Updated the EXE_PATH variable in both installService.bat and uninstallService.bat to use 'welsonjs' instead of 'WelsonJS' for consistency and to avoid potential path issues.
Service executable paths in installService.bat and uninstallService.bat now use %APPDATA% for improved portability. The setup.iss installer script updates registry keys to use the application name macro, adjusts file and icon paths to user appdata, and changes PowerShell execution flags. afterInstall.ps1 now downloads and extracts WelsonJS binary artifacts from a remote URL.
