workflow +file-announce PREREQUISITE: Read for auth, global flags, and security rules. If missing, run to create it. Announce a Drive file in a Chat space Usage Flags | Flag | Required | Default | Description | |------|----------|---------|-------------| | | ✓ | — | Drive file ID to announce | | | ✓ | — | Chat space name (e.g. spaces/SPACE ID) | | | — | — | Custom announcement message | | | — | — | Output format: json (default), table, yaml, csv | Examples Tips - This is a write command — sends a Chat message. - Use first to upload the file, then announce it here. - Fetches the file name from…