fix(plans): prevent deletion of plans with active subscriptions

- Fix bulk delete and individual delete actions using before() hook with halt()
  - Add daily/weekly billing cycle options to plan resource and Polar provider
  - Enhance payment confirmation with dynamic polling and loading states
  - Add graceful handling for deleted plans in subscription display
  - Update Polar provider to support dynamic billing cycles

app/Services/Payments/Providers/PolarProvider.php

@@ -1106,24 +1106,28 @@ class PolarProvider implements PaymentProviderContract
             ]);
         }
 
+        // Convert billing cycle to Polar's format
+        $billingInterval = $this->convertBillingCycleToPolarInterval($plan->billing_cycle_days ?? 30);
+
         // Create new product with correct structure
         $productData = [
             'name' => $plan->name,
             'description' => $plan->description ?? 'Subscription plan',
-            'recurring_interval' => 'month',
-            'recurring_interval_count' => 1,
+            'recurring_interval' => $billingInterval['interval'],
+            'recurring_interval_count' => $billingInterval['interval_count'],
             'prices' => [
                 [
                     'amount_type' => 'fixed',
                     'price_amount' => (int) ($plan->price * 100), // Convert to cents
                     'price_currency' => 'usd',
-                    'recurring_interval' => 'month',
-                    'recurring_interval_count' => 1,
+                    'recurring_interval' => $billingInterval['interval'],
+                    'recurring_interval_count' => $billingInterval['interval_count'],
                 ],
             ],
             'metadata' => [
                 'plan_id' => $plan->id,
                 'plan_name' => $plan->name,
+                'billing_cycle_days' => $plan->billing_cycle_days ?? 30,
             ],
         ];
 
@@ -2361,4 +2365,21 @@ class PolarProvider implements PaymentProviderContract
         // For now, return basic stats - could be expanded with database tracking
         return $stats;
     }
+
+    /**
+     * Convert billing cycle days to Polar's recurring interval format
+     */
+    protected function convertBillingCycleToPolarInterval(int $billingCycleDays): array
+    {
+        return match ($billingCycleDays) {
+            1 => ['interval' => 'day', 'interval_count' => 1],       // Daily
+            7 => ['interval' => 'week', 'interval_count' => 1],      // Weekly
+            30 => ['interval' => 'month', 'interval_count' => 1],     // Monthly
+            60 => ['interval' => 'month', 'interval_count' => 2],     // Bi-monthly
+            90 => ['interval' => 'month', 'interval_count' => 3],     // Quarterly
+            180 => ['interval' => 'month', 'interval_count' => 6],    // Semi-annual
+            365 => ['interval' => 'year', 'interval_count' => 1],     // Yearly
+            default => ['interval' => 'month', 'interval_count' => 1], // Default to monthly
+        };
+    }
 }