feat(ui): единый PageHeader h1 на всех разделах

Заголовок раздела над KPI/контентом; FrameTitle text-sm больше не заменяет page-level h1.

Co-authored-by: Cursor <[email protected]>

apps/web/src/components/reui-kit/settings-shell.tsx

@@ -5,6 +5,7 @@ import { SettingsIcon } from 'lucide-react'
 import { useIsMobile } from '@cfdm/ui/hooks/use-mobile'
 import { cn } from '@cfdm/ui/lib/utils'
 import { PageShell } from '@/components/page-shell'
+import { PageHeader } from '@/components/page-header'
 import { Separator } from '@cfdm/ui/components/separator'
 
 export interface SettingsTabConfig {
@@ -40,15 +41,10 @@ export function SettingsShell({
   return (
     <PageShell>
       <div className="mx-auto flex w-full max-w-4xl flex-col gap-5">
-        <header className="flex flex-col gap-3 px-1">
-          <div className="flex flex-col gap-px">
-            <h1 className="text-2xl font-semibold tracking-tight">{title}</h1>
-            <p className="text-muted-foreground max-w-2xl text-sm leading-relaxed">
-              {description}
-            </p>
-          </div>
+        <div className="flex flex-col gap-3">
+          <PageHeader title={title} description={description} />
           <Separator />
-        </header>
+        </div>
 
         <div
           className={cn(