Feishu Cli Export

Exports Feishu documents and wikis to local Markdown files, or kicks off async exports to PDF and Word. Handles both regular docs and knowledge base nodes, including spreadsheets which get converted to Markdown tables. The Markdown-as-interchange-format approach makes sense here since Claude can actually parse and work with the exported content. Ships with image download support (critical since Feishu stores images as tokens), callout blocks, formulas, and even converts Mermaid diagrams from text-drawing widgets back to code. The recursive export-tree command is the real win if you need to backup entire wiki subtrees while preserving directory structure. Requires feishu-cli installed and proper app permissions configured.