Add Responses web-service sample + integration tests for C# SDK#681

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agents/implement-responses-api-csharp-sdk

Commits on Apr 28, 2026

Add OpenAI Responses API client to C# SDK

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Commits on Apr 29, 2026

Switch C# Responses client to official OpenAI package

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Commits on May 1, 2026

Replace SDK Responses API surface with sample + integration tests

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Commits on May 3, 2026

Align Responses sample/tests with JS PR #671 patterns; all tests pass locally

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