feat: enhance sidebar navigation with localStorage state management and section key support

web/components/app-sidebar.tsx

@@ -66,6 +66,7 @@ export function AppSidebar({ ...props }: ComponentProps<typeof Sidebar>) {
           <NavMain
             key={section.titleKey}
             icon={section.icon}
+            sectionKey={section.titleKey}
             title={t(section.titleKey)}
             items={section.items.map((item) => ({
               ...item,

web/components/nav-main.tsx

@@ -7,7 +7,9 @@ import { useEffect, useState } from "react"
 
 import {
   dashboardNavSectionHasActiveItem,
+  getDashboardNavSectionStorageKey,
   isDashboardNavItemActive,
+  parseDashboardNavSectionOpenState,
 } from "@/lib/navigation-active"
 import {
   Collapsible,
@@ -26,10 +28,12 @@ import {
 
 export function NavMain({
   icon,
+  sectionKey,
   title,
   items,
 }: {
   icon?: React.ReactNode
+  sectionKey: string
   title: string
   items: ReadonlyArray<{
     title: string
@@ -39,20 +43,38 @@ export function NavMain({
 }) {
   const pathname = usePathname()
   const hasActiveItem = dashboardNavSectionHasActiveItem(items, pathname)
-  const [open, setOpen] = useState(true)
+  const storageKey = getDashboardNavSectionStorageKey(sectionKey)
+  const [open, setOpen] = useState(() => {
+    if (typeof window === "undefined") {
+      return true
+    }
+    return parseDashboardNavSectionOpenState(window.localStorage.getItem(storageKey)) ?? true
+  })
 
   useEffect(() => {
+    const storedOpen = parseDashboardNavSectionOpenState(
+      window.localStorage.getItem(storageKey)
+    )
+    if (storedOpen !== undefined) {
+      setOpen(storedOpen)
+      return
+    }
     if (hasActiveItem) {
       setOpen(true)
     }
-  }, [hasActiveItem])
+  }, [hasActiveItem, storageKey])
+
+  const handleOpenChange = (nextOpen: boolean) => {
+    setOpen(nextOpen)
+    window.localStorage.setItem(storageKey, String(nextOpen))
+  }
 
   return (
     <SidebarGroup className="px-2 py-0 first:pt-2 last:pb-2">
       <SidebarMenu>
         <Collapsible
           open={open}
-          onOpenChange={setOpen}
+          onOpenChange={handleOpenChange}
           className="group/collapsible"
           render={<SidebarMenuItem />}
         >

web/lib/navigation-active.test.mjs

@@ -63,3 +63,23 @@ describe("dashboardNavSectionHasActiveItem", () => {
     assert.equal(dashboardNavSectionHasActiveItem(items, "/dashboard/users"), false)
   })
 })
+
+describe("dashboard nav section storage helpers", () => {
+  it("builds stable localStorage keys from section identifiers", async () => {
+    const { getDashboardNavSectionStorageKey } = await loadModule()
+
+    assert.equal(
+      getDashboardNavSectionStorageKey("nav.receptionCenter"),
+      "dashboard.sidebar.navSection.nav.receptionCenter.open"
+    )
+  })
+
+  it("parses stored open states and ignores unknown values", async () => {
+    const { parseDashboardNavSectionOpenState } = await loadModule()
+
+    assert.equal(parseDashboardNavSectionOpenState("true"), true)
+    assert.equal(parseDashboardNavSectionOpenState("false"), false)
+    assert.equal(parseDashboardNavSectionOpenState(null), undefined)
+    assert.equal(parseDashboardNavSectionOpenState("bad"), undefined)
+  })
+})

web/lib/navigation-active.ts

@@ -2,6 +2,8 @@ export type DashboardNavActiveItem = {
   url: string
 }
 
+const DASHBOARD_NAV_SECTION_STORAGE_PREFIX = "dashboard.sidebar.navSection"
+
 function normalizePath(path: string) {
   return path !== "/" ? path.replace(/\/+$/, "") : path
 }
@@ -22,3 +24,17 @@ export function dashboardNavSectionHasActiveItem(
 ) {
   return items.some((item) => isDashboardNavItemActive(pathname, item.url))
 }
+
+export function getDashboardNavSectionStorageKey(sectionKey: string) {
+  return `${DASHBOARD_NAV_SECTION_STORAGE_PREFIX}.${sectionKey}.open`
+}
+
+export function parseDashboardNavSectionOpenState(value: string | null) {
+  if (value === "true") {
+    return true
+  }
+  if (value === "false") {
+    return false
+  }
+  return undefined
+}