Add AI Agent for Contextual Answers and Executable Workflows

[nayname]

Description

This PR adds the first version of an AI-powered assistant

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Added Files

• scripts/agent_executor.js

  Implements the UI widget and logic for natural-language execution, including:

  • Floating chat input + expandable sidebar
  • Intent detection (answer, workflow, or mixed)
  • Workflow preview and mock execution mode (disabled for now)
  • Conversation and workflow memory

• book.json

  Registers the script so it loads across all documentation pages.

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Purpose

This shifts the documentation from static reference to an interactive layer where users can ask questions, generate workflows, and execute actions directly from the page.

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Still working on the implementation