fix(api): enforce destination access and cleanup networks

Require admin team membership for destination mutations, return invalid-token
responses for tokenless requests, and remove standalone Docker networks when
deleting destinations.

app/Actions/Destination/RemoveStandaloneDockerNetwork.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace App\Actions\Destination;
+
+use App\Models\StandaloneDocker;
+
+class RemoveStandaloneDockerNetwork
+{
+    public function handle(StandaloneDocker $destination): void
+    {
+        $safeNetwork = escapeshellarg($destination->network);
+
+        instant_remote_process(["docker network disconnect {$safeNetwork} coolify-proxy"], $destination->server, throwError: false);
+        instant_remote_process(["docker network rm -f {$safeNetwork}"], $destination->server);
+    }
+}