新增: 初始化 DevFlow 项目仓库

Tauri 2 + Vue 3 + Vite 6 桌面应用，Rust workspace 含 13 个 crate
(df-ai / df-storage / df-workflow / df-core / df-execute 等)。
核心能力：AI 聊天 agentic 循环(工具调用+人工审批)、工作流引擎、
任务/想法/项目/阶段管理、可追溯性，及配套前端组件。

package.json

@@ -0,0 +1,29 @@
+{
+  "name": "devflow",
+  "private": true,
+  "version": "0.1.0",
+  "type": "module",
+  "scripts": {
+    "dev": "vite",
+    "build": "vue-tsc --noEmit && vite build",
+    "preview": "vite preview",
+    "tauri": "tauri"
+  },
+  "dependencies": {
+    "@arco-design/web-vue": "^2.58.0",
+    "@tauri-apps/api": "^2",
+    "dompurify": "^3.4.9",
+    "marked": "^18.0.5",
+    "vue": "^3.5.13",
+    "vue-i18n": "9",
+    "vue-router": "4"
+  },
+  "devDependencies": {
+    "@tauri-apps/cli": "^2",
+    "@types/dompurify": "^3.2.0",
+    "@vitejs/plugin-vue": "^5.2.1",
+    "typescript": "~5.6.3",
+    "vite": "^6.0.7",
+    "vue-tsc": "^2.2.0"
+  }
+}