Moved 'region' from payload.data to payload root, align with backend contract

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@armco/analytics",
-  "version": "0.3.2",
+  "version": "0.3.3",
   "description": "Universal Analytics Library for Browser and Node.js",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",

src/core/analytics.ts

@@ -33,7 +33,7 @@ import {
   getTimestamp,
   deepMerge,
 } from "../utils/helpers";
-import { ensureRegion } from "../utils/region";
+import { getRegionFallback } from "../utils/region";
 import { resolveEndpoint, detectEnvironment } from "../utils/config-loader";
 import type { EndpointConfig } from "./types";
 
@@ -317,12 +317,13 @@ export class Analytics implements IAnalytics {
       return;
     }
 
-    // Create base event with region enrichment
+    // Create base event with region at top level
     const event: TrackingEvent<T> = {
       eventType,
       timestamp: getTimestamp(),
       eventId: uuidv4(),
-      data: ensureRegion(sanitizeEventData(data || {})) as T,
+      region: getRegionFallback(),
+      data: sanitizeEventData(data || {}) as T,
     };
 
     // Process through plugins

src/core/types.ts

@@ -43,6 +43,7 @@ export interface TrackingEvent<T extends EventData = EventData> {
   eventId: string;
   sessionId?: string;
   userId?: string;
+  region?: string;
   data: T;
 }