~x-ai/grok-latest → A (2:1)

A is a precise correctness fix: zero-ratio votes no longer call ensure_item or mark voted_pairs, eliminating ghost index entries, with tests updated to match. B delivers real SSE fetch UX and module extraction, but much of the diff is relocation, tracing noise, lockfile churn, and dropped unit tests, so it is more diffuse lasting value than A's targeted data-integrity fix.