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/types/comfy.ts

@@ -18,6 +18,14 @@ export interface AboutPageBadge {
   icon: string
 }
 
+export interface TopbarBadge {
+  text: string
+  /**
+   * Optional badge label (e.g., "BETA", "ALPHA", "NEW")
+   */
+  label?: string
+}
+
 type MenuCommandGroup = {
   /**
    * The path to the menu group.
@@ -71,6 +79,10 @@ export interface ComfyExtension {
    * Badges to add to the about page
    */
   aboutPageBadges?: AboutPageBadge[]
+  /**
+   * Badges to add to the topbar
+   */
+  topbarBadges?: TopbarBadge[]
   /**
    * Allows any initialisation, e.g. loading resources. Called after the canvas is created but before nodes are added
    * @param app The ComfyUI app instance