📜 FlexGuard Changelog

All notable changes to this project will be documented in this file.

[Planned v0.4 / Next]

Fix error when lastBackupTime was hardcoded, now it takes the latest backup time from the manifest.(Done)
Diff-based storage for file versioning (avoid full re-duplication).
Hash per chunk file and optional manifest signing.
Transaction-safe manifest writes (atomic/temporary file then swap).
Expanded test coverage (unit + integration).
Fix System.Text.Json trimming warnings by introducing JsonSerializerContext (source generators) or selectively disabling trimming for affected code paths to ensure PublishTrimmed=true works safely.

Implemented CLI argument parsing (ProgramOptionsParser) with /?, /h, -h, --help.
Added VersionHelper and centralized semantic versioning with Directory.Build.props (Git hash trimmed when displayed).
MessageReporterConsole for consistent console/file logging with debug toggles.
Enhanced RestoreFileSelector:
- Directory and Tree View modes with persistent selections.
- Filtering with case-insensitive contains.
- Select-all and clear-all options.
- Footer status showing selected/total files and directories.
- Robust add/remove logic for directories (RemoveAllUnder / AddAllUnder).
Verified restore logic with per-file hash validation.

Significant performance boost due to Zstd compression (over 60% faster than GZip).
General stability improvements in chunk processing.

Introduced Brotli and Zstd compressors, with Zstd as recommended default.
Added BackupRegistry and manifest files with start/end timestamps to detect and resume/inspect interrupted backups.
Copy of registry + manifest into backup folder for redundancy.
Implemented PerfLogger for per-job statistics (JobName, Mode, Compression, FileCount, GroupCount, TotalTime).