fix(notebook/kaggle): qwen in pass*_quality dropdowns + translate cmd argv split (#315, #318)

#318: pass1_quality and pass2_quality #@PARAM dropdowns were missing
"qwen" even though qwen is a valid --mode value in whisperjav.main
argparse. Adds it to both passes for parity. Reported by jasial2.

#315: cell-3's translate cmd was passing the multi-token Kaggle command
(f"{sys.executable} -m whisperjav.translate.cli") as a single argv
token, producing "[Errno 2] No such file or directory:
'/usr/bin/python3 -m whisperjav.translate.cli'". Mirrors the split
pattern already in cell-2's build_cmd(): checks
endswith('whisperjav-translate') for the Colab single-executable case,
else .split() for the Kaggle module form. Reported by jasial2.

Both fixes ship off-release on main; the Kaggle notebook installs
WhisperJAV from git+...@main, so users get the fix immediately on
next notebook run. No version bump needed.

Notebook source format note: NotebookEdit collapsed the affected cells'
source from list-of-strings to single-string format. nbformat accepts
both forms and Jupyter renders identically — no functional change, but
it produces a noisy diff.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: meizhong986