v1.2.0

What's New

• Attachment commands — new attachments command group:
  • asana attachments list <task_gid> — list attachments on a task
  • asana attachments get <attachment_gid> — get attachment details
  • asana attachments upload <task_gid> <file> — upload a file to a task
  • asana attachments download <attachment_gid> — download an attachment
  • asana attachments delete <attachment_gid> — delete an attachment
• Task details show attachments — asana tasks get now displays attachments with name, size, and GID
• Updated README and CLAUDE.md with full attachment documentation