feat(attachment): add cropping functionality for images and update metadata storage

database/migrations/2026_08_18_000000_add_crop_data_to_attachments_table.php

@@ -0,0 +1,33 @@
+<?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::table('attachments', function (Blueprint $table): void {
+            $table->decimal('crop_horizontal_start_percent', 7, 4)->nullable()->after('size');
+            $table->decimal('crop_vertical_start_percent', 7, 4)->nullable()->after('crop_horizontal_start_percent');
+            $table->foreignId('cropped_attachment_id')
+                ->nullable()
+                ->after('crop_vertical_start_percent')
+                ->constrained('attachments')
+                ->nullOnDelete();
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('attachments', function (Blueprint $table): void {
+            $table->dropForeign(['cropped_attachment_id']);
+            $table->dropColumn([
+                'cropped_attachment_id',
+                'crop_horizontal_start_percent',
+                'crop_vertical_start_percent',
+            ]);
+        });
+    }
+};