fix(cortex-gui): prevent double window on IDE mode startup (#533)

Fixed two related issues in cortex-gui:

1. Double window on startup: When the app was closed while a new window
   (created via "New Window") was open, it was saved to window_sessions.json
   with a label like "main-xxxxxxxx". On restart, restore_windows() would
   recreate this window since it only checked for exact match with "main".
   This caused two windows to appear (the default main window from
   tauri.conf.json plus the restored main-* window).

2. Infinite loading in IDE mode: Related to the double window issue,
   when two windows competed for resources, the file explorer could get
   stuck in a loading state.

Fix: Skip restoring windows with labels starting with "main-" during
window restoration. These are temporary additional IDE windows that
users create at runtime and shouldn't persist across restarts.
Auxiliary windows (aux-*) are still restored normally.

Author: echobt

cortex-gui/src-tauri/src/window.rs

@@ -204,12 +204,25 @@ pub async fn restore_windows(app: &AppHandle) {
                 }
             };
             for session in sessions {
+                // Skip restoring windows that start with "main-" (additional IDE windows)
+                // These windows were created by the user via "New Window" and shouldn't
+                // persist across restarts to avoid the double window bug.
+                // Only restore auxiliary windows (aux-*) or update the main window bounds.
+                if session.label.starts_with("main-") {
+                    info!(
+                        "Skipping restoration of additional IDE window: {}",
+                        session.label
+                    );
+                    continue;
+                }
+
                 guard.insert(
                     session.label.clone(),
                     (session.path.clone(), session.bounds.clone()),
                 );
 
                 // Re-create the window if it's not the main one (which is created by default)
+                // Note: "main" window is created by tauri.conf.json, we only update its bounds
                 if session.label != "main" {
                     let _ =
                         create_window_internal(app, session.label, session.path, session.bounds);