feat: add quarter field to company history items with localization support, enhancing data organization and user experience

database/migrations/2026_05_21_180000_add_quarter_to_company_history_items_table.php

@@ -0,0 +1,30 @@
+<?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('company_history_items', function (Blueprint $table) {
+            $table->string('quarter', 2)->default('Q1')->after('year');
+            $table->index(['year', 'quarter']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('company_history_items', function (Blueprint $table) {
+            $table->dropIndex(['year', 'quarter']);
+            $table->dropColumn('quarter');
+        });
+    }
+};