fix(grid): clicking inside the open cell editor no longer discards the edit

lib/features/workspace/result_grid_view.dart

@@ -1255,6 +1255,17 @@ class _VirtualResultGridState extends material.State<VirtualResultGrid> {
     if (_sortedRows.isEmpty || widget.columns.isEmpty) return;
 
     if (_editingCell != null) {
+      final downCell = _cellAtOffset(
+        localPosition: event.localPosition,
+        rowHeight: rowHeight,
+      );
+      if (downCell == _editingCell) {
+        // The press landed on the cell currently being edited (e.g. to move
+        // the caret or select text inside the open GridCellEditor) — let the
+        // editor's own gesture handling deal with it instead of cancelling
+        // the in-progress edit out from under the user (#1006).
+        return;
+      }
       _cancelEdit();
     }
 

test/features/workspace/result_grid_cell_ux_test.dart

@@ -1,6 +1,8 @@
+import 'package:flutter/gestures.dart' show PointerDeviceKind;
 import 'package:flutter/material.dart' as material;
 import 'package:flutter_test/flutter_test.dart';
 import 'package:querya_desktop/features/workspace/data_grid_staging_buffer.dart';
+import 'package:querya_desktop/features/workspace/grid_cell_editor.dart';
 import 'package:querya_desktop/features/workspace/result_grid_view.dart';
 
 import '../../support/querya_theme_test_shell.dart';
@@ -113,4 +115,105 @@ void main() {
       expect(textCursors, isEmpty);
     });
   });
+
+  group('VirtualResultGrid cell editor', () {
+    testWidgets(
+        'clicking inside the open editor does not discard the in-progress edit (#1006)',
+        (tester) async {
+      final staging = DataGridStagingBuffer(
+        columns: const ['id', 'name'],
+        rows: const [
+          ['1', 'Ada'],
+        ],
+      );
+      addTearDown(staging.dispose);
+
+      await tester.pumpWidget(
+        queryaThemeTestShell(
+          child: material.SizedBox(
+            width: 800,
+            height: 400,
+            child: VirtualResultGrid(
+              columns: const ['id', 'name'],
+              rows: const [
+                ['1', 'Ada'],
+              ],
+              stagingBuffer: staging,
+            ),
+          ),
+        ),
+      );
+      await tester.pumpAndSettle();
+
+      final cellCenter = tester.getCenter(find.text('Ada'));
+      await tester.tapAt(cellCenter, kind: PointerDeviceKind.mouse);
+      await tester.pump(const Duration(milliseconds: 50));
+      await tester.tapAt(cellCenter, kind: PointerDeviceKind.mouse);
+      await tester.pumpAndSettle();
+
+      expect(find.byType(GridCellEditor), findsOneWidget,
+          reason: 'double-click should open the inline editor');
+
+      await tester.enterText(find.byType(material.TextField), 'Alicia');
+      await tester.pump();
+
+      // Click inside the open editor — e.g. to reposition the caret — must
+      // not close it or discard the value typed so far.
+      await tester.tapAt(
+        tester.getCenter(find.byType(GridCellEditor)),
+        kind: PointerDeviceKind.mouse,
+      );
+      await tester.pumpAndSettle();
+
+      expect(find.byType(GridCellEditor), findsOneWidget,
+          reason: 'a click inside the editor must not cancel the edit');
+      expect(find.text('Alicia'), findsOneWidget,
+          reason: 'the typed value must survive a click inside the editor');
+    });
+
+    testWidgets('clicking a different cell while editing cancels the edit',
+        (tester) async {
+      final staging = DataGridStagingBuffer(
+        columns: const ['id', 'name'],
+        rows: const [
+          ['1', 'Ada'],
+          ['2', 'Bob'],
+        ],
+      );
+      addTearDown(staging.dispose);
+
+      await tester.pumpWidget(
+        queryaThemeTestShell(
+          child: material.SizedBox(
+            width: 800,
+            height: 400,
+            child: VirtualResultGrid(
+              columns: const ['id', 'name'],
+              rows: const [
+                ['1', 'Ada'],
+                ['2', 'Bob'],
+              ],
+              stagingBuffer: staging,
+            ),
+          ),
+        ),
+      );
+      await tester.pumpAndSettle();
+
+      final cellCenter = tester.getCenter(find.text('Ada'));
+      await tester.tapAt(cellCenter, kind: PointerDeviceKind.mouse);
+      await tester.pump(const Duration(milliseconds: 50));
+      await tester.tapAt(cellCenter, kind: PointerDeviceKind.mouse);
+      await tester.pumpAndSettle();
+      expect(find.byType(GridCellEditor), findsOneWidget);
+
+      await tester.tapAt(
+        tester.getCenter(find.text('Bob')),
+        kind: PointerDeviceKind.mouse,
+      );
+      await tester.pumpAndSettle();
+
+      expect(find.byType(GridCellEditor), findsNothing);
+    });
+  });
 }