fix: prevent raw app iframe reload on userStore refresh (#8455)

Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/lib/components/raw_apps/RawAppPreview.svelte

@@ -3,7 +3,7 @@
 	import RawAppBackgroundRunner from './RawAppBackgroundRunner.svelte'
 	import type { Runnable } from './rawAppPolicy'
 	import { htmlContent } from './utils'
-	import { onMount } from 'svelte'
+	import { onMount, untrack } from 'svelte'
 
 	interface Props {
 		workspace: string
@@ -26,10 +26,14 @@
 
 	// Use blob URL instead of srcDoc to give the iframe a proper origin.
 	// srcDoc iframes have "null" origin which breaks URL constructor in routers.
+	// untrack(user) so that userStore refreshes don't regenerate the blob URL
+	// and cause the iframe to fully reload (losing all state).
+	// The user context is only needed for initial render.
 	let blobUrl = $derived.by(() => {
 		if (!secret) return undefined
+		const u = untrack(() => user)
 		const baseUrl = typeof window !== 'undefined' ? window.location.origin : ''
-		const html = htmlContent(workspace, secret, { ctx: user, workspace }, baseUrl, initialHash)
+		const html = htmlContent(workspace, secret, { ctx: u, workspace }, baseUrl, initialHash)
 		const blob = new Blob([html], { type: 'text/html' })
 		return URL.createObjectURL(blob)
 	})

frontend/src/routes/(root)/(logged)/+layout.svelte

@@ -50,6 +50,7 @@
 	import { syncTutorialsTodos } from '$lib/tutorialUtils'
 	import { ArrowLeft, Search, WandSparkles } from 'lucide-svelte'
 	import { getUserExt } from '$lib/user'
+	import { deepEqual } from 'fast-equals'
 	import { twMerge } from 'tailwind-merge'
 	import OperatorMenu from '$lib/components/sidebar/OperatorMenu.svelte'
 	import GlobalSearchModal from '$lib/components/search/GlobalSearchModal.svelte'
@@ -125,7 +126,9 @@
 				console.error('Could not persist workspace to local storage', e)
 			}
 			const user = await getUserExt(workspace)
-			userStore.set(user)
+			if (!deepEqual(user, $userStore)) {
+				userStore.set(user)
+			}
 			if (isCloudHosted() && user?.is_admin) {
 				isPremiumStore.set(await WorkspaceService.getIsPremium({ workspace }))
 			}