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/modules/active-search-space.ts

@@ -0,0 +1,24 @@
+const STORE_KEY = 'activeSearchSpaceId';
+// eslint-disable-next-line @typescript-eslint/no-explicit-any
+let store: any = null;
+
+async function getStore() {
+  if (!store) {
+    const { default: Store } = await import('electron-store');
+    store = new Store({
+      name: 'active-search-space',
+      defaults: { [STORE_KEY]: null as string | null },
+    });
+  }
+  return store;
+}
+
+export async function getActiveSearchSpaceId(): Promise<string | null> {
+  const s = await getStore();
+  return (s.get(STORE_KEY) as string | null) ?? null;
+}
+
+export async function setActiveSearchSpaceId(id: string): Promise<void> {
+  const s = await getStore();
+  s.set(STORE_KEY, id);
+}