AI Assistants in the IDE: Copilot Agent Mode, Rider AI and Safe Use
The compiler catches an invented API, but only a test that knows the business rule catches wrong behavior that compiles: MidpointRounding.HalfUp in an agent-written test gave CS0117, and an xUnit test with the boundary value 1.025 found banker's rounding in the implementation. Completion, NES, chat and agent; the AI features of Visual Studio 2026 18.x, VS Code 1.145 and Rider 2026.2; copilot-instructions.md, MCP trust and safe-use rules.
8 Nov 2026
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10 min
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5
