Initial commit: DrinkTracker full-stack app

Next.js 14 drink collection tracker with AI-powered search,
menu scanning, ratings, wishlist, sharing, and CSV backup/restore.

Features:
- Auth (credentials + OAuth ready)
- Drink collection with ratings and reviews
- AI search via Claude/OpenAI with search history
- Menu photo scanning with AI extraction
- Wishlist / Try Later system
- Public sharing via slug URLs
- CSV backup and restore (merge/replace modes)
- Docker Compose for Postgres + MinIO + dev server

Security: docker-compose files use env var interpolation
instead of hardcoded secrets.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/layout/bottom-nav.tsx

@@ -0,0 +1,43 @@
+"use client"
+
+import Link from "next/link"
+import { usePathname } from "next/navigation"
+import { LayoutDashboard, Camera, Wine, Bookmark, Settings } from "lucide-react"
+import { cn } from "@/lib/utils"
+
+const navItems = [
+  { href: "/dashboard", label: "Home", icon: LayoutDashboard },
+  { href: "/scan", label: "Scan", icon: Camera },
+  { href: "/drinks", label: "Drinks", icon: Wine },
+  { href: "/wishlist", label: "Later", icon: Bookmark },
+  { href: "/settings", label: "Settings", icon: Settings },
+]
+
+export function BottomNav() {
+  const pathname = usePathname()
+
+  return (
+    <nav className="md:hidden fixed bottom-0 left-0 right-0 z-50 bg-card border-t safe-area-bottom">
+      <div className="flex items-center justify-around h-16">
+        {navItems.map((item) => {
+          const isActive = pathname.startsWith(item.href)
+          return (
+            <Link
+              key={item.href}
+              href={item.href}
+              className={cn(
+                "flex flex-col items-center gap-1 px-3 py-2 text-xs font-medium transition-colors min-w-[64px]",
+                isActive
+                  ? "text-primary"
+                  : "text-muted-foreground"
+              )}
+            >
+              <item.icon className="h-5 w-5" />
+              {item.label}
+            </Link>
+          )
+        })}
+      </div>
+    </nav>
+  )
+}