fix: make subscription panel reactive to actual tier (#7354)

## Summary

Was previously hard-coded, now is actually reactive to value returned
from server

## Details 

- Update CloudSubscriptionStatusResponse to use generated types from
comfyRegistryTypes which includes subscription_tier
- Add subscriptionTier computed to useSubscription composable
- Make SubscriptionPanel tierName, tierPrice, and tierBenefits reactive
to actual subscription tier from API
- Normalize i18n tier structure with consistent value/label format
- Add FOUNDERS_EDITION tier support

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-7354-fix-make-subscription-panel-reactive-to-actual-tier-2c66d73d365081059a7be875c13fdd0c)
by [Unito](https://www.unito.io)

---------

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

src/platform/cloud/subscription/composables/useSubscription.ts

@@ -5,7 +5,6 @@ import { useCurrentUser } from '@/composables/auth/useCurrentUser'
 import { useFirebaseAuthActions } from '@/composables/auth/useFirebaseAuthActions'
 import { useErrorHandling } from '@/composables/useErrorHandling'
 import { getComfyApiBaseUrl, getComfyPlatformBaseUrl } from '@/config/comfyApi'
-import { MONTHLY_SUBSCRIPTION_PRICE } from '@/config/subscriptionPricesConfig'
 import { t } from '@/i18n'
 import { isCloud } from '@/platform/distribution/types'
 import { useTelemetry } from '@/platform/telemetry'
@@ -14,18 +13,16 @@ import {
   useFirebaseAuthStore
 } from '@/stores/firebaseAuthStore'
 import { useDialogService } from '@/services/dialogService'
+import type { operations } from '@/types/comfyRegistryTypes'
 import { useSubscriptionCancellationWatcher } from './useSubscriptionCancellationWatcher'
 
 type CloudSubscriptionCheckoutResponse = {
   checkout_url: string
 }
 
-export type CloudSubscriptionStatusResponse = {
-  is_active: boolean
-  subscription_id: string
-  renewal_date: string | null
-  end_date?: string | null
-}
+export type CloudSubscriptionStatusResponse = NonNullable<
+  operations['GetCloudSubscriptionStatus']['responses']['200']['content']['application/json']
+>
 
 function useSubscriptionInternal() {
   const subscriptionStatus = ref<CloudSubscriptionStatusResponse | null>(null)
@@ -72,8 +69,8 @@ function useSubscriptionInternal() {
     })
   })
 
-  const formattedMonthlyPrice = computed(
-    () => `$${MONTHLY_SUBSCRIPTION_PRICE.toFixed(0)}`
+  const subscriptionTier = computed(
+    () => subscriptionStatus.value?.subscription_tier ?? null
   )
 
   const buildApiUrl = (path: string) => `${getComfyApiBaseUrl()}${path}`
@@ -227,7 +224,7 @@ function useSubscriptionInternal() {
     isCancelled,
     formattedRenewalDate,
     formattedEndDate,
-    formattedMonthlyPrice,
+    subscriptionTier,
 
     // Actions
     subscribe,