feat: implement FlowExecutor for executing flow definitions with DAG traversal and node execution

ccw/frontend/package.json

@@ -0,0 +1,42 @@
+{
+  "name": "ccw-frontend",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "tsc && vite build",
+    "preview": "vite preview",
+    "lint": "eslint . --ext ts,tsx --report-unused-disable-directives --max-warnings 0"
+  },
+  "dependencies": {
+    "react": "^18.3.1",
+    "react-dom": "^18.3.1",
+    "react-router-dom": "^6.28.0",
+    "zustand": "^5.0.0",
+    "@tanstack/react-query": "^5.60.0",
+    "@xyflow/react": "^12.3.0",
+    "@radix-ui/react-dialog": "^1.1.0",
+    "@radix-ui/react-dropdown-menu": "^2.1.0",
+    "@radix-ui/react-tabs": "^1.1.0",
+    "@radix-ui/react-tooltip": "^1.1.0",
+    "@radix-ui/react-select": "^2.1.0",
+    "@radix-ui/react-toast": "^1.2.0",
+    "clsx": "^2.1.0",
+    "tailwind-merge": "^2.5.0",
+    "class-variance-authority": "^0.7.0",
+    "lucide-react": "^0.460.0",
+    "zod": "^3.23.8"
+  },
+  "devDependencies": {
+    "@types/react": "^18.3.0",
+    "tailwindcss-animate": "^1.0.7",
+    "@types/react-dom": "^18.3.0",
+    "@vitejs/plugin-react": "^4.3.0",
+    "autoprefixer": "^10.4.20",
+    "postcss": "^8.4.40",
+    "tailwindcss": "^3.4.0",
+    "typescript": "^5.6.0",
+    "vite": "^6.0.0"
+  }
+}