* .NET: Fix ReasoningSummary passthrough in GitHub Copilot resume config
CopyResumeSessionConfig hand-copies a subset of SessionConfigBase into a new ResumeSessionConfig instead of using Clone(). It was missing ReasoningSummary, so callers that set SessionConfig.ReasoningSummary got readable extended-thinking summaries on the first turn but had it silently dropped on every resumed turn. ContextTier (a sibling model/context knob passed alongside ReasoningEffort/ReasoningSummary) was missing too. Both are now copied, mirroring ReasoningEffort.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
* .NET: Assert ReasoningSummary/ContextTier defaults in null-source resume test
Addresses PR review: the null-source CopyResumeSessionConfig test now also asserts ReasoningSummary and ContextTier default to null, locking the intended default behavior of the newly copied properties.
Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
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Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Co-authored-by: Roger Barreto <19890735+rogerbarreto@users.noreply.github.com>
Chandramouleswaran
eccf47154f