Cleaner assistant chats when apps inject extra context
Context an application injects into a user turn no longer clutters the conversation. It now folds into a collapsible disclosure that's there when needed and out of the way otherwise.
Features
Collapse injected context into an "Additional context" disclosure#3721 - App-injected context in a user turn now folds into a collapsed Additional context disclosure that expands to inspect, instead of rendering the raw tags inline. The expanded block wraps to the message width, so opening it no longer widens the chat bubble. (Author: @adaam2)
