fix(ui): normalize S3 endpoints and remove duplicate config warnings

Normalize endpoints on blur and submit, link internal-target errors to settings, and target the S3 submit loading state.

tests/Unit/S3StorageEndpointNormalizationTest.php

@@ -0,0 +1,29 @@
+<?php
+
+use App\Livewire\Storage\Create;
+use Tests\TestCase;
+
+uses(TestCase::class);
+
+it('normalizes S3 endpoints without a Livewire blur request', function () {
+    $view = file_get_contents(resource_path('views/livewire/storage/create.blade.php'));
+
+    expect($view)
+        ->not->toContain('wire:model.blur="endpoint"')
+        ->toContain('x-on:blur')
+        ->toContain('const hasScheme')
+        ->toContain('dispatchEvent');
+});
+
+it('normalizes endpoints again on the backend', function (string $endpoint, string $expected) {
+    $method = new ReflectionMethod(Create::class, 'normalizeEndpoint');
+
+    expect($method->invoke(new Create, $endpoint))->toBe($expected);
+})->with([
+    'missing scheme' => ['s3.example.com', 'https://s3.example.com'],
+    'existing HTTP scheme' => ['http://192.168.1.50:9000', 'http://192.168.1.50:9000'],
+    'malformed HTTP scheme' => ['http:/192.168.1.50:9000', 'http:/192.168.1.50:9000'],
+    'hostname with port' => ['minio.internal:9000', 'https://minio.internal:9000'],
+    'unsupported scheme' => ['ftp://s3.example.com', 'ftp://s3.example.com'],
+    'DigitalOcean bucket endpoint' => ['https://bucket.nyc3.digitaloceanspaces.com', 'https://nyc3.digitaloceanspaces.com'],
+]);