The original function had a broken pattern: 'raise _classify_gemini_error(exc)
from exc' which raises an ErrorInfo (not an Exception) — a runtime bug.
Per TIER1_REVIEW 2026-06-20 directive: per-site decision. The body raised a
structured error carrier (ErrorInfo), but the pattern was incorrect (ErrorInfo
is not an Exception). Cleanest fix: full Result[T] migration.
New helper:
- _list_gemini_models_result(api_key: str) -> Result[list[str]]
Returns Result(data=sorted_models) on success, Result(data=[], errors=[ErrorInfo])
on SDK/network failure.
Legacy wrapper:
- _list_gemini_models(api_key: str) -> list[str]
Returns result.data (preserves original signature; callers don't see errors).
Audit: ai_client BC 9 -> 8. Site L1594 (now shifted to L1609 due to helper insertion)
no longer in INTERNAL_BROAD_CATCH.