transform.SetLimit accepts negative and zero values without error

[ajitpratap0]

Description

transform.SetLimit(-1) and transform.SetLimit(0) are accepted without validation. Negative LIMIT is invalid SQL.

Note: SetOffset already validates negative values correctly — SetLimit should match.

Reproduction

rule := transform.SetLimit(-1)
result, err := transform.Apply("SELECT * FROM users", rule)
// err is nil, result contains "LIMIT -1"

Expected

Return an error for negative values. Zero is debatable but should at minimum be documented.