fix: Properly update gateway enabled property + add debug logging

🔍 Suspect #7: Gateway enabled property not being updated

Problem:
- We save to database ✅
- We reload settings ✅
- But $gateway->enabled property might not update!

Root Cause:
WooCommerce has TWO places for enabled status:
1. $gateway->settings['enabled'] (in database)
2. $gateway->enabled (instance property)

We were only updating #1, not #2!

The Fix:
// Update both places
$gateway->settings = $new_settings;  // Database
update_option($gateway->get_option_key(), $gateway->settings);

if (isset($new_settings['enabled'])) {
    $gateway->enabled = $new_settings['enabled'];  // Instance property!
}

Added Debug Logging:
- Log toggle request (gateway ID + enabled value)
- Log save process (current vs new enabled)
- Log update_option result
- Log final enabled value after fetch
- All logs prefixed with [WooNooW] for easy filtering

How to Debug:
1. Toggle a gateway
2. Check debug.log or error_log
3. Look for [WooNooW] lines
4. See exact values at each step

Files Modified:
- PaymentGatewaysProvider.php: Update both settings + enabled property
- PaymentsController.php: Add debug logging

Next Step:
Test toggle and check logs to see what's actually happening!

includes/Compat/PaymentGatewaysProvider.php

@@ -360,20 +360,29 @@ class PaymentGatewaysProvider {
         // Block external HTTP requests (analytics, tracking, etc.)
         add_filter('pre_http_request', '__return_true', 999);
         
-        // Merge with existing settings
-        $current_settings = get_option($gateway->get_option_key(), []);
+        // Get current settings and merge with new ones
+        $gateway->init_settings();
+        $current_settings = $gateway->settings;
         $new_settings = array_merge($current_settings, $settings);
         
-        // Use gateway's own validation if available
-        if (method_exists($gateway, 'validate_settings_fields')) {
-            $gateway->init_settings();
-            foreach ($new_settings as $key => $value) {
-                $gateway->settings[$key] = $value;
-            }
-            $gateway->process_admin_options();
-        } else {
-            // Direct save (faster)
-            update_option($gateway->get_option_key(), $new_settings, 'yes');
+        // Debug logging
+        error_log(sprintf('[WooNooW] Saving gateway %s settings: %s', $gateway_id, json_encode($settings)));
+        error_log(sprintf('[WooNooW] Current enabled: %s, New enabled: %s', 
+            isset($current_settings['enabled']) ? $current_settings['enabled'] : 'not set',
+            isset($new_settings['enabled']) ? $new_settings['enabled'] : 'not set'
+        ));
+        
+        // Update gateway settings directly
+        $gateway->settings = $new_settings;
+        
+        // Save to database using WooCommerce's method
+        $saved = update_option($gateway->get_option_key(), $gateway->settings, 'yes');
+        error_log(sprintf('[WooNooW] update_option returned: %s', $saved ? 'true' : 'false'));
+        
+        // Update the enabled property specifically (WooCommerce does this)
+        if (isset($new_settings['enabled'])) {
+            $gateway->enabled = $new_settings['enabled'];
+            error_log(sprintf('[WooNooW] Set gateway->enabled to: %s', $gateway->enabled));
         }
         
         // Re-enable HTTP requests