chore: cross-ref enum/CHECK constraints (#9); drop dead clone + harden smoke test (#4)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

crates/domain/src/audit.rs

@@ -4,6 +4,10 @@ use time::OffsetDateTime;
 use uuid::Uuid;
 
 /// What kind of change an audit entry records.
+///
+/// NOTE: kept in sync by hand with the
+/// `CHECK (action IN ('created', 'updated', 'deleted'))` constraint in
+/// `crates/db/migrations/0001_audit_log.sql` — add a variant in both places.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(rename_all = "lowercase")]
 pub enum AuditAction {

crates/domain/src/authority.rs

@@ -3,6 +3,10 @@ use serde::{Deserialize, Serialize};
 use crate::{AuthorityId, LocalizedLabel};
 
 /// The kind of authority record.
+///
+/// NOTE: kept in sync by hand with the
+/// `CHECK (kind IN ('person', 'organisation', 'place'))` constraint in
+/// `crates/db/migrations/0002_vocabularies_authorities.sql` — add a variant in both places.
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Serialize, Deserialize)]
 #[serde(rename_all = "lowercase")]
 pub enum AuthorityKind {