First CI run on PR #5312 surfaced two issues:
1. static job: drift step found 463 files of drift (7359 / 9634 line
delta) on unslothai/notebooks @ main. That is a real upstream
backlog the notebooks-side maintainers need to address; this
workflow's role is to surface the count, not auto-fix. Mark
drift + convert as continue-on-error so the count surfaces in
the PR check UI without blocking. Drop continue-on-error once
the count returns to zero.
2. api-introspect job: pip install step did not include nbformat,
so the convert subcommand crashed with ModuleNotFoundError on
every notebook. Add nbformat + nbconvert to the install line
(matching the static job's deps) and mark its convert step
continue-on-error for the same upstream-tolerance reason.
Pre-existing failures on PR #5312 (Chat UI Tests Playwright timeout,
CodeQL job) are unrelated and out of scope for this commit.
a65b7300d3