Wait What
Find the immediately preceding substantive assistant response in the current conversation. Exclude tool calls and outputs, hidden reasoning or instructions, and this invocation itself.
If the user gives a hint about what was confusing, use it to focus the explanation. If no qualifying assistant response exists, say so plainly; do not invent prior context or an answer.
Follow the explain skill to re-explain the selected response. This wrapper
only selects the context and focus; it does not duplicate the explanation
process.