diff --git a/ka-note/VERSION b/ka-note/VERSION
index ebb907e..b89c021 100644
--- a/ka-note/VERSION
+++ b/ka-note/VERSION
@@ -1 +1 @@
-1.1.71
\ No newline at end of file
+1.1.73
\ No newline at end of file
diff --git a/ka-note/client/src/lib/components/CommandBar.svelte b/ka-note/client/src/lib/components/CommandBar.svelte
index f837380..7ba2e1e 100644
--- a/ka-note/client/src/lib/components/CommandBar.svelte
+++ b/ka-note/client/src/lib/components/CommandBar.svelte
@@ -5,6 +5,7 @@
 	import { allActiveContexts } from "$lib/stores/agenda";
 	import { allPages } from "$lib/stores/wiki";
 	import { currentScope, scopeSettings } from "$lib/stores/scopeContext";
+	import { sidebarCollapsed } from "$lib/stores/sidebarCollapsed";
 	import {
 		getOrCreateJournalTopic,
 		createHistoryEntry,
@@ -373,6 +374,20 @@
 				});
 			}
 
+			if ("/sidebar".startsWith(cmd)) {
+				actions.push({
+					id: "cmd-sidebar",
+					type: "action",
+					icon: $sidebarCollapsed ? "▶" : "◀",
+					label: $sidebarCollapsed ? "Sidebar einblenden" : "Sidebar ausblenden",
+					badge: "BEFEHL",
+					action: () => {
+						sidebarCollapsed.toggle();
+						closeBar();
+					},
+				});
+			}
+
 			if ("/jf".startsWith(cmd)) {
 				actions.push({
 					id: "cmd-jf",
diff --git a/ka-note/client/src/lib/stores/sidebarCollapsed.ts b/ka-note/client/src/lib/stores/sidebarCollapsed.ts
new file mode 100644
index 0000000..c967016
--- /dev/null
+++ b/ka-note/client/src/lib/stores/sidebarCollapsed.ts
@@ -0,0 +1,27 @@
+import { writable } from 'svelte/store';
+
+const KEY = 'sidebarCollapsed';
+
+function createSidebarCollapsed() {
+	const initial = typeof localStorage !== 'undefined'
+		? localStorage.getItem(KEY) === 'true'
+		: false;
+	const { subscribe, set, update } = writable(initial);
+
+	return {
+		subscribe,
+		toggle() {
+			update(v => {
+				const next = !v;
+				localStorage.setItem(KEY, String(next));
+				return next;
+			});
+		},
+		set(value: boolean) {
+			localStorage.setItem(KEY, String(value));
+			set(value);
+		},
+	};
+}
+
+export const sidebarCollapsed = createSidebarCollapsed();
diff --git a/ka-note/client/src/routes/+layout.svelte b/ka-note/client/src/routes/+layout.svelte
index 40a2c18..bc6f91b 100644
--- a/ka-note/client/src/routes/+layout.svelte
+++ b/ka-note/client/src/routes/+layout.svelte
@@ -5,6 +5,7 @@
 	import AiLockBanner from "$lib/components/AiLockBanner.svelte";
 	import CommandBar from "$lib/components/CommandBar.svelte";
 	import { commandBarOpen } from "$lib/stores/commandBar";
+	import { sidebarCollapsed } from "$lib/stores/sidebarCollapsed";
 	import { seedIfEmpty } from "$lib/db/seed";
 	import { sync } from "$lib/sync/syncService";
 	import { refreshLockStatus } from "$lib/stores/aiLock";
@@ -81,6 +82,10 @@
 			e.preventDefault();
 			$commandBarOpen = !$commandBarOpen;
 		}
+		if ((e.ctrlKey || e.metaKey) && e.key.toLowerCase() === "b") {
+			e.preventDefault();
+			sidebarCollapsed.toggle();
+		}
 	}
 
 	afterNavigate(({ to }) => {
@@ -174,14 +179,28 @@
 
 		<!-- Desktop sidebar -->
 		<aside
-			class="hidden md:flex md:w-[250px] md:flex-col md:border-r md:border-border md:bg-sidebar md:p-5 md:overflow-y-auto"
+			class="hidden md:flex md:flex-col md:border-r md:border-border md:bg-sidebar md:overflow-y-auto transition-all duration-200
+				{$sidebarCollapsed ? 'md:w-0 md:p-0 md:overflow-hidden md:border-r-0' : 'md:w-[250px] md:p-5'}"
 		>
-			<Sidebar onnavigate={closeSidebar} />
+			{#if !$sidebarCollapsed}
+				<Sidebar onnavigate={closeSidebar} />
+			{/if}
 		</aside>
 
 		<!-- Main content -->
 		<main class="flex-1 overflow-y-auto p-5 pt-safe md:pt-5 pb-20 md:pb-5">
 			<div class="mx-auto max-w-[900px]">
+				<!-- Desktop sidebar toggle button -->
+				<div class="hidden md:flex mb-3 -mt-1">
+					<button
+						onclick={() => sidebarCollapsed.toggle()}
+						class="text-muted hover:text-white transition-colors text-xs flex items-center gap-1 opacity-40 hover:opacity-100"
+						aria-label="Sidebar ein-/ausblenden"
+						title="Sidebar ein-/ausblenden (Ctrl+B)"
+					>
+						{$sidebarCollapsed ? '›' : '‹'}
+					</button>
+				</div>
 				<AiLockBanner />
 				{@render children()}
 			</div>
diff --git a/ka-note/server/drizzle/0011_pages_is_favorite.sql b/ka-note/server/drizzle/0011_pages_is_favorite.sql
index 5a1176e..90a79f5 100644
--- a/ka-note/server/drizzle/0011_pages_is_favorite.sql
+++ b/ka-note/server/drizzle/0011_pages_is_favorite.sql
@@ -1 +1 @@
--- no-op: is_favorite column added in 0012_chunky_stature.sql
+SELECT 1; -- no-op: is_favorite column added in 0012_chunky_stature.sql