🛡️ Strict No-Intro Validation

• Requires ALL hashes present in the DAT to match (strict No-Intro compliance)
• Warns about DAT files containing filename collisions (same filename, different hashes)

📝 Comprehensive Documentation

• Added extensive XML documentation to all public classes and methods
• Improved code readability and maintainability

🔄 Async Method Standardization

• Renamed async event handlers to follow *_ClickAsync naming convention
• Updated XAML event bindings for consistency

🧹 Code Cleanup

• Removed obsolete ExceptionHandler service
• Simplified BugReportService API payload structure
• Added global cancellation token support for application shutdown

🗂️ Archive Processing

• Fixed archive extraction error handling with specific exception types
• Improved error messages for corrupted archives
• Fixed buffer overflow in CRC32 algorithm

🔍 Validation Logic

• Fixed hash matching logic for strict No-Intro validation
• Enhanced error handling for "destination already exists" scenarios

🖥️ UI Improvements

• Added new UI styles for duplicate warning windows
• Fixed status bar update methods with async support

🔧 Service Architecture

• Moved ApplicationStatsService to centralized initialization
• Improved LoggerService exception formatting

Full Changelog: release_2.5.0...release_2.6.0