Launch the verified NSIS installer directly before application shutdown, wait for Windows to confirm process creation, and keep the application open on spawn failure. Move process waiting into NSIS with a bounded graceful and post-force termination check, and cover the handoff with updater regression tests.
Add sanitized provider and account runtime diagnostics, complete the Multi-Debrid-Downloader product rename, preserve existing application data during migration, update public release verification, and publish the accompanying English documentation and regression coverage.