chore: import upstream snapshot with attribution

apps/webapp/app/services/clickhouse/clickhouseFactoryInstance.server.ts

@@ -0,0 +1,13 @@
+import { organizationDataStoresRegistry } from "~/services/dataStores/organizationDataStoresRegistryInstance.server";
+import { singleton } from "~/utils/singleton";
+import { ClickhouseFactory } from "./clickhouseFactory.server";
+
+/**
+ * Production singleton wired to the global organization data-stores registry.
+ * Import this only from app/runtime code — not from tests that construct a
+ * {@link ClickhouseFactory} with a stub registry (see `clickhouseFactory.server.ts`).
+ */
+export const clickhouseFactory = singleton(
+  "clickhouseFactory",
+  () => new ClickhouseFactory(organizationDataStoresRegistry)
+);