Initial commit — Grow baby tracker

Next.js 16 App Router, Prisma + PostgreSQL, NextAuth v5 JWT.

Features: dashboard quick-log, timeline, growth charts (WHO percentiles),
stats, journal/notes, doctor notes, milestones, vaccinations, settings,
superadmin panel. Mobile-first with sidebar nav + bottom nav + quick-add FAB.
Dark mode, PWA push notifications, multi-family invite system.

Docker: multi-stage Dockerfile + docker-compose with postgres service.

src/app/(app)/layout.tsx

@@ -0,0 +1,23 @@
+import { auth } from "@/lib/auth";
+import { redirect } from "next/navigation";
+import { SidebarNav, BottomNav } from "@/components/nav";
+import { BabyProvider } from "@/contexts/baby-context";
+import { QuickAddFab } from "@/components/quick-add-fab";
+
+export default async function AppLayout({ children }: { children: React.ReactNode }) {
+  const session = await auth();
+  if (!session?.user) redirect("/auth/login");
+
+  return (
+    <BabyProvider>
+      <div className="min-h-screen bg-slate-50 dark:bg-slate-900">
+        <SidebarNav />
+        <main className="app-main min-h-screen">
+          {children}
+        </main>
+        <BottomNav />
+        <QuickAddFab />
+      </div>
+    </BabyProvider>
+  );
+}