chore: import upstream snapshot with attribution

apps/webapp/app/v3/globalFlagsRegistry.server.ts

@@ -0,0 +1,21 @@
+import { singleton } from "~/utils/singleton";
+import { env } from "~/env.server";
+import { flags } from "~/v3/featureFlags.server";
+import type { FeatureFlagCatalog } from "~/v3/featureFlags";
+import { createReloadingRegistry } from "~/utils/reloadingRegistry.server";
+
+/**
+ * In-memory snapshot of the global feature flags, refreshed every
+ * GLOBAL_FLAGS_RELOAD_INTERVAL_MS. `flags()` reads the DB-backed global values
+ * (no per-org overrides). Read synchronously on the trigger hot path; a cold
+ * read (before the first load) returns undefined and the resolver falls back to
+ * not-migrated.
+ */
+export const globalFlagsRegistry = singleton("globalFlagsRegistry", () =>
+  createReloadingRegistry<Partial<FeatureFlagCatalog>>({
+    name: "global-flags",
+    intervalMs: env.GLOBAL_FLAGS_RELOAD_INTERVAL_MS,
+    autoStart: process.env.NODE_ENV !== "test", // only auto-poll outside tests
+    load: () => flags(),
+  })
+);