refactor: centralize authentication handling

- Replaced direct localStorage token access with a centralized `getBearerToken` function across various components and hooks to improve code maintainability and security.
- Updated API calls to use `authenticatedFetch` for consistent authentication handling.
- Enhanced user experience by ensuring proper redirection to login when authentication fails.
- Cleaned up unused imports and improved overall code structure for better readability.

surfsense_web/components/settings/prompt-config-manager.tsx

@@ -25,6 +25,7 @@ import { Tabs, TabsContent, TabsList, TabsTrigger } from "@/components/ui/tabs";
 import { Textarea } from "@/components/ui/textarea";
 import { type CommunityPrompt, useCommunityPrompts } from "@/hooks/use-community-prompts";
 import { useSearchSpace } from "@/hooks/use-search-space";
+import { authenticatedFetch } from "@/lib/auth-utils";
 
 interface PromptConfigManagerProps {
 	searchSpaceId: number;
@@ -78,14 +79,11 @@ export function PromptConfigManager({ searchSpaceId }: PromptConfigManagerProps)
 
 			// Only send request if we have something to update
 			if (Object.keys(payload).length > 0) {
-				const response = await fetch(
+				const response = await authenticatedFetch(
 					`${process.env.NEXT_PUBLIC_FASTAPI_BACKEND_URL}/api/v1/searchspaces/${searchSpaceId}`,
 					{
 						method: "PUT",
-						headers: {
-							"Content-Type": "application/json",
-							Authorization: `Bearer ${localStorage.getItem("surfsense_bearer_token")}`,
-						},
+						headers: { "Content-Type": "application/json" },
 						body: JSON.stringify(payload),
 					}
 				);