feat: add withdraw request functionality and UI components

database/migrations/2026_08_26_000000_create_invoices_table.php

@@ -0,0 +1,54 @@
+<?php
+
+use App\Enums\DocumentModalityEnum;
+use App\Enums\InvoiceStatusEnum;
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\DB;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('invoices', function (Blueprint $table) {
+            $table->id();
+            $table->string('number')->unique();
+            $table->unsignedBigInteger('amount');
+            $table->string('status')->default(InvoiceStatusEnum::Pending->value);
+            $table->string('payment_method')->nullable();
+            $table->timestamp('paid_at')->nullable();
+            $table->timestamps();
+
+            $table->foreignId('document_id')->nullable()->constrained('documents')->cascadeOnDelete();
+            $table->foreignId('user_id')->constrained('users')->cascadeOnDelete();
+        });
+
+        DB::table('documents')->orderBy('id')->each(function ($document) {
+            $modality = DocumentModalityEnum::tryFrom($document->modality);
+
+            if (!$modality) {
+                return;
+            }
+
+            $id = DB::table('invoices')->insertGetId([
+                'number' => 'pending',
+                'amount' => $modality->price(),
+                'status' => InvoiceStatusEnum::Pending->value,
+                'document_id' => $document->id,
+                'user_id' => $document->requester_id,
+                'created_at' => $document->created_at,
+                'updated_at' => $document->created_at,
+            ]);
+
+            DB::table('invoices')->where('id', $id)->update([
+                'number' => str_pad((string) $id, 5, '0', STR_PAD_LEFT),
+            ]);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('invoices');
+    }
+};