The VARIANT variable was set inside the REMOTE_SCRIPT heredoc for
naming artifacts during the cargo tauri build, but never declared
in the local half of the script where it's used to rename downloaded
files. Under `set -u` strict mode this aborted the local downloads
with "unbound variable: VARIANT" after a successful remote build.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>