fix(linux): show window before setting click-through to prevent GTK panic

On Linux/GTK, `set_ignore_cursor_events(true)` calls
`window.window().unwrap()` in tao to access the underlying GdkWindow.
If the window hasn't been shown/realized yet, the GdkWindow is None,
causing a panic at runtime.

Move `window.show()` before `set_ignore_cursor_events(true)` so the
GdkWindow exists when the input shape region is applied.

Author: WongSaang

src-tauri/src/lib.rs

@@ -267,12 +267,13 @@ pub fn run() {
                 let _ = window.set_position(tauri::LogicalPosition::new(0.0, 0.0));
             }
 
-            // Click-through
-            window.set_ignore_cursor_events(true)?;
-
-            // Show window after ready to avoid white flash
+            // Show window first — on Linux/GTK the underlying GdkWindow must
+            // exist before input_shape_combine_region can be called.
             let _ = window.show();
 
+            // Click-through (must be after show on Linux)
+            window.set_ignore_cursor_events(true)?;
+
             // Sync autostart state with saved setting (default: enabled)
             {
                 let autostart_mgr = app.autolaunch();