🔴 CI alert: a key job failed or was skipped

[github-actions]

🔴 CI alert on refs/heads/main (commit 1177d60)

Problem jobs:

• test_ipynb_linux → failure
• update_nmisp_py → skipped

Run: https://github.com/kangwonlee/nmisp/actions/runs/30514462522

test_ipynb_colab is not watched (chronically red — 030 dead-kernel). This issue auto-closes when the watched jobs pass.