fix(grid): replace matches in truncated large values

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

@@ -213,6 +213,24 @@ describe("useDataGridEditor searched replacements", () => {
     expect(mocks.executeBatch).not.toHaveBeenCalled();
   });
 
+  it("stages a resolved large-value replacement while the source row still contains its preview", () => {
+    const editor = createEditor(undefined, true, undefined, undefined, [["prefix hit…"]]);
+    editor.newRows.value = [];
+
+    expect(
+      editor.stageCellReplacements([
+        {
+          rowId: 0,
+          col: 0,
+          sourceValue: "prefix hit…",
+          previousValue: "prefix hit suffix",
+          value: "prefix done suffix",
+        },
+      ]),
+    ).toBe(1);
+    expect(editor.dirtyRows.value.get(0)?.get(0)).toBe("prefix done suffix");
+  });
+
   it("rejects readonly, stale, deleted, non-string and out-of-range targets", () => {
     const editor = createEditor(
       ["first", undefined, "last"],

apps/desktop/src/composables/useDataGridEditor.ts

@@ -1071,12 +1071,12 @@ export function useDataGridEditor(options: UseDataGridEditorOptions) {
     beginBatch();
     try {
       for (const change of changes) {
-        const { rowId, col, previousValue, value } = change;
+        const { rowId, col, previousValue, sourceValue = previousValue, value } = change;
         if (!Number.isInteger(rowId) || rowId < 0 || !Number.isInteger(col) || col < 0 || col >= result.value.columns.length || !canEditColumn(col) || deletedRows.value.has(rowId)) continue;
         const row = result.value.rows[rowId];
         if (!row) continue;
         const data = rowDataWithChanges(row, rowId);
-        if (typeof data[col] !== "string" || data[col] !== previousValue || value === previousValue) continue;
+        if (typeof data[col] !== "string" || data[col] !== sourceValue || value === previousValue) continue;
         const item: RowItem = { id: rowId, sourceIndex: rowId, data, isNew: false, isDeleted: false, isDirtyCol: [], status: "clean" };
         applyCellValueToItem(item, rowId, col, value, { preserveEmptyString: true });
         const currentValue = rowDataWithChanges(row, rowId)[col];