The alias only existed where it was typed by hand; a fresh VM with
dots cloned had no cfg command. The module now always ensures:
- ~/.bash_aliases holds the cfg alias (created if absent)
- ~/.bashrc sources ~/.bash_aliases (appended if absent)
Runs before the already-installed skip so existing machines get it
too. Idempotent both ways (harness-proven: single alias line, single
source line after two runs; verified working in an interactive shell:
'type cfg' resolves and 'cfg status' runs).
~/.bash_aliases is the right file to TRACK in fedora-dots next: it
will then sync further aliases across machines.