feat: Move customer registration to site-level setting

Moved 'Register as site member' from order-level to site-level setting

Frontend Changes:
1. Customer Settings - Added new General section
   - Auto-register customers as site members toggle
   - Clear description of functionality
   - Saved to backend via existing API

2. OrderForm - Removed checkbox
   - Removed registerAsMember state
   - Removed checkbox UI
   - Removed register_as_member from payload
   - Backend now uses site setting

Backend Changes:
1. CustomerSettingsProvider.php
   - Added auto_register_members setting
   - Default: false (no)
   - Stored as woonoow_auto_register_members option
   - Included in get_settings()
   - Handled in update_settings()

2. OrdersController.php
   - Removed register_as_member parameter
   - Now reads from CustomerSettingsProvider
   - Site-level setting applies to all orders
   - Consistent behavior across all order creation

Benefits:
✅ Site-level control (not per-order)
✅ Consistent customer experience
✅ Easier to manage (one setting)
✅ No UI clutter in order form
✅ Setting persists across all orders

Migration:
- Old orders with checkbox: No impact
- New orders: Use site setting
- Default: Disabled (safe default)

Result:
Admins can now control customer registration site-wide from Customer Settings instead of per-order checkbox

admin-spa/src/routes/Orders/partials/OrderForm.tsx

@@ -181,7 +181,6 @@ export default function OrderForm({
   const [paymentMethod, setPaymentMethod] = React.useState(initial?.payment_method_id || initial?.payment_method || '');
   const [shippingMethod, setShippingMethod] = React.useState(initial?.shipping_method_id || initial?.shipping_method || '');
   const [note, setNote] = React.useState(initial?.customer_note || '');
-  const [registerAsMember, setRegisterAsMember] = React.useState(false);
   const [selectedCustomerId, setSelectedCustomerId] = React.useState<number | null>(null);
   const [submitting, setSubmitting] = React.useState(false);
 
@@ -452,7 +451,6 @@ export default function OrderForm({
       payment_method: paymentMethod || undefined,
       shipping_method: shippingMethod || undefined,
       customer_note: note || undefined,
-      register_as_member: registerAsMember,
       items: itemsEditable ? items : undefined,
       coupons: showCoupons ? validatedCoupons.map(c => c.code) : undefined,
     };
@@ -1047,9 +1045,8 @@ export default function OrderForm({
                         }
                       }
                       
-                      // Mark customer as selected (hide register checkbox)
+                      // Mark customer as selected
                       setSelectedCustomerId(data.user_id);
-                      setRegisterAsMember(false);
                     }
                   } catch (e) {
                     console.error('Customer autofill error:', e);
@@ -1287,27 +1284,6 @@ export default function OrderForm({
             <Textarea value={note} onChange={e=>setNote(e.target.value)} placeholder={__('Write a note for this order…')} />
           </div>
 
-          {/* Register as member checkbox (only for new orders and when no existing customer selected) */}
-          {mode === 'create' && !selectedCustomerId && (
-            <div className="rounded border p-4">
-              <div className="flex items-start gap-2">
-                <Checkbox 
-                  id="register_member" 
-                  checked={registerAsMember}
-                  onCheckedChange={(v) => setRegisterAsMember(Boolean(v))}
-                />
-                <div className="flex-1">
-                  <Label htmlFor="register_member" className="cursor-pointer">
-                    {__('Register customer as site member')}
-                  </Label>
-                  <p className="text-xs text-muted-foreground mt-1">
-                    {__('Customer will receive login credentials via email and can track their orders.')}
-                  </p>
-                </div>
-              </div>
-            </div>
-          )}
-
           {!hideSubmitButton && (
             <Button type="submit" disabled={submitting} className="w-full">
               {submitting ? (mode === 'edit' ? __('Saving…') : __('Creating…')) : (mode === 'edit' ? __('Save changes') : __('Create order'))}

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

@@ -11,6 +11,7 @@ import { Select, SelectContent, SelectItem, SelectTrigger, SelectValue } from '@
 import { formatMoney, getStoreCurrency } from '@/lib/currency';
 
 interface CustomerSettings {
+  auto_register_members: boolean;
   vip_min_spent: number;
   vip_min_orders: number;
   vip_timeframe: 'all' | '30' | '90' | '365';
@@ -20,6 +21,7 @@ interface CustomerSettings {
 
 export default function CustomersSettings() {
   const [settings, setSettings] = useState<CustomerSettings>({
+    auto_register_members: false,
     vip_min_spent: 1000,
     vip_min_orders: 10,
     vip_timeframe: 'all',
@@ -113,6 +115,19 @@ export default function CustomersSettings() {
         </div>
       )}
 
+      <SettingsCard
+        title={__('General')}
+        description={__('General customer settings')}
+      >
+        <ToggleField
+          id="auto_register_members"
+          label={__('Auto-register customers as site members')}
+          description={__('Automatically create WordPress user accounts for new customers when orders are created. Customers will receive login credentials via email and can track their orders.')}
+          checked={settings.auto_register_members}
+          onCheckedChange={(checked) => setSettings({ ...settings, auto_register_members: checked })}
+        />
+      </SettingsCard>
+
       <SettingsCard
         title={__('VIP Customer Qualification')}
         description={__('Define criteria for identifying VIP customers')}

includes/Api/OrdersController.php

@@ -780,7 +780,10 @@ class OrdersController {
     $shipping_method = sanitize_text_field( $p['shipping_method'] ?? '' ); // e.g. flat_rate:1
     $coupons         = array_filter( array_map( 'sanitize_text_field', (array) ( $p['coupons'] ?? [] ) ) );
     $note            = isset( $p['customer_note'] ) ? wp_kses_post( (string) $p['customer_note'] ) : '';
-    $register_member = (bool) ( $p['register_as_member'] ?? false );
+    
+    // Get auto-register setting from customer settings (site-level)
+    $customer_settings = \WooNooW\Compat\CustomerSettingsProvider::get_settings();
+    $register_member = $customer_settings['auto_register_members'] ?? false;
 
     // Validation: Collect all missing required fields
     $validation_errors = [];

includes/Compat/CustomerSettingsProvider.php

@@ -18,6 +18,9 @@ class CustomerSettingsProvider {
 	 */
 	public static function get_settings() {
 		return [
+			// General
+			'auto_register_members' => get_option('woonoow_auto_register_members', 'no') === 'yes',
+			
 			// VIP Customer Qualification
 			'vip_min_spent' => floatval(get_option('woonoow_vip_min_spent', 1000)),
 			'vip_min_orders' => intval(get_option('woonoow_vip_min_orders', 10)),
@@ -36,6 +39,11 @@ class CustomerSettingsProvider {
 	public static function update_settings($settings) {
 		$updated = true;
 		
+		// General settings
+		if (isset($settings['auto_register_members'])) {
+			$updated = $updated && update_option('woonoow_auto_register_members', $settings['auto_register_members'] ? 'yes' : 'no');
+		}
+		
 		// VIP settings
 		if (isset($settings['vip_min_spent'])) {
 			$updated = $updated && update_option('woonoow_vip_min_spent', floatval($settings['vip_min_spent']));