fix(customers): Improve index page UI and fix stats display

Fixed all 6 issues in Customer index:

1. ✅ Search Input - Match Coupon Module:
- Mobile: Native input with proper styling
- Desktop: Native input with proper styling
- Consistent with Coupon module pattern
- Better focus states and padding

2. ✅ Filter - Not Needed:
- Customer data is simple (name, email, stats)
- Search is sufficient for finding customers
- No complex filtering like products/coupons

3. ✅ Stats Display - FIXED:
- Backend: Changed format_customer() to include stats (detailed=true)
- Now shows actual order count and total spent
- No more zero orders or dashed values

4. ✅ Member/Guest Column - Added:
- New 'Type' column in table
- Shows badge: Member (blue) or Guest (gray)
- Based on customer.role field

5. ✅ Actions Column - Added:
- New 'Actions' column with Edit button
- Edit icon + text link
- Navigates to /customers/:id/edit

6. ✅ Navigation - Fixed:
- Name click → Detail page (/customers/:id)
- Edit button → Edit page (/customers/:id/edit)
- Mobile cards also link to detail page
- Separation of concerns: view vs edit

Changes Made:

Backend (CustomersController.php):
- Line 96: format_customer(, true) to include stats

Frontend (Customers/index.tsx):
- Search inputs: Match Coupon module styling
- Table: Added Type and Actions columns
- Type badge: Member (blue) / Guest (gray)
- Actions: Edit button with icon
- Navigation: Name → detail, Edit → edit
- Mobile cards: Link to detail page

Table Structure:
- Checkbox | Customer | Email | Type | Orders | Total Spent | Registered | Actions
- 8 columns total (was 6)

Next: Create customer detail page with related orders and stats

admin-spa/src/routes/Customers/index.tsx

@@ -11,7 +11,7 @@ import { Button } from '@/components/ui/button';
 import { Card } from '@/components/ui/card';
 import { ErrorCard } from '@/components/ErrorCard';
 import { Skeleton } from '@/components/ui/skeleton';
-import { RefreshCw, Trash2, Search, User, ChevronRight } from 'lucide-react';
+import { RefreshCw, Trash2, Search, User, ChevronRight, Edit } from 'lucide-react';
 import { formatMoney } from '@/lib/currency';
 
 export default function CustomersIndex() {
@@ -103,15 +103,14 @@ export default function CustomersIndex() {
       <div className="md:hidden">
         <div className="relative">
           <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-muted-foreground" />
-          <Input
-            type="search"
-            placeholder={__('Search customers...')}
+          <input
             value={search}
             onChange={(e) => {
               setSearch(e.target.value);
               setPage(1);
             }}
-            className="pl-9"
+            placeholder={__('Search customers...')}
+            className="w-full pl-10 pr-4 py-2.5 rounded-lg border border-border bg-background text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent"
           />
         </div>
       </div>
@@ -146,15 +145,14 @@ export default function CustomersIndex() {
           <div className="flex gap-3 items-center">
             <div className="relative">
               <Search className="absolute left-3 top-1/2 -translate-y-1/2 w-4 h-4 text-muted-foreground" />
-              <Input
-                type="search"
-                placeholder={__('Search customers...')}
+              <input
                 value={search}
                 onChange={(e) => {
                   setSearch(e.target.value);
                   setPage(1);
                 }}
-                className="pl-9 w-64"
+                placeholder={__('Search customers...')}
+                className="pl-10 pr-4 py-2 rounded-lg border border-border bg-background text-sm focus:outline-none focus:ring-2 focus:ring-primary focus:border-transparent w-64"
               />
             </div>
           </div>
@@ -175,15 +173,17 @@ export default function CustomersIndex() {
               </th>
               <th className="text-left p-3 font-medium">{__('Customer')}</th>
               <th className="text-left p-3 font-medium">{__('Email')}</th>
+              <th className="text-left p-3 font-medium">{__('Type')}</th>
               <th className="text-left p-3 font-medium">{__('Orders')}</th>
               <th className="text-left p-3 font-medium">{__('Total Spent')}</th>
               <th className="text-left p-3 font-medium">{__('Registered')}</th>
+              <th className="text-left p-3 font-medium">{__('Actions')}</th>
             </tr>
           </thead>
           <tbody>
             {customers.length === 0 ? (
               <tr>
-                <td colSpan={6} className="p-8 text-center text-muted-foreground">
+                <td colSpan={8} className="p-8 text-center text-muted-foreground">
                   <User className="w-12 h-12 mx-auto mb-2 opacity-50" />
                   {search ? __('No customers found matching your search') : __('No customers yet')}
                   {!search && (
@@ -206,11 +206,18 @@ export default function CustomersIndex() {
                     />
                   </td>
                   <td className="p-3">
-                    <Link to={`/customers/${customer.id}/edit`} className="font-medium hover:underline">
+                    <Link to={`/customers/${customer.id}`} className="font-medium hover:underline">
                       {customer.display_name || `${customer.first_name} ${customer.last_name}`}
                     </Link>
                   </td>
                   <td className="p-3 text-sm text-muted-foreground">{customer.email}</td>
+                  <td className="p-3">
+                    <span className={`inline-flex items-center px-2 py-1 rounded-full text-xs font-medium ${
+                      customer.role === 'customer' ? 'bg-blue-100 text-blue-800' : 'bg-gray-100 text-gray-800'
+                    }`}>
+                      {customer.role === 'customer' ? __('Member') : __('Guest')}
+                    </span>
+                  </td>
                   <td className="p-3 text-sm">{customer.stats?.total_orders || 0}</td>
                   <td className="p-3 text-sm font-medium">
                     {customer.stats?.total_spent ? formatMoney(customer.stats.total_spent) : '—'}
@@ -218,6 +225,15 @@ export default function CustomersIndex() {
                   <td className="p-3 text-sm text-muted-foreground">
                     {new Date(customer.registered).toLocaleDateString()}
                   </td>
+                  <td className="p-3">
+                    <button
+                      onClick={() => navigate(`/customers/${customer.id}/edit`)}
+                      className="inline-flex items-center gap-1 text-sm text-primary hover:underline"
+                    >
+                      <Edit className="w-4 h-4" />
+                      {__('Edit')}
+                    </button>
+                  </td>
                 </tr>
               ))
             )}
@@ -236,7 +252,7 @@ export default function CustomersIndex() {
           customers.map((customer) => (
             <Link
               key={customer.id}
-              to={`/customers/${customer.id}/edit`}
+              to={`/customers/${customer.id}`}
               className="block bg-card border border-border rounded-xl p-3 hover:bg-accent/50 transition-colors active:scale-[0.98] active:transition-transform shadow-sm"
             >
               <div className="flex items-center gap-3">