Feishu Lark Agent

This is a comprehensive agent for Feishu/Lark that handles everything except attendance checks and rich message formatting. You can send messages, search chat history, create and read documents, manipulate multidimensional tables (bitable), manage calendar events, and handle tasks. The implementation is thoughtful about ID formats (ou_ for users, oc_ for chats) and includes practical gotchas like needing to fetch field names before adding table records, or that the bot can't access personal calendars and you must use cal calendars first. The trigger word system in Chinese makes it easy to invoke from natural language. If you're building Feishu automation workflows, this covers most operational needs in one place without juggling multiple tools.