feat(desktop): macOS hidden-inset chrome and floating chat title

Apply hiddenInset titleBarStyle on darwin so the system titlebar is hidden
but native traffic lights remain. Reusable web sidebars inject a new
DesktopShellKey to reserve a 36px TopBar that holds the traffic-light
inset (drag region + right border) without colliding with the bot list,
and the sidebar stays pinned open in the Electron shell so window resize
doesn't fight the layout.

Overlay a centered "Title - BotName" header above the chat content with a
bottom shadow gradient that obscures scrolling messages, and reserve top
padding so the first message stays visible when content fits the viewport.
Route the sidebar + action by path (/settings/bots) so the chat router's
/settings/* interception forwards it to the settings window cleanly while
remaining a normal navigation in web.

apps/desktop/src/main/index.ts

@@ -33,9 +33,17 @@ function loadRendererEntry(window: BrowserWindow, entry: 'index' | 'settings'):
 // output is what wires the IPC bridge into the renderer.
 const PRELOAD_FILE = '../preload/index.mjs'
 
+// On macOS we hide the system titlebar but keep the native traffic lights
+// (`hiddenInset`). Renderers reserve space for them via a custom TopBar.
+const macTitleBarOptions: Partial<Electron.BrowserWindowConstructorOptions>
+  = process.platform === 'darwin'
+    ? { titleBarStyle: 'hiddenInset', trafficLightPosition: { x: 14, y: 12 } }
+    : {}
+
 function createChatWindow(): BrowserWindow {
   const window = new BrowserWindow({
     ...CHAT_DEFAULTS,
+    ...macTitleBarOptions,
     show: false,
     autoHideMenuBar: true,
     title: 'Memoh',
@@ -63,6 +71,7 @@ function createChatWindow(): BrowserWindow {
 function createSettingsWindow(parent: BrowserWindow | null): BrowserWindow {
   const window = new BrowserWindow({
     ...SETTINGS_DEFAULTS,
+    ...macTitleBarOptions,
     show: false,
     autoHideMenuBar: true,
     title: 'Memoh · Settings',

apps/desktop/src/renderer/src/chat/App.vue

@@ -1,9 +1,12 @@
 <script setup lang="ts">
+import { provide } from 'vue'
 import { RouterView } from 'vue-router'
 import { Toaster } from '@memohai/ui'
 import 'vue-sonner/style.css'
 import { useSettingsStore } from '@memohai/web/store/settings'
+import { DesktopShellKey } from '@memohai/web/lib/desktop-shell'
 
+provide(DesktopShellKey, true)
 useSettingsStore()
 </script>
 

apps/desktop/src/renderer/src/settings/App.vue

@@ -1,10 +1,13 @@
 <script setup lang="ts">
+import { provide } from 'vue'
 import { Toaster, SidebarInset } from '@memohai/ui'
 import 'vue-sonner/style.css'
 import MainLayout from '@memohai/web/layout/main-layout/index.vue'
 import SettingsSidebar from '@memohai/web/components/settings-sidebar/index.vue'
 import { useSettingsStore } from '@memohai/web/store/settings'
+import { DesktopShellKey } from '@memohai/web/lib/desktop-shell'
 
+provide(DesktopShellKey, true)
 useSettingsStore()
 </script>
 

apps/desktop/src/renderer/types/web-stubs.d.ts

@@ -34,6 +34,11 @@ declare module '@memohai/web/store/settings' {
   export function useSettingsStore(): unknown
 }
 
+declare module '@memohai/web/lib/desktop-shell' {
+  import type { InjectionKey } from 'vue'
+  export const DesktopShellKey: InjectionKey<boolean>
+}
+
 declare module '@memohai/web/style.css'
 
