feat: Add workflow dashboard template and utility functions

- Implemented a new HTML template for the workflow dashboard, featuring a responsive design with dark/light theme support, session statistics, and task management UI.
- Created a browser launcher utility to open HTML files in the default browser across platforms.
- Developed file utility functions for safe reading and writing of JSON and text files.
- Added path resolver utilities to validate and resolve file paths, ensuring security against path traversal attacks.
- Introduced UI utilities for displaying styled messages and banners in the console.

ccw/bin/ccw.js

@@ -0,0 +1,10 @@
+#!/usr/bin/env node
+
+/**
+ * CCW CLI - Claude Code Workflow Dashboard
+ * Entry point for global CLI installation
+ */
+
+import { run } from '../src/cli.js';
+
+run(process.argv);