Update npm packages to latest versions

Fix JavaScript sourcemap paths to show full file locations
Implement --build-debug flag and complete Build UI streaming
Add xterm.js terminal UI and fix asset path routing
Add RSpade Build UI service with WebSocket support

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/RSpade/Commands/Rsx/Manifest_Build_Command.php

@@ -19,7 +19,8 @@ class Manifest_Build_Command extends FrameworkDeveloperCommand
      */
     protected $signature = 'rsx:manifest:build
                             {--force : Execute rsx:clean then rsx:manifest:build via PHP exec}
-                            {--clean : Clear all caches before building (forces complete rebuild)}';
+                            {--clean : Clear all caches before building (forces complete rebuild)}
+                            {--build-debug : Enable verbose build output (shows file-by-file processing)}';
 
     /**
      * The console command description.
@@ -28,6 +29,20 @@ class Manifest_Build_Command extends FrameworkDeveloperCommand
      */
     protected $description = 'Build or rebuild the RSX manifest (incremental by default, use --clean for full rebuild)';
 
+    /**
+     * Create a new command instance
+     */
+    public function __construct()
+    {
+        parent::__construct();
+
+        // Check if --build-debug flag is present in command line args
+        // Define BUILD_DEBUG_MODE early so it's set before service providers boot
+        if (in_array('--build-debug', $_SERVER['argv'] ?? [])) {
+            define('BUILD_DEBUG_MODE', true);
+        }
+    }
+
     /**
      * Execute the console command.
      *
@@ -35,6 +50,7 @@ class Manifest_Build_Command extends FrameworkDeveloperCommand
      */
     public function handle()
     {
+
         // Handle --force flag: complete clean and rebuild via exec
         if ($this->option('force')) {
             // Execute rsx:clean