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/Terminal/ShellSession.php

@@ -0,0 +1,18 @@
+<?php
+
+namespace App\Services\Hosting\Terminal;
+
+interface ShellSession
+{
+    public function boot(): void;
+
+    public function read(): string;
+
+    public function write(string $input): void;
+
+    public function resize(int $cols, int $rows): void;
+
+    public function isAlive(): bool;
+
+    public function close(): void;
+}