Built-in MCP Server, Expanded AI Tools, and Individual Topic Export in HelpNDoc 10.8

HelpNDoc 10.8 introduces a built-in MCP server that connects compatible external AI clients to the currently open project, along with a greatly expanded AI toolset for managing topics, keywords, tags, statuses, library items, project properties, and the HelpNDoc user interface. This release also adds individual topic export to HTML and PDF, expands scripting support for Markdown content and picture attributes, improves generated documentation, and delivers important reliability, compatibility, storage, licensing, and user-interface updates.
