make theme selectable in UI

client/src/App.tsx

@@ -29,7 +29,7 @@ import { useCallback, useEffect, useRef, useState } from "react";
 import {
   Notification,
   StdErrNotification,
-  StdErrNotificationSchema
+  StdErrNotificationSchema,
 } from "./lib/notificationTypes";
 
 import { Tabs, TabsList, TabsTrigger } from "@/components/ui/tabs";
@@ -54,7 +54,6 @@ import RootsTab from "./components/RootsTab";
 import SamplingTab, { PendingRequest } from "./components/SamplingTab";
 import Sidebar from "./components/Sidebar";
 import ToolsTab from "./components/ToolsTab";
-import useDarkModeSync from "./lib/useDarkModeSync";
 
 const DEFAULT_REQUEST_TIMEOUT_MSEC = 10000;
 
@@ -144,8 +143,6 @@ const App = () => {
   const dragStartY = useRef<number>(0);
   const dragStartHeight = useRef<number>(0);
 
-  useDarkModeSync();
-
   const handleDragStart = useCallback(
     (e: React.MouseEvent) => {
       setIsDragging(true);