Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is already 100%, so the baseline is 3. The description adds useful semantics for the nested schedule parameter, including special values like skip, prep_day_N, and time limits, plus the effect of omitted meals; it does not explain every profile key, but it adds significant value beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.