feat(domains): add structured URL editing and responsive domain controls

Add reusable domain URL parsing and input components, expose per-domain
redirect and indexing controls, and improve application and service domain
layouts across responsive breakpoints.

tests/Unit/DomainUrlPartsTest.php

@@ -0,0 +1,30 @@
+<?php
+
+use App\Support\DomainUrlParts;
+
+it('composes a domain URL from segmented fields', function () {
+    expect(DomainUrlParts::compose('https', 'app.example.com', '3000', 'api/v3'))
+        ->toBe('https://app.example.com:3000/api/v3');
+});
+
+it('splits a domain URL while preserving its path query and fragment', function () {
+    expect(DomainUrlParts::split('http://app.example.com:8080/api?v=1#docs'))->toBe([
+        'scheme' => 'http',
+        'host' => 'app.example.com',
+        'port' => '8080',
+        'path' => '/api?v=1#docs',
+    ]);
+});
+
+it('defaults empty values for an invalid URL', function () {
+    expect(DomainUrlParts::split(''))->toBe([
+        'scheme' => 'https',
+        'host' => '',
+        'port' => '',
+        'path' => '',
+    ]);
+});
+
+it('preserves an explicitly configured default port', function () {
+    expect(DomainUrlParts::split('https://app.example.com:443')['port'])->toBe('443');
+});