What's New in v3.0.0

Major Changes

CHD verification and extraction now use the CHDSharp library instead of spawning external chdman.exe processes. This means:

Faster verification — in-process checksum validation (SHA1/MD5) without process overhead
Faster extraction — direct sector reads via CHDSharp instead of subprocess I/O
Fewer dependencies — chdman.exe is now only needed for conversion (creating new CHD files)
Better error messages — precise CHD error codes instead of parsing console output

The entire UI has been migrated to WPF-UI v4.3.0:

Mica backdrop — native Windows 11 acrylic effect on the main window and About dialog
Rounded corners — modern window chrome on Windows 11
Consistent button styling — Primary, Success, Danger, Info appearances replace hand-rolled templates
Symbol icons — vector icons replace bitmap PNG images for toolbar buttons
Dark theme — enforced at startup for a consistent look
Title bar integration — custom content drawn in the window title bar area

Logs button — Opens the AppData logs folder directly from the title bar
SSL certificate tolerance — Name-mismatch errors (common with proxies/firewalls) are logged as warnings instead of blocking connections
7za fallback for ZIP — If the built-in .NET ZIP extractor fails (e.g. Deflate64, LZMA, PPMd compression), the app falls back to 7za.exe
Per-file timeout for PBP extraction — PSXPackager now respects the same timeout limit as CHD conversion
PSXPackager error capture — stdout/stderr are captured and shown on extraction failure
Access keys — All buttons now have keyboard shortcuts (Alt+underlined letter)

Thread safety — Stat counters now use volatile and Interlocked.Increment; SafeFireAndForget wrapper logs task failures
Bug report sink — Fires on Warning level (was Error-only); uses interlocked flag to prevent API flood
Path sanitization — Two additional mojibake ellipsis variants detected (Shift-JIS, Windows-1251); names that become all-underscores fall back to a GUID
Archive error messages — Unsupported compression methods (Deflate64, LZMA, PPMd) now produce clear guidance
GDI resource cleanup — ScreenshotService properly releases GDI handles in a finally block
File operation retries — TryDeleteFileAsync and TryDeleteDirectoryAsync now retry up to 3 times
CRC error detection — IsCrcErrorException checks both HRESULT and message content
Cancellation awareness — Operation summary uses "canceled" vs "completed" based on actual outcome
Release notes rendering — \r\n sequences in GitHub release bodies are now properly converted to newlines
Log directory — Moved from app folder to %LocalAppData%\BatchConvertToCHD\logs
Mutex ownership — Handles AbandonedMutexException from crashed previous instances
GitHub rate limit detection — Also handles HTTP 429 (Too Many Requests) in addition to 403

HttpClient injection — UpdateService, StatsService, and BugReportService accept HttpClient via constructor for testability
PbpExtractionResult — Sealed class with init-only property
BugReportService.SendBugReportAsync — Made virtual for test mocking
ArchiveService — ExtractZipWith7ZaFallbackAsync extracted as a dedicated method
MainWindow.xaml.cs — Monolithic ProcessSingleFileForConversionAsync refactored into specialized helpers (ProcessCsoFileForConversionAsync, ProcessArchiveFileForConversionAsync, ProcessPbpFileForConversionAsync, ValidateDependentFilesAsync, TryDirectConversionAsync, TryRetryConversionViaTempCopyAsync, HandleConversionResultAsync)
XML documentation added across service classes and models

SharpCompress 0.50.0, Serilog 4.4.0, xUnit 2.9.3 unchanged.

Full Changelog: release_2.11.0...release_3.0.0