Support explicit proxy disabling and ambient proxy fallback without leaking env state into config.
Improve first-run detection, endpoint-specific error messaging, diff exclusions, and runtime helper boundaries covered by unit tests.
Remove Record<string, unknown> type annotation to let TypeScript infer
the params object type, preserving type checking on all properties.
Cast to ChatCompletionCreateParamsNonStreaming at the create() call site
to accommodate the SDK's missing max_completion_tokens type. Add unit
test for reasoning model detection regex.
Signed-off-by: majiayu000 <1835304752@qq.com>
