Add OpenAPI import backend

crates/crank-registry/src/migrations.rs

@@ -451,6 +451,25 @@ pub async fn apply_postgres(pool: &PgPool) -> Result<(), sqlx::Error> {
     .execute(pool)
     .await?;
 
+    query(
+        "create table if not exists import_jobs (
+            id text primary key,
+            workspace_id text not null references workspaces(id) on delete cascade,
+            kind text not null,
+            source_format text not null,
+            source_version text null,
+            status text not null,
+            preview_payload jsonb not null,
+            created_operation_ids jsonb not null default '[]'::jsonb,
+            error_text text null,
+            created_at timestamptz not null,
+            expires_at timestamptz not null,
+            finished_at timestamptz null
+        )",
+    )
+    .execute(pool)
+    .await?;
+
     query(
         "create table if not exists agents (
             id text primary key,