refactor: remove old chat components and implement new sidebar structure

- Deleted `chats-client.tsx` and `page.tsx` as part of the chat management overhaul.
- Introduced `AllChatsSidebar` and `NavChats` components for improved chat navigation and management.
- Updated sidebar to integrate new chat components and removed the deprecated `NavProjects`.
- Enhanced chat deletion handling and added loading states for better user experience.
- Added new translation keys for chat-related UI strings.

surfsense_web/components/sidebar/app-sidebar.tsx

@@ -113,9 +113,9 @@ function UserAvatar({ email, size = 32 }: { email: string; size?: number }) {
 	);
 }
 
+import { NavChats } from "@/components/sidebar/nav-chats";
 import { NavMain } from "@/components/sidebar/nav-main";
 import { NavNotes } from "@/components/sidebar/nav-notes";
-import { NavProjects } from "@/components/sidebar/nav-projects";
 import { NavSecondary } from "@/components/sidebar/nav-secondary";
 import { PageUsageDisplay } from "@/components/sidebar/page-usage-display";
 import {
@@ -446,11 +446,12 @@ export const AppSidebar = memo(function AppSidebar({
 			<SidebarContent className="space-y-6">
 				<NavMain items={processedNavMain} />
 
-				{processedRecentChats.length > 0 && (
-					<div className="space-y-2">
-						<NavProjects chats={processedRecentChats} />
-					</div>
-				)}
+				<div className="space-y-2">
+					<NavChats
+						chats={processedRecentChats}
+						searchSpaceId={searchSpaceId}
+					/>
+				</div>
 
 				<div className="space-y-2">
 					<NavNotes