Generalize queue logic

apps/api/src/database/migrations/2026-06-03.ts

@@ -17,16 +17,6 @@ export async function up(db: Kysely<any>): Promise<void> {
         .addColumn("has_failed", "boolean", (cb) => cb.notNull().defaultTo(false))
         .execute()
 
-    // INDEX: ONE_ACTIVE_PRODUCT_SYNC
-    await db.schema.createIndex("idx_one_active_product_sync")
-        .on("product_syncs")
-        .column("ended_at")
-        .unique()
-        .where(sql.ref("started_at"), "is not", null)
-        .where("ended_at", "is", null)
-        .nullsNotDistinct()
-        .execute();
-
     // TABLE: STANDARDS_DATASETS
     await db.schema.createTable("standards_datasets")
         .$call(addDefaultColumns)
@@ -68,9 +58,6 @@ export async function down(db: Kysely<any>): Promise<void> {
     // TABLE: PRODUCT_SYNCS
     await db.schema.dropTable("product_syncs").ifExists().execute()
 
-    // INDEX: ONE_ACTIVE_PRODUCT_SYNC
-    await db.schema.dropIndex("idx_one_active_product_sync").ifExists().execute();
-
     // TABLE: CALCULATORS
     await db.schema.dropTable("calculators").ifExists().execute()