feat: harden tenant settings and import pipeline

app/Models/Tenant.php

@@ -2,14 +2,12 @@
 
 namespace App\Models;
 
+use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
 use Illuminate\Database\Eloquent\Relations\HasMany;
 use Illuminate\Database\Eloquent\Relations\HasManyThrough;
-use Illuminate\Database\Eloquent\Casts\Attribute;
 use Illuminate\Support\Facades\DB;
-use App\Models\EventPurchase;
-use App\Models\EventCreditsLedger;
 
 class Tenant extends Model
 {
@@ -17,14 +15,16 @@ class Tenant extends Model
 
     protected $table = 'tenants';
     protected $guarded = [];
+
     protected $casts = [
-        'settings' => 'array',
         'features' => 'array',
+        'settings' => 'array',
         'last_activity_at' => 'datetime',
         'event_credits_balance' => 'integer',
         'subscription_tier' => 'string',
         'subscription_expires_at' => 'datetime',
         'total_revenue' => 'decimal:2',
+        'settings_updated_at' => 'datetime',
     ];
 
     public function events(): HasMany
@@ -37,10 +37,10 @@ class Tenant extends Model
         return $this->hasManyThrough(
             Photo::class,
             Event::class,
-            'tenant_id', // Foreign key on events table...
-            'event_id',  // Foreign key on photos table...
-            'id',        // Local key on tenants table...
-            'id'         // Local key on events table...
+            'tenant_id',
+            'event_id',
+            'id',
+            'id'
         );
     }
 
@@ -59,6 +59,16 @@ class Tenant extends Model
         return $this->hasMany(EventCreditsLedger::class);
     }
 
+    public function setSettingsAttribute($value): void
+    {
+        if (is_string($value)) {
+            $this->attributes['settings'] = $value;
+            return;
+        }
+
+        $this->attributes['settings'] = json_encode($value ?? []);
+    }
+
     public function activeSubscription(): Attribute
     {
         return Attribute::make(