Audit Finding (API Design, Low)

Location: crates/agnix-core/src/pipeline.rs:38

ValidationResult is #[non_exhaustive] with public fields. The attribute only prevents struct literal construction but doesn't protect field access. This is inconsistent with the builder pattern used for LintConfig.

Fix: Either make fields private with getter methods, or remove #[non_exhaustive] since the struct is simple.

Found by /audit-project