feat: add whatsapp_number field to suppliers, customers, users

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

database/migrations/2026_05_19_100059_add_whatsapp_number_to_customers_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('customers', function (Blueprint $table) {
+            $table->string('whatsapp_number')->nullable()->after('phone');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('customers', function (Blueprint $table) {
+            $table->dropColumn('whatsapp_number');
+        });
+    }
+};

database/migrations/2026_05_19_100059_add_whatsapp_number_to_suppliers_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('suppliers', function (Blueprint $table) {
+            $table->string('whatsapp_number')->nullable()->after('phone');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('suppliers', function (Blueprint $table) {
+            $table->dropColumn('whatsapp_number');
+        });
+    }
+};

database/migrations/2026_05_19_100100_add_whatsapp_number_to_users_table.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->string('whatsapp_number')->nullable()->after('email');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->dropColumn('whatsapp_number');
+        });
+    }
+};