Revert "chore: build frontend and fix tsc config for vitest/config import"

This reverts commit 9bebb13b2c.

ui/src/__tests__/KnobCard.test.tsx

@@ -39,12 +39,12 @@ interface RenderOptions {
   runningApps?: string[];
   sinks?:       AudioDevice[];
   sources?:     AudioDevice[];
-  onChange?:    (knob: KnobConfig) => void;
+  onChange?:    ReturnType<typeof vi.fn>;
 }
 
 function renderCard(
   overrides: Partial<KnobConfig> = {},
-  { runningApps, sinks, sources, onChange = vi.fn() as (knob: KnobConfig) => void }: RenderOptions = {},
+  { runningApps, sinks, sources, onChange = vi.fn() }: RenderOptions = {},
 ) {
   const knob: KnobConfig = {
     action: 'app_volume',

ui/tsconfig.node.json

@@ -4,7 +4,7 @@
     "target": "ES2023",
     "lib": ["ES2023"],
     "module": "ESNext",
-    "types": ["node", "vitest/globals"],
+    "types": ["node"],
     "skipLibCheck": true,
 
     /* Bundler mode */

ui/vite.config.ts

@@ -1,5 +1,4 @@
-/// <reference types="vitest" />
-import { defineConfig } from 'vitest/config'
+import { defineConfig } from 'vite'
 import react from '@vitejs/plugin-react'
 
 // https://vite.dev/config/