feat: implement PWA support with manifest and icons and add mobile-optimized bottom navigation

public/icon-192x192.svg

@@ -0,0 +1 @@
+<svg width="192" height="192" xmlns="http://www.w3.org/2000/svg"><rect width="100%" height="100%" fill="#2563eb"/><text x="50%" y="50%" fill="white" font-size="100" font-family="sans-serif" text-anchor="middle" dominant-baseline="middle">J</text></svg>

public/icon-512x512.svg

@@ -0,0 +1 @@
+<svg width="512" height="512" xmlns="http://www.w3.org/2000/svg"><rect width="100%" height="100%" fill="#2563eb"/><text x="50%" y="50%" fill="white" font-size="100" font-family="sans-serif" text-anchor="middle" dominant-baseline="middle">J</text></svg>

public/manifest.json

@@ -0,0 +1,21 @@
+{
+  "name": "JAIBEN Mobility",
+  "short_name": "JAIBEN",
+  "description": "EV Rental Platform",
+  "start_url": "/",
+  "display": "standalone",
+  "background_color": "#ffffff",
+  "theme_color": "#2563eb",
+  "icons": [
+    {
+      "src": "/icon-192x192.svg",
+      "sizes": "192x192",
+      "type": "image/svg+xml"
+    },
+    {
+      "src": "/icon-512x512.svg",
+      "sizes": "512x512",
+      "type": "image/svg+xml"
+    }
+  ]
+}