Redesign orders/cart/search flows and fix RTL/auth edge cases in user-app

- Fix silent redirect-to-home for unauthenticated users on protected routes;
  now redirects to login with a return path
- Restyle OrderCard, SearchInput, Filters, DropDown, and product card image
  sizing/centering to match the app's LESS-token design language
- Fix ant-design Slider handle placement/drag under RTL and seed a valid
  default range so handles actually render
- Fix chip-row edge padding and top spacing across Orders/Cart/Search lists
- Add pull-to-refresh to the dashboard and fix its header/padding to match
  the fixed PageBar pattern
- Remove the floating WhatsApp button from index.html

apps/user-app/index.html

@@ -9,45 +9,10 @@
     <meta name="background-color" content="#1C2D56" />
     <meta content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" name="viewport" />
     <title>طلای هنزا</title>
-    <style>
-      #whatsapp-button {
-        position: fixed;
-        bottom: 90px;
-        right: 20px;
-        width: 60px;
-        height: 60px;
-        padding: 8px;
-        box-sizing: border-box;
-        background-color: #ffffff;
-        border-radius: 50%;
-        display: flex;
-        justify-content: center;
-        align-items: center;
-        overflow: hidden;
-        cursor: pointer;
-        transition: transform 0.2s ease, box-shadow 0.2s ease;
-        z-index: 1000000000;
-      }
-
-      #whatsapp-button img {
-        width: 100%;
-        height: 100%;
-        object-fit: contain;
-        display: block;
-      }
-
-      #whatsapp-button:hover {
-        transform: scale(1.1);
-        box-shadow: 0 6px 14px rgba(0, 0, 0, 0.3);
-      }
-    </style>
   </head>
   <body style="background-color: #1C2D56">
     <div class="bg-white w-screen h-screen fixed"></div>
     <div id="app"></div>
     <script type="module" src="/src/main.ts"></script>
-    <a href="https://wa.me/989229425856" target="_blank" id="whatsapp-button" aria-label="پشتیبانی واتساپ">
-      <img src="/whatsapp.png" alt="پشتیبانی واتساپ" width="44" height="44" />
-    </a>
   </body>
 </html>