Call stata_get_results(include_matrices=True, as_json=True).
Present the results in a structured format:
- r() scalars: name → value pairs (e.g., r(N), r(mean), r(sd))
- e() scalars: model-level results (e.g., e(N), e(r2), e(F))
- e() matrices: if present, display b (coefficients) and V (variance-covariance) as formatted tables
- s() macros: string results if any
If no results are stored (empty response), tell the user to run a Stata command first (e.g., regress, summarize, ttest).
If the user needs Mata state, note they can ask you to call stata_get_results(include_mata=True).