Bug: sheets +workbook-export returns XLSX containing only A1 from each sheet

Summary

lark-cli sheets +workbook-export reports success and downloads a valid XLSX file, but the exported workbook contains only cell A1 from each worksheet. The same spreadsheet can be read completely with sheets +table-get, confirming that the online data is present.

Environment

• lark-cli: v1.0.92
• OS: Linux amd64
• Identity: user
• Export format: xlsx

Minimal reproduction

A synthetic spreadsheet contains two worksheets:

• Alpha (A1:C4): header Item, Value, Status; rows Item-001/10/Open, Item-002/20/Closed, Item-003/30/Open.
• Beta (A1:B3): header Code, Score; rows X-01/88 and X-02/92.

Reading the spreadsheet returns all rows and columns:

lark-cli sheets +table-get --spreadsheet-token "<REDACTED>" --no-header

Exporting the same spreadsheet:

lark-cli sheets +workbook-export --spreadsheet-token "<REDACTED>" --output-path ./export.xlsx

The export command reports success and produces a valid XLSX file.

Actual result

• Alpha contains only A1 = "Item".
• Beta contains only A1 = "Code".
• All other cells are missing.

Expected result

The exported workbook should contain the complete used ranges Alpha A1:C4 and Beta A1:B3.

Notes

• The reproduction uses synthetic data only.
• No spreadsheet URL, token, account information, or private data is included.
• Because the export command reports success, this is a silent data-loss issue for callers that rely on the exported file.

Start by tracing the +workbook-export command and compare its spreadsheet-reading path with +table-get. Use the synthetic Alpha and Beta ranges from the report to reproduce the export, then verify that the resulting XLSX contains every cell in Alpha A1:C4 and Beta A1:B3 rather than only A1.