Socratic questioning through an architectural, design, or technical decision. Surfaces the decision that must be made, asks one open-ended question at a time, and critiques the user's own answer instead of handing over options to pick from. Use when the user must choose between architectures, designs, libraries, data models, schemas, or protocols and wants to reason it out themselves — triggers include "/socratic-design", "help me decide", "walk me through this decision", "question me on this design", "I need to figure out how to structure X", "pressure-test my thinking on X".