feat(kiosk): add Android APK and PWA support

frontend/package-lock.json

@@ -23,6 +23,7 @@
                 "konva": "^9.3.6",
                 "lucide-react": "^0.556.0",
                 "qrcode": "^1.5.4",
+                "qrcode.react": "^4.2.0",
                 "react": "^18.2.0",
                 "react-dom": "^18.2.0",
                 "react-i18next": "^16.4.1",
@@ -6761,6 +6762,15 @@
                 "node": ">=10.13.0"
             }
         },
+        "node_modules/qrcode.react": {
+            "version": "4.2.0",
+            "resolved": "https://registry.npmjs.org/qrcode.react/-/qrcode.react-4.2.0.tgz",
+            "integrity": "sha512-QpgqWi8rD9DsS9EP3z7BT+5lY5SFhsqGjpgW5DY/i3mK4M9DTBNz3ErMi8BWYEfI3L0d8GIbGmcdFAS1uIRGjA==",
+            "license": "ISC",
+            "peerDependencies": {
+                "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+            }
+        },
         "node_modules/querystringify": {
             "version": "2.2.0",
             "resolved": "https://registry.npmjs.org/querystringify/-/querystringify-2.2.0.tgz",

frontend/public/.well-known/assetlinks.json

@@ -0,0 +1,14 @@
+[
+    {
+        "relation": [
+            "delegate_permission/common.handle_all_urls"
+        ],
+        "target": {
+            "namespace": "android_app",
+            "package_name": "run.runfoo.wolfpack.visitorkiosk",
+            "sha256_cert_fingerprints": [
+                "TODO_REPLACE_WITH_ACTUAL_SHA256_FINGERPRINT"
+            ]
+        }
+    }
+]

frontend/src/pages/VisitorKioskPage.tsx

@@ -1,6 +1,6 @@
 import { useState, useEffect, useRef } from 'react';
 import { QRCodeSVG as QRCode } from 'qrcode.react';
-import { User, Building, Clock, CheckCircle, XCircle, UserPlus, LogOut, Search, Shield, AlertTriangle, Camera, Trash2 } from 'lucide-react';
+import { User, Building, Clock, CheckCircle, XCircle, UserPlus, LogOut, Search, Shield, AlertTriangle, Camera, Trash2, Download } from 'lucide-react';
 import { visitorsApi, Visitor, ActiveVisitor } from '../lib/visitorsApi';
 
 type KioskMode = 'home' | 'new-visitor' | 'returning' | 'check-in' | 'check-out' | 'success';
@@ -581,8 +581,18 @@ export default function VisitorKioskPage() {
             </main>
 
             {/* Footer */}
-            <footer className="bg-slate-800/50 border-t border-white/10 p-4 text-center text-slate-500 text-sm">
+            <footer className="bg-slate-800/50 border-t border-white/10 p-4 text-center text-slate-500 text-sm flex flex-col md:flex-row justify-center items-center gap-4">
                 <p>By signing in, you agree to follow all facility rules and regulations.</p>
+                <div className="hidden md:block w-px h-4 bg-white/10" />
+                <a
+                    href="/visitorkiosk.apk"
+                    className="text-emerald-500/80 hover:text-emerald-400 font-medium transition-colors flex items-center gap-2 px-3 py-1 rounded-lg hover:bg-emerald-500/10"
+                    download
+                    title="Download the Android App"
+                >
+                    <Download size={14} />
+                    Download Kiosk App
+                </a>
             </footer>
         </div>
     );