feat: add active search space management to Electron API and UI

- Introduced IPC channels for getting and setting the active search space, enhancing user experience across the application.
- Updated the preload script to expose new API methods for active search space management.
- Modified the main window and quick ask functionalities to sync the active search space based on user navigation.
- Enhanced the desktop and web applications to allow users to select and manage their default search space seamlessly.
- Implemented automatic synchronization of the active search space during login and navigation events.

surfsense_desktop/src/ipc/channels.ts

@@ -38,4 +38,7 @@ export const IPC_CHANNELS = {
   // Keyboard shortcut configuration
   GET_SHORTCUTS: 'shortcuts:get',
   SET_SHORTCUTS: 'shortcuts:set',
+  // Active search space
+  GET_ACTIVE_SEARCH_SPACE: 'search-space:get-active',
+  SET_ACTIVE_SEARCH_SPACE: 'search-space:set-active',
 } as const;