January 2026 monthly summary for nix-community/home-manager: Implemented automatic sourcing of event handling functions during Fish shell initialization to ensure event handlers are active without manual invocation. Added a new sourcing function for handlers and accompanying tests validating their presence in the configuration. This fix improves startup reliability and user experience by eliminating manual steps to activate event switches. Technologies demonstrated: Fish shell scripting, initialization patterns, test-driven development, and adherence to code review and quality practices. Business value: more reliable shell init behavior for end-users configuring Home Manager, reduced manual maintenance, and improved test coverage.