fix(server): normalize Claude question answers

R04 follow-up

Convert client multi-select answer arrays to the comma-separated string shape required by the pinned Claude SDK while preserving single-select strings.

Implemented by GPT-5.6 Sol via Codex.
c4167728feJulius Marminge committed on 9/21/2026, 5:31:38 AMparentbd67fbe
2 files changedLine totals unavailable