get_env_vars() and _generate_fontconfig() read the bundled fontconfig and fonts
through get_path(), i.e. the managed install, even when the caller supplied
their own binary. _load_properties() already honours executable_path for
properties.json; these two did not.
Before the floor could reject anything this silently mixed one build's fonts
into another build's launch. Once the floor is live it becomes fatal: every
launch raises UnsupportedVersion while the caller is holding a perfectly good
binary, because resolving the bundle drags in the managed install and that is
what gets version-checked.
Thread executable_path through both, matching _load_properties.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
