feat: adding session log (#3279)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Session validation now keeps locale, currency and sales channel in
sync for a more consistent user experience.
  * Made localization settings retrieval available for integrations.

* **Chores**
  * Added diagnostic trace logging to aid debugging.
* Enabled production client-side source maps and inline source maps for
the SDK build.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: ommeirelles

packages/core/src/sdk/localization/useLocalizationConfig.tsx

@@ -88,7 +88,7 @@ function getSettingsFromConfig(
   }
 }
 
-function getSettings(params?: { url?: string | URL }) {
+export function getSettings(params?: { url?: string | URL }) {
   let url = params?.url ?? ''
   const defaultConfig = config.localization.locales[
     config.localization.defaultLocale

packages/core/src/sdk/session/index.ts

@@ -18,6 +18,7 @@ import { cartStore } from '../cart'
 import { request } from '../graphql/request'
 import { createValidationStore, useStore } from '../useStore'
 import { getPostalCode } from '../userLocation/index'
+import { getSettings } from '../localization/useLocalizationConfig'
 
 const SESSION_READY_KEY = 'faststore_session_ready'
 
@@ -79,6 +80,22 @@ export const mutation = gql(`
 `)
 
 export const validateSession = async (session: Session) => {
+  const settings = getSettings()
+  const newChanel = JSON.stringify({
+    ...(JSON.parse(session.channel ?? '{}') ?? {}),
+    salesChannel: settings.salesChannel,
+  })
+
+  if (
+    newChanel !== session.channel ||
+    settings.locale !== session.locale ||
+    deepEqual(settings.currency, session.currency) === false
+  ) {
+    session.locale = settings.locale
+    session.currency = settings.currency
+    session.channel = newChanel
+  }
+
   // If deliveryPromise is enabled and there is no postalCode in the session
   if (
     storeConfig.deliveryPromise?.enabled &&