fix: remove unused imports breaking Railway build

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/components/common/CreateFlowDropdown.tsx

@@ -1,6 +1,6 @@
 import { useState } from 'react'
 import { Link, useNavigate } from 'react-router-dom'
-import { Plus, ChevronDown, Sparkles, FolderTree, ListOrdered, Wrench } from 'lucide-react'
+import { Plus, ChevronDown, Sparkles, FolderTree, ListOrdered } from 'lucide-react'
 import { cn } from '@/lib/utils'
 import { editorAIApi } from '@/api/editorAI'
 import { apiClient } from '@/api/client'