[View Complete Diff of Changes](https://github.com/dotnet/roslyn/compare/517e95f9430d387e0e387a23fa2c8351a0863c4a...dfa1641adcc50210f252c9bb3d18577710b6e6e0?w=1) - [Add feature flag controlling Copilot prompt in Semantic Search](https://github.com/dotnet/roslyn/pull/77562) - [Correct how we pick up options for `ICopilotOptionsService`](https://github.com/dotnet/roslyn/pull/77620)