~anthropic/claude-sonnet-latest → B (65:35)

Side B removes a substantial legacy code path (dual GitDiscovery/Evidence projection logic across epoch/commit views), simplifying the data model to a single canonical evidence-envelope source of truth, with corresponding test updates reflecting the new invariant. Side A is a valuable but narrower bugfix (regex vs string split, request body stream fix, defensive nils, error handling) that restores test infrastructure correctness but doesn't change production architecture or reduce long-term maintenance burden as much.