 // Fallback for every Vue SFC reachable through the @memohai/web/* wildcard

apps/web/package.json

@@ -10,6 +10,7 @@
     "./router": "./src/router.ts",
     "./i18n": "./src/i18n.ts",
     "./api-client": "./src/lib/api-client.ts",
+    "./lib/desktop-shell": "./src/lib/desktop-shell.ts",
     "./style.css": "./src/style.css",
     "./*": "./src/*"
   },

apps/web/src/components/settings-sidebar/index.vue

@@ -1,6 +1,14 @@
 <template>
-  <aside>
-    <Sidebar collapsible="icon">
+  <aside class="relative h-full">
+    <header
+      v-if="topInset"
+      class="fixed top-0 left-0 z-20 h-9 w-(--sidebar-width) bg-sidebar border-r border-sidebar-border [-webkit-app-region:drag]"
+    />
+
+    <Sidebar
+      :collapsible="topInset ? 'none' : 'icon'"
+      :class="topInset ? 'pt-9 h-dvh border-r border-sidebar-border' : ''"
+    >
       <SidebarHeader
         v-if="!hideHeader"
         class="p-0 border-0"
@@ -45,13 +53,13 @@
         </SidebarGroup>
       </SidebarContent>
 
-      <SidebarRail />
+      <SidebarRail v-if="!topInset" />
     </Sidebar>
   </aside>
 </template>
 
 <script setup lang="ts">
-import { computed, type Component } from 'vue'
+import { computed, inject, type Component } from 'vue'
 import { storeToRefs } from 'pinia'
 import { useRouter, useRoute } from 'vue-router'
 import { useI18n } from 'vue-i18n'
@@ -68,6 +76,7 @@ import {
   SidebarMenuItem,
   SidebarRail,
 } from '@memohai/ui'
+import { DesktopShellKey } from '@/lib/desktop-shell'
 
 withDefaults(defineProps<{
   // When true, the back-to-chat button in the sidebar header is hidden.
@@ -78,6 +87,8 @@ withDefaults(defineProps<{
   hideHeader: false,
 })
 
+const topInset = inject(DesktopShellKey, false)
+
 const router = useRouter()
 const route = useRoute()
 const { t } = useI18n()

apps/web/src/components/sidebar/index.vue

@@ -1,7 +1,30 @@
 <template>
-  <aside>
-    <Sidebar collapsible="icon">
-      <SidebarHeader class="p-0 border-0">
+  <aside class="relative h-full">
+    <header
+      v-if="topInset"
+      class="fixed top-0 left-0 z-20 h-9 w-(--sidebar-width) flex items-center pl-[78px] pr-2 gap-1 bg-sidebar border-r border-sidebar-border [-webkit-app-region:drag]"
+    >
+      <div class="ml-auto flex items-center gap-1 [-webkit-app-region:no-drag]">
+        <Button
+          variant="ghost"
+          size="icon"
+          class="size-6 text-muted-foreground hover:text-foreground shrink-0"
+          :aria-label="t('bots.createBot')"
+          @click="router.push('/settings/bots')"
+        >
+          <Plus class="size-3.5" />
+        </Button>
+      </div>
+    </header>
+
+    <Sidebar
+      :collapsible="topInset ? 'none' : 'icon'"
+      :class="topInset ? 'pt-9 h-dvh border-r border-sidebar-border' : ''"
+    >
+      <SidebarHeader
+        v-if="!topInset"
+        class="p-0 border-0"
+      >
         <div class="h-10 flex items-center pl-2 group-data-[collapsible=icon]:pl-3 transition-[padding] duration-200 ease-linear">
           <Button
             variant="ghost"
@@ -58,33 +81,9 @@
         </SidebarGroup>
       </SidebarContent>
 
-      <SidebarRail />
-
       <SidebarFooter class="relative border-0 px-2 pb-3.5 pt-2.5">
         <div class="pointer-events-none absolute -top-30 left-0 h-38.25 w-full bg-linear-to-t from-(--sidebar-background) from-18% to-transparent z-10 group-data-[collapsible=icon]:hidden" />
         <SidebarMenu class="gap-2.5">
-          <!-- <SidebarMenuItem>
-            <SidebarMenuButton
-              :tooltip="displayTitle"
-              class="h-10 px-2.5"
-              @click="router.push({ name: 'profile' })"
-            >
-              <div class="size-9 shrink-0 rounded-full border border-border bg-accent overflow-hidden p-[1.385px]">
-                <img
-                  v-if="userInfo.avatarUrl"
-                  :src="userInfo.avatarUrl"
-                  :alt="displayTitle"
-                  class="size-full rounded-full object-cover"
-                >
-                <span
-                  v-else
-                  class="size-full flex items-center justify-center text-[10px] font-medium text-muted-foreground"
-                >
-                  {{ avatarFallback }}
-                </span>
-              </div>
-            </SidebarMenuButton>
-          </SidebarMenuItem> -->
           <SidebarMenuItem>
             <SidebarMenuButton
               :tooltip="t('sidebar.settings')"
@@ -100,19 +99,19 @@
           </SidebarMenuItem>
         </SidebarMenu>
       </SidebarFooter>
+
+      <SidebarRail v-if="!topInset" />
     </Sidebar>
   </aside>
 </template>
 
 <script setup lang="ts">
-import { computed } from 'vue'
+import { computed, inject } from 'vue'
 import { useRouter, useRoute } from 'vue-router'
 import { useI18n } from 'vue-i18n'
 import { useQuery } from '@pinia/colada'
 import { getBotsQuery } from '@memohai/sdk/colada'
 import type { BotsBot } from '@memohai/sdk'
-// import { useUserStore } from '@/store/user'
-// import { useAvatarInitials } from '@/composables/useAvatarInitials'
 import {
   Button,
   Sidebar,
@@ -130,21 +129,17 @@ import {
 import { Plus, LoaderCircle, Settings, PanelLeftClose, PanelLeftOpen } from 'lucide-vue-next'
 import BotItem from './bot-item.vue'
 import { usePinnedBots } from '@/composables/usePinnedBots'
+import { DesktopShellKey } from '@/lib/desktop-shell'
 
 const router = useRouter()
 const route = useRoute()
 const { t } = useI18n()
 const { toggleSidebar } = useSidebar()
-// const { userInfo } = useUserStore()
+const topInset = inject(DesktopShellKey, false)
 const { sortBots } = usePinnedBots()
 
 const { data: botData, isLoading } = useQuery(getBotsQuery())
 const bots = computed<BotsBot[]>(() => sortBots(botData.value?.items ?? []))
 
 const isSettingsActive = computed(() => route.path.startsWith('/settings'))
-
-// const displayTitle = computed(() =>
-//   userInfo.displayName || userInfo.username || userInfo.id || t('settings.user'),
-// )
-// const avatarFallback = useAvatarInitials(() => displayTitle.value, 'U')
 </script>

apps/web/src/layout/main-layout/index.vue

@@ -16,16 +16,23 @@
   </section>
 </template>
 <script setup lang="ts">
-import { ref, watch } from 'vue'
+import { ref, watch, inject } from 'vue'
 import { SidebarProvider } from '@memohai/ui'
 import { useMediaQuery } from '@vueuse/core'
+import { DesktopShellKey } from '@/lib/desktop-shell'
 
-const sidebarDefaultOpen = !document.cookie.includes('sidebar_state=false')
+// In the desktop shell the sidebar collapse affordance is intentionally
+// disabled — we keep the sidebar pinned open and skip the small-screen
+// auto-collapse watcher so window resizes don't fight the layout.
+const desktopShell = inject(DesktopShellKey, false)
+
+const sidebarDefaultOpen = desktopShell || !document.cookie.includes('sidebar_state=false')
 const isOpen = ref(sidebarDefaultOpen)
 
 const isSmallScreen = useMediaQuery('(max-width: 1024px)')
 
 watch(isSmallScreen, (isSmall) => {
+  if (desktopShell) return
   if (isSmall) {
     isOpen.value = false
   } else {

apps/web/src/lib/desktop-shell.ts

@@ -0,0 +1,6 @@
+import type { InjectionKey } from 'vue'
+
+// Provided by the Electron desktop shell to enable a macOS-style top inset
+// (traffic-light reserve + custom TopBar) inside reusable web sidebars.
+// Web (browser) does not provide this key, so consumers fall back to false.
+export const DesktopShellKey: InjectionKey<boolean> = Symbol('memohai:desktop-shell')

apps/web/src/pages/home/components/chat-area.vue

@@ -1,6 +1,21 @@
 <template>
   <div class="flex-1 flex h-full min-w-0">
-    <div class="flex-1 flex flex-col h-full min-w-0">
+    <div class="flex-1 flex flex-col h-full min-w-0 relative">
+      <!-- Desktop floating title bar (overlays the chat area, fades into messages
+           via a bottom shadow gradient — pointer-events:none lets scroll/clicks
+           fall through). -->
+      <header
+        v-if="topInset && currentBotId"
+        class="pointer-events-none absolute top-0 left-0 right-0 z-10 select-none"
+      >
+        <div class="h-10 flex items-center justify-center bg-background px-12">
+          <span class="text-xs font-medium text-foreground truncate">
+            {{ desktopTitle }}
+          </span>
+        </div>
+        <div class="h-5 bg-linear-to-b from-background to-transparent" />
+      </header>
+
       <!-- No bot selected -->
       <div
         v-if="!currentBotId"
@@ -24,7 +39,10 @@
               ref="scrollContainer"
               class="h-full"
             >
-              <div class="w-full max-w-4xl mx-auto px-10 py-6 space-y-6">
+              <div
+                class="w-full max-w-4xl mx-auto px-10 pb-6 space-y-6"
+                :class="topInset ? 'pt-15' : 'pt-6'"
+              >
                 <!-- Load older indicator -->
                 <div
                   v-if="loadingOlder"
@@ -380,7 +398,7 @@
 </template>
 
 <script setup lang="ts">
-import { ref, computed, nextTick, onMounted, onBeforeUnmount, provide, useTemplateRef, watchEffect, watch, type Component } from 'vue'
+import { ref, computed, inject, nextTick, onMounted, onBeforeUnmount, provide, useTemplateRef, watchEffect, watch, type Component } from 'vue'
 import { useLocalStorage } from '@vueuse/core'
 import { LoaderCircle, Image as ImageIcon, File as FileIcon, X, Paperclip, FolderOpen, Send, ChevronDown, Lightbulb, TerminalSquare, BarChart3, Trash2 } from 'lucide-vue-next'
 import { ScrollArea, Button, InputGroup, InputGroupAddon, InputGroupTextarea, Popover, PopoverContent, PopoverTrigger, Dialog, DialogContent, DialogHeader, DialogTitle, DialogDescription, DialogFooter } from '@memohai/ui'
@@ -397,6 +415,7 @@ import { EFFORT_LABELS, EFFORT_OPACITY } from '@/pages/bots/components/reasoning
 import { useMediaGallery } from '../composables/useMediaGallery'
 import { openInFileManagerKey } from '../composables/useFileManagerProvider'
 import type { ChatAttachment } from '@/composables/api/useChat'
+import { DesktopShellKey } from '@/lib/desktop-shell'
 import { useScroll, useElementBounding } from '@vueuse/core'
 import { useQuery } from '@pinia/colada'
 import { getModels, getProviders, getBotsByBotIdSettings } from '@memohai/sdk'
@@ -544,8 +563,19 @@ const {
   hasMoreOlder,
   overrideModelId,
   overrideReasoningEffort,
+  bots,
 } = storeToRefs(chatStore)
 
+const topInset = inject(DesktopShellKey, false)
+
+const desktopTitle = computed(() => {
+  const sessionTitle = (activeSession.value?.title ?? '').trim()
+  const bot = bots.value.find((b) => b.id === currentBotId.value)
+  const botName = (bot?.display_name ?? bot?.id ?? '').trim()
+  if (sessionTitle && botName) return `${sessionTitle} - ${botName}`
+  return sessionTitle || botName
+})
+
 // ---- Model / provider queries ----
 
 const { data: modelData } = useQuery({