Initial Ladill Hosting app with Gitea deploy pipeline.

Shared web hosting extracted from the platform monolith, with CI deploy
to /var/www/ladill-hosting matching Bird/Domains/Email.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/Services/Hosting/PanelRuntimeResolver.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Services\Hosting;
+
+use App\Models\CustomerHostingOrder;
+use App\Models\HostingAccount;
+use App\Services\Hosting\Contracts\PanelRuntimeInterface;
+use App\Services\Hosting\PanelRuntimes\SharedHostingPanelRuntime;
+use InvalidArgumentException;
+use RuntimeException;
+
+class PanelRuntimeResolver
+{
+    public function __construct(
+        private SharedHostingPanelRuntime $sharedHostingRuntime,
+    ) {}
+
+    public function forSubject(mixed $subject): PanelRuntimeInterface
+    {
+        if ($subject instanceof HostingAccount) {
+            return $this->sharedHostingRuntime;
+        }
+
+        if ($subject instanceof CustomerHostingOrder) {
+            throw new RuntimeException('Server-backed hosting panel runtime is not enabled yet for this order.');
+        }
+
+        throw new InvalidArgumentException('Unsupported panel runtime subject.');
+    }
+}