Healenium-web is a self-healing library for Selenium WebDriver-based tests. It wraps standard WebDriver instances in a SelfHealingDriver proxy that intercepts element lookup calls and attempts to heal failed locators by finding alternative strategies when elements aren't found. The architecture uses a chain of responsibility pattern with specialized processors for finding elements, retrieving reference data from a backend service, healing elements through various selector strategies, and saving results. The system communicates with a backend service (hlm-backend) to store and retrieve element metadata, enabling intelligent locator recovery across test runs.