diff --git a/ui/src/stores/sidebarSlice.ts b/ui/src/stores/sidebarSlice.ts
new file mode 100644
index 00000000..51f6e0ce
--- /dev/null
+++ b/ui/src/stores/sidebarSlice.ts
@@ -0,0 +1,19 @@
+export type SidebarSlice = {
+  sidebarOpen: boolean
+  toggleSidebar: () => void
+  setSidebarOpen: (open: boolean) => void
+}
+
+type SetSidebarState = (
+  partial: Partial<SidebarSlice> | ((state: SidebarSlice) => Partial<SidebarSlice>),
+) => void
+
+type GetSidebarState = () => SidebarSlice
+
+export function createSidebarSlice(set: SetSidebarState, get: GetSidebarState): SidebarSlice {
+  return {
+    sidebarOpen: false,
+    toggleSidebar: () => set({ sidebarOpen: !get().sidebarOpen }),
+    setSidebarOpen: open => set({ sidebarOpen: open }),
+  }
+}
diff --git a/ui/src/stores/useStore.ts b/ui/src/stores/useStore.ts
index b3391c9b..87e46dcd 100644
--- a/ui/src/stores/useStore.ts
+++ b/ui/src/stores/useStore.ts
@@ -13,6 +13,7 @@ import { llmActivityPreview } from '../lib/llmActivityPreview'
 import { createDeveloperModeSlice } from './developerModeSlice'
 import { createDirectorSlice } from './directorSlice'
 import { createSettingsSlice } from './settingsSlice'
+import { createSidebarSlice } from './sidebarSlice'
 import { createThemeSlice } from './themeSlice'
 import { markJobsCancelling, prependJob, removeJob, updateJob, withJobs } from './jobReducers'
 import {
@@ -2330,6 +2331,10 @@ export const useStore = create<AppState>((set, get) => ({
     partial => set(partial as never),
     () => get(),
   ),
+  ...createSidebarSlice(
+    partial => set(partial as never),
+    () => get(),
+  ),
   ...createDeveloperModeSlice(
     partial => set(partial as never),
     () => get(),
@@ -3041,10 +3046,6 @@ export const useStore = create<AppState>((set, get) => ({
     set(s => ({ params: { ...s.params, ...partial } }))
   },
 
-  sidebarOpen: false,
-  toggleSidebar: () => set(s => ({ sidebarOpen: !s.sidebarOpen })),
-  setSidebarOpen: (open) => set({ sidebarOpen: open }),
-
   // CivitAI LoRA Browser
   // Director Pipeline Dashboard
   retakeDialogOpen: false,
diff --git a/ui/tests/architectureSlices.test.mjs b/ui/tests/architectureSlices.test.mjs
index 82986f2d..1a98bfb6 100644
--- a/ui/tests/architectureSlices.test.mjs
+++ b/ui/tests/architectureSlices.test.mjs
@@ -119,6 +119,27 @@ test('settings slice toggles open and tab through the public facade', async () =
   assert.equal(useStore.getState().settingsOpen, false)
 })
 
+test('sidebar slice toggles open through the public facade', async () => {
+  const { createSidebarSlice } = await import('../src/stores/sidebarSlice.ts')
+  let state
+  const set = update => {
+    const partial = typeof update === 'function' ? update(state) : update
+    state = { ...state, ...partial }
+  }
+  state = createSidebarSlice(set, () => state)
+  assert.equal(state.sidebarOpen, false)
+  state.toggleSidebar()
+  assert.equal(state.sidebarOpen, true)
+  state.setSidebarOpen(false)
+  assert.equal(state.sidebarOpen, false)
+
+  const { useStore } = await import('../src/stores/useStore.ts')
+  useStore.getState().setSidebarOpen(true)
+  assert.equal(useStore.getState().sidebarOpen, true)
+  useStore.getState().toggleSidebar()
+  assert.equal(useStore.getState().sidebarOpen, false)
+})
+
 test('developer-mode slice persists the local flag through the public facade', async () => {
   if (!globalThis.localStorage) {
     const { JSDOM } = await import('jsdom')