feat(finder): AI-powered cafe finder PWA with Next.js 16

Public cafe discovery app:
- SEO-optimised pages: home, /cafe/[slug], /search, /city/[city]
- AI search bar with natural language queries
- Structured data (JSON-LD) for Google rich results
- City browsing, rating/filter sidebar, similar cafes
- Review listing, full menu preview, working-hours card
- Web App Manifest + offline fallback page (PWA)
- Next.js 16: params/searchParams typed as Promise<{}>
- Fix Lucide icon title→aria-label (type removed upstream)
- "use client" on offline page (onClick handler)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

web/finder/next.config.ts

@@ -0,0 +1,55 @@
+import type { NextConfig } from "next";
+import createNextIntlPlugin from "next-intl/plugin";
+import withPWAInit from "@ducanh2912/next-pwa";
+
+const withNextIntl = createNextIntlPlugin("./src/i18n/request.ts");
+
+const withPWA = withPWAInit({
+  dest: "public",
+  cacheOnFrontEndNav: true,
+  aggressiveFrontEndNavCaching: true,
+  reloadOnOnline: true,
+  disable: process.env.NODE_ENV === "development",
+  workboxOptions: {
+    disableDevLogs: true,
+    runtimeCaching: [
+      {
+        urlPattern: /\/cafe\//,
+        handler: "StaleWhileRevalidate",
+        options: {
+          cacheName: "cafe-pages",
+          expiration: { maxEntries: 100, maxAgeSeconds: 7 * 24 * 60 * 60 },
+        },
+      },
+      {
+        urlPattern: /\/api\/public\//,
+        handler: "NetworkFirst",
+        options: {
+          cacheName: "api-cache",
+          networkTimeoutSeconds: 5,
+          expiration: { maxEntries: 200, maxAgeSeconds: 5 * 60 },
+        },
+      },
+      {
+        urlPattern: /\.(?:png|jpg|jpeg|svg|gif|webp|ico)$/,
+        handler: "CacheFirst",
+        options: {
+          cacheName: "image-cache",
+          expiration: { maxEntries: 200, maxAgeSeconds: 30 * 24 * 60 * 60 },
+        },
+      },
+    ],
+  },
+});
+
+const nextConfig: NextConfig = {
+  output: "standalone",
+  images: {
+    remotePatterns: [
+      { protocol: "https", hostname: "**" },
+      { protocol: "http", hostname: "**" },
+    ],
+  },
+};
+
+export default withPWA(withNextIntl(nextConfig));