HF RL Explorer

Resolve the active chatbot from loaded extensions instead of a persisted extension-settings layer.

Resolve the active chatbot from loaded extensions instead of a persisted extension-settings layer.: a task in bird-critic-1.5-full-300 (Harbor dataset). The separate persisted extension-settings layer (whose only remaining use was reading an active chatbot id pin that nothing in the product could…

The task

The separate persisted extension-settings layer (whose only remaining use was reading an `active_chatbot_id` pin that nothing in the product could actually set) must be removed entirely. Active chatbot selection should instead derive purely from the loaded extension/view registry, with the most-recently-registered…

Part of kochsnow/bird-critic-1.5-full-300.