fix(data-grid): preserve scoped context selections

apps/desktop/src/composables/__tests__/useDataGridExport.spec.ts

@@ -66,6 +66,8 @@ function createMongoExportState(options: {
   selectedCellMatrix?: CellSelectionMatrix;
   selectedRowIds?: Set<number>;
   mongoUpdateTarget?: false;
+  contextColumn?: number;
+  syntheticContext?: boolean;
 }) {
   const items = options.items ?? [options.item];
   const selectedRowIds = options.selectedRowIds ?? new Set<number>();
@@ -90,8 +92,8 @@ function createMongoExportState(options: {
     selectedCells: computed(() => options.selectedCellMatrix ?? { columns: [], rows: [] }),
     selectedCellMatrix: computed(() => options.selectedCellMatrix ?? null),
     selectedRange: computed(() => null),
-    contextCell: ref({ rowId: options.item.id, rowIndex: 0, col: -1 }),
-    contextSelectionIsSynthetic: ref(false),
+    contextCell: ref({ rowId: options.item.id, rowIndex: 0, col: options.contextColumn ?? -1 }),
+    contextSelectionIsSynthetic: ref(options.syntheticContext ?? false),
     getRowItem: (rowId) => items.find((item) => item.id === rowId),
     selectedRowIds: ref(selectedRowIds),
     hasRowSelection: computed(() => selectedRowIds.size > 0),
@@ -637,8 +639,8 @@ describe("useDataGridExport prepared row statements", () => {
     );
   });
 
-  it("copies the full row when right-clicking a cell with a synthetic single-cell selection", async () => {
-    vi.mocked(extractDataGridSelection).mockResolvedValue({ text: "x", mimeType: "text/csv", fileExtension: "csv", rowCount: 1, columnCount: 3 });
+  it("copies only the clicked cell as TSV when right-clicking with a synthetic single-cell selection", async () => {
+    vi.mocked(extractDataGridSelection).mockResolvedValue({ text: "x", mimeType: "text/tab-separated-values", fileExtension: "tsv", rowCount: 1, columnCount: 1 });
     // A synthetic 1×1 selection (what right-click creates) — only column 0 of row 0.
     const matrix: CellSelectionMatrix = {
       rowIndexes: [0],
@@ -647,12 +649,14 @@ describe("useDataGridExport prepared row statements", () => {
       rows: [[1]],
     };
     const state = createExportState(editableTable, ["id", "name", "note"], matrix, undefined, undefined, undefined, [], DEFAULT_DATA_GRID_EXTRACTOR_OPTIONS, false, [0, 1, 2], true);
-    await state.copyWithExtractor("csv");
+    await state.copyWithExtractor("tsv");
 
-    // Despite the 1×1 matrix, the context-cell fallback should produce a full-row request (3 columns).
     expect(extractDataGridSelection).toHaveBeenCalledWith(
       expect.objectContaining({
-        columns: [expect.objectContaining({ displayName: "id" }), expect.objectContaining({ displayName: "name" }), expect.objectContaining({ displayName: "note" })],
+        columns: [expect.objectContaining({ displayName: "id" })],
+        selectedColumnIndexes: [0],
+        rows: [[1]],
+        selectionKind: "cells",
       }),
     );
   });
@@ -1329,6 +1333,8 @@ describe("useDataGridExport prepared row statements", () => {
         columns: ["name"],
         rows: [[item.data[1]]],
       },
+      contextColumn: 1,
+      syntheticContext: true,
     });
 
     expect(state.canCopyWithExtractor("sql-updates")).toBe(true);