~anthropic/claude-sonnet-latest → A (6:4)

A completes a real refactor by removing a stale duplicate forum.rs so the module tree resolves unambiguously to forum/mod.rs, fixing a build-correctness hazard; B merely adds one probabilistic unit test with no production code changes. Both are modest, but A's fix has direct build/runtime consequence while B's is a nice-to-have test with a randomized (non-deterministic) assertion that could be flaky.