feat(core): initialize project skeleton with Electron + React + TypeScript

Set up the complete project foundation for ClawX, a graphical AI assistant:

- Electron main process with IPC handlers, menu, tray, and gateway management
- React renderer with routing, layout components, and page scaffolding
- Zustand state management for gateway, settings, channels, skills, chat, and cron
- shadcn/ui components with Tailwind CSS and CSS variable theming
- Build tooling with Vite, electron-builder, and TypeScript configuration
- Testing setup with Vitest and Playwright
- Development configurations (ESLint, Prettier, gitignore, env example)

electron/utils/paths.ts

@@ -0,0 +1,72 @@
+/**
+ * Path Utilities
+ * Cross-platform path resolution helpers
+ */
+import { app } from 'electron';
+import { join } from 'path';
+import { homedir } from 'os';
+import { existsSync, mkdirSync } from 'fs';
+
+/**
+ * Expand ~ to home directory
+ */
+export function expandPath(path: string): string {
+  if (path.startsWith('~')) {
+    return path.replace('~', homedir());
+  }
+  return path;
+}
+
+/**
+ * Get OpenClaw config directory
+ */
+export function getOpenClawConfigDir(): string {
+  return join(homedir(), '.openclaw');
+}
+
+/**
+ * Get ClawX config directory
+ */
+export function getClawXConfigDir(): string {
+  return join(homedir(), '.clawx');
+}
+
+/**
+ * Get ClawX logs directory
+ */
+export function getLogsDir(): string {
+  return join(app.getPath('userData'), 'logs');
+}
+
+/**
+ * Get ClawX data directory
+ */
+export function getDataDir(): string {
+  return app.getPath('userData');
+}
+
+/**
+ * Ensure directory exists
+ */
+export function ensureDir(dir: string): void {
+  if (!existsSync(dir)) {
+    mkdirSync(dir, { recursive: true });
+  }
+}
+
+/**
+ * Get resources directory (for bundled assets)
+ */
+export function getResourcesDir(): string {
+  if (app.isPackaged) {
+    return join(process.resourcesPath, 'resources');
+  }
+  return join(__dirname, '../../resources');
+}
+
+/**
+ * Get preload script path
+ */
+export function getPreloadPath(): string {
+  return join(__dirname, '../preload/index.js');
+}