Feature: Adding Migration To Track import mappings

database/migrations/2026_07_06_000001_create_import_mappings_table.php

@@ -0,0 +1,27 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('import_mappings', function (Blueprint $table) {
+            $table->id();
+            $table->string('source');
+            $table->string('source_type');
+            $table->string('external_id');
+            $table->morphs('model');
+            $table->timestamps();
+
+            $table->unique(['source', 'source_type', 'external_id']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('import_mappings');
+    }
+};