**Refactor imports and improve type annotations**

- Adjusted import statements across the codebase to align with consistent use of `type`.
- Unified usage of `EventSource` initialization.
- Introduced `RootDeps` type for shared dependencies.
- Commented out unused VitePWA configuration.
- Updated proxy target URLs in Vite configuration.

packages/client/src/components/code/CodeBlock.tsx

@@ -1,4 +1,4 @@
-import React, { useState, useEffect, useCallback, useMemo } from "react";
+import React, { useState, useEffect, useCallback } from "react";
 import { buildCodeHighlighter } from "./CodeHighlighter";
 
 interface CodeBlockProps {