Add 3-tier plans, Paystack prepaid Pro, and Enterprise contact-sales card.

Sidebar settings and upgrade share one footer with consistent spacing.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Services/Frontdesk/PlanService.php

@@ -13,9 +13,8 @@ class PlanService
         $settings = $organization->settings ?? [];
         $plan = (string) ($settings['plan'] ?? 'free');
 
-        if ($plan === 'pro' && ! empty($settings['plan_expires_at'])) {
-            $expires = Carbon::parse($settings['plan_expires_at']);
-            if ($expires->isPast()) {
+        if (in_array($plan, ['pro', 'enterprise'], true) && ! empty($settings['plan_expires_at'])) {
+            if (Carbon::parse($settings['plan_expires_at'])->isPast()) {
                 return 'free';
             }
         }
@@ -28,6 +27,17 @@ class PlanService
         return $this->planKey($organization) === 'pro';
     }
 
+    public function isEnterprise(Organization $organization): bool
+    {
+        return $this->planKey($organization) === 'enterprise';
+    }
+
+    /** Self-serve paid plans only — enterprise is sales-led. */
+    public function hasPaidPlan(Organization $organization): bool
+    {
+        return $this->planKey($organization) === 'pro';
+    }
+
     /** @return array<string, mixed> */
     public function plan(Organization $organization): array
     {