~anthropic/claude-sonnet-latest → B (60:40)

Side B substantially deduplicates a large amount of copy-pasted HTTP/OAuth/test-harness boilerplate across four test files into shared helpers in test.common and test.oauth, reducing maintenance burden without changing behavior—clear lasting value with low risk. Side A refactors entity-panel selectors to be per-item and reuses entity_section in vote comparisons, which is a reasonable improvement but also introduces a stray syntax artifact (`| FetchJobResult::SkippedDuplicate`) and removes some vote-compare-specific styling/markup, making it a slightly riskier and more speculative change.