refactor: update dashboard quick links and app shell for improved layout and functionality

Refactored the DashboardQuickLinks component to simplify icon classes for better semantic clarity. Updated the AppShell component to integrate the AppSwitcher and AppsMenu, enhancing navigation and user experience. Adjusted the layout of the app shell header and main content for improved consistency and alignment. Updated UI design documentation to reflect these changes and ensure adherence to shared design standards.

apps/web/src/components/layout/command-palette.tsx

@@ -29,9 +29,11 @@ export type CommandPaletteItem = {
 interface CommandPaletteProps {
   items: CommandPaletteItem[]
   className?: string
+  /** Hotkey-only: no sidebar search trigger (chrome parity with CFDM). */
+  hotkeyOnly?: boolean
 }
 
-export function CommandPalette({ items }: CommandPaletteProps) {
+export function CommandPalette({ items, hotkeyOnly = false }: CommandPaletteProps) {
   const [open, setOpen] = useState(false)
   const [query, setQuery] = useState('')
   const searchInputId = useId()
@@ -68,25 +70,27 @@ export function CommandPalette({ items }: CommandPaletteProps) {
 
   return (
     <>
-      <SidebarGroup className="p-0">
-        <SidebarGroupContent className="relative">
-          <Button
-            type="button"
-            variant="outline"
-            className="hover:bg-background h-8 w-full justify-start pl-7 font-normal transition-[width] duration-200 ease-linear in-data-[state=collapsed]:w-8! in-data-[state=collapsed]:pl-4! in-data-[state=collapsed]:text-transparent"
-            onClick={() => setOpen(true)}
-          >
-            Поиск…
-          </Button>
-          <Search
-            aria-hidden
-            className="pointer-events-none absolute top-1/2 left-2 size-3.5 -translate-y-1/2 opacity-50 select-none"
-          />
-          <Kbd className="absolute top-1/2 right-2 -translate-y-1/2 in-data-[state=collapsed]:hidden">
-            ⌘K
-          </Kbd>
-        </SidebarGroupContent>
-      </SidebarGroup>
+      {!hotkeyOnly ? (
+        <SidebarGroup className="p-0">
+          <SidebarGroupContent className="relative">
+            <Button
+              type="button"
+              variant="outline"
+              className="hover:bg-background h-8 w-full justify-start pl-7 font-normal transition-[width] duration-200 ease-linear in-data-[state=collapsed]:w-8! in-data-[state=collapsed]:pl-4! in-data-[state=collapsed]:text-transparent"
+              onClick={() => setOpen(true)}
+            >
+              Поиск…
+            </Button>
+            <Search
+              aria-hidden
+              className="pointer-events-none absolute top-1/2 left-2 size-3.5 -translate-y-1/2 opacity-50 select-none"
+            />
+            <Kbd className="absolute top-1/2 right-2 -translate-y-1/2 in-data-[state=collapsed]:hidden">
+              ⌘K
+            </Kbd>
+          </SidebarGroupContent>
+        </SidebarGroup>
+      ) : null}
 
       <Dialog
         open={open}