Function fail_no_validation_rules 

pub fn fail_no_validation_rules() -> PokaYokeResult

Create a failing result for models without PokaYoke implementation.

Use this when saving models that don’t implement the trait. Returns a result with score=0 and a single failing gate.

Example

use aprender::format::validation::fail_no_validation_rules;

let result = fail_no_validation_rules();
assert_eq!(result.score, 0);
assert_eq!(result.grade(), "F");
assert!(!result.passed());