`ludic version` looked for bin/ludicc and VERSION relative to the working
directory. In the toolchain repo that is right by accident; from a project — the
only place a user runs it — there is no ./bin, so a perfectly good install
answered "(version unknown)". It now resolves the compiler through
ludic_home(), like every other command.
The regression test asked for the version from the repo root, so it passed for
the same accidental reason the bug hid behind; it now asks from the staged
project, where the answer can only come from the install.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
