Feishu Cli Import

Converts Markdown files into Feishu documents with surprisingly robust handling of complex content. The standout feature is automatic Mermaid and PlantUML diagram conversion to native Feishu whiteboards, plus smart table handling that uses API tricks to keep large tables as single blocks instead of splitting them awkwardly. It's been tested on 10,000+ line documents with 127 diagrams, and includes retry logic for rate limiting and fallback to code blocks when diagram syntax fails. The three-phase pipeline creates blocks sequentially, then processes images and diagrams concurrently. One catch: you need feishu-cli installed and configured with app credentials. This is clearly built by someone who actually imports large technical documents regularly and got tired of manual cleanup.