packaging/build-deb.sh builds an installable blitztext_<ver>_arm64.deb with a
desktop entry, app icon, and launcher. Bundles a relocatable venv (all Python
deps, no pip at install) and declares system deps (python3-gi, xdotool,
libnotify-bin, recorder). Built on /usr/bin/python3 so the tray works out of
the box. Installs via the Software app or `apt install ./…deb`.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>