Prompt filling and plugin hooks gain an answersPress value

What

Claude Code can fill text into your prompt box on request, for example from a plugin or a remote client. This release adds a new value, called answersPress, to that path:

• prompt.fill now passes answersPress through when it writes the text into the prompt box. Before, only the text, mode and decorations were passed.
• The prompt-fill message sent to remote clients now includes answersPress.
• Suggest-prompt requests can carry an optional answers_press field.
• Plugins, which are add-on packages for Claude Code, get two new function-hook events: plugin_function_hooks_press_drawn and plugin_function_hooks_press_fill. A hook is code that runs at a set point.
• A new control slot, resumeUntrackedAgent, starts empty.
• A defaults object gains envOnboarding turned on. Which feature it belongs to was not traced.

Why

These are mostly groundwork for plugins and remote clients. Nothing here is described as changing what you see yet.