Fix Windows drive letter support in path formatting regex

- Update regex pattern to support all drive letters A-Z (not just C:)
- Fix linting warning about unnecessary escape in character class
- Now properly handles paths like D:\Users\, E:\Users\, etc.

web/src/client/utils/path-utils.ts

@@ -20,7 +20,7 @@
  * formatPathForDisplay('/home/bob/projects') // returns '~/projects'
  */
 // Compile regex once for better performance
-const HOME_PATTERN = /^(?:\/Users\/[^/]+|\/home\/[^/]+|[Cc]:[\/\\]Users[\/\\][^\/\\]+|\/root)/;
+const HOME_PATTERN = /^(?:\/Users\/[^/]+|\/home\/[^/]+|[A-Za-z]:[\/\\]Users[\/\\][^\/\\]+|\/root)/;
 
 export function formatPathForDisplay(path: string): string {
   if (!path) return '';