fix(migrations): adopt published ledgerless baseline

crates/crank-registry/tests/integration/migrations.rs

@@ -2,6 +2,7 @@ use crank_registry::{MigrationAuthority, MigrationPreflight, PostgresRegistry};
 use sqlx::Row;
 
 mod artifact_metadata;
+mod legacy_adoption;
 mod rollback;
 
 static EVENT_TRIGGER_TEST_LOCK: tokio::sync::Mutex<()> = tokio::sync::Mutex::const_new(());
@@ -153,7 +154,7 @@ async fn changed_checksum_fails_closed_without_repair() {
     );
 }
 #[tokio::test]
-async fn legacy_core_baseline_is_consolidated_without_data_loss() {
+async fn ledgerless_legacy_baseline_is_consolidated_without_data_loss() {
     let database_url = crank_test_support::postgres_schema_url("test_legacy_core").await;
     let pool = sqlx::PgPool::connect(&database_url).await.unwrap();
     MigrationAuthority::apply(&pool).await.unwrap();
@@ -221,7 +222,8 @@ async fn legacy_core_baseline_is_consolidated_without_data_loss() {
     }
     sqlx::query(
         "drop table __crank_migrations, __crank_migration_legacy_audit,
-         __crank_mcp_migrations, mcp_transport_sessions, __crank_ext_migrations",
+         __crank_mcp_migrations, mcp_transport_sessions, __crank_ext_migrations,
+         __crank_core_migrations",
     )
     .execute(&pool)
     .await
@@ -229,7 +231,7 @@ async fn legacy_core_baseline_is_consolidated_without_data_loss() {
     assert_eq!(
         MigrationAuthority::preflight(&pool).await.unwrap(),
         MigrationPreflight::MigrationRequired {
-            current: 1,
+            current: 0,
             target: 13,
         }
     );