Open-ended deep research with repeated broadening/deepening loops, explicit reframing, falsification, and hypothesis/contradiction tracking to produce a sourced research narrative. Use when the user asks for open-ended research, exploratory investigation, "deep research", "开放式研究", "做假设/证伪/找反例", or wants iterative broadening and deepening until insight stabilizes.
Conduct broad-to-deep web research with iterative search refinement, primary-source verification, and sourced Markdown reporting. Use when the user asks for deep research, extensive search, “search broadly first then go deeper”, latest information with citations, or a final report/MD document. Also use for Chinese requests such as “深度研究”, “广泛搜索”, “先广后深”, “越搜越深越搜越广”, “给出来源链接”, or “最后写成 md 文档”.