Updates to Agent_00, Molten Bot, molten.bot.

Added an unused-code and asset cleanup task to the task library, with refreshed prompts and catalog coverage.

Improved Git Chat history with selectable and copyable messages, deferred rerenders during selection, and correctly ordered completion responses.

Fixed PR check handling so runs with no configured required status checks can pass without falling back to misleading failures.

Updated routing tests around the Agents workspace so legacy dashboard, chat, assistant, and login paths land on the current chat surface.

Refreshed the Molten Bot Agent page with stronger Slack, Telegram, and web chat positioning, channel logos, and launch calls to action.

Fixed Agent page SEO and social sharing with crawler-friendly static routing, canonical login targets, and a dedicated preview image.