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## 0.40.0

**`(feat):`** Add `RequestExecutor` trait and `HttpClient::with_executor()` constructor
to enable CLI execution-sharing. When an external executor is injected,
the SDK delegates HTTP execution entirely — auth, headers, and retries
are handled by the caller's transport stack.

## 0.39.0

**`(internal):`** Parameterize core module path in model generator to support
standalone types crate usage.