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.
Refactor of messages.js to support lazy rendering.
Move chat rename functionality out of core and into a new _chat_naming plugin, and add a built-in _pin_to_top plugin for sidebar pinning. The chat-naming plugin includes API handlers, prompts, helper logic for selecting user messages and budgeted Utility Model calls, a python monologue_start extension, web UI (modal, store, config, sidebar action), and comprehensive tests. Removed the old core renaming extension and deprecated prompts/tests. Also added pin-to-top plugin files (API, helpers, webui store, tests/docs) and updated various AGENTS.md docs to reflect the new plugins and lifecycle clarifications. Minor UI/js tweak: reorder speak/copy buttons in browser tool handler and add a new webui message-window.js along with related webui/store/component updates and test adjustments.
