feat: Add user feedback dialog for manual update checks and handle dialog closure

src/webdrop_bridge/ui/main_window.py

@@ -195,6 +195,8 @@ class MainWindow(QMainWindow):
         super().__init__(parent)
         self.config = config
         self._background_threads = []  # Keep references to background threads
+        self.checking_dialog = None  # Track the checking dialog
+        self._is_manual_check = False  # Track if this is a manual check (for UI feedback)
 
         # Set window properties
         self.setWindowTitle(f"{config.app_name} v{config.app_version}")
@@ -398,12 +400,22 @@ class MainWindow(QMainWindow):
     def _on_manual_check_for_updates(self) -> None:
         """Handle manual check for updates from menu.
         
-        Triggers an immediate update check (bypass cache).
+        Triggers an immediate update check (bypass cache) with user feedback dialog.
         """
         logger.info("Manual update check requested from menu")
-        # Same as startup check, but user-initiated
+        
+        # Show "Checking for Updates..." dialog
+        from webdrop_bridge.ui.update_manager_ui import CheckingDialog
+        
+        self.checking_dialog = CheckingDialog(self)
+        self._is_manual_check = True
+        
+        # Start the update check
         self.check_for_updates_startup()
         
+        # Show the dialog
+        self.checking_dialog.show()
+
     def _show_about_dialog(self) -> None:
         """Show About dialog with version and information."""
         from PySide6.QtWidgets import QMessageBox
@@ -495,6 +507,13 @@ class MainWindow(QMainWindow):
             worker.finished.connect(worker.deleteLater)
             thread.finished.connect(thread.deleteLater)
             
+            # Close checking dialog when finished
+            def close_checking_dialog():
+                if hasattr(self, 'checking_dialog') and self.checking_dialog:
+                    self.checking_dialog.close()
+            
+            worker.finished.connect(close_checking_dialog)
+            
             # Keep reference to thread to prevent garbage collection
             self._background_threads.append(thread)
             
@@ -521,6 +540,15 @@ class MainWindow(QMainWindow):
         """
         self.set_update_status(status, emoji)
         
+        # If this is a manual check and we get the "Ready" status, it means no updates
+        if self._is_manual_check and status == "Ready":
+            # Show "No Updates Available" dialog
+            from webdrop_bridge.ui.update_manager_ui import NoUpdateDialog
+            
+            dialog = NoUpdateDialog(parent=self)
+            self._is_manual_check = False
+            dialog.exec()
+
     def _on_update_available(self, release) -> None:
         """Handle update available notification.