The previous version did `(cd repo && "${cmd[@]}")` to "cd into repo
for module imports." But PYTHONPATH was already set to $PWD/repo at
the top of the script — so the cd was redundant for imports AND
broke relative paths: the trainer expects to find
data/processed/validation_v1.parquet from $HOME/cis490, not from
$HOME/cis490/repo/.
Symptom: every training job failed immediately with
FileNotFoundError: data/processed/validation_v1.parquet
Drop the cd; PYTHONPATH already does the import work.
Found while running on the A100 today; trainer relaunched manually
in-place via a stand-in bootstrap2.sh; this commit makes the next
bundle clean.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
ed7e3db035