feishu-send-file
Feishu file sending skill. Used to send ordinary file attachments (HTML, ZIP, PDF, code files, etc.) to users via Feishu, and to handle the reliable remediation scenario where "a local image path gets sent as path text". Ordinary files must first be uploaded to obtain `file_key` before sending; when a local image is sent with `message`/`media` , only `/root/...png`…