Agent, workflow and Skill results now list the tools that were used

What

A subagent is a separate helper agent that works on a task and reports back to the main conversation. Results coming back from subagents, workflows and forked Skills now include a toolsUsed list naming the tools that ran. Before, these notifications had no such field.

• Async agents (agents running in the background) pass toolsUsed when they complete, fail or are killed.
• Workflow notifications pass toolsUsed.
• Forked Skill and forked command results can carry a toolsUsedLine. When one exists, a forked Skill result starts with it.
• User prompt records gain an optional toolsUsed field. It is passed into the agent run as promptToolsUsed and saved through an update to the session's state.
• The function that runs an agent gains onToolPool and reviewTools parameters.

Separately, the list of dialogs gains a secretPromptDialog entry, and the accountMemoryWritePermissionDialog entry moves within that list.

Why

The main conversation can now see which tools a subagent, workflow or forked Skill actually used, not only its final answer. The members do not say what secretPromptDialog shows or when it appears.