Pick the Right GitHub Copilot Mode

Which task is the strongest fit for a more agentic Copilot workflow rather than a plain chat answer? Reproduce a bug, update the failing code path, run targeted tests, and summarize what changed. Explain what this unfamiliar regex does. Rewrite this comment to be clearer. Suggest three better variable names for this function. The first option is multi-step and tool-oriented, so it benefits from an agentic loop. The others are bounded single-turn tasks.

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