feat(web): Schedule-First redesign

- Top header bar + narrow sidebar layout
- Dashboard: calendar-style schedule with timeline cards
- Clients: card-based layout with avatar initials and pet count
- Services: grid cards with emoji indicators and pricing
- Bookings: timeline cards with time slots, status chips, inline actions
- Invoices: cards with status badges, action buttons
- All pages: search bars, empty states, modal forms
- Consistent color system: indigo primary, amber alerts, gray hierarchy

web/package.json

@@ -18,7 +18,8 @@
     "@types/react-router-dom": "^5.3.3",
     "tailwindcss": "^3.4.10",
     "postcss": "^8.4.40",
-    "autoprefixer": "^10.4.20"
+    "autoprefixer": "^10.4.20",
+    "typescript": "^5.6.0"
   },
   "scripts": {
     "start": "react-scripts start",