feat(useRemoteWidget): add cloud firebase auth (#6249)

## Summary

Add Firebase authentication for `useRemoteWidget` Cloud API calls.

## Changes

- Incorporate changes from
c27edb7e94
- Add tests

## Screenshots


<img width="849" height="552" alt="Screenshot 2025-10-23 at 8 41 00 PM"
src="https://github.com/user-attachments/assets/23e07aac-22ea-4222-a90c-00335937a011"
/>

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-6249-feat-useRemoteWidget-add-cloud-firebase-auth-2966d73d36508121935efc9ed07c47d2)
by [Unito](https://www.unito.io)

src/renderer/extensions/vueNodes/widgets/composables/useRemoteWidget.ts

@@ -2,8 +2,10 @@ import axios from 'axios'
 
 import { useChainCallback } from '@/composables/functional/useChainCallback'
 import type { IWidget, LGraphNode } from '@/lib/litegraph/src/litegraph'
+import { isCloud } from '@/platform/distribution/types'
 import type { RemoteWidgetConfig } from '@/schemas/nodeDefSchema'
 import { api } from '@/scripts/api'
+import { useFirebaseAuthStore } from '@/stores/firebaseAuthStore'
 
 const MAX_RETRIES = 5
 const TIMEOUT = 4096
@@ -19,6 +21,17 @@ interface CacheEntry<T> {
   failed?: boolean
 }
 
+async function getAuthHeaders() {
+  if (isCloud) {
+    const authStore = useFirebaseAuthStore()
+    const authHeader = await authStore.getAuthHeader()
+    return {
+      ...(authHeader && { headers: authHeader })
+    }
+  }
+  return {}
+}
+
 const dataCache = new Map<string, CacheEntry<any>>()
 
 const createCacheKey = (config: RemoteWidgetConfig): string => {
@@ -57,11 +70,16 @@ const fetchData = async (
   controller: AbortController
 ) => {
   const { route, response_key, query_params, timeout = TIMEOUT } = config
+
+  const authHeaders = await getAuthHeaders()
+
   const res = await axios.get(route, {
     params: query_params,
     signal: controller.signal,
-    timeout
+    timeout,
+    ...authHeaders
   })
+
   return response_key ? res.data[response_key] : res.data
 }