fix: make notifications migration idempotent

database/migrations/2026_09_18_021743_create_notifications_table.php

@@ -11,14 +11,16 @@ return new class extends Migration
      */
     public function up(): void
     {
-        Schema::create('notifications', function (Blueprint $table) {
-            $table->uuid('id')->primary();
-            $table->string('type');
-            $table->morphs('notifiable');
-            $table->text('data');
-            $table->timestamp('read_at')->nullable();
-            $table->timestamps();
-        });
+        if (!Schema::hasTable('notifications')) {
+            Schema::create('notifications', function (Blueprint $table) {
+                $table->uuid('id')->primary();
+                $table->string('type');
+                $table->morphs('notifiable');
+                $table->text('data');
+                $table->timestamp('read_at')->nullable();
+                $table->timestamps();
+            });
+        }
     }
 
     /**