Comfy Cloud Badge indicator (#6043)

## Summary

<!-- One sentence describing what changed and why. -->

## Changes

- **What**: <!-- Core functionality added/modified -->
- **Breaking**: <!-- Any breaking changes (if none, remove this line)
-->
- **Dependencies**: <!-- New dependencies (if none, remove this line)
-->

## Review Focus

<!-- Critical design decisions or edge cases that need attention -->

<!-- If this PR fixes an issue, uncomment and update the line below -->
<!-- Fixes #ISSUE_NUMBER -->

## Screenshots (if applicable)

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┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6043-Comfy-Cloud-Badge-indicator-28b6d73d365081b8b549ecc3beb2c132)
by [Unito](https://www.unito.io)

src/extensions/core/cloudBadge.ts

@@ -0,0 +1,15 @@
+import { isProductionEnvironment } from '@/config/environment'
+import { useExtensionService } from '@/services/extensionService'
+
+useExtensionService().registerExtension({
+  name: 'Comfy.CloudBadge',
+  // Only show badge when running in cloud environment
+  topbarBadges: isProductionEnvironment()
+    ? [
+        {
+          label: 'BETA',
+          text: 'Comfy Cloud'
+        }
+      ]
+    : undefined
+})

src/extensions/core/index.ts

@@ -1,4 +1,5 @@
 import './clipspace'
+import './cloudBadge'
 import './contextMenuFilter'
 import './dynamicPrompts'
 import './editAttention'