openai/gpt-5.2-chat → B (3:2)

Side B fixes concrete crashes in the OAuth test infrastructure: it corrects query parsing (`str/split pair #"=" 2`), reads POST bodies from `.getRequestBody`, guards `parse-token-user` against nil, ensures redirects send a 0-length body instead of -1, and wraps the HttpHandler in a try/catch to prevent server crashes—restoring broken Playwright login flows. Side A improves URL display paths and strengthens a vote-pool test to cover all 45 pairs with a ranking assertion, but B addresses fundamental test auth failures that blocked E2E flows.