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.

app/Support/DomainUrlParts.php

@@ -0,0 +1,56 @@
+<?php
+
+namespace App\Support;
+
+class DomainUrlParts
+{
+    public static function compose(string $scheme, string $host, string $port = '', string $path = ''): string
+    {
+        $scheme = strtolower(trim($scheme)) === 'http' ? 'http' : 'https';
+        $host = trim($host);
+        $port = trim($port);
+        $path = trim($path);
+
+        if ($path !== '' && ! str_starts_with($path, '/') && ! str_starts_with($path, '?') && ! str_starts_with($path, '#')) {
+            $path = '/'.$path;
+        }
+
+        return $scheme.'://'.$host.($port !== '' ? ':'.$port : '').$path;
+    }
+
+    /**
+     * @return array{scheme: string, host: string, port: string, path: string}
+     */
+    public static function split(?string $url): array
+    {
+        $parts = filled($url) ? parse_url($url) : false;
+        if (! is_array($parts) || blank($parts['host'] ?? null)) {
+            return self::empty();
+        }
+
+        $path = $parts['path'] ?? '';
+        if (isset($parts['query'])) {
+            $path .= '?'.$parts['query'];
+        }
+        if (isset($parts['fragment'])) {
+            $path .= '#'.$parts['fragment'];
+        }
+
+        return [
+            'scheme' => in_array(strtolower($parts['scheme'] ?? ''), ['http', 'https'], true)
+                ? strtolower($parts['scheme'])
+                : 'https',
+            'host' => (string) $parts['host'],
+            'port' => isset($parts['port']) ? (string) $parts['port'] : '',
+            'path' => $path,
+        ];
+    }
+
+    /**
+     * @return array{scheme: string, host: string, port: string, path: string}
+     */
+    public static function empty(): array
+    {
+        return ['scheme' => 'https', 'host' => '', 'port' => '', 'path' => ''];
+    }
+}