Makefile: propagate install_parakeet_model.py failures from install
The post-install hook for parakeet was running install_parakeet_model.py
without || exit 1, which silently swallowed failures.
Default-flip lode mwyt5l3e hardened sibling steps in the parakeet-prep
block, but this post-install step was missed.
Wrap it with
|| { echo "parakeet install: install_parakeet_model.py failed" >&2; exit 1; }
to match the existing recipe style.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>