Mamba 1.5.0

Mamba 1.5.0 improves downloads and automatic game setup.

• Download games one at a time while downloaded games verify, extract and install in parallel.
• Replace the stage strip with a changing status label.
• Show real 7-Zip extraction percentages and an animated installation bar when setup does not expose percentages.
• Add automatic MSI setup alongside Inno Setup and NSIS support, with corrected NSIS destination handling.
• Offer administrator retry when Windows blocks setup, preserve downloaded files, and resume finalization after successful setup.
• Use readable, sanitized game folder names without release-ID suffixes.
• Remove misleading completed-download totals from extraction, installation and setup failures.
• Automatically resolve saved artwork overload warnings after artwork requests succeed.

Validation: all 195 tests pass, including serial-download / parallel-processing scheduling, real archive extraction progress, installer command detection and setup recovery. Custom installers may require manual steps. Live game installers and UAC were not exercised in automated checks.