feat(layout): login, uygulama kabuğu, alt menü, hızlı ekle ve dashboard

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/app/(app)/layout.tsx

@@ -0,0 +1,29 @@
+import { AppHeader } from "@/components/layout/app-header";
+import { AppSidebar } from "@/components/layout/app-sidebar";
+import { BottomNav } from "@/components/layout/bottom-nav";
+import { QuickAddProvider } from "@/components/layout/quick-add";
+import { SidebarInset, SidebarProvider } from "@/components/ui/sidebar";
+import { MOCK_SESSION_USER } from "@/features/auth/mock";
+import { MOCK_HOUSEHOLDS } from "@/features/households/mock";
+import { APP_VERSION } from "@/lib/version";
+
+/**
+ * Oturum gerektiren alan: yan menü (masaüstü), üst bar, alt menü (mobil), hızlı ekle.
+ * FAZ 3: `const session = await requireSession()` — oturum yoksa /login.
+ */
+export default function AppLayout({ children }: { children: React.ReactNode }) {
+  const user = MOCK_SESSION_USER;
+  return (
+    <SidebarProvider>
+      <QuickAddProvider>
+        <AppSidebar isAdmin={user.role === "admin"} version={APP_VERSION} />
+        <SidebarInset>
+          <AppHeader user={user} households={MOCK_HOUSEHOLDS} version={APP_VERSION} />
+          {/* Mobilde alt menü yüksekliği kadar boşluk */}
+          <div className="flex flex-1 flex-col gap-4 p-4 pb-24 md:p-6 md:pb-6">{children}</div>
+        </SidebarInset>
+        <BottomNav />
+      </QuickAddProvider>
+    </SidebarProvider>
+  );
+}