feat: add GoatCounter analytics

docs: add demo password and error handling documentation

docs: update README with correct GitHub username

feat: add backend password validation error handling

fix: update jurisdiction options to match backend validation

feat: add demo mode with password-protected real API access

fix: configure Vite to build full demo site for GitHub Pages

fix: remove npm cache requirement from workflow

fix: escape HTML entities in index.html (< characters)

feat: initial commit - InsurAI embeddable widget