feat: prompt command (MessageBox), admin status in banner

crates/client/src/main.rs

@@ -23,9 +23,26 @@ mod windows_mgmt;
 fn banner() {
     println!();
     println!("  {}  HELIOS REMOTE  v{} ({})", "☀".yellow().bold(), env!("CARGO_PKG_VERSION"), env!("GIT_COMMIT"));
+    #[cfg(windows)]
+    {
+        let admin = is_admin();
+        let admin_str = if admin {
+            "admin".green().bold()
+        } else {
+            "user (no admin)".yellow()
+        };
+        println!("  {}  running as {}", "─".repeat(20).dimmed(), admin_str);
+    }
+    #[cfg(not(windows))]
     println!("  {}", "─".repeat(45).dimmed());
 }
 
+#[cfg(windows)]
+fn is_admin() -> bool {
+    use windows::Win32::UI::Shell::IsUserAnAdmin;
+    unsafe { IsUserAnAdmin().as_bool() }
+}
+
 macro_rules! log_status {
     ($($arg:tt)*) => {
         println!("  {} {}", "→".cyan().bold(), format!($($arg)*));
@@ -325,6 +342,37 @@ async fn handle_message(
             }
         }
 
+        ServerMessage::PromptRequest { request_id, message, title } => {
+            let title = title.unwrap_or_else(|| "Helios Remote".to_string());
+            log_cmd!("prompt › {}", &message[..message.len().min(60)]);
+            #[cfg(windows)]
+            {
+                use windows::core::PCWSTR;
+                use windows::Win32::UI::WindowsAndMessaging::{MessageBoxW, MB_OK, MB_ICONINFORMATION, HWND_DESKTOP};
+                let msg_wide: Vec<u16> = message.encode_utf16().chain(std::iter::once(0)).collect();
+                let title_wide: Vec<u16> = title.encode_utf16().chain(std::iter::once(0)).collect();
+                // Run blocking MessageBox in a thread so we don't block the async runtime
+                let msg_clone = message.clone();
+                tokio::task::spawn_blocking(move || {
+                    unsafe {
+                        MessageBoxW(
+                            HWND_DESKTOP,
+                            PCWSTR(msg_wide.as_ptr()),
+                            PCWSTR(title_wide.as_ptr()),
+                            MB_OK | MB_ICONINFORMATION,
+                        );
+                    }
+                }).await.ok();
+                log_ok!("User confirmed: {}", &msg_clone[..msg_clone.len().min(40)]);
+            }
+            #[cfg(not(windows))]
+            {
+                // On non-Windows just log it
+                println!("  [PROMPT] {}", message);
+            }
+            ClientMessage::Ack { request_id }
+        }
+
         ServerMessage::ExecRequest { request_id, command } => {
             // Truncate long commands for display
             let cmd_display = if command.len() > 60 {