v0.2.15: Add import tool for Safari cookies, add downloads badge

- Add import tool to import cookies from Safari (macOS)
- Add npm downloads badge to README
- Document import tool in MCP tools reference

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@saiden/browse",
-  "version": "0.2.14",
+  "version": "0.2.15",
   "description": "Headless browser automation for Claude Code using Playwright WebKit",
   "type": "module",
   "main": "dist/index.js",