Status: IN
The universal absence of input validation is a deliberate architectural choice — solutions define their correctness boundary at LeetCode's stated constraints and are not intended to handle inputs outside that boundary.
Validation omission is a consistent design decision, not accumulated technical debt
Depends on (SL): solutions-no-input-validation, no-input-validation-convention, solutions-trust-leetcode-preconditions, leetcode-solutions-no-validation-convention