Introduce the x-icon custom element and migrate first-party WebUI and bundled plugin markup while retaining legacy Material icon compatibility. Defer icon-font readiness until the splash-installed document is parsed so Firefox does not leave icons transparent. Centralize chat message collapse handling, avoid false Show More controls on short user messages, and align grouped-message pagination styling. Update DOX and add regression coverage for the icon and collapse behavior.
Introduce validate_tool_request() extensible method in agent.py to validate tool request structure (dict with tool_name string and tool_args dict fields) before processing. Add after_plugin_change() helper in helpers/plugins.py that clears cache and sends a frontend reload notification (throttled to display_time interval) with a reload button. Update plugin installer install/delete flows to call after_plugin_change(). Extend notification
