fix: CI test failures

- Add React import back in FileTreeComponent.test.tsx (required for JSX)
- Fix isValidPath to recognize Windows paths on non-Windows platforms

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

src/main/utils/pathValidation.ts

@@ -1,7 +1,12 @@
 import * as path from 'path'
 
+// Regex to match Windows absolute paths (e.g., C:\Users or D:\)
+const WINDOWS_ABSOLUTE_PATH_REGEX = /^[a-zA-Z]:[/\\]/
+
 export function isValidPath(inputPath: string): boolean {
-  if (!path.isAbsolute(inputPath)) {
+  // Check for absolute path (POSIX or Windows)
+  const isAbsolute = path.isAbsolute(inputPath) || WINDOWS_ABSOLUTE_PATH_REGEX.test(inputPath)
+  if (!isAbsolute) {
     return false
   }
 

tests/unit/renderer/components/FileTreeComponent.test.tsx

@@ -1,6 +1,7 @@
 /**
  * @vitest-environment jsdom
  */
+import * as React from 'react'
 import { act } from 'react'
 import { afterEach, beforeEach, describe, expect, it, vi } from 'vitest'
 import { createRoot, type Root } from 'react-dom/client'