chore: fix mrr calculation and grid import

app/Models/Plan.php

@@ -264,6 +264,34 @@ class Plan extends Model
         return $this->monthly_billing ? 'Monthly' : 'Yearly';
     }
 
+    /**
+     * Calculate Monthly Recurring Revenue (MRR) for this plan
+     */
+    public function calculateMRR(): float
+    {
+        if (! $this->price) {
+            return 0;
+        }
+
+        // Use the new billing cycle system if available
+        if ($this->billing_cycle_days) {
+            return ($this->price / $this->billing_cycle_days) * 30;
+        }
+
+        // Fallback to legacy system
+        $cycleDays = $this->monthly_billing ? 30 : 365;
+
+        return ($this->price / $cycleDays) * 30;
+    }
+
+    /**
+     * Get monthly price attribute for compatibility
+     */
+    public function getMonthlyPriceAttribute(): float
+    {
+        return $this->calculateMRR();
+    }
+
     /**
      * Get plan metadata value
      */