This skill should be used for thorough, multi-source research that must be credible and well-sourced, and for turning that research into a synthesis. Trigger phrases: "deep research", "comprehensive research", "research report", "investigate X thoroughly", "find best practices with sources", "market/competitive research", "synthesize these findings", "fact-check this", "is this claim actually true?". Use it whenever a question needs rigorous, cited research rather than a quick answer.