update api register

app/Models/User.php

@@ -36,6 +36,7 @@ class User extends Authenticatable
         'profile_photo_file_id',
         'password',
         'is_master',
+        'is_platform_staff',
         'access_level',
         'status',
         'verification_channel',
@@ -66,6 +67,7 @@ class User extends Authenticatable
             'email_verified_at' => 'datetime',
             'password' => 'hashed',
             'is_master' => 'boolean',
+            'is_platform_staff' => 'boolean',
             'access_level' => UserAccessLevel::class,
             'verification_code_expires_at' => 'datetime',
             'verified_at' => 'datetime',
@@ -112,14 +114,45 @@ class User extends Authenticatable
         return $this->morphMany(Wallet::class, 'owner');
     }
 
+    public function voucherAgents()
+    {
+        return $this->hasMany(VoucherAgent::class);
+    }
+
+    public function roleApplications()
+    {
+        return $this->hasMany(RoleApplication::class, 'applicant_user_id');
+    }
+
+    public function linkedCustomers()
+    {
+        return $this->belongsToMany(Customer::class, 'customer_user_links')->withPivot(['tenant_id', 'relationship', 'is_primary'])->withTimestamps();
+    }
+
     public function isMasterAdmin(): bool
     {
         return $this->is_master || $this->access_level === UserAccessLevel::MASTER_ADMIN;
     }
 
-    public function isTenantOwner(): bool
+    public function isTenantOwner(?int $tenantId = null): bool
     {
-        return $this->access_level === UserAccessLevel::TENANT_OWNER;
+        if ($this->access_level !== UserAccessLevel::TENANT_OWNER) {
+            return false;
+        }
+
+        return $this->userTenants()
+            ->where('role', 'tenant_owner')
+            ->when($tenantId, fn ($query) => $query->where('tenant_id', $tenantId))
+            ->exists();
+    }
+
+    public function tenantRole(?int $tenantId): ?string
+    {
+        if (! $tenantId) {
+            return null;
+        }
+
+        return $this->userTenants()->where('tenant_id', $tenantId)->value('role');
     }
 }