fix: sync flow on_behalf_of_email on load (#8149)

frontend/src/lib/components/FlowBuilder.svelte

@@ -137,6 +137,13 @@
 	let preserveOnBehalfOf = writable(false)
 	let savedOnBehalfOfEmail = writable<string | undefined>(savedFlow?.on_behalf_of_email)
 
+	// Keep savedOnBehalfOfEmail in sync when savedFlow is loaded asynchronously
+	$effect(() => {
+		if (savedFlow?.on_behalf_of_email !== undefined) {
+			savedOnBehalfOfEmail.set(savedFlow.on_behalf_of_email)
+		}
+	})
+
 	// used for new flows for captures
 	let fakeInitialPath =
 		'u/' +

frontend/src/lib/components/ScriptBuilder.svelte

@@ -1650,6 +1650,11 @@
 														customEmail={customOnBehalfOfEmail}
 														isDeployment={false}
 													/>
+												{:else if script.on_behalf_of_email && !canPreserve}
+													<span class="text-xs text-tertiary">
+														Currently: <span class="font-medium">{originalOnBehalfOfEmail ?? script.on_behalf_of_email}</span>.
+														Will be set to <span class="font-medium">{$userStore?.email}</span> on deploy (requires admin or wm_deployers group to override)
+													</span>
 												{/if}
 											</span>
 										</div>

frontend/src/lib/components/flows/content/FlowSettings.svelte

@@ -82,7 +82,7 @@
 		{ name: 'Early Return', active: Boolean(flowStore.val.value.early_return) },
 		{ name: 'Dedicated Worker', active: Boolean(flowStore.val.dedicated_worker) },
 		{ name: 'Concurrent Limit', active: Boolean(flowStore.val.value.concurrent_limit) },
-		{ name: 'Run on Behalf of Last Editor', active: Boolean(flowStore.val.on_behalf_of_email) },
+		{ name: `Run on Behalf of ${flowStore.val.on_behalf_of_email ?? 'Last Editor'}`, active: Boolean(flowStore.val.on_behalf_of_email) },
 		{ name: 'Worker Tag', active: displayWorkerTagPicker }
 	])
 
@@ -428,6 +428,11 @@
 							customEmail={customOnBehalfOfEmail}
 							isDeployment={false}
 						/>
+					{:else if flowStore.val.on_behalf_of_email && !canPreserve}
+						<span class="text-xs text-tertiary">
+							Currently: <span class="font-medium">{$savedOnBehalfOfEmail ?? flowStore.val.on_behalf_of_email}</span>.
+							Will be set to <span class="font-medium">{$userStore?.email}</span> on deploy (requires admin or wm_deployers group to override)
+						</span>
 					{/if}
 				</span>