Fix command executor

server/lib/systant/command_executor.ex

@@ -199,17 +199,25 @@ defmodule Systant.CommandExecutor do
     # Get current environment
     env = System.get_env()
     
+    # Ensure we have a proper PATH that includes system binaries
+    system_path = "/run/current-system/sw/bin:/usr/local/bin:/usr/bin:/bin"
+    current_path = Map.get(env, "PATH", "")
+    full_path = if current_path == "", do: system_path, else: "#{current_path}:#{system_path}"
+    
+    # Start with enhanced environment
+    enhanced_env = Map.put(env, "PATH", full_path)
+    
     # If running as root, add Wayland session environment for user commands
     if System.get_env("USER") == "root" do
       # Find the user's Wayland session info
       case find_user_wayland_session() do
         {:ok, wayland_env} ->
-          Map.merge(env, wayland_env)
+          Map.merge(enhanced_env, wayland_env)
         {:error, _reason} ->
-          env
+          enhanced_env
       end
     else
-      env
+      enhanced_env
     end
   end