- Add 15s timeout protection to launchPersistentContext
- Add 5s timeout + force kill to browser.close()
- Add active page sync in getPage() to fix about:blank issue
- Add 3-tier click fallback: normal → force → mouse event sequence
- Update skill with session usage guidelines and evolving flag

Fixes headed/headless mode switching timeout and React overlay click issues.

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