feat: initialize ZCLAW project with core systems and Tauri desktop

- Created backend core systems:
  - Remote Execution System (远程执行系统)
  - Task Orchestration Engine (任务编排引擎)
  - Persistent Memory System (持续记忆系统)
  - Proactive Service System (主动服务系统)

- Created Tauri desktop app:
  - Three-column layout based on AutoClaw design
  - React + TypeScript + Tailwind CSS
  - Zustand state management
  - Lucide React icons

- Components:
  - Sidebar (Agent list, IM channels, scheduled tasks)
  - ChatArea (Chat interface with message bubbles)
  - RightPanel (Task progress, statistics, next actions)

Next: Test Tauri dev server and integrate with OpenClaw backend

desktop/vite.config.ts

@@ -0,0 +1,32 @@
+import { defineConfig } from "vite";
+import react from "@vitejs/plugin-react";
+
+// @ts-expect-error process is a nodejs global
+const host = process.env.TAURI_DEV_HOST;
+
+// https://vite.dev/config/
+export default defineConfig(async () => ({
+  plugins: [react()],
+
+  // Vite options tailored for Tauri development and only applied in `tauri dev` or `tauri build`
+  //
+  // 1. prevent Vite from obscuring rust errors
+  clearScreen: false,
+  // 2. tauri expects a fixed port, fail if that port is not available
+  server: {
+    port: 1420,
+    strictPort: true,
+    host: host || false,
+    hmr: host
+      ? {
+          protocol: "ws",
+          host,
+          port: 1421,
+        }
+      : undefined,
+    watch: {
+      // 3. tell Vite to ignore watching `src-tauri`
+      ignored: ["**/src-tauri/**"],
+    },
+  },
+}));