Rename CLI from claude-browse to browse

- Changed bin name from claude-browse to browse in package.json
- Updated all CLI help, examples, and version output in cli.ts
- Updated MCP server config to use node with plugin root path
- Updated README with new command name
- Bumped version to 0.2.7

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@saiden/browse",
-  "version": "0.2.6",
+  "version": "0.2.7",
   "description": "Headless browser automation for Claude Code using Playwright WebKit",
   "type": "module",
   "main": "dist/index.js",