chore: import upstream snapshot with attribution

tests/cli_e2e/sheets/sheets_gridline_workflow_test.go

@@ -0,0 +1,55 @@
+// Copyright (c) 2026 Lark Technologies Pte. Ltd.
+// SPDX-License-Identifier: MIT
+
+package sheets
+
+import (
+	"context"
+	"testing"
+	"time"
+
+	clie2e "github.com/larksuite/cli/tests/cli_e2e"
+	"github.com/stretchr/testify/require"
+	"github.com/tidwall/gjson"
+)
+
+// TestSheets_GridlineWorkflow round-trips +sheet-show-gridline and
+// +sheet-hide-gridline against a real spreadsheet. The dry-run E2E pins the
+// wire shape; this live test validates the backend accepts both operations
+// end-to-end (the gridline state itself is write-only — there is no read
+// field exposed via +sheet-info / +workbook-info — so success here is the
+// ok=true envelope, not a value comparison).
+func TestSheets_GridlineWorkflow(t *testing.T) {
+	parentT := t
+	ctx, cancel := context.WithTimeout(context.Background(), 2*time.Minute)
+	t.Cleanup(cancel)
+
+	suffix := clie2e.GenerateSuffix()
+	spreadsheetToken := createSpreadsheet(t, parentT, ctx, "lark-cli-e2e-sheets-gridline-"+suffix, "bot")
+
+	infoResult, err := clie2e.RunCmd(ctx, clie2e.Request{
+		Args:      []string{"sheets", "+info", "--spreadsheet-token", spreadsheetToken},
+		DefaultAs: "bot",
+	})
+	require.NoError(t, err)
+	infoResult.AssertExitCode(t, 0)
+	infoResult.AssertStdoutStatus(t, true)
+	sheetID := gjson.Get(infoResult.Stdout, "data.sheets.sheets.0.sheet_id").String()
+	require.NotEmpty(t, sheetID, "sheet_id should not be empty, stdout: %s", infoResult.Stdout)
+
+	for _, shortcut := range []string{"+sheet-hide-gridline", "+sheet-show-gridline"} {
+		t.Run(shortcut+" as bot", func(t *testing.T) {
+			result, err := clie2e.RunCmd(ctx, clie2e.Request{
+				Args: []string{
+					"sheets", shortcut,
+					"--spreadsheet-token", spreadsheetToken,
+					"--sheet-id", sheetID,
+				},
+				DefaultAs: "bot",
+			})
+			require.NoError(t, err)
+			result.AssertExitCode(t, 0)
+			result.AssertStdoutStatus(t, true)
+		})
+	}
+}