feat: source tokens and client events API

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01BCrwHHnGCB5XH968Nxokqw

core/app/Http/Middleware/RemoteUser.php

@@ -0,0 +1,15 @@
+<?php
+
+namespace App\Http\Middleware;
+
+use Closure;
+use Illuminate\Http\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+class RemoteUser
+{
+    public function handle(Request $request, Closure $next): Response
+    {
+        return $next($request);
+    }
+}