diff --git a/web/src/routes/admin/+layout.svelte b/web/src/routes/admin/+layout.svelte
index 586662e..a62f5bf 100644
--- a/web/src/routes/admin/+layout.svelte
+++ b/web/src/routes/admin/+layout.svelte
@@ -11,7 +11,8 @@ import SettingsIcon from '@lucide/svelte/icons/settings';
 	import '../../app.css';
 	import { getToasts } from '$lib/toast.svelte';
 	import { page } from '$app/state';
-	import { checkSession, logout } from '$lib/api';
+	import { checkSession, logout, listAccounts } from '$lib/api';
+	import type { Account } from '$lib/types';
 	import { fetchTimezone, getTimezone } from '$lib/tz';
 	import { goto } from '$app/navigation';
 
@@ -22,6 +23,38 @@ import SettingsIcon from '@lucide/svelte/icons/settings';
 	let appVersion = $state('');
 	let tzLabel = $state('');
 
+	// Global account switcher: akun aktif dipakai sebagai default filter
+	// di Schedules/Posts/Calendar (halaman tetap bisa override).
+	let accounts = $state<Account[]>([]);
+	let accountsLoaded = $state(false);
+	let activeAccountId = $state<string>(
+		typeof localStorage !== 'undefined'
+			? localStorage.getItem('titen.activeAccount') || 'all'
+			: 'all'
+	);
+
+	function setActiveAccount(id: string) {
+		activeAccountId = id;
+		try {
+			localStorage.setItem('titen.activeAccount', id);
+		} catch {
+			/* private mode — ignore */
+		}
+	}
+
+	$effect(() => {
+		if (!authed || accountsLoaded) return;
+		(async () => {
+			try {
+				accounts = (await listAccounts()) ?? [];
+			} catch {
+				/* non-fatal — switcher stays empty */
+			} finally {
+				accountsLoaded = true; // guard against re-fetch loops
+			}
+		})();
+	});
+
 	$effect(() => {
 		if (authed) return;
 		(async () => {
@@ -158,6 +191,28 @@ import SettingsIcon from '@lucide/svelte/icons/settings';
 </div>
 
 <style>
+	.account-switcher {
+		display: flex;
+		flex-direction: column;
+		gap: 0.25rem;
+		margin-block-end: var(--space-sm);
+	}
+
+	.switcher-label {
+		font-size: var(--text-xs);
+		color: var(--color-muted);
+	}
+
+	.switcher-select {
+		width: 100%;
+		padding: 0.375rem 0.5rem;
+		background: var(--surface-raised);
+		border: var(--rule-default);
+		border-radius: var(--radius-md);
+		color: var(--color-ink);
+		font-size: var(--text-sm);
+	}
+
 	.mobile-menu-btn {
 		display: none;
 		position: fixed;
diff --git a/web/src/routes/admin/media/+page.svelte b/web/src/routes/admin/media/+page.svelte
index fbb4f25..0fb7983 100644
--- a/web/src/routes/admin/media/+page.svelte
+++ b/web/src/routes/admin/media/+page.svelte
@@ -285,7 +285,7 @@
 								<Button
 									variant="ghost"
 									size="sm"
-									onclick={() => copyUrl(item.s3_url)}
+									onclick={() => copyUrl(item.s3_url ?? '')}
 									title="Copy URL"
 								>
 									<Copy class="size-4" />
@@ -365,7 +365,7 @@
 						{previewItem.content_type} · {formatSize(previewItem.size_bytes)}
 					</p>
 				</div>
-				<Button size="sm" variant="outline" onclick={() => copyUrl(previewItem!.s3_url)}>
+				<Button size="sm" variant="outline" onclick={() => copyUrl(previewItem!.s3_url ?? '')}>
 					Copy URL
 				</Button>
 			</div>