사이드바 접기 기능 추가

common/shell/index.ts

@@ -27,6 +27,8 @@ type ShellProfileSummaryParams = {
 
 export const SHELL_THEME_STORAGE_KEY = "admin_theme";
 export const SHELL_SESSION_EXPIRY_STORAGE_KEY = SESSION_EXPIRY_STORAGE_KEY;
+export const SHELL_SIDEBAR_COLLAPSED_STORAGE_KEY =
+  "baron_shell_sidebar_collapsed";
 export type { ShellSidebarNavItem } from "./AppSidebar";
 export { AppSidebar } from "./AppSidebar";
 export { shellLayoutClasses } from "./layout";
@@ -52,6 +54,25 @@ export function writeShellSessionExpiryEnabled(isEnabled: boolean) {
   writeSessionExpiryEnabled(isEnabled);
 }
 
+export function readShellSidebarCollapsed(defaultCollapsed = false) {
+  const stored = window.localStorage.getItem(
+    SHELL_SIDEBAR_COLLAPSED_STORAGE_KEY,
+  );
+
+  if (stored === null) {
+    return defaultCollapsed;
+  }
+
+  return stored === "true";
+}
+
+export function writeShellSidebarCollapsed(isCollapsed: boolean) {
+  window.localStorage.setItem(
+    SHELL_SIDEBAR_COLLAPSED_STORAGE_KEY,
+    String(isCollapsed),
+  );
+}
+
 export function buildShellProfileSummary({
   profileName,
   profileEmail